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Delayed Current Zero Crossing Characteristics for Circuit Breaker Interrupting Short-Circuit Current Following Permanent Single-phase Ground Fault on Short 1000kV AC Lines

descriptionPublicationkeyboard_double_arrow_right Article , Other literature type 01 Mar 2019Publisher:IEEEJournal:2019 IEEE Asia Power and Energy Engineering Conference (APEEC)

Authors: Zha Zhipeng; Wan Lei; Ying Lou; Zhenqiang Li;

doi: 10.1109/apeec.2019.8720341

Delayed Current Zero Crossing Characteristics for Circuit Breaker Interrupting Short-Circuit Current Following Permanent Single-phase Ground Fault on Short 1000kV AC Lines

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Abstract

For double or multiple circuits of 1000kV lines on the same tower, where a permanent single-phase ground fault occurs on one circuit, delayed current zero crossing may take place during single-phase reclosing of circuit breaker. This may overburden and even damage the breaker. This paper uses the ATP-EMTP program to simulate various operating conditions of a 1000kV system with varying grid configuration, line length, number of circuits, time of single-phase reclosing and location of fault, and proposes the probability of occurrence of delayed current zero crossing accordingly.

Related Organizations

Electric Power Research Institute
United States
CHINA ELECTRIC POWER RESEARCH INSTITUTE (SEAL) SOE
China (People's Republic of)

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