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.

주제어

#Successive Voltage Sags   #Automatic Reclosing   #Power Quality   #Power Acceptability Curve  

참고문헌 (11)

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이 논문을 인용한 문헌 (1)

1. Yun Sang-Yun ; Moon Jong-Fil ; Kim Jae-Chul ; Lee Hee-Tae 2006. "A Study on the Susceptibility of Single-phase Sensitive Loads and the Three-phase Induction Motor by Voltage Sag" 전기학회논문지. The transactions of the Korean Institute of Electrical Engineers. A / A, 전력기술부문, 55(1): 37~44  원문보기 상세보기