순간전압강하 보상을 위한 확률론적 위험도 분석 연구

Probabilistic Method of Risk Assessment in Voltage Sag Mitigation Studies

  • 한종훈 (고려대학교 전기전자전파공학부) ;
  • 장길수 (고려대학교 전기전자전파공학부) ;
  • 박창현 (부경대학교 전기공학부)
  • Han, Jong-Hoon (School of Electrical Engineering, Korea University) ;
  • Jang, Gil-Soo (School of Electrical Engineering, Korea University) ;
  • Park, Chang-Hyun (Department of Electrical Engineering, Pukyong National University)
  • 투고 : 2010.09.01
  • 심사 : 2010.09.30
  • 발행 : 2010.09.30

초록

전력품질 문제는 다양한 산업분야에서 중요한 역할을 차지한다. 전력품질솔루션 선택의 폭은 점점 다양해지고 있으며, 특히 순간전압강하와 정전에 대한 보상장치를 선정하는 것은 전력회사나 수용가 모두에게 중요한 과제이다. 이것은 기술적인 관점에서 뿐만 아니라 경제적인 관점에서도 같이 고려되어야 하는데 불행히도 지금까지는 주로 경험에 의해 결정되어졌다. 본 논문에서는 순간전압강하 보상장치 선정을 위한 위험도 분석을 확정적 방법과 확률론적 방법으로 수명비용을 계산하여 두 가지 방법의 결과 해석에 대한 차이점을 모의사례를 통하여 비교하고자한다.

Power quality mitigation devices play an important role in lots of industrial segments. Although there were many devices available in the market, the selection of an appropriate device specially for voltage sags and interruptions mitigation has been a challenge in the utility and customer for several years. It usually depends on technical and economic characteristics of the device. Nevertheless, most mitigation method is selected by rule of thumb or empirical method. In this paper, the life cycle cost analysis for the probabilistic risk assesment of voltage sag mitigation method is performed using either the deterministic or probabilistic approach. The difference between a deterministic and a probabilistic cost analysis approach is illustrated with five different case studies. This paper not only provides a comparison of life cycle costing of various devices but it also indirectly shows the possible savings due to the mitigation of voltage sags in the form of a project balance chart.

키워드

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