Method, memory media and apparatus for detection of grid disconnect
Abstract
A phase shift procedure for detecting a disconnect of a power grid from a feeder that is connected to a load and a distributed generator. The phase shift procedure compares a current phase shift of the output voltage of the distributed generator with a predetermined threshold and if greater, a command is issued for a disconnect of the distributed generator from the feeder. To extend the range of detection, the phase shift procedure is used when a power mismatch between the distributed generator and the load exceeds a threshold and either or both of an under/over frequency procedure and an under/over voltage procedure is used when any power mismatch does not exceed the threshold.
- Inventors:
-
- Clifton Park, NY
- Troy, NY
- Issue Date:
- Research Org.:
- GE Global Research, Niskayuna, New York (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 984516
- Patent Number(s):
- 7427815
- Application Number:
- 10/713,310
- Assignee:
- General Electric Company (Niskayuna, NY)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
H - ELECTRICITY H02 - GENERATION H02J - CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER
- DOE Contract Number:
- AND-1-30605-01
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2003 Nov 14
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 24 POWER TRANSMISSION AND DISTRIBUTION
Citation Formats
Ye, Zhihong, and Du, Pengwei. Method, memory media and apparatus for detection of grid disconnect. United States: N. p., 2008.
Web.
Ye, Zhihong, & Du, Pengwei. Method, memory media and apparatus for detection of grid disconnect. United States.
Ye, Zhihong, and Du, Pengwei. Tue .
"Method, memory media and apparatus for detection of grid disconnect". United States. https://www.osti.gov/servlets/purl/984516.
@article{osti_984516,
title = {Method, memory media and apparatus for detection of grid disconnect},
author = {Ye, Zhihong and Du, Pengwei},
abstractNote = {A phase shift procedure for detecting a disconnect of a power grid from a feeder that is connected to a load and a distributed generator. The phase shift procedure compares a current phase shift of the output voltage of the distributed generator with a predetermined threshold and if greater, a command is issued for a disconnect of the distributed generator from the feeder. To extend the range of detection, the phase shift procedure is used when a power mismatch between the distributed generator and the load exceeds a threshold and either or both of an under/over frequency procedure and an under/over voltage procedure is used when any power mismatch does not exceed the threshold.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {9}
}
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