Establishment of Diagnostic Criteria in the Preventive Diagnostic System for the Power Transformer

전력용 변압기 예방진단새스템의 진단기준치 실정

  • Published : 2005.09.01

Abstract

The preventive diagnostic technique prevents transformers from power failure through giving alarm and observing transformers in service. And it helps to establish the plan for optimum maintenance of the transformer as well as to find location or cause of fault using accumulated data. Data detection and experience of the preventive diagnostic system need to establish the preventive diagnostic algorithm regarding interrelationship between detected data and deterioration of equipment. Therefore in-depth analysis about the preventive diagnosis system is required. KEPCO has adopted the preventive diagnostic system at nine 345kV substations since 1997. Techniques for component sensors of the preventive diagnosis system were settled but diagnosis algorithm, diagnostic criteria and practical use of accumulated data are not yet established. This paper, to build up the base of preventive diagnostic algorithm for the Power transformer. investigated the preventive diagnostic criteria for the power transformer.

Keywords

References

  1. Y.Fujimoto, et. al., 'Operation of an On-Line Substation Diagnosis System', IEEE Transaction on Power Delivery, Vol.3, No.4, pp.1628-1635, 1988 https://doi.org/10.1109/61.193964
  2. T.Kawada, T.Yamagiwa and F.Endo, 'Predictive Maintenance Systems for Substations', Hitachi Review, Vol.40, No.2, pp.135-144, 1991
  3. J.S. Pearson, B.F. Hampton and A.G. Sellars, 'A continuous UHF monitor for gas-insulated substations,' IEEE Transactions on Electrical Insulation, Vol. 26, No.3, pp.469-478, 1991 https://doi.org/10.1109/14.85119
  4. 권동진 외, '초음파 신호 수의 이동평균에 의한 전력용 변압기의 예방진단,' 대한전기학회 논문지, Vol.45, No.3, pp.432-437, 1996
  5. 권동진, '온라인 변압기 부분방전 측정기법 적용,' 대한전기학회 논문지, Vol.50C, No.8, pp.394-400, 2001
  6. 권 동진 외, '765kV 변전기기 예방진단시스템 개발', 한전전력연구원 최종보고서, pp.1-128, 2001