直流断路器 | Development and Application of a 10 kV Mechanical DC Circuit Breaker
Qu, Lu; Yu, Zhanqing; Xiao, Xiang; Zhao, Wei; Huang, Yulong; Zeng, Rong
（1. State Key Lab of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing, 100084, China; 2.DC Research Center, Energy Internet Institute, Tsinghua University, Beijing, 100084, China;3. Electric Power Research Institute, Guangdong Power Grid Co., Ltd., Guangzhou, 510080, China）
Abstract:
A DC circuit breaker is piece of core equipment for DC grid construction and can achieve fast isolation of DC faults in the grid. In this paper, based on the fault characteristics and protection requirements of an AC/DC hybrid distribution network, the technical parameters and topology structure of an inductance and capacitance (LC) resonant commutation-type mechanical DC breaker are proposed. Furthermore, an engineering prototype of the mechanical DC circuit breaker is developed, then a small current breaking test and a large current breaking test are carried out. The test results show that a 10 kA fault current can be interrupted within 10 ms by the engineering prototype. Finally, the engineering prototype of the mechanical DC circuit breaker is installed in the AC/DC hybrid distribution network project, and a current breaking test is carried out. The test results show that the mechanical DC circuit breaker has good running conditions, and the function and performance meet the engineering design and operation requirements.
Published in: ENERGIES（Volume:12, Issue:19, Oct 2019）
Paper No.:3615
Date of Publication: Oct 2019
Cite this:
Qu Lu; Zeng Rong; Yu Zhanqing; Li Ge，“Design and test of a magnetic saturation-type fault current limiter”，JOURNAL OF ENGINEERING-JOE ，no. 16, pp. 2974-2979, MAR 2019.
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