The Transactions of the Korean Institute of Electrical Engineers A (대한전기학회논문지:전력기술부문A)

The Korean Institute of Electrical Engineers (대한전기학회)
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Quantitative Evaluation of the Impact of Low-Voltage Loads Due to the Successive Voltage Sags

연속적인 순간전압강하에 의한 저압 부하의 정량적 영향 평가

  • 문종필 (기초과학연구원 전력시스템연구실) ;
  • 김재철 (숭실대 공대 전기제어시스템공학부) ;
  • 윤상윤 (LG산전 전력연구소) ;
  • 강봉석 (숭실대 공대 전기제어시스템공학부)
  • Published : 2004.12.01
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Abstract

Automatic reclosing is a typical protection method in power distribution systems for clearing the temporary faults. However, it has a fatal weakness in regards to voltage sags because it produces successive voltage sags. In this paper, we explored successive impact of voltage sag due to the automatic reclosing of power distribution systems. The actual tests of low voltage loads were accomplished for obtaining the susceptibility of voltage sags. The final results of the test yielded power acceptability curves of voltage sag, and the curves were transformed the 3-dimensional CBEMA(Computer Business Equipment Manufacturer Association) format. For the quantitative evaluation of the impact of successive voltage sags, an assessment formulation using the voltage sag contour was proposed. The proposed formulation was tested by using the voltage sag contour data of IEEE standard and the results of the test. Through the case studies, we verified that the proposed method can be effectively used to evaluate the actual impact of successive voltage sans.

Keywords

References

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