Analysis on Current Commutation Characteristics of a Hybrid HVDC Circuit Breaker

LI Li; ZHANG Bide; FANG Chun’en; TANG Xiaoyu; LI Wei

doi:10.13296/j.1001-1609.hva.2019.08.014

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Analysis on Current Commutation Characteristics of a Hybrid HVDC Circuit Breaker

更新时间：2025-04-26

- Analysis on Current Commutation Characteristics of a Hybrid HVDC Circuit Breaker
- High VoltageApparatus Vol. 55, Issue 8, Pages: 101-107(2019)
- 作者机构：
  
  西华大学电气与电子信息学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2019.08.014
  CLC： TM561
- Published：2019
- 稿件说明：
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[1]李莉,张彼德,方春恩,唐小雨,李伟.一种混合式高压直流断路器的换流特性研究[J].高压电器,2019,55(08):101-107.

LI Li, ZHANG Bide, FANG Chun’en, et al. Analysis on Current Commutation Characteristics of a Hybrid HVDC Circuit Breaker[J]. High voltageapparatus, 2019, 55(8): 101-107.
[1]李莉,张彼德,方春恩,唐小雨,李伟.一种混合式高压直流断路器的换流特性研究[J].高压电器,2019,55(08):101-107. DOI： 10.13296/j.1001-1609.hva.2019.08.014.

LI Li, ZHANG Bide, FANG Chun’en, et al. Analysis on Current Commutation Characteristics of a Hybrid HVDC Circuit Breaker[J]. High voltageapparatus, 2019, 55(8): 101-107. DOI： 10.13296/j.1001-1609.hva.2019.08.014.

摘要

高压直流电网发生短路故障时

为了系统安全稳定运行

直流断路器应在很短的时间内切除故障线路

而电流转移过程是断路器成功切断故障电流的关键。文中对级联全桥混合式高压直流断路器换流过程进行分析

着重研究了故障电流分断过程中断路器的3次换流过程

并建立换流过程的等效模型。在PSCAD/EMTDC中仿真分析了3次换流过程的主要影响因素及其影响规律

得到混合式断路器的换流特性结论

为研制开断时间更短、开断容量更高的直流混合式断路器提供参考。

Abstract

Current commutation is extremely important for a DC circuit breaker to successfully interrupt fault current.In this paper

the transient characteristics of the cascaded full-bridge DC breaker are analyzed with emphasis on three current commutations during the interruption process

and an equivalent model of the commutation process is established.The main influencing parameters of the current commutations and the influencing rule are investigated via PSCAD/EMTDC

and the commutation characteristics of the hybrid circuit breaker are obtained.This study may offer a reference for the development of hybrid HVDC circuit breakers with shorter switching time and higher breaking capacity.

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Related Institution

Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology, Grid Hunan Electric Power Limited Company Power Supply Service Center (Metrology Center)

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