DESC:Technical Field of the Invention

[0001] The present invention relates to system for smart monitoring and protection of oil immersed three-phase distribution transformers. More particularly, the present invention relates to a method for providing a smart monitoring system, operating and protecting of oil immersed three-phase distribution transformer from fault currents and eliminating mal functions.

Background of the Invention

[0002] Transformers play an important role in power transmission used in various industries such as power grid, industries, commercial and residential buildings etc. The main function of the distribution transformer is it provides final voltage transformation in the electric power distribution system by stepping down the voltage used in the distribution lines to the levels used by the consumer. These transformers comprises of a plurality of low voltage and a high voltage winding turns depending on the capacity of the transformer that are provided with an liquid insulation to reduce the heat generated by the windings. The load on this type is transformer continuously vary.

[0003] Due to usage of huge components of distribution transformers maintenance of these is a crucial part in these days. Circuit breakers are employed along with these transformers to trip the entire circuit in case of any fault in the system to prevent the damage of the transformer. Presently, if a circuit breaker is tripped a person has to operate it manually which involves high risk. Protection and maintenance of the transformer from fault currents generally involve various attributes like load variations, switching surges, internal faults etc. which may arise due to climatic conditions or load fluctuations etc. Manual maintenance to prevent the transformer from load interruptions and overload in are bundled with high risk factors.

[0004] In order to avoid the manual maintenance of these three-phase oil immersed distribution transformers, there is a need to develop an automated system for monitoring, protecting and maintaining the distribution transformers wirelessly from a remote location.

Brief Summary of the Invention

[0005] The present invention recognizes the limitations of the prior art and the need for systems and methods that are able to provide assistance to users in a manner that overcomes these limitations.

[0006] A principal object of the present invention is to provide a system for smart protection of a three-phase distribution transformer from fault currents from a remote location.

[0007] Yet another object of the present invention is to integrate a preprogrammed circuitry with a three-phase oil immersed distribution transformer for remotely operating the system after tripping the circuit breaker through a wireless technology.

[0008] According to a first aspect of the present invention, a system for smart monitoring, operating and protecting of oil immersed three-phase distribution transformer is disclosed. The system comprises of a plurality of indicators for controlling an operation of a circuit breaker switch.

[0009] In accordance with a first aspect of the present invention, further the system comprises a control circuit provided with a plurality of components arranged and programmed for monitoring of the three-phase distribution transformer is disclosed. The control circuit components include a plurality of sensing elements, a protection circuit to initiate the circuit breaker in response to the said sensing elements, a synchronizing circuit for continuously monitoring the system for effective operation of protection circuit. To prevent mal functions or operation during tripping, a breaker circuit for operating with the said synchronizing circuit.

[0010] In accordance with a first aspect of the present invention, further also the system comprises a control circuit includes a timer circuit for eliminating the frequent tripping of the breaker anda means for connecting the said control circuit to the oil immersed three-phase distribution transformer for smart monitoring and operating from fault currents.

[0011] In accordance with a first aspect of the present invention, the system controls the circuit breaker switch through a means electrically or electronically operated, arranged near the distribution transformer to open and close the breaker switch.

[0012] In accordance with a first aspect of the present invention, the system operates the circuit breaker according to the response from the sensing elements. Where, the sensing elements are a plurality of relays coordinated by means of the synchronizing circuit to protect from fault currents.

[0013] In accordance with a first aspect of the present invention, the system comprises of setting a delay time to the timer circuit in order to eliminate the frequent tripping of the breaker.

[0014] In accordance with a first aspect of the present invention, the setting of delay of the system is according to tripping specifications of the breaker until a load on the distribution transformer is not constant all the time.

[0015] In accordance with a first aspect of the present invention, the indicators of the system is comprises an oil level indicator and oil temperature indicator connected to the control circuit.

[0016] In accordance with a first aspect of the present invention, further the system comprises a synchronizing circuit to create a sequence mode of operations for monitoring, controlling and protecting entire control circuit.

[0017] In accordance with a first aspect of the present invention, wherein the system is completely encapsulates or dedicate a computer system incorporated with embedded systems.

[0018] In accordance with a first aspect of the present invention, the distribution transformer of the system provides a plurality of connecting terminals.

[0019] According to a second aspect of the present invention, a method for providing a smart monitoring system, operating and protecting of oil immersed three-phase distribution transformer from fault currents and eliminating mal functions is disclosed. The method comprises steps of operating and/or closing of a circuit breaker switch through a control device and initiating the breaker in response to a plurality of sensing elements provided with a protection circuit.

[0020] In accordance with a second aspect of the present invention, further the method comprises step of coordinating of sensing elements with the circuit breaker through a synchronizing circuit to protect distribution transformer and a continuous monitoring system of the protection circuit for effective operation.

[0021] In accordance with a second aspect of the present invention, further step of the method is setting the delay time to a timer circuit according to the tripping specifications of the breaker to avoid frequent tripping and creating a sequence mode of operation for monitoring, controlling and protecting the oil immersed three-phase distribution transformer.

[0022] In accordance with a second aspect of the present invention, wherein the method of mounting the control circuit in near proximity with the transformer core coil assembly.

[0023] In accordance with a secondary aspect of the present invention, wherein the method connects the control device to the circuit breaker for effective operation and tripping of the breaker.

Brief Description of the Drawings

[0024] Other objects and advantages of the present invention will become apparent to those skilled in the art upon reading the following detailed description of the preferred embodiments, in conjunction with the accompanying drawings, wherein like reference numerals have been used to designate like elements, and wherein

[0025] FIG. 1 illustrates a block diagram depicting the internal layout of control device connection along with the three-phase distribution transformer according to the present invention.

[0026] FIG. 2 illustrates a block diagram depicting the connection of control circuit with the three-phase distribution transformer according to the present invention.

Detailed Description of the Invention

[0027] The present invention is directed towards a system and a method for smart monitoring and protection of a three-phase oil immersed distribution transformer for controlling, monitoring and protecting using a wireless technology. Referring to the drawings, wherein like reference numerals designate identical or corresponding systems, preferred embodiments of the present invention are described.

[0028] The use of “including”, “comprising” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. The terms “a” and “an” herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item. Further, the use of terms “first”, “second”, and “third”, and the like, herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

[0029] In accordance with an exemplary embodiment of the present invention, a system for smart monitoring, operating and protecting of oil immersed three-phase distribution transformer is disclosed. The system comprises of a plurality of indicators, for controlling an operation of a circuit breaker switch.

[0030] In accordance with an exemplary embodiment of the present invention, further the system comprises a control circuit provided with a plurality of components arranged and programmed for monitoring of the three-phase distribution transformer is disclosed. The control circuit components include a plurality of sensing elements, a protection circuit to initiate the circuit breaker in response to the said sensing elements, a synchronizing circuit for continuously monitoring the system for effective operation of protection circuit. To prevent mal functions or operation during tripping, a breaker circuit for operating with the said synchronizing circuit.

[0031] In accordance with an exemplary embodiment of the present invention, further also the system comprises a control circuit includes a timer circuit for eliminating the frequent tripping of the breaker and a means for connecting the said control circuit to the oil immersed three-phase distribution transformer for smart monitoring and operating from fault currents.

[0032] In accordance with an exemplary embodiment of the present invention, the system controls the circuit breaker switch through a means electrically or electronically operated, arranged near the distribution transformer to open and close the breaker switch.

[0033] In accordance with an exemplary embodiment of the present invention, wherein the system operate the circuit breaker according to the response from the sensing elements. Where, the sensing elements are a plurality of relays coordinated by means of the synchronizing circuit to protect from fault currents.

[0034] In accordance with an exemplary embodiment of the present invention, the system comprises of setting a delay time to the timer circuit in order to eliminate the frequent tripping of the breaker.

[0035] In accordance with an exemplary embodiment of the present invention, the setting of delay of the system is according to tripping specifications of the breaker until a load on the distribution transformer is not constant all the time.

[0036] In accordance with an exemplary embodiment of the present invention, the indicators of the system is comprises an oil level indicator and oil temperature indicator connected to the control circuit.

[0037] In accordance with an exemplary embodiment of the present invention, further the system comprises a synchronizing circuit to create a sequence mode of operations for monitoring, controlling and protecting entire control circuit.

[0038] In accordance with an exemplary embodiment of the present invention, wherein the system is completely encapsulates or dedicate a computer system incorporated with embedded systems.

[0039] In accordance with an exemplary embodiment of the present invention, the distribution transformer of the system provides a plurality of connecting terminals.

[0040] In accordance with an exemplary embodiment of the present invention, a method for providing smart monitoring system, operating and protecting of oil immersed three-phase distribution transformer from fault currents and eliminating mal functions is disclosed. The method comprises steps of operating and/or closing of a circuit breaker switch through a control device and initiating the breaker in response to a plurality of sensing elements provided with a protection circuit.

[0041] In accordance with an exemplary embodiment of the present invention, further the method comprises step of coordinating of sensing elements with the circuit breaker through a synchronizing circuit to protect distribution transformer and a continuous monitoring system of the protection circuit for effective operation.

[0042] In accordance with an exemplary embodiment of the present invention, further step of the method is setting the delay time to a timer circuit according to the tripping specifications of the breaker to avoid frequent tripping and creating a sequence mode of operation for monitoring, controlling and protecting the oil immersed three-phase distribution transformer.

[0043] In accordance with an exemplary embodiment of the present invention, wherein the method of mounting the control circuit in near proximity with the transformer core coil assembly.

[0044] In accordance with an exemplary embodiment of the present invention, wherein the method connects the control device to the circuit breaker for effective operation and tripping of the breaker.

[0045] The present invention, in accordance with one or more various embodiments, is described in detail with reference to the following figures. The drawings are provided for purposes of illustration only and merely depict typical or example embodiments of the invention. These drawings are provided to facilitate the reader's understanding of the invention and shall not be considered limiting of the breadth, scope, or applicability of the invention.

[0046] FIG. 1illustrates a block diagram 100 depicting the internal layout of the control device according to the present invention. A distribution transformer comprises of a core coil assembly 116immersed in oil for reducing the heat of the core and coil generated during its operation. A high voltage terminal side 102 and low voltage terminal side 104works as a primary winding and a secondary winding respectively for stepping down and distributing the voltage levels according to the requirements of a consumer load. A circuit breaker switch 108 attached to the transformer trips the transformer when there are load fluctuations or any mal functions.

[0047] A controldevice106 is arranged to control the operation of the circuit breaker switch108 in the proximity of the core coil assembly 116 of the distribution transformer to open and close the breaker switch 108 based on the signal received. The control circuit 110connected to the circuit breaker comprises of a plurality of components which atomize the breaker in response to sensing elements arranged and operated accordingly, where the sensing elements include plurality of relays. The control circuit 110also monitors the oil level and temperature of the oil in the oil tank of the distribution transformer and indicators are provided for continuous monitoring of the oil level indicator 112 and oil temperature indicator 114.

[0048] FIG.2 illustrates the block diagram 200depicting the connection of control circuit with the three-phase distribution transformer according to the present invention. The control circuit 202 comprises of a protection circuit 204, a control circuit for breaker 206, a timer circuit 208 and a synchronizing circuit 210.The protection circuit 204 comprises a relays which are coordinated by synchronizing circuit 210 such that the distribution transformer 212 is protected from the fault currents. These relays are effective in protection from severe damage to the coils by arranging a continuous monitoring for effective operation of the protection circuit 204.

[0049] The control circuit for breaker 206is operated automatically with the synchronizing circuit 210 to prevent the mal functions of the circuit breaker 108 during tripping and vice versa.The load on the distribution transformer 212 is not constant all the time such that a timer circuit 208 is arranged to eliminate the mal functions. The timer circuit 208 sets the delay timings according to the tripping specifications of circuit breaker 108 in order to eliminate the voltage regulations or load fluctuations on the distribution transformer 212.

[0050] The synchronizing circuit 210automatically operates the controlling circuit 202 for monitoring, controlling and protecting. It coordinates the relays to protect the distribution transformer 212 from high currents and continuous monitoring of the system for effective operation. The synchronizing circuit 210 creates a sequence mode of operations which the system needs to be performed such that the control circuit 202 does not lag in functioning it is set for.

[0051] The system according to the present invention as described with the above illustrations, are arranged and programmed with a coding language such as embedded ‘C’ with the background of embedded systems in which the computer is completely encapsulated by or dedicated to the system it is controlling. The system performs a few pre-defined tasks with specific requirements by optimizing and reducing the size and cost of the product.

[0052] While the embodiments of the present invention have been described above, it should be understood that they have been presented by way of example only, and not of limitation. Likewise, the diagrams depict an example architectural or other configuration for the invention, which is done to aid in understanding the features and functionality that can be included in the invention. The invention is not restricted to the illustrated example architectures or configurations, but the desired features can be implemented using a variety of alternative architectures and configurations.

[0053] Although the invention is described above in terms of exemplary embodiments and implementations, it should be understood that the features, aspects and functionality described in one or more of the individual embodiments are not limited in their applicability to the particular embodiment with which they are described, but instead can be applied, alone or in various combinations, to one or more of the other embodiments of the invention, whether or not such embodiments are described and whether or not such features are presented as being a part of a described embodiment. Thus, the scope of the present invention should not be limited by any of the above-described exemplary embodiments.
,CLAIMS:Claims
I/We claim

1. A system for smart monitoring, operating and protecting of oil immersed three-phase distribution transformer, wherein the system comprises of:
a plurality of indicators;
a means for controlling an operation of a circuit breaker switch;
a control circuit provided with a plurality of components arranged and programmed for monitoring of the three-phase distribution transformer, wherein the components include:
a plurality of sensing elements;
a protection circuit to initiate the circuit breaker in response to the said sensing elements;
a synchronizing circuit;
a means for continuously monitoring the system for effective operation of protection circuit;
a breaker circuit for operating with the said synchronizing circuit to prevent mal functioning or operation during tripping;
a timer circuit for eliminating the frequent tripping of the breaker; and
a means for connecting the said control circuit to the oil immersed three-phase distribution transformer for smart monitoring and operating from fault currents.

2. The system according to claim 1, characterized to control the circuit breaker switch through a device arranged near the distribution transformer to open and close the breaker switch.

3. The system according to claim 1, characterized to operate the circuit breaker according to a response from the sensing elements.

4. The sensing elements according to claim 1, characterized to be a plurality of relays coordinated by means of the synchronizing circuit to protect from fault currents.

5. The system according to claim 1, characterized for setting a delay time to the timer circuit in order to eliminate the frequent tripping of the breaker.

6. The setting of delay according to the claim 5, characterized according to a tripping specification of the breaker until a load on the distribution transformer is not constant all the time.

7. The indicators according to claim 1, characterized to be an oil level indicator and oil temperature indicator connected to the control circuit.

8. The system according to claim 1, characterized to comprise a synchronizing circuit creating a sequence mode of operations for monitoring, controlling and protecting entire control circuit.

9. The system according to claim 1, characterized to completely encapsulate or dedicate a computer system incorporated with embedded systems.

10. The distribution transformer according to claim 1, characterized to provide a plurality of connecting terminals at both of the low voltage and high voltage terminals.

11. A method for providing a smart monitoring system, operating and protecting of oil immersed three-phase distribution transformer from fault currents and eliminating mal functions, wherein the method comprises steps of:
opening and/or closing of a circuit breaker switch through a control device;
initiating the breaker in response to a plurality of sensing elements provided with a protection circuit;
coordinating of sensing elements with the circuit breaker through a synchronizing circuit to protect distribution transformer;
continuous monitoring of the protection circuit for effective operation;
setting a delay time to a timer circuit according to the tripping specifications of the breaker to avoid frequent tripping; and
creating a sequence mode of operations for monitoring, controlling and protecting the oil immersed three-phase distribution transformer.

12. The method according to claim 9, wherein mounts the control circuit in near proximity with the transformer core coil assembly.

13. The method according to claim 9, wherein connects the control device to the circuit breaker for effective operation and tripping of the breaker.