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Optimization of Preventative Maintenance Cycle for Equipments of Pumped-Storage Power Plant by Taking into Account Reliability and Economical Efficiency

신뢰도 및 경제성에 기반한 양수 발전 설비의 예방점검 주기 최적화 연구

  • Received : 2010.06.07
  • Accepted : 2010.07.14
  • Published : 2010.09.01

Abstract

Recently, the need for improving the economical efficiency of pumped-storage power plants has increased because of the decrease in the availability of electricity caused by an increase in the consumption of electricity at night. Therefore, a preventative maintenance cycle, especially an overhaul cycle, is required. Unconditional extension cannot be implemented because it may cause unanticipated failures due to insufficient maintenance. Therefore, in this study, a methodology for optimizing the preventative maintenance cycle by taking into account both reliability and economical efficiency is presented; this methodology has been developed by reviewing previous studies on reliability and considering the characteristics of pumped-storage power plants. Finally, an extended overhaul cycle is derived by applying this methodology to a domestic pumped-storage power plant.

최근 심야 전기 수요의 증가로 인해 양수 발전 설비의 이용률이 감소하고 있다. 이러한 이용률 감소는 양수 발전 설비를 운용/정비하는 측면에서 경제성을 향상시킬 필요성을 증가시킨다. 양수 발전 설비의 경제성 향상을 위해서는 예방점검 주기, 특히 분해점검 주기를 연장하여야 한다. 그러나, 무조건적인 연장은 불충분한 정비에 기인하는 예기치 못하는 파손을 발생시킬 수 있기 때문에 수행될 수 없다. 따라서 본 연구에서는 양수 발전 설비의 특성을 고려하고 기존 신뢰도 연구들을 검토하여 신뢰도와 경제성을 모두 고려하는 예방점검 주기 최적화 방법론을 제안한다. 최종적으로 실제 양수 발전 설비에 제안된 방법론을 국내 양수발전소에 적용하여 연장된 최적화 분해 점검 주기를 도출한다.

Keywords

References

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