Claims:1. A system for supplying power through an energy meter, said system comprising:
a distribution transformer adapted to provide power to the energy meter;
one or more relays provided in the energy meter, said one or more relays adapted to connect a load to the energy meter; and
a controller operatively coupled to the energy meter and configured to:
disconnect the one or more relays from the load on disconnection of power supply from the distribution transformer; and
connect, upon detection of reconnection of power from the distribution transformer, the one or more relays after a corresponding predetermined delay after reconnection of power from the distribution transformer to enable protection of the distribution transformer from inrush current due to instantaneous connection of load.
2. The system as claimed in claim 1, wherein one or more energy meters is connected to the distribution transformer.
3. The system as claimed in claim 2, wherein each of the one or more energy meters is connected to the load through the one or more relays present in each of the one or more energy meters after a corresponding predetermined delay after reconnection of power from the distribution transformer.
4. A method for supplying power through an energy meter, said method comprising the steps of:
disconnecting one or more relays provided in the energy meter from a load, on disconnection of power supply to the energy meter from a distribution transformer; and
connecting, upon detection of reconnection of power from the distribution transformer, the one or more relays after a corresponding predetermined delay after reconnection of power from the distribution transformer to enable protection of the distribution transformer from inrush current due to instantaneous connection of load.
, Description:TECHNICAL FIELD
[0001] The present disclosure relates, in general, to metered power connections from a distribution transformer. In particular, the present disclosure relates to a means to protect a distribution transformer from inrush current on reconnection with one or more metered connections.

BACKGROUND
[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] Generally, energy meters in residential and industrial areas are connected on distribution transformers. So, the consumption of all the energy meters collectively is the load which the distribution transformer has to deliver. This decides the specifications for distribution transformer in a particular area.
[0004] Whenever power resumes, all the energy meters connected on a distribution transformer will get powered ON at the same time and the load used by a consumer will also get connected at the same time. At this condition, there will be a sudden inrush current flowing and this may impact the distribution transformer. Sometimes, because of this inrush current or some fault condition, the consumer appliances may also be adversely impacted.
[0005] There is, therefore, a requirement in the art for a means to control the connection of energy meters on reconnection with a distribution transformer in order to reduce inrush current.
[0006] All publications herein are incorporated by reference to the same extent as if each individual publication or patent application were specifically and individually indicated to be incorporated by reference. Where a definition or use of a term in an incorporated reference is inconsistent or contrary to the definition of that term provided herein, the definition of that term provided herein applies and the definition of that term in the reference does not apply.

OBJECTS OF THE PRESENT DISCLOSURE
[0007] A general object of the present disclosure is to provide a system and method for supplying power from a distribution transformer using an energy meter.
[0008] Another object of the present disclosure is to provide a system for staggered connection of energy meters to a distribution transformer after reconnection of power supply.
[0009] Another object of the present disclosure is to provide a means to protect the transformer from inrush current.

SUMMARY
[0010] The present disclosure relates, in general, to metered power connections from a distribution transformer. In particular, the present disclosure relates to a means to protect a distribution transformer from inrush current on reconnection with one or more metered connections.
[0011] In an aspect, the present disclosure provides a system for supplying power through an energy meter, said system comprising: a distribution transformer adapted to provide power to the energy meter; one or more relays provided in the energy meter, said one or more relays adapted to connect a load to the energy meter; and a controller operatively coupled to the energy meter and configured to: disconnect the one or more relays from the load on disconnection of power supply from the distribution transformer; and connect, upon detection of reconnection of power from the distribution transformer, the one or more relays after a corresponding predetermined delay after reconnection of power from the distribution transformer to enable protection of the distribution transformer from inrush current due to instantaneous connection of load.
[0012] In an embodiment, one or more energy meters is connected to the distribution transformer. In another embodiment, each of the one or more energy meters is connected to the load through the one or more relays present in each of the one or more energy meters after a corresponding predetermined delay after reconnection of power from the distribution transformer.
[0013] In an aspect, the present disclosure provides a method for supplying power through an energy meter, said method comprising the steps of: disconnecting one or more relays provided in the energy meter from a load, on disconnection of power supply to the energy meter from a distribution transformer; and connecting, upon detection of reconnection of power from the distribution transformer, the one or more relays after a corresponding predetermined delay after reconnection of power from the distribution transformer to enable protection of the distribution transformer from inrush current due to instantaneous connection of load.
[0014] Various objects, features, aspects and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

BRIEF DESCRIPTION OF DRAWINGS
[0015] The accompanying drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.
[0016] FIG. 1 illustrates a representation of a number of energy meters of an area connected to a distribution transformer.
[0017] FIG. 2 illustrates an exemplary block diagram of a system for supplying power through an energy meter, in accordance with an embodiment of the present disclosure.
[0018] FIG. 3 illustrates an exemplary flow diagram of a method for supplying power through an energy meter, in accordance with an embodiment of the present disclosure.
[0019] FIG. 4 illustrates an exemplary flow diagram for a method to control delay in connection of power to the energy meters, in accordance with an embodiment of the present disclosure.

DETAILED DESCRIPTION
[0020] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
[0021] If the specification states a component or feature “may”, “can”, “could”, or “might” be included or have a characteristic, that particular component or feature is not required to be included or have the characteristic.
[0022] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[0023] Exemplary embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown. These exemplary embodiments are provided only for illustrative purposes and so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those of ordinary skill in the art. The invention disclosed may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Various modifications will be readily apparent to persons skilled in the art. The general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the invention. Moreover, all statements herein reciting embodiments of the invention, as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. Additionally, it is intended that such equivalents include both currently known equivalents as well as equivalents developed in the future (i.e., any elements developed that perform the same function, regardless of structure). Also, the terminology and phraseology used is for the purpose of describing exemplary embodiments and should not be considered limiting. Thus, the present invention is to be accorded the widest scope encompassing numerous alternatives, modifications and equivalents consistent with the principles and features disclosed. For purpose of clarity, details relating to technical material that is known in the technical fields related to the invention have not been described in detail so as not to unnecessarily obscure the present invention.
[0024] The use of any and all examples, or exemplary language (e.g., “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non – claimed element essential to the practice of the invention.
[0025] The present disclosure relates, in general, to metered power connections from a distribution transformer. In particular, the present disclosure relates to a means to protect a distribution transformer from inrush current on reconnection with one or more metered connections.
[0026] In an aspect, the present disclosure provides a system for supplying power through an energy meter, said system comprising: a distribution transformer adapted to provide power to the energy meter; one or more relays provided in the energy meter, said one or more relays adapted to connect a load to the energy meter; and a controller operatively coupled to the energy meter and configured to: disconnect the one or more relays from the load on disconnection of power supply from the distribution transformer; and connect, upon detection of reconnection of power from the distribution transformer, the one or more relays after a corresponding predetermined delay after reconnection of power from the distribution transformer to enable protection of the distribution transformer from inrush current due to instantaneous connection of load.
[0027] In an embodiment, one or more energy meters is connected to the distribution transformer. In another embodiment, each of the one or more energy meters is connected to the load through the one or more relays present in each of the one or more energy meters after a corresponding predetermined delay after reconnection of power from the distribution transformer.
[0028] In an aspect, the present disclosure provides a method for supplying power through an energy meter, said method comprising the steps of: disconnecting one or more relays provided in the energy meter from a load, on disconnection of power supply to the energy meter from a distribution transformer; and connecting, upon detection of reconnection of power from the distribution transformer, the one or more relays after a corresponding predetermined delay after reconnection of power from the distribution transformer to enable protection of the distribution transformer from inrush current due to instantaneous connection of load.
[0029] FIG. 1 illustrates a representation of a number of energy meters of an area connected to a distribution transformer. The distribution transformer 102 provides power to the energy meters (104-1, 104-2…104-n).
[0030] FIG. 2 illustrates an exemplary block diagram of a system for supplying power through an energy meter, in accordance with an embodiment of the present disclosure. The system 200 can comprise an energy meter 202 connected to the distribution transformer 204 to receive power. The energy meter 202 can be a smart meter that can be adapted for load connection and disconnection using one or more latching relays (206-1, 206-2).
[0031] In another embodiment, when a power fail occurs, the relays (206-1, 206-2) can be disconnected. On resumption of power, the relays (206-1, 206-2) can be reconnected.
[0032] In another embodiment, the connection time of the relays (206-1, 206-2) after the power resumes can be controlled by the energy meter 202, and the connection of load can be delayed by a predetermined duration of time for any one or more meters connected to the distribution transformer 204. Thus, inrush current can be reduced at the distribution transformer by staggering the load connected to the distribution transformer once power resumes.
[0033] FIG. 3 illustrates an exemplary flow diagram of a method for supplying power through an energy meter, in accordance with an embodiment of the present disclosure. The method 300 can include the steps of:
• 302 – disconnecting one or more relays provided in the energy meter from a load, on disconnection of power supply to the energy meter from a distribution transformer; and
• 304 – connecting, upon detection of reconnection of power from the distribution transformer, the one or more relays after a corresponding predetermined delay after reconnection of power from the distribution transformer to enable protection of the distribution transformer from inrush current due to instantaneous connection of load.
[0034] In an exemplary instance, a controller to control delay of ten groups of energy meters in an area is illustrated below. Energy meters can be grouped according to serial numbers or according to any other parameter. In this present instance, the energy meters are grouped as,
Group 1: Meters with serial number ending with 1
Group 2: Meters with serial number ending with 2
Group 3: Meters with serial number ending with 3
Group 4: Meters with serial number ending with 4
Group 5: Meters with serial number ending with 5
Group 6: Meters with serial number ending with 6
Group 7: Meters with serial number ending with 7
Group 8: Meters with serial number ending with 8
Group 9: Meters with serial number ending with 9
Group 10: Meters with serial number ending with 0
[0035] For the above ten groups, a delay is required in the range of 1 – 10 seconds for groups 1 – 10 respectively, after the power is reconnected.
[0036] FIG. 4 illustrates an exemplary flow diagram for a method to control delay in connection of power to the energy meters, in accordance with an embodiment of the present disclosure. The method 400 comprises the steps of:
• 402 – load is connected to the energy meter;
• 404 – based on the energy meter, it is determined what the delay required is;
• 406 – an appropriate delay is provided;
• 408 – the relays are switched ON; and
• 410 – resume normal metering.
[0037] It should be apparent to those skilled in the art that many more modifications besides those already described are possible without departing from the inventive concepts herein. The inventive patent matter, therefore, is not to be restricted except in the spirit of the appended claims. Moreover, in interpreting both the specification and the claims, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms “includes” and “including” should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, or utilized, or combined with other elements, components, or steps that are not expressly referenced. Where the specification claims refer to at least one of something selected from the group consisting of A, B, C ….and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc. The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practised with modification within the spirit and scope of the appended claims.
[0038] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

ADVANTAGES OF THE PRESENT DISCLOSURE
[0039] The present disclosure provides a system and method for supplying power from a distribution transformer using an energy meter.
[0040] The present disclosure provides a system for staggered connection of energy meters to a distribution transformer after reconnection of power supply.
[0041] The present disclosure provides a means to protect the transformer from inrush current.