가스터빈 발전기 회전자 권선의 절연상태 평가

Assessment of Rotor Winding Insulation Condition for Gas Turbine Generators

  • 발행 : 2008.10.01

초록

Several off-line diagnostic tests which include the insulation resistance(IR), polarization index(PI), low-voltage AC, and recurrent surge oscillograph(RSO) tests were performed to assess the condition of generator rotor windings. The low-voltage AC and the RSO tests were performed on the gas turbine generator rotor winding to detect shorted turns. Before intentionally applying artificial shorted faults, it was confirmed by the low voltage AC and the RSO tests that the winding was in sound condition. For simulated shorted rotor winding turns, the RSO test detected the fault in the winding. The RSO test was capable of identifying the number and pole location of the shorted turns for a number of simulated shorted coils.

키워드

참고문헌

  1. 김희동, 이영준, 박종정, 주영호, "발전기 회전자 권선의 운전중 층간단락 탐지", 대한전기학회 논문지, Vol. 48C, No. 3, pp. 192-199, 1999
  2. M. P. Jenkins, "On-Line Monitoring of Rotor Shorted Turns", IEE Conference Publication No. 401, pp. 55-60, 1994
  3. 김희동, 김병한, 황규호, "가스터빈 발전기 회전자 권선용 글라스/에폭시 복합재료의 화학적, 열적 및 유전특성", 대한전기학회 춘계학술대회 논문집, pp. 12-15, 1999
  4. "발전기 회전자 On-Line 단락 감시시스템 개발", TM.98GS06.M1999.137, 한전 전력연구원, 1999
  5. D. R. Albright, Interturn Short-Circuit Detection, Generatortech. Inc., pp. 1-8, 1993
  6. R. T. Hindmarch and J. W. Wood, "Developments in Detecting Interturn Shorts in Generator Rotors using the RSO Technique", Dielectric Materials, Measurements and Application Fifth International Conference, pp. 305-308, 1988