TECHNICAL FIELD
The present disclosure relates to a field of electrical cables. More
specifically, the present disclosure relates to fiber integrated power cable.
BACKGROUND
Power cables are employed for transmission and distribution of electrical
power in rural, suburban and urban areas. These power cables are characterized as
low voltage cables, medium voltage cables and high voltage cables. Some power
cables include optical fibers inside a core. In addition, the optical fiber is a thin fiber
10 of glass or plastic that can carry light from one end to the other. Further, the optical
fiber may be used for applications such as distributed temperature sensing,
communication purposes, and distribution networks. The optical fiber provides
accurate results in distributed temperature sensing. Currently, the optical fiber is
either embedded inside the power cable directly touching core of the power cable or
15 placed outside in vicinity of the power cable. However, the placement of optical fiber
near core of the power cable may damage optical and mechanical properties of the
optical fiber. In addition, the placement of the optical fiber outside the power cable
does not provide accurate temperature sensing results. This is due to the fact that
there are a lot of insulation layers present between the optical fiber and the power
20 cable. Further, the optical and mechanical properties of the optical fiber are damaged
because of high levels of temperature inside the power cable.
 In light of the above stated discussion, there is a constant need to provide a
fiber integrated power cable with an optimized position of the optical fiber.
OBJECT OF THE DISCLOSURE
25  A primary object of the present disclosure is to provide a fiber integrated
power cable.
 Another object of the present disclosure is to provide the fiber integrated
power cable to perform distributed temperature sensing.
3
 Another object of the present disclosure is to provide the fiber integrated
power cable with attained temperature less than a first temperature through the fiber
integrated power cable.
SUMMARY
 In an aspect, the present disclosure provides 5 ovides a power cable. The power cable
includes one or more layers. The one or more layers concentrically surround a core
of the power cable. The core of the power cable includes a plurality of electrical
conductor units positioned inside the core of the power cable. The plurality of
electrical conductor units is lying substantially along a longitudinal axis of the power
10 cable. The core of the power cable includes one or more fillers positioned inside the
core of the power cable. The one or more fillers are lying substantially along the
longitudinal axis of the power cable. The core of the power cable includes at least
one optical fiber unit positioned in at least one interstitial space in at least one region
including at least one of one or more second fillers, at least one of one or more third
15 fillers and a portion of a first layer of the power cable. The one optical fiber unit is
lying substantially along the longitudinal axis of the power cable. Each electrical
conductor unit of the plurality of electrical conductor units is stranded together. The
one or more fillers include a first filler, at least one of the one or more second fillers
and the at least one or more third fillers. The at least one region is defined as a region
20 or space formed between the one or more second fillers, the one or more third fillers
and the portion of the first layer of the power cable in at least one section of the core
of the power cable. The first layer surrounds the core of the power cable. The at
least one optical fiber unit is placed in the at least one interstitial space to enable no
contact with the plurality of electrical conductor units. The at least one optical fiber
25 unit is optimally positioned inside the power cable. The optimal position is defined
to maintain a temperature less than a first temperature. The first temperature is
maximum temperature permissible through the power cable for optimal performance.
4
BRIEF DESCRIPTION OF FIGURES
 FIG. 1A-1G illustrates different cross sectional views of a fiber integrated
power cable, in accordance with various embodiments of the present disclosure.
DETAILED DESCRIPTION
 FIG. 1A-1G illustrates different cross sectional 5 nal views 100 of a fiber
integrated power cable 102, in accordance with various embodiments of the present
disclosure. The different cross sectional views 100 depict the fiber integrated power
cable 102. The fiber integrated power cable 102 includes an optical fiber unit 104
and a plurality of electrical conductor units 106a-c. Further, the fiber integrated
10 power cable 102 includes a first filler 108, one or more second fillers 110 and and
one or more third fillers 112. Furthermore, the fiber integrated power cable 102
includes a first layer 114, an armoring layer 116 and a second layer 118. In addition,
the plurality of electrical conductor units 106a-c include a first electrical conductor
unit 106a, a second electrical conductor unit 106b and a third electrical conductor
15 unit 106c.
 The fiber integrated power cable 102 is an electrical cable or an assembly of
one or more electrical conductors that are usually held together with an overall
sheath. In general, the conductor is an object or type of material that allows flow of
an electrical current in one or more directions. The sheath is a protective covering
20 around the fiber integrated power cable 102. The fiber integrated power cable 102
may be installed as permanent wiring within buildings, buried in ground surface, run
overhead, or exposed. In general, the fiber integrated power cable 102 is employed
for transmission and distribution of electrical power to rural areas, urban areas, suburban
areas and the like. Further, the fiber integrated power cable 102 may be
25 characterized as low voltage power cable, medium voltage power cable and high
voltage power cable. In general, the low voltage power cable refers to cable having
operable voltage in a range of below 600 V. In an example, the low voltage power
cable refers to cable used in wiring and cabling infrastructure within homes that
5
supports various digital technologies. In general, the medium voltage power cable
refers to cable having operable voltage in a range of 1900 V to 33 kV. In general, the
high voltage power cable refers to cable having operable voltage in a range of 66 kV
to 500 kV.
 The fiber integrated power cable 102 includes 5 a core and a sheath. The
sheath surrounds the core. The core includes the optical fiber unit 104, the plurality
of electrical conductor units 106a-c, and the one or more fillers. In an embodiment of
the present disclosure, the plurality of electrical conductor units 106a-c include three
electrical conductor units. However, the plurality of electrical conductor units 106a-c
10 are not limited to number of electrical conductor units as mentioned above. Further,
the optical fiber unit 104 includes an optical fiber, optical fiber cable and the like.
The one or more fillers include the first filler 108, the one or more second fillers 110,
and the one or more third fillers 112. The one or more fillers fill up empty spaces
inside the core of the fiber integrated power cable 102. Also, the one or more fillers
15 maintain circular geometry of the fiber integrated power cable 102. The fiber
integrated power cable 102 is referred to as the fiber integrated power cable due to
presence of the optical fiber unit 104 embedded inside the fiber integrated power
cable 102.
 The plurality of electrical conductor units 106a-c are positioned inside the
20 core of the fiber integrated power cable 102. The plurality of electrical conductor
units 106a-c lie substantially along a longitudinal axis of the fiber integrated power
cable 102. Each electrical conductor unit of the plurality of electrical conductor units
106a-c is stranded together. In an embodiment of the present disclosure, each
electrical conductor unit of the plurality of electrical conductor units 106a-c is similar
25 to each other in structure and dimensions. The plurality of electrical conductor units
106a-c are made up of the conductor. In general, the conductor is used for
transmitting and distributing electrical energy along large distances. In an
embodiment of the present disclosure, the conductor is a stranded conductor which
6
has several wires twisted together. In another embodiment of the present disclosure,
the conductor is a metallic portion made up of a rod type structure. The conductor is
made up of metals such as at least one of aluminum, copper and the like. In an
embodiment of the present disclosure, the conductor may be made up of any other
material 5 terial ideal for efficient power transmission.
 In an embodiment of the present disclosure, the fiber integrated power cable
102 is single core power cable. The single core power cable corresponds to cable
with single electrical conductor unit. In an embodiment of the present disclosure, the
single core power cable may have an 11 kV (E) voltage grade. Here, E corresponds
10 to earthed cable. In another embodiment of the present disclosure, the single core
power cable may have an 11 kV (UE) voltage grade. In yet another embodiment of
the present disclosure, the single core power cable may have a 22 kV (E) voltage
grade. In yet another embodiment of the present disclosure, the single core power
cable may have a 33 kV (E) voltage grade.
15  In another embodiment of the present disclosure, the fiber integrated power
cable 102 is three core power cable. The three core power cable corresponds to cable
with three electrical conductor units. In an embodiment of the present disclosure, the
three core power cable may have an 11 kV (E) voltage grade. In another embodiment
of the present disclosure, the three core power cable may have an 11 kV (UE) voltage
20 grade. In yet another embodiment of the present disclosure, the three core power
cable may have a 22 kV (E) voltage grade. In yet another embodiment of the present
disclosure, the three core power cable may have a 33 kV (E) voltage grade.
 The core of the fiber integrated power cable 102 includes the one or more
fillers. The one or more fillers are positioned inside the core of the fiber integrated
25 power cable 102. The one or more fillers lie substantially along the longitudinal axis
of the fiber integrated power cable 102. The one or more fillers are positioned in
interstices of the core of the fiber integrated power cable 102. The interstices are
formed after positioning the plurality of electrical conductor units 106a-c inside the
7
core of the fiber integrated power cable 102. The one or more fillers maintain the
circular geometry of the fiber integrated power cable 102. In addition, the one or
more fillers restrict movement of the plurality of electrical conductor units 106a-c.
The first filler 108, the one or more second fillers 110 and the one or more third
fillers 112 have a circular cross section. In an embodiment 5 nt of the present disclosure,
the first filler 108 is positioned at the center of the fiber integrated power cable 102.
The first filler 108 is positioned between an interstitial space formed between the
plurality of electrical conductor units 106a-c. The first filler 108 is positioned
substantially along the longitudinal axis of the fiber integrated power cable 102. The
10 first filler 108 is central filler disposed in interstitial area or empty space formed
between the plurality of electrical conductor units 106a-c. The first filler 108 fills up
empty space in between the plurality of electrical conductor units 106a-c.
 The one or more second fillers 110 are positioned inside the core of the fiber
integrated power cable 102. The one or more second fillers 110 are positioned in a
15 space formed between two adjacent electrical conductor units of the plurality of
electrical conductor units 106a-c. The one or more second fillers 110 are positioned
substantially along the longitudinal axis of the fiber integrated power cable 102. The
one or more second fillers 110 are one or more minor type fillers. In an embodiment
of the present disclosure, each of the one or more second fillers 110 are placed along
20 periphery of the core of the fiber integrated power cable 102. Further, the one or
more third fillers 112 are positioned inside the core of the fiber integrated power
cable 102. The one or more third fillers 112 are positioned in a space formed
between two adjacent electrical conductor units of the plurality of electrical
conductor units 106a-c and alongside the one or more second fillers 110. The one or
25 more third fillers 112 are positioned substantially along the longitudinal axis of the
fiber integrated power cable 102. The one or more third fillers 112 are one or more
major type fillers. In an embodiment of the present disclosure, each of the one or
8
more third fillers 112 are placed along periphery of the core of the fiber integrated
power cable 102.
 The core of the fiber integrated power cable 102 includes the optical fiber
unit 104. The optical fiber unit 104 includes the optical fiber or the optical fiber
cable. In layman language, the optical fiber is a thin fiber of glass or 5 plastic that can
carry light from one end to the other. The optical fiber is used as a medium to
transmit light between two ends of the optical fiber. The optical fiber finds wide
usage in fiber-optic communications. In general, the optical fiber permits
transmission over longer distances and at higher bandwidths than electrical cables.
10 Further, the optical fiber cable is a type of cable that includes one or more optical
fibers bundled together. The one or more optical fibers are normally covered in their
individual protective plastic covers. In an embodiment of the present disclosure, the
size of the optical fiber is considered to be in range of 900 micron to 1 mm. In an
embodiment of the present disclosure, the size of the optical fiber cable is considered
15 to be in range of 2 mm to 10 mm. However, the size of the optical fiber and the
optical fiber cable is not limited to above mentioned sizes. In an embodiment of the
present disclosure, standard optical fibers and sensor fibers can be used in the power
cable 102.
 The core of the fiber integrated power cable 102 includes the at least one
20 optical fiber unit 104 positioned in at least one interstitial space in at least one region.
The at least one region includes at least one of the one or more second fillers 110, at
least one of the one or more third fillers 112 and a portion of the first layer 114 of the
fiber integrated power cable 102. The optical fiber unit 104 lies substantially along
the longitudinal axis of the fiber integrated power cable 102. The at least one region
25 is defined as region or space formed between the one or more second fillers 110, the
one or more third fillers 112 and the portion of the first layer 114 of the fiber
integrated power cable 102 in at least one section of the core of the fiber integrated
power cable 102. The at least one section of the fiber integrated power cable 102
9
refers to section formed between the first filler 114, the two electrical conductor units
of the plurality of electrical conductor units 106a-c, and another portion of the first
layer 114 of the fiber integrated power cable 102. The first layer 114 surrounds the
core of the fiber integrated power cable 102. The first layer 114 is an inner jacketing
layer. The at least one optical fiber unit 104 is placed in the 5 e at least one interstitial
space to enable no contact with the plurality of electrical conductor units 106a-c. The
at least one optical fiber unit 104 is optimally positioned inside the fiber integrated
power cable 102. The optimal position is defined to maintain a temperature less than
a first temperature. The first temperature is maximum temperature permissible
10 through the fiber integrated power cable 102 for optimal performance. In an
embodiment of the present disclosure, the first temperature has a value of 90oC. In an
embodiment of the present disclosure, the temperature attained inside the fiber
integrated power cable 102 reaches a value of approximately 88.7oC.
 The optimal position refers to a position to embed the optical fiber unit 104
15 inside the fiber integrated power cable 102 such that temperature attained inside the
fiber integrated power cable 102 is less than the first temperature. The temperature of
the fiber integrated power cable 102 must not exceed the first temperature after
embedding the optical fiber unit 104 inside the fiber integrated power cable 102. The
first temperature is maximum temperature that is permissible to be achieved inside
20 the fiber integrated power cable 102 due to flow of current through the fiber
integrated power cable 102.
 The fiber integrated power cable 102 includes the sheath. The sheath
surrounds and protects the core. The fiber integrated power cable 102 includes the
one or more layers concentrically surrounding the core of the fiber integrated power
25 cable 102. The one or more layers include the first layer 114, the armoring layer 116,
and the second layer 118. The sheath includes the first layer 114. The first layer 114
surrounds the core. The first layer 114 is inner most layer of the fiber integrated
power cable 102. Further, the sheath includes the armoring layer 116. The armoring
10
layer 116 surrounds the first layer 114 of the one or more layers. In an embodiment
of the present disclosure, the armoring layer 116 is made up of galvanized steel wire.
The armoring layer 116 provides mechanical protection to the fiber integrated power
cable 102. In addition, galvanized steel wire is used for protection against rust. In
general, galvanized steel corresponds to coating of zinc over steel. In an embodime5 nt
of the present disclosure, the galvanized steel wire has a circular cross-section. In
addition, the sheath includes the second layer 118. The second layer 118 surrounds
the armoring layer 116 of the fiber integrated power cable 102. The second layer 118
is outer most layer of the sheath for mechanical, electrical, weather and chemical
10 protection of the fiber integrated power cable 102.
 In an embodiment of the present disclosure, the fiber integrated power cable
102 is used to transmit large amount of current. Further, the transmission of larger
amount of current generates large amount of heat in the fiber integrated power cable
102. Furthermore, the total heat dissipation impacts rated core temperature of the
15 fiber integrated power cable 102. Also, the electrical current passing through the
fiber integrated power cable 102 produce a lot of electrical losses. In addition, the
electrical losses are the main reason for dissipation of large amount of heat in the
fiber integrated power cable 102. Further, the dissipation of heat inside the fiber
integrated power cable 102 impact current carrying capacity of the fiber integrated
20 power cable 102. The impact is caused because more amount of heat generated
inside the fiber integrated power cable 102 deteriorates quality of the fiber integrated
power cable 102. Therefore, the temperature attained inside the fiber integrated
power cable 102 must be below the first temperature.
 The optimal position for embedding the optical fiber unit 104 inside the fiber
25 integrated power cable 102 is determined by virtue of experimentation. The purpose
of the experimentation is to determine the optimal position for embedding the optical
fiber unit 104 inside the fiber integrated power cable 102 without compromising
properties of the optical fiber unit 104. In addition, the purpose of the
11
experimentation is to determine the optimal position for embedding the optical fiber
unit 104 inside the fiber integrated power cable 102 such that the temperature attained
in the fiber integrated power cable 102 does not overshoots value of the first
temperature. In an embodiment of the present disclosure, the purpose of the
experimentation 5 ntation is to determine temperature in and around the sheath of the fiber
integrated power cable 102.
 The experimentation is initialized by calculating net current passing through
the fiber integrated power cable 102 using empirical calculations. The net current
passing through the fiber integrated power cable 102 is calculated using equation 1
10 and equation 2. The equation 1 used is I = I1 (D * GR). Here, I refers to the net
current passing through the fiber integrated power cable 102. Further, I1 refers to
rated current and D is derating factor. Furthermore, GR refers to group rating factor.
In addition, the equation 2 used is I2 = Δθ*a. The equation 2 is used to provide
relation between temperature difference, current and heat flow rate at thermal
15 equilibrium. In general, the thermal equilibrium is a state in which two objects
connected by a permeable barrier do not have any heat transfer between them. Here,
Δθ refers to temperature difference between the electrical conductor unit of the
plurality of electrical conductor units 106a-c and corresponding ambient air. Further,
a refers to constant value that is used for heat flow rate including thermal resistivity
20 of the medium. The equation 1 and equation 2 are used to find temperature attained
in and around the second layer 118 of the sheath of the fiber integrated power cable
102 using ICEA standard. The ICEA standard stands for Insulated Cable Engineers
Association. In general, the ICEA (The Insulated Cable Engineers Association) is a
professional organization dedicated to developing cable standards for electric power,
25 control, and telecommunications industries.
 In addition, the experimentation is continued with help of finite element
analysis (hereinafter, FEA) technique or method. The FEA technique is used to
validate results that are obtained using the empirical calculations. The FEA
12
technique is a numerical technique used to find approximate solutions to boundary
value problems for partial differential equations. In addition, the experimentation is
conducted using thermal analysis to determine the optimal position for embedding the
optical fiber unit 104 inside the fiber integrated power cable 102.
 Initially, steady-state behavior of the fiber integrated power cable 102 5 is
calculated. The term steady state refers to a state when temperature distribution and
thermal flow in and around the fiber integrated power cable 102 stabilizes and
remains constant with time. Further, the FEA technique is used to calculate resistive
losses in the fiber integrated power cable 102. Furthermore, the results obtained by
10 using FEA technique are compared with results obtained by using ICEA standard.
Also, the results obtained by using FEA technique are analyzed with results obtained
by using ICEA standard for standard configuration. Further, the analyzed results are
used to determine the optimal position for embedding the optical fiber unit 104 inside
the fiber integrated power cable 102.
15  The FEA technique is used to develop a two-dimensional geometrical model
of the fiber integrated power cable 102. The geometrical model is developed in twodimensional
co-ordinate system to get radial distribution of temperature inside
various parts of the fiber integrated power cable 102. The geometrical model is split
into sufficiently small surfaces. Further, the small surfaces are termed as faces.
20 Furthermore, the corners of each face of the faces are termed as nodes. Also, each
node of the nodes has three degrees of freedom.
 The FEA technique utilizes any simulation software to design geometry of
the fiber integrated power cable 102. In an embodiment of the present disclosure, the
geometry of the fiber integrated power cable 102 is designed in Design Modeller
25 software of Ansys. In another embodiment of the present discloure, the geometry of
the fiber integrated power cable 102 is designed in any other possible simulation
software. In an embodiment of the present disclosure, the outer diameter of the fiber
integrated power cable 102 is considered to be as 74.5 mm. However, the outer
13
diameter of the fiber integrated power cable 102 may have any other value than the
above specified value. In addition, the simulation software includes the properties of
materials used in the fiber integrated power cable 102.
 In an embodiment of the present disclosure, the number of electrical
conductor units in the core of the fiber integrated power cable 102 is three. In 5 an
embodiment of the present disclosure, the number of conductor screening of extruded
semi-conducting layer is three. In an embodiment of the present disclosure, the
number of insulation of the fiber integrated power cable 102 is three. In an
embodiment of the present disclosure, the number of insulation screening of extruded
10 semi-conducting layer is three. In an embodiment of the present disclosure, the
insulation screening followed by plain copper tape is three. In an embodiment of the
present disclosure, the number of the first layer 114 of the fiber integrated power
cable 102 is one. In an embodiment of the present disclosure, the number of the
armoring layer 116 of the fiber integrated power cable 102 is one. In an embodiment
15 of the present disclosure, the number of the second layer 118 of the fiber integrated
power cable 102 is one. In an embodiment of the present disclosure, the number of
the first filler 108 inside the fiber integrated power cable 102 is one. In an
embodiment of the present disclosure, the number of the one or more second fillers
110 inside the fiber integrated power cable 102 are six. In an embodiment of the
20 present disclosure, the number of the one or more third fillers 112 inside the fiber
integrated power cable 102 are three. However, the above stated components of the
fiber integrated power cable 102 are not limited to above mentioned values.
 In an embodiment of the present disclosure, the inner diameter of the
conductor screening of extruded semi-conducting layer of the fiber integrated power
25 cable 102 is considered to be of 20.4 mm. In an embodiment of the present
disclosure, the inner diameter of the insulation of the fiber integrated power cable 102
is considered to be of 21.3 mm. In an embodiment of the present disclosure, the inner
diameter of the insulation screening of extruded semi-conducting layer of the fiber
14
integrated power cable 102 is considered to be of 28.7 mm. In an embodiment of the
present disclosure, the inner diameter of the insulation screening followed by plain
copper tape of the fiber integrated power cable 102 is considered to be of 29.5 mm.
In an embodiment of the present disclosure, the inner diameter of the first layer 114
of the fiber integrated power cable 102 5 is considered to be of 64.25 mm. In an
embodiment of the present disclosure, the inner diameter of the armoring layer 116 is
considered to be of 66.2 mm. In an embodiment of the present disclosure, the inner
diameter of the second layer 118 of the fiber integrated power cable 102 is considered
to be of 68.2 mm. However, the value of the inner diameter of above mentioned
10 components is not limited to above mentioned values.
 In an embodiment of the present disclosure, the outer diameter of each
electrical conductor unit of the plurality of electrical conductor units 106a-c is
considered to be of 20.4 mm. In an embodiment of the present disclosure, the outer
diameter of the conductor screening of extruded semi-conducting layer of the fiber
15 integrated power cable 102 is considered to be of 21.3 mm. In an embodiment of the
present disclosure, the outer diameter of the insulation of the fiber integrated power
cable 102 is considered to be of 28.7 mm. In an embodiment of the present
disclosure, the outer diameter of the insulation screening of extruded semi-conducting
layer is considered to be of 29.5 mm. In an embodiment of the present disclosure, the
20 outer diameter of the insulation screening followed by plain copper tape is considered
to be of 29.7 mm. In an embodiment of the present disclosure, the outer diameter of
the first layer 114 of the fiber integrated power cable 102 is considered to be of 66.2
mm. In an embodiment of the present disclosure, the outer diameter of the armoring
layer 116 of the fiber integrated power cable 102 is considered to be of 68.2 mm. In
25 an embodiment of the present disclosure, the outer diameter of the second layer 118
of the fiber integrated power cable 102 is considered to be of 74.5 mm. In an
embodiment of the present disclosure, the outer diameter of the first filler 108 of the
fiber integrated power cable 102 is considered to be of 4.7 mm. In an embodiment of
15
the present disclosure, the outer diameter of each filler of the one or more second
fillers 110 is considered to be of 7.1 mm. In an embodiment of the present
disclosure, the outer diameter of each filler of the one or more third fillers 112 is
considered to be of 14.2 mm. However, the value of the outer diameter of above
mentioned 5 ntioned components is not limited to above mentioned values.
 In an embodiment of the present disclosure, the thermal resistivity of each
electrical conductor unit of the plurality of electrical conductor units 106a-c is
considered to be as 0.0025 Km/W. In an embodiment of the present disclosure, the
thermal conductivity of each electrical conductor unit of the plurality of electrical
10 conductor units 106a-c is considered to be as 400 W/mk. In an embodiment of the
present disclosure, the thermal capacity of each electrical conductor unit of the
plurality of electrical conductor units 106a-c is considered to be as 385 J/kg.k. In an
embodiment of the present disclosure, the density of each electrical conductor unit of
the plurality of electrical conductor units 106a-c is considered to be as 8890 Kg/m3.
15 In an embodiment of the present disclosure, the coefficient of thermal expansion of
each electrical conductor unit of the plurality of electrical conductor units 106a-c is
considered to be as 0.00393 (at 20 oC)/K. However, the above mentioned different
properties of the component of the fiber integrated power cable 102 mentioned above
are not limited to the above mentioned values.
20  In an embodiment of the present disclosure, the thermal resistivity of the
conductor screening of extruded semi-conducting layer of the fiber integrated power
cable 102 is considered to be as 0.0025 Km/W. In an embodiment of the present
disclosure, the thermal conductivity of the conductor screening of extruded semiconducting
layer of the fiber integrated power cable 102 is considered to be as 400
25 W/mk. In an embodiment of the present disclosure, the thermal capacity of the
conductor screening of extruded semi-conducting layer of the fiber integrated power
cable 102 is considered to be as 385 J/kg.k. In an embodiment of the present
disclosure, the density of the conductor screening of extruded semi-conducting layer
16
of the fiber integrated power cable 102 is considered to be in a range of 1110 - 1130
Kg/m3. In an embodiment of the present disclosure, the coefficient of the thermal
expansion of conductor screening of extruded semi-conducting layer of the fiber
integrated power cable 102 is considered to be as 1.66E-05 (at 20 oC)/K. However,
the above mentioned 5 ntioned different properties of the component of the fiber integrated
power cable 102 mentioned above are not limited to the above mentioned values.
 In an embodiment of the present disclosure, the thermal resistivity of the
insulation of the fiber integrated power cable 102 is considered to be as 3.5 Km/W.
In an embodiment of the present disclosure, the thermal conductivity of the insulation
10 of the fiber integrated power cable 102 is considered to be as 0.286 W/mk. In an
embodiment of the present disclosure, the thermal capacity of the insulation of the
fiber integrated power cable 102 is considered to be as 385 J/kg.k. In an embodiment
of the present disclosure, the density of the insulation of the fiber integrated power
cable 102 is considered to be in a range of 920 - 930 Kg/m3. In an embodiment of
15 the present disclosure, the coefficient of the thermal expansion of the insulation of the
fiber integrated power cable 102 is considered to be as 1.00E-04 (at 20 oC)/K.
However, the above mentioned different properties of the component of the fiber
integrated power cable 102 mentioned above are not limited to the above mentioned
values.
20  In an embodiment of the present disclosure, the thermal resistivity of the
insulation screening of extruded semi-conducting layer of the fiber integrated power
cable 102 is considered to be as 3.5 Km/W. In an embodiment of the present
disclosure, the thermal conductivity of the insulation screening of the extruded semiconducting
layer of the fiber integrated power cable 102 is considered to be as 0.286
25 W/mk. In an embodiment of the present disclosure, the thermal capacity of the
insulation screening of extruded semi-conducting layer of the fiber integrated power
cable 102 is considered to be as 385 J/kg.k. In an embodiment of the present
disclosure, the density of the insulation screening of extruded semi-conducting layer
17
of the fiber integrated power cable 102 is considered to be in a range of 1130-1180
Kg/m3. In an embodiment of the present disclosure, the coefficient of the thermal
expansion of insulation screening of extruded semi-conducting layer of the fiber
integrated power cable 102 is considered to be as 0.00393 (at 20 oC)/K. However, the
above mentioned 5 ntioned different properties of the component of the fiber integrated power
cable 102 mentioned above are not limited to the above mentioned values.
 In an embodiment of the present disclosure, the thermal resistivity of the
insulation screening followed by plain copper tape of the fiber integrated power cable
102 is considered to be as 0.0025 Km/W. In an embodiment of the present
10 disclosure, the thermal conductivity of the insulation screening followed by plain
copper tape of the fiber integrated power cable 102 is considered to be as 400 W/mk.
In an embodiment of the present disclosure, the thermal capacity of the insulation
screening followed by plain copper tape of the fiber integrated power cable 102 is
considered to be as 385 J/kg.k. In an embodiment of the present disclosure, the
15 density of the insulation screening followed by plain copper tape of the fiber
integrated power cable 102 is considered to be as 8890 Kg/m3. In an embodiment of
the present disclosure, the coefficient of the thermal expansion of insulation screening
followed by plain copper tape of the fiber integrated power cable 102 is considered to
be as 0.00393 (at 20 oC)/K. However, the above mentioned different properties of the
20 component of the fiber integrated power cable 102 mentioned above are not limited
to the above mentioned values.
 In an embodiment of the present disclosure, the thermal resistivity of the first
layer 114 of the fiber integrated power cable 102 is considered to be as 6 Km/W. In
an embodiment of the present disclosure, the thermal conductivity of the first layer
25 114 of the fiber integrated power cable 102 is considered to be as 0.167 W/mk. In an
embodiment of the present disclosure, the thermal capacity of the first layer 114 of
the fiber integrated power cable 102 is considered to be as 1000 J/kg.k. In an
embodiment of the present disclosure, the density of the first layer 114 of the fiber
18
integrated power cable 102 is considered to be as 1480-pvc Kg/m3. In an
embodiment of the present disclosure, the coefficient of the thermal expansion of the
first layer 114 of the fiber integrated power cable 102 is considered to be as 0.00007
(at 20 oC)/K. However, the above mentioned different properties of the component of
the fiber integrated power cable 102 mentioned 5 ntioned above are not limited to the above
mentioned values.
 In an embodiment of the present disclosure, the thermal resistivity of the
armoring layer 116 of the fiber integrated power cable 102 is considered to be as
0.033 Km/W. In an embodiment of the present disclosure, the thermal conductivity
10 of the armoring layer 116 of the fiber integrated power cable 102 is considered to be
as 30 W/mk. In an embodiment of the present disclosure, the thermal capacity of the
armoring layer 116 of the fiber integrated power cable 102 is considered to be as 500
J/kg.k. In an embodiment of the present disclosure, the density of the armoring layer
116 of the fiber integrated power cable 102 is considered to be as 7860 Kg/m3. In an
15 embodiment of the present disclosure, the coefficient of the thermal expansion of the
armoring layer 116 of the fiber integrated power cable 102 is considered to be as
9.00E-06 (at 20 oC)/K. However, the above mentioned different properties of the
component of the fiber integrated power cable 102 mentioned above are not limited
to the above mentioned values.
20  In an embodiment of the present disclosure, the thermal resistivity of the
second layer 118 of the fiber integrated power cable 102 is considered to be as 6
Km/W. In an embodiment of the present disclosure, the thermal conductivity of the
second layer 118 of the fiber integrated power cable 102 is considered to be as 0.167
W/mk. In an embodiment of the present disclosure, the thermal capacity of the
25 second layer 118 of the fiber integrated power cable 102 is considered to be as 1000
J/kg.k. In an embodiment of the present disclosure, the density of the second layer
118 of the fiber integrated power cable 102 is considered to be as 1480-pvc Kg/m3.
In an embodiment of the present disclosure, the coefficient of the thermal expansion
19
of the second layer 118 of the fiber integrated power cable 102 is considered to be as
0.00007 (at 20 oC)/K. However, the above mentioned different properties of the
component of the fiber integrated power cable 102 mentioned above are not limited
to the above mentioned values.
 In an embodiment of the present disclosure, the thermal 5 l resistivity of the one
or more fillers of the fiber integrated power cable 102 is considered to be as 6 Km/W.
In an embodiment of the present disclosure, the thermal conductivity of the one or
more fillers of the fiber integrated power cable 102 is considered to be as 0.167
W/mk. In an embodiment of the present disclosure, the thermal capacity of the one
10 or more fillers of the fiber integrated power cable 102 is considered to be as 900
J/kg.k. In an embodiment of the present disclosure, the density of the one or more
fillers of the fiber integrated power cable 102 is considered to be as 1510-PVC
Kg/m3. In an embodiment of the present disclosure, the coefficient of the thermal
expansion of the one or more fillers of the fiber integrated power cable 102 is
15 considered to be as 0.00343 (at 20 oC)/K. However, the above mentioned different
properties of the component of the fiber integrated power cable 102 mentioned above
are not limited to the above mentioned values.
 In an embodiment of the present disclosure, the thermal resistivity of air gap
in the fiber integrated power cable 102 is considered to be as 38.9 Km/W. In an
20 embodiment of the present disclosure, the thermal conductivity of air gap in the fiber
integrated power cable 102 is considered to be as 0.0257 W/mk. In an embodiment
of the present disclosure, the thermal capacity of the air gap in the fiber integrated
power cable 102 is considered to be as 1005 J/kg.k. In an embodiment of the present
disclosure, the density of the air gap in the fiber integrated power cable 102 is
25 considered to be as 1.2 Kg/m3. In an embodiment of the present disclosure, the
coefficient of the thermal expansion of the air gap in the fiber integrated power cable
102 is considered to be as 0.00343 (at 20 oC)/K. However, the above mentioned
20
different properties of the component of the fiber integrated power cable 102
mentioned above are not limited to the above mentioned values.
 Further, the FEA technique uses meshing to divide region covered by the
fiber integrated power cable 102 into finite elements. The meshing is carried out
such that quality of mesh satisfies all quality 5 lity criteria. Furthermore, the convection
coefficient is calculated based on air velocity. In addition, flat strip armor is assumed
to be uniform in thickness and circular in diameter for simulation purpose.
 The geometrical parameters, material properties and physical descriptions
related to the fiber integrated power cable 102 are defined inside the simulation
10 software. The two dimensional thermal analysis simulation for the fiber integrated
power cable 102 is carried out. The FEA technique carries out simulation to obtain
temperature distribution inside the fiber integrated power cable 102 for different
conductor temperatures. In an embodiment of the present disclosure, the temperature
of the second layer 118 is distributed from 75 oC to 67.5 oC. However, value of the
15 temperature of the second layer 118 is not limited to above mentioned values. In
addition, the second layer 118 faces temperature drop because of convection of heat
to air and thermal equilibrium at steady state condition.
 The temperature difference occurs between the plurality of electrical
conductor units 106a-c and other components of the fiber integrated power cable 102
20 because of material of the insulation. The experimentation shows that the minimum
temperature distribution is found out to be situated at exactly opposite side of the first
filler 108. In addition, the value of temperature distributed in the one or more third
fillers 112 is found out to be in a range of 85.4 oC to 73.5 oC. Further, the air
temperature distribution in the interstitial spaces inside the core of the fiber integrated
25 power cable 102 is found out to be within a range of 86.1 oC to 72.8 oC. The results
of the FEA technique proves that the maximum temperature is achieved at the center
of the core of the fiber integrated power cable 102 near the first filler 108. In
addition, the results of the FEA technique shows that the minimum temperature is
21
achieved at outer periphery near the first layer 114 of the fiber integrated power cable
102. The experimentation confirms that the optimal position for embedding the
optical fiber unit 104 inside the fiber integrated power cable 102 turns out to be the
interstitial space or empty area formed between the at least one or more second fillers
110, the at least one or more third fillers 112 and the portion of the first layer 114 5 of
the fiber integrated power cable 102.
 In an embodiment of the present disclosure, the fiber integrated power cable
performs accurate distributed temperature sensing (hereinafter, DTS). In general, the
distributed temperature sensing is a technology that enables continuous, real-time
10 measurements of temperature along the entire length of a fiber optic cable. The
distributed temperature sensing is done by allowing a light pulse to travel through the
fiber optic cable and the scattered light travels back to transmitting end. The change
in temperature is determined by analyzing wavelength of the light pulse as it travels
through the fiber optic cable. The fiber integrated power cable provides a cost15
effective solution to perform DTS applications.
 In an embodiment of the present disclosure, the fiber integrated power cable
is used for distribution and communication purposes. In another embodiment of the
present disclosure, the fiber integrated power cable is used for telecom purposes. In
another embodiment of the present disclosure, the fiber integrated power cable is
20 used for data transfer purposes. In an embodiment of the present disclosure, the fiber
integrated power cable is used for Supervisory Control and Data Applications
(hereinafter, SCADA). In general, SCADA is a control system architecture that uses
computers, networked data communications and graphical user interfaces for highlevel
process supervisory management. In addition, SCADA uses other peripheral
25 devices such as programmable logic controller (PLC) and discrete PID controllers to
interface with process plant or machinery. In another embodiment of the present
disclosure, the fiber integrated power cable is used for transferring voice, data, video
and the like for SCADA purposes.
22
 In an embodiment of the present disclosure, the fiber integrated power cable
saves the optical fiber unit 104 from damage from adverse environmental effects. In
addition, the fiber integrated power cable has better lifetime of the optical fiber unit
104. In an embodiment of the present disclosure, the fiber integrated power cable is
used to establish data connectivity between one or more 5 re substations. In another
embodiment of the present disclosure, the fiber integrated power cable is used to
provide network connectivity to Internet Service Providers and telecom companies
for facilitation of high speed internet. In an example, the fiber integrated power cable
may be used in emergency situations when other communication network fails.
10  In an embodiment of the present disclosure, the at least one optical fiber unit
104 is positioned in the at least one interstitial space. The at least one interstitial
space is present in the at least one region in the at least one section of the core of the
fiber integrated power cable 102. The at least one interstitial space in the at least one
region in the at least one section of the core of the fiber integrated power cable 102 is
15 formed by a filler of the one or more second fillers 110, a filler of the one or more
third fillers 112 and a portion of the first layer 114 of the fiber integrated power cable
102. The at least one optical fiber unit 104 is in direct contact with the filler of the
one or more second fillers 110, the filler of the one or more third fillers 112 and the
portion of the first layer 114. The size of the one or more third fillers 112 are such
20 that the one or more third fillers 112 are in direct contact with two adjacent electrical
conductor units of the plurality of electrical conductor units 106a-c, the one or more
second fillers 110 and the first layer 114 of the fiber integrated power cable 102. (as
shown in FIG. 1A)
 In another embodiment of the present disclosure, the at least one optical fiber
25 unit 104 is positioned in the at least one interstitial space. The at least one interstitial
space is formed in the at least one region in the at least one section of the core of the
fiber integrated power cable 102. The at least one interstitial space in the at least one
region in the at least one section of the core of the fiber integrated power cable 102 is
23
formed by the one or more second fillers 110, the one or more third fillers 112 and a
portion of the first layer 114 of the fiber integrated power cable 102. The at least one
optical fiber unit 104 is in direct contact with the one or more third fillers 112 and the
first layer 114 of the fiber integrated power cable 102. The at least one optical fiber
unit 104 is not in contact with the one or more second fillers 110. 5 . The direct contact
of the at least one optical fiber unit 104 with the one or more third fillers 112 and the
first layer 114 of the fiber integrated power cable 102 is enabled by optimizing size of
the one or more third fillers 112. The size of the one or more third fillers 112 is
optimized such that the one or more third fillers 112 are in direct contact with two
10 adjacent electrical conductor units of the plurality of electrical conductor units 106ac,
the one or more second fillers 110 and the first layer 114 of the fiber integrated
power cable 102. (as shown in FIG. 1B)
 In another embodiment of the present disclosure, the one or more second
fillers 110 completely replace the one or more third fillers 112 in the fiber integrated
15 power cable 102. The at least one optical fiber unit 104 is positioned in the at least
one interstitial space formed in the at least one region in the at least one section of the
core of the fiber integrated power cable 102. The at least one interstitial space is
formed between the one or more second fillers 110 and a portion of the first layer 114
of the fiber integrated power cable 102. The one or more third fillers 112 are
20 replaced to enable the at least one optical fiber unit 104 having a larger diameter to be
positioned inside the core of the fiber integrated power cable 102. The at least one
optical fiber unit 104 is in direct contact with the one or more second fillers 110 and
the first layer 114 of the fiber integrated power cable 102. The at least one interstitial
space is formed by optimizing size of the one or more second fillers 110. (as shown
25 in FIG. 1C)
 In another embodiment of the present disclosure, the at least one optical fiber
unit 104 is positioned in the at least one interstitial space formed in the at least one
region in the at least one section of the core of the fiber integrated power cable 102.
24
The at least one interstitial space in the at least one region in the at least one section
of the core of the fiber integrated power cable 102 is formed by the one or more
second fillers 110 and the one or more third fillers 112 and a portion of the first layer
114 of the fiber integrated power cable 102. The at least one optical fiber unit 104 is
in direct contact with the one or more third fillers 112 and the first layer 5 r 114 of the
fiber integrated power cable 102. The at least one optical fiber unit 104 is not in
contact with the one or more second fillers 110. The direct contact of the at least one
optical fiber unit 104 with the one or more third fillers 112 and the first layer 114 of
the fiber integrated power cable 102 is enabled by optimizing shape of the one or
10 more third fillers 112. The shape of the one or more third fillers 112 is optimized as
C-shaped. The one or more second fillers 110 are in contact with two adjacent
electrical conductor units of the plurality of electrical conductor units 106a-c. (as
shown in FIG. 1D)
 In another embodiment of the present disclosure, the one or more second
15 fillers 110 completely replace the one or more third fillers 112. The at least one
optical fiber unit 104 is positioned in the at least one interstitial space formed in the at
least one region in the at least one section of the core of the fiber integrated power
cable 102. The at least one interstitial space is formed between the one or more
second fillers 110 and a portion of the first layer 114 of the fiber integrated power
20 cable 102. The one or more third fillers 112 are replaced to enable the at least one
optical fiber unit 104 having a larger diameter to be positioned inside the core of the
fiber integrated power cable 102. The one or more second fillers 110 are optimized
as C-shaped. The at least one optical fiber unit 104 is in direct contact with the one
or more second fillers 110 and the first layer 114 of the fiber integrated power cable
25 102. The at least one interstitial space is formed by optimizing size and shape of the
one or more second fillers 110. (as shown in FIG. 1E and FIG. 1F)
 In another embodiment of the present disclosure, the at least one optical fiber
unit 104 is positioned in the at least one interstitial space formed in the at least one
25
region in the at least one section of the core of the fiber integrated power cable 102.
The at least one interstitial space in the at least one region in the at least one section
of the core of the fiber integrated power cable 102 is formed by the one or more
second fillers 110, the one or more third fillers 112 and a portion of the first layer 114
of the fiber integrated power cable 102. The at least one optical fiber unit 104 5 is in
direct contact with the one or more third fillers 112 and the first layer 114 of the fiber
integrated power cable 102. The at least one optical fiber unit 104 is not in contact
with the one or more second fillers 110. The direct contact of the at least one optical
fiber unit 104 with the one or more third fillers 112 and the first layer 114 of the fiber
10 integrated power cable 102 is enabled by optimizing size and shape of the one or
more third fillers 112. The shape of the one or more third fillers 112 are optimized as
C-shaped. The one or more second fillers 110 are in contact with two adjacent
electrical conductor units of the plurality of electrical conductor units 106a-c. (as
shown in FIG. 1G)

Claims
What is claimed is:
1. A fiber integrated power cable (102) comprising:
one or more 5 re layers concentrically surrounding a core of the fiber integrated
power cable (102), the core of the fiber integrated power cable (102) comprising:
a plurality of electrical conductor units (106a-c) positioned inside the core of
the fiber integrated power cable (102) and lying substantially along a longitudinal
axis of the fiber integrated power cable (102), wherein each electrical conductor
10 unit of the plurality of electrical conductor units (106a-c) is stranded together;
one or more fillers positioned inside the core of the fiber integrated power
cable (102) and lying substantially along the longitudinal axis of the fiber integrated
power cable (102), wherein the one or more fillers comprises at least one of a first
filler (108), at least one of one or more second fillers (110) and at least one or more
15 third fillers (112); and
at least one optical fiber unit (104) positioned in at least one interstitial space
in at least one region comprising at least one of the one or more second fillers
(110), at least one of the one or more third fillers (112) and a circumferential
portion of a first layer (114) of the fiber integrated power cable (102) and lying
20 substantially along the longitudinal axis of the fiber integrated power cable (102),
wherein the at least one region is defined as a region or space formed between the
one or more second fillers (110), the one or more third fillers (112) and the portion
of the first layer (114) of the fiber integrated power cable (102) in at least one
section of the core of the fiber integrated power cable (102), wherein the first layer
25 (114) surrounds the core of the fiber integrated power cable (102), wherein the at
least one optical fiber unit (104) is placed in the at least one interstitial space to
enable no contact with the plurality of electrical conductor units (106a-c), wherein
the at least one optical fiber unit (104) is optimally positioned inside the fiber
integrated power cable (102), wherein the optimal position is defined to maintain a
temperature less than a first temperature, wherein the first temperature is maximum
temperature permissible through the fiber integrated power cable (102) for optimal
performance.
2. The fiber integrated power cable (102) as recited 5 in claim 1, wherein the first
filler (108) is positioned at a center of the fiber integrated power cable (102)
between an interstitial space formed between the plurality of electrical conductor
units (106a-c) and positioned substantially along the longitudinal axis of the fiber
integrated power cable (102), wherein the one or more second fillers (110) are
10 positioned substantially along the longitudinal axis of the fiber integrated power
cable (102), wherein each of the one or more second fillers (110) are positioned in a
space formed between two adjacent electrical conductor units of the plurality of
electrical conductor units (106a-c), wherein the one or more third fillers (112) are
positioned substantially along the longitudinal axis of the fiber integrated power
15 cable (102), wherein each of the one or more third fillers (112) are positioned in a
space formed between two adjacent electrical conductor units of the plurality of
electrical conductor units (106a-c) and alongside the one or more second fillers
(110).
3. The fiber integrated power cable (102) as recited in claim 1, wherein the at
20 least one optical fiber unit (104) comprises an optical fiber or an optical fiber cable.
4. The fiber integrated power cable (102) as recited in claim 1, wherein the one
or more layers, further comprising:
the first layer (114) surrounding the core of the fiber integrated power
cable (102);
25 an armoring layer (116), wherein the armoring layer (116) surrounds
the first layer (114) of the one or more layers; and
a second layer (118) surrounding the armoring layer (116) of the fiber
integrated power cable (102).
5. The fiber integrated power cable (102) as recited in claim 1, wherein the at
least one optical fiber unit (104) is positioned in the at least one interstitial space in
the at least one region in the at least one section of the core of the fiber integrated
power cable (102), wherein the at least one interstitial space in the at least one
region in the at least one section of the core of the fiber integrated power 5 wer cable
(102) is formed by a filler of the one or more second fillers (110) and a filler of the
one or more third fillers (112) and a portion of the first layer (114) of the fiber
integrated power cable (102) such that the at least one optical fiber unit (104) is in
direct contact with the filler of the one or more second fillers (110), the filler of the
10 one or more third fillers (112) and the portion of the first layer (114), wherein size
of the one or more third fillers (112) is such that the one or more third fillers (112)
are in direct contact with two adjacent electrical conductor units of the plurality of
electrical conductor units (106a-c), the one or more second fillers (110) and the first
layer (114) of the fiber integrated power cable (102).
6. The fiber integrated power cable (102) as recited in claim 1, wherein the at
least one optical fiber unit (104) is positioned in the at least one interstitial space
formed in the at least one region in the at least one section of the core of the fiber
integrated power cable (102), wherein the at least one interstitial space in the at
least one region in the at least one section of the core of the fiber integrated power
20 cable (102) is formed by the one or more second fillers (110), the one or more third
fillers (112) and a portion of the first layer (114) of the fiber integrated power cable
(102) such that the at least one optical fiber unit (104) is in direct contact with the
one or more third fillers (112) and the first layer (114) of the fiber integrated power
cable (102) and not in contact with the one or more second fillers (110), wherein
25 the direct contact of the at least one optical fiber unit (104) with the one or more
third fillers (112) and the first layer (114) of the fiber integrated power cable (102)
is enabled by optimizing size of the one or more third fillers (112), and wherein the
size of the one or more third fillers (112) is optimized such that the one or more
third fillers (112) are in direct contact with two adjacent electrical conductor units
of the plurality of electrical conductor units (106a-c), the one or more second fillers
(110) and the first layer (114) of the fiber integrated power cable (102).
7. The fiber integrated power cable (102) as recited in claim 1, wherein the one
or more second fillers (110) completely replace 5 ace the one or more third fillers (112),
wherein the at least one optical fiber unit (104) is positioned in the at least one
interstitial space formed in the at least one region in the at least one section of the
core of the fiber integrated power cable (102), wherein the at least one interstitial
space is formed between the one or more second fillers (110) and a portion of the
10 first layer (114) of the fiber integrated power cable (102), wherein the one or more
third fillers (112) are replaced to enable the at least one optical fiber unit (104)
having a larger diameter to be positioned inside the core of the fiber integrated
power cable (102), wherein the at least one optical fiber unit (104) is in direct
contact with the one or more second fillers (110) and the first layer (114) of the
15 fiber integrated power cable (102), wherein the at least one interstitial space is
formed by optimizing size of the one or more second fillers (110).
8. The fiber integrated power cable (102) as recited in claim 1, wherein the at
least one optical fiber unit (104) is positioned in the at least one interstitial space
formed in the at least one region in the at least one section of the core of the fiber
20 integrated power cable (102), wherein the at least one interstitial space in the at
least one region in the at least one section of the core of the fiber integrated power
cable (102) is formed by the one or more second fillers (110) and the one or more
third fillers (112) and a portion of the first layer (114) of the fiber integrated power
cable (102) such that the at least one optical fiber unit (104) is in direct contact with
25 the one or more third fillers (112) and the first layer (114) of the fiber integrated
power cable (102) and not in contact with the one or more second fillers (110),
wherein the direct contact of the at least one optical fiber unit (104) with the one or
more third fillers (112) and the first layer (114) of the fiber integrated power cable
(102) is enabled by optimizing shape of the one or more third fillers (112), and
wherein the shape of the one or more third fillers (112) is optimized as C-shaped,
wherein the one or more second fillers (110) is in contact with two adjacent
electrical conductor units of the plurality of electrical conductor units (106a-c).
9. The 5 fiber integrated power cable (102) as recited in claim 1, wherein the one
or more second fillers (110) completely replace the one or more third fillers (112),
wherein the at least one optical fiber unit (104) is positioned in the at least one
interstitial space formed in the at least one region in the at least one section of the
core of the fiber integrated power cable (102), wherein the at least one interstitial
10 space is formed between the one or more second fillers (110) and a portion of the
first layer (114) of the fiber integrated power cable (102), wherein the one or more
third fillers (112) are replaced to enable the at least one optical fiber unit (104)
having a larger diameter to be positioned inside the core of the fiber integrated
power cable (102), wherein the one or more second fillers (110) are optimized as C15
shaped, wherein the at least one optical fiber unit (104) is in direct contact with the
one or more second fillers (110) and the first layer (114) of the fiber integrated
power cable (102), wherein the at least one interstitial space is formed by
optimizing size and shape of the one or more second fillers (110).
10. The fiber integrated power cable (102) as recited in claim 1, wherein the at
20 least one optical fiber unit (104) is positioned in the at least one interstitial space
formed in the at least one region in the at least one section of the core of the fiber
integrated power cable (102), wherein the at least one interstitial space in the at
least one region in the at least one section of the core of the fiber integrated power
cable (102) is formed by the one or more second fillers (110), the one or more third
25 fillers (112) and a portion of the first layer (114) of the fiber integrated power cable
(102) such that the at least one optical fiber unit (104) is in direct contact with the
one or more third fillers (112) and the first layer (114) of the fiber integrated power
cable (102) and not in contact with the one or more second fillers (110), wherein
the direct contact of the at least one optical fiber unit (104) with the one or more
third fillers (112) and the first layer (114) of the fiber integrated power cable (102)
is enabled by optimizing size and shape of the one or more third fillers (112),
wherein the shape of the one or more third fillers (112) is optimized as C-shaped,
wherein the one or more 5 re second fillers (110) are in contact with two adjacent
electrical conductor units of the plurality of electrical conductor units (106a-c).