# US 2013/0158734 A1 · Apparatus And Method To Protect Distribution Networks Against Overcurrents Caused By Faults In Residential Circuits

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- Number: US 2013/0158734 A1
- Document ID: US20130158734A1
- Status: Published application
- Kind: A1
- Application number: 13/328,742
- Filed: 2011-12-16
- Published: 2013-06-20
- Earliest claimed: 2011-12-16
- Assignees: General Electric Company
- Inventors: Hyoung Jhang
- Web page: https://patentgrep.com/patent/US20130158734A1

## CPC

- G01D 1/18: with arrangements for signalling that a predetermined value of an unspecified parameter has been exceeded (G01D1/14 takes precedence)
- H02J 3/17: Demand-responsive operation of AC power transmission or distribution networks
- G01D 2204/22: Arrangements for detecting or reporting faults, outages or leaks
- H02J 2105/51: {according to a condition being electrical}
- Y02B 70/3225: Demand response systems, e.g. load shedding, peak shaving
- Y04S 20/222: Demand response systems, e.g. load shedding, peak shaving
- Y04S 20/30: Smart metering, e.g. specially adapted for remote reading
- G01D: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y04S: SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS

## Abstract

Disclosed herein are methods, apparatuses, and systems for protection of distribution networks against overcurrents caused by faults in residential circuits. In an embodiment, a smart meter monitors a circuit for a particular condition and may adjust the power to a circuit when the condition is detected. In an embodiment, when an overcurrent condition is detected in a residential circuit, the residential circuit may be disconnected by a smart meter from a distribution network before it is seen by a recloser and therefore may isolate an outage to a single home.

## Claims

### Claim 1

A method comprising:
receiving a power attribute from a circuit to a building;
comparing a baseline condition to the monitored power attribute;
detecting that the baseline condition is met; and
adjusting power to the circuit entering into the building, based on the met baseline condition.

### Claim 2 (depends on 1)

The method of claim 1, the building includes a residence.

### Claim 3 (depends on 1)

The method of claim 1, the power attribute comprising at least one of a current, an active power, a reactive power, a voltage, a phase, or a frequency.

### Claim 4 (depends on 1)

The method of claim 1, the adjustment of power to the circuit of the building comprising shutting off power to the circuit.

### Claim 5 (depends on 1)

The method of claim 1, the baseline condition is based on at least one of a load signature or pattern, usage pattern, timing, threshold, or rate of change of the power attribute.

### Claim 6 (depends on 1)

The method of claim 1, the baseline condition is dynamically changed based on analysis of the monitored power attribute over a time period.

### Claim 7 (depends on 1)

The method of claim 1, wherein the baseline condition is reported to a recloser from a smart meter.

### Claim 8

A smart meter configured to:
receive a power attribute from a circuit to a building;
compare a baseline condition to the monitored power attribute;
detect that the baseline condition is met; and
adjust power to the circuit entering into the building, based on the met baseline condition.

### Claim 9 (depends on 8)

The smart meter of claim 8, the building includes a residence.

### Claim 10 (depends on 8)

The smart meter of claim 8, the power attribute comprises at least one of a current, an active power, a reactive power, a voltage, a phase, or a frequency.

### Claim 11 (depends on 8)

The smart meter of claim 8, the adjustment of power to the circuit of the building comprising shutting off power to the circuit of the building.

### Claim 12 (depends on 8)

The smart meter of claim 8, the adjustment of power to the circuit of the building comprising adjusting power to a device in the building.

### Claim 13 (depends on 8)

The smart meter of claim 8, the baseline condition is dynamically changed based on analysis of the monitored power attribute over a time period.

### Claim 14

A system comprising:
a smart meter configured to:
receive a power attribute from a circuit to a building;
compare a baseline condition to the monitored power attribute;
detect that the baseline condition is met; and
adjust power to the circuit entering into the building, based on the met baseline condition; and
a server configured to receive data from the smart meter.

### Claim 15 (depends on 14)

The system of claim 14, the baseline condition is dynamically changed based on analysis of the monitored power attribute over a time period.

### Claim 16 (depends on 14)

The system of claim 14, wherein the server is configured to:
analyze power attribute data from a region; and
transmit an updated baseline condition to the smart meter based on the analyzed power attribute data from the region.

### Claim 17 (depends on 14)

The system of claim 14, the power attribute comprising at least one of a current, an active power, a reactive power, a voltage, a phase, or a frequency.

### Claim 18 (depends on 14)

The system of claim 14, the baseline condition based on at least one of a load signature or pattern, usage pattern, timing, threshold, or rate of change of the power attribute.

### Claim 19 (depends on 14)

The system of claim 14, further comprising a recloser configured to communicate with the smart meter.

### Claim 20 (depends on 14)

The system of claim 14, the adjustment of power to the circuit of the building comprising adjusting power to a device in the building.
