Applying fuzzy logic to power system protective relays
- Bowling Green State Univ., OH (United States)
Power systems occasionally experience faults resulting from insulation failures caused by atmospheric disturbances or switching surges. If such a fault occurs, it can cause expensive damage to equipment and substantial revenue loss due to service interruption. A faulted element must, therefore, be disconnected without unnecessary delay. For this purpose, protective relays continuously monitor system elements (synchronous generators, transformers, transmission lines, motors, etc.) and isolate faulted elements by operating by operating circuit breakers. Originally, protective relays were designed containing electromechanical devices. Recently, however, rapid advances in digital-processor technology have prompted applying microprocessors to protective relays. This artical presents an application of a fuzzy-logic (FL) technique to microprocessor-based power system protective relays specifically for identifying unbalanced shunt faults on a power transmission line. 10 figs.
- OSTI ID:
- 569196
- Journal Information:
- InTech, Vol. 44, Issue 6; Other Information: PBD: Jun 1997
- Country of Publication:
- United States
- Language:
- English
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