대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 1999년도 추계학술대회 논문집 학회본부 C
- /
- Pages.1044-1047
- /
- 1999
대용량 터빈발전기에서 접지과전압 계전기의 동작 특성
Dynamic Property of Ground Overvoltage Relay in Large Turbine Generator
-
Kim, Hee-Dong
(Korea Electric Power Research Institute)
;
- Lee, Young-Jun (Korea Electric Power Research Institute) ;
- Kim, Byong-Han (Korea Electric Power Research Institute) ;
- An, Joon-Young (Younggwang Nuclear Power Division) ;
- Chae, Gyu-Jin (Younggwang Nuclear Power Division)
- 발행 : 1999.11.20
초록
This paper deals with the dynamic property of ground overvoltage relay in large turbine generator. Relay operation is based on detecting the fundamental voltages originating from the generator. Calculations of fault voltage and current are reviewed for the neutral ground resistance. The frequency, ampitude and waveform of individual harmonics were measured using power quality analyzer and memory hi-corder at the secondary side of ground potential transformer. The ac and dc high-potential tests were applied to evaluate the condition of generator, main and auxiliary transformer, isolated phase bus, potential transformer, surge capacitor and arrester.
키워드