Utility meter arc detection system

Patent metadata

Field	Value
Publication number	US-8947246-B2
Application number	US-201113227199-A
Country	US
Kind code	B2
Filing date	Sep 7, 2011
Priority date	Sep 7, 2011
Publication date	Feb 3, 2015
Grant date	Feb 3, 2015

Abstract

Systems for detecting arcing faults inside a utility meter are disclosed. In one embodiment, an arc detection system for a utility meter is disclosed including: a photoreceptor sensor configured for placement within a utility meter housing; and a computing device communicatively connected to the photoreceptor sensor, the computing device adapted to monitor arcing events within the utility meter housing by performing actions comprising: obtaining illumination data about an area within the utility meter housing from the photoreceptor sensor; and analyzing the illumination data to determine whether an arcing event has occurred within the utility meter.

First claim

What is claimed is:

1. An arc detection system for a utility meter, the arc detection system comprising:
a first photoreceptor sensor configured for placement within a utility meter housing;
a computing device communicatively connected to the photoreceptor sensor, the computing device adapted to monitor arcing events within the utility meter housing by performing actions comprising:
obtaining illumination data about an area within the utility meter housing from the photoreceptor sensor; and
analyzing the illumination data to determine whether an arcing event has occurred within the utility meter; and

a second photoreceptor sensor connected to the computing device,
the computing device analyzing illumination data from both the first photoreceptor sensor and the second photoreceptor sensor to determine whether an arcing event has occurred within the utility meter, wherein the second photoreceptor sensor is configured to obtain illumination data external to the utility meter housing.

2. The arc detection system of claim 1 , wherein the computing device is a metering circuit.

3. The arc detection system of claim 1 , the computing device further configured to provide an arc alert indicator for communication to at least one of a utility service provider or a user, the arc alert indicator indicating the arcing event has occurred.

4. The arc detection system of claim 1 , the computing device further configured to disable service at the utility meter in response to the arcing event.

5. The arc detection system of claim 1 , wherein the analyzing includes detecting the presence of variances in light conditions in the area.

6. The arc detection system of claim 1 , wherein the analyzing of the illumination data further includes:
comparing light intensity values from the obtained illumination data with a set of predetermined light intensity values for the utility meter housing; and
comparing a frequency of detected light variances from the obtained illumination data with a set of predetermined frequencies for light variances within the utility meter housing.

7. A program product stored on a non-transitory computer readable medium, which when executed by at least one computing device communicatively connected to a utility meter, performs the following:
obtain illumination data from both a first photoreceptor sensor and a second photoreceptor sensor connected to a utility meter housing,
wherein the illumination data from the second photoreceptor sensor includes illumination data obtained external to the utility meter housing;
analyze the illumination data from both the first photoreceptor sensor and the second photoreceptor sensor to determine whether an arcing event has occurred within the utility meter; and
provide an arc alert indicator for communication to at least one of a utility service provider or a user, the arc alert indicator indicating whether an arc event has occurred.

8. The program product of claim 7 , wherein the computing device is a metering circuit.

9. The program product of claim 7 , wherein the providing of the arc alert indicator further includes: disabling service at the utility meter.

10. The program product of claim 7 , wherein the analyzing includes detecting the presence of variances in light conditions in an area within the utility meter housing.

11. The program product of claim 7 , wherein the analyzing of the illumination data further includes:
comparing light intensity values from the obtained illumination data with a set of predetermined light intensity values for the utility meter housing; and
comparing a frequency of detected light variances from the obtained illumination data with a set of predetermined frequencies for light variances within the utility meter housing.

12. An electronic utility meter, comprising:
a meter base;
a set of terminal blades connected to the meter base for complementing a utility meter socket;
a first photoreceptor sensor connected to the meter base for detecting variances in illumination between the set of terminal blades and the utility meter socket;
a computing device connected to the photoreceptor sensor, the computing device adapted to obtain illumination data from the photoreceptor sensor and analyze the illumination data to determine whether an arcing event has occurred within the utility meter; and
a second photoreceptor sensor connected to the computing device,
the computing device analyzing illumination data from both the first photoreceptor sensor and the second photoreceptor sensor to determine whether an arcing event has occurred within the utility meter, wherein the second photoreceptor sensor is configured to obtain illumination data external to the utility meter housing.

13. The electronic utility meter of claim 12 , wherein the computing device includes a metering circuit.

14. The electronic utility meter of claim 13 , further comprising a switch operatively coupled to the metering circuit for switching the metering circuit between different states.

15. The electronic utility meter of claim 14 , wherein the computing device is configured to change a state of the switch in response to the illumination data indicating an arcing event.

16. The electronic utility meter of claim 12 , further comprising a user interface connected to the meter base.

Assignees

• Aiken Brian Matthew
• Gen Electric

Inventors

• Aiken Brian Matthew

Classifications

• H02H1/0023 Primary

  sensing non electrical parameters, e.g. by optical, pneumatic, thermal or sonic sensors · CPC title

• G01R31/1218

  using optical methods; using charged particle, e.g. electron, beams or X-rays · CPC title