Real-time power system oscillation detection using modal analysis
First Claim
1. A power system oscillation detection device for use in an electric power system, said electric power system including a plurality of intelligent electronic devices (IEDs) in communication with the power system, each IED sampling at least one signal from the power system, said power system oscillation detection device comprising:
- a real-time modal analysis module for calculating modes of at least one of the signals, each mode including mode information;
a real-time mode identification module for determining, from the mode information, whether there is an undesirable oscillation in the electric power system; and
,a run-time system configured to allow a user to program logic using outputs of the real-time modal analysis module and the real-time mode identification module.
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Accused Products
Abstract
A power system oscillation detection device is provided for use in an electric power system. A plurality of sample signals are acquired from the electrical power system via a plurality of intelligent electronic devices (IEDs) in communication with the power system. The power system oscillation detection device includes a real-time modal analysis module, a real-time mode identification module, and real-time decision and control logic. The real-time modal analysis module calculates modes of at least one of the signals, each mode including mode information. The real-time mode identification module together with the real-time decision and control logic determines, from the mode information, whether there is an undesirable oscillation in the electric power system and activates a remedial action.
44 Citations
36 Claims
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1. A power system oscillation detection device for use in an electric power system, said electric power system including a plurality of intelligent electronic devices (IEDs) in communication with the power system, each IED sampling at least one signal from the power system, said power system oscillation detection device comprising:
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a real-time modal analysis module for calculating modes of at least one of the signals, each mode including mode information; a real-time mode identification module for determining, from the mode information, whether there is an undesirable oscillation in the electric power system; and
,a run-time system configured to allow a user to program logic using outputs of the real-time modal analysis module and the real-time mode identification module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for detecting oscillation in an electric power system using samples from a plurality of signals from a plurality of intelligent electronic devices (IEDs) in communication with the power system, the method including the steps of:
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acquiring the time stamped samples of a power system signal from one of the IEDs; calculating mode information from the time stamped samples; identifying a mode; programming logic using calculated mode information and identified mode, and detecting power system oscillation using the identified mode. - View Dependent Claims (18, 19, 20, 21)
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22. A system for power system oscillation detection using modal analysis, comprising:
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a plurality of intelligent electronic devices (IEDs) connected to the electric power system and adapted to sample a signal from the electric power system and communicate the samples; and a local IED adapted to receive the samples, including; a real-time modal analysis module for calculating mode information from at the signal; a real-time mode identification module for determining, from the mode information, whether there is an undesirable oscillation in the electric power system; and
,a run-time system configured to allow a user to program logic using outputs of the real-time modal analysis module and the real-time mode identification module. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification