Abstract
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. § 이 논문은 2010년도 대한기계학회 신뢰성부문 춘계학술대회 (2010. 5. 27.-28., 전남대 컨벤션홀) 발표논문임. † Corresponding Author, kimjsbat@sunchon.ac.kr © 2010 The Korean Society of Mechanical Engineers
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