Multi-port Current Limiting DC Circuit Breaker Based on Voltage Clamp Principle

被引：0

作者：

Li G. ^{[1
]}

Song Y. ^{[1
]}

Wang L. ^{[1
]}

Zhao B. ^{[2
]}

Pan Y. ^{[2
]}

Yan K. ^{[1
]}

机构：

[1] School of Electrical Engineering, Northeast Electric Power University, Jilin

[2] Tonghua Power Supply Company of State Grid Jilin Electric Power Co., Ltd., Tonghua

[3] Jilin Power Supply Company of State Grid Jilin Electric Power Co., Ltd., Jilin

来源：

| 1600年 / Automation of Electric Power Systems Press卷 / 45期

基金：

中国国家自然科学基金;

关键词：

DC circuit breaker; DC power grid; Fault current limiting; Multi-port; Thyristor; Voltage clamp;

D O I：

10.7500/AEPS20201209001

中图分类号：

学科分类号：

摘要：

With the wide application of DC power grid technology, as a key protection device, the DC circuit breaker has become the research focus in the related fields. This paper presents a multi-port current limiting DC circuit breaker based on the voltage clamping principle, which has the advantages of low on-state loss, good economy and fast reclosing speed. Firstly, the topology and operation strategy of the new circuit breaker are proposed, in which the fault is removed by the voltage clamping principle and then the branch thyristors are turned off by LC oscillation. Secondly, the bus and line faults are analyzed and deduced, respectively, and then the parameters are designed according to the shutdown process. Finally, the effectiveness and applicability of the proposed circuit breaker are verified by three-terminal DC network model in PSCAD/EMTDC, and two kinds of fault simulation are analyzed. Through the comparative analysis of fault current, system voltage and branch voltage, it is verified that the proposed circuit breaker can replace several conventional circuit breakers, which can reduce the demand for main circuit breakers. © 2021 Automation of Electric Power Systems Press.

引用

页码：170 / 178

页数：8

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