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http://dx.doi.org/10.5370/KIEEP.2010.59.2.154

Reliability Evaluation of Power Distribution System Considering Maintenance Effects  

Moon, Jong-Fil (충주대학교 첨단과학기술대 전기공학과)
Shon, Jin-Geun (경원대학교 공대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers P / v.59, no.2, 2010 , pp. 154-157 More about this Journal
Abstract
In this paper, the Time-varying Failure Rates(TFR) of power distribution system components are extracted from the recorded failure data of KEPCO(Korea Electric Power Corporation) and the reliability of power distribution system is evaluated using Mean Failure Rate(MFR) and TFR. The TFR is approximated to bathtub curve using the exponential and Weibull distribution function. In addition, Kaplan-Meier estimation is applied to TFR extraction because of incomplete failure data of KEPCO. Also the reliability of the real power distribution system of Korea is evaluated using the MFR and TFR extracted from real failure data, respectively and the results of each case are compared with each other. As a result, it is proved that the reliability evaluation using the TFR is more realistic than MFR. In addition, it is presented that the application method at power distribution system maintenance and repair using the result of TFR.
Keywords
Time-Varying Failure Rates(TFR); Reliability; Power Distribution System; Mean Failure Rate(MFR);
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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