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

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on the Reliability Index and Customer Density of Distribution System

배전계통의 신뢰도 지수와 수용가 밀도에 관한 연구

  • 배인수 (강원대학교 전기공학과) ;
  • 김진오 (한양대학교 전기생체공학부)
  • Received : 2011.03.29
  • Accepted : 2011.08.23
  • Published : 2011.09.01
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Abstract

SAIDI(System Average Interruption Duration Index) is the index that signifies the power quality of customers. SAIDI is also used to know how well utilities operate their systems. The annual interruption time in the areas that consists of widely distributed customers, is generally longer than that in the areas that consists of heavily concentrated customers. The Reliability index of huge system is not necessarily better or worse than that of small system, because SAIDI is irrelevant to the total amount of power sold or the total number of customers. This paper proposes a customer density very relevant to SAIDI. The proposed customer density is used to modify the existing SAIDI to more clearly express the service level of power supply. A modified WSAIDI(weighted SAIDI) can be a useful indicator helping utilities improve the reliability of their systems and customers evaluate the service level of receiving power.

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References

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