대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 1997년도 하계학술대회 논문집 D
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- Pages.954-957
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- 1997
배전시스템센서의 순간전압강하 분석
Analysis of Voltage Sag on Power Distribution System
- Oh, Jung-Hwan (Dept. of Electrical Engineering Soongsil University) ;
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Rim, Seong-Jeong
(Dept. of Electrical Engineering Soongsil University) ;
- Yun, Sang-Yun (Dept. of Electrical Engineering Soongsil University) ;
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Kim, Jae-Chul
(Dept. of Electrical Engineering Soongsil University)
- 발행 : 1997.07.21
초록
In this paper, we analyze the voltage sag caused by reclosing on electric power distribution system. When a fault is on the electric system, a reclosing operation brings a voltage sag on the feeders which is supplied with a common substation transformer. By analyzing the fault wave-form measured in the field, it is showed that a voltage sag is in proportion to a fault current. Also, we propose an adaptive reclosing scheme. This scheme changes the number of reclosing as a function of the magnitude of a fault voltage and the fault type. As the proposed scheme is compared with conventional scheme in the side of voltage sag and permanent fault, it is verified that the proposed scheme is more effective than conventional scheme.
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