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

The Korean Institute of Electrical Engineers (대한전기학회)
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Calculation of the Area of Severity for Voltage Sag Assessment

순간전압강하 평가를 위한 가혹지역의 계산

  • 박창현 (부경대학교 전기공학과) ;
  • 홍준희 (경원대학교 IT대학 정보통신공학)
  • Received : 2010.04.26
  • Accepted : 2010.05.22
  • Published : 2010.06.01
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Abstract

This paper presents a calculation method of the area of severity for the stochastic assessment of voltage sags. In general, the annual expected numbers of voltage sags at an individual load point can be estimated stochastically. However, in order to assess the system voltage sag performance considering many sensitive load points together, it is necessary to determine and analysis the area of severity for the load points. The area of severity to voltage sags is the network region where the fault occurrences will simultaneously lead to voltage sags at different load points. In this paper, the concept of the voltage sag assessment and the calculation method of the area of severity are addressed. The analysis of the area of severity is performed on the IEEE 30-bus test system by using the proposed method. The method is useful for the stochastic assesment of voltage sags and the establishment of systematic plans for voltage sag mitigation.

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References

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