Investigation on the Vacuum Arc Current Commutation Criteria of the Low Voltage DC Hybrid Circuit Breaker
Ge Guowei1, Cheng Xian1, Wang Huaqing1, Xie Wei2, Huang Jinqiang3
1. College of Electrical Engineering Zhengzhou University Zhengzhou 450001 China; 2. State Grid Henan Electric Power Research Institute Zhengzhou 450052 China; 3. College of Electrical Engineering Dalian University of Technology Dalian 116023 China
Abstract:The vacuum arc current commutation characteristic plays an important role on breaking process of the low voltage DC hybrid circuit breaker (HCB). In order to gain the current commutation characteristic and the criteria, the structure and principle of the DC HCB is analyzed and the simplified circuit of the current commutation is proposed. The test circuit of the vacuum arc current commutation is set up. The vacuum arc development is observed by the high speed CMOS camera and the influence of the main current, commutation circuit parameters and arcing time on the current commutation is investigated. Based on the test results, the vacuum arc current commutation characteristic and criteria is obtained and the modified criteria are conducted. The breaking test of the 400V/5kA DC HCB is conducted, which also verifies the effectiveness of the criteria. The paper provides the reference of the high performance DC HCB.
葛国伟, 程显, 王华清, 谢伟, 黄金强. 低压混合式直流断路器中真空电弧电流转移判据[J]. 电工技术学报, 2019, 34(19): 4038-4047.
Ge Guowei, Cheng Xian, Wang Huaqing, Xie Wei, Huang Jinqiang. Investigation on the Vacuum Arc Current Commutation Criteria of the Low Voltage DC Hybrid Circuit Breaker. Transactions of China Electrotechnical Society, 2019, 34(19): 4038-4047.
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