An Adaptive Reclosing Strategy for Mechanical DC Circuit Breaker

被引：0

作者：

Guo Y. ^{[1
,3
]}

Wang Y. ^{[1
,3
]}

Li H. ^{[2
]}

Wang M. ^{[1
,3
]}

Wang G. ^{[2
]}

机构：

[1] School of Electrical Engineering, Zhengzhou University, Zhengzhou

[2] School of Electric Power Engineering, South China University of Technology, Guangzhou

[3] Henan Provincial Engineering Technology Research Center of Power Electronics and Energy Systems, Zhengzhou

来源：

Gaodianya Jishu/High Voltage Engineering | 2022年 / 48卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Adaptive reclosing; DC circuit breaker; Fault property identification; Instantaneous fault; Mechanical DC circuit breaker; Permanent fault;

D O I：

10.13336/j.1003-6520.hve.20201478

中图分类号：

学科分类号：

摘要：

Timely reclosing DC circuit breaker (DCB) can reduce the adverse effect of instantaneous faults and improve the transmission efficiency of DC lines. However, reclosing mechanical DCB may lead to a fault current impulse or line voltage oscillation. To solve this problem, the equivalent circuit of the system during reclosing the mechanical DCB is established, and the transient characteristics of the capacitor voltage during the permanent fault and the instantaneous fault are analyzed. Thereafter, the low-pass filter value of the capacitor voltage increment is used to identify the fault properties, and thus an adaptive reclosing strategy suitable for the mechanical DCB is proposed. Finally, the effectiveness of the proposed strategy is validated using PSCAD /EMTDC simulations. The analysis and simulation results show that the proposed strategy can effectively suppress the fault current impulse during the permanent fault and the line voltage oscillation during the transient fault. © 2022, High Voltage Engineering Editorial Department of CEPRI. All right reserved.

引用

页码：1961 / 1969

页数：8

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