전기학회논문지 (The Transactions of The Korean Institute of Electrical Engineers)

  • 제66권3호
  • /
  • Pages.475-485
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  • 2017
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  • 1975-8359(pISSN)
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  • 2287-4364(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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두 종류의 부하곡선에 관한 공급지장시간기대치(LOLE)의 상호 변환관계성

Conversion Function and Relationship of Loss of Load Expectation Indices on Two Kinds of Load Duration Curve

  • Lee, Yeonchan (Dept. of Electrical Engineering, Gyeonsang National University) ;
  • Oh, Ungjin (Dept. of Electrical Engineering, Gyeonsang National University) ;
  • Choi, Jaeseok (Dept. of Electrical Eng., RIGET, ERI, Gyeongsang National University) ;
  • Cha, Junmin (Dept. of Electrical Engineering, Daejin Univerity) ;
  • Choi, Hongseok (KOREA POWER EXCHANGE(KPX)) ;
  • Jeon, Donghun (KEPCO Research Institute)
  • 투고 : 2016.04.05
  • 심사 : 2017.02.08
  • 발행 : 2017.03.01
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초록

This paper develops a conversion function and method transforming from daily peak load curve used $LOLE_D$ [days/year] to hourly load curve used $LOLE_H$[hours/year]and describes relationship between $LOLE_D$ [days/year] and $LOLE_H$ [hours/year]. The indices can not only be transformed just arithmetically but also have different characteristics physically because of using their different load curves. The conversion function is formulated as variables of capacity and forced outage rate of generator, hourly load daily load factor and daily peak load yearly load factor, etc. Therefore, the conversion function (${\gamma}={\varphi}$(.)) can not be simple. In this study, therefore, the function is formulated as linear times of separated two functions. One is an exponential formed conversion function of daily load factor. Another is formulated with an exponential typed conversion function of daily peak load yearly load factor. Futhermore, this paper presents algorithm and flow chart for transforming from $LOLE_D$[days/year] to $LOLE_H$[hours/year]. The proposed conversion function is applied to sample system and actual KPS(Korea Power System) in 2015. The exponent coefficients of the conversion functions are assessed using proposed method. Finally, assessment errors using conversion function for case studies of sample system and actual system are evaluated to certify the firstly proposed method.

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참고문헌

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