基于VSC的直流配电系统过电流保护研究

王义军; 张岩亮

王义军,张岩亮.基于VSC的直流配电系统过电流保护研究[J].电测与仪表,2016,53(12):.
WANG Yijun,Zhang Yanliang.Overcurrent Protection on VSC-Based DC Distribution Systems[J].Electrical Measurement & Instrumentation,2016,53(12):.

基于VSC的直流配电系统过电流保护研究

Overcurrent Protection on VSC-Based DC Distribution Systems

DOI：

中文关键词: 直流配电电力电子换流器保护过电流

英文关键词:DC distribution, power-electronic converters, protection, overcurrent

基金项目:

作者中文名	作者英文名	单位
王义军	WANG Yijun	东北电力大学电气工程学院
张岩亮	Zhang Yanliang	东北电力大学电气工程学院

摘要点击次数: 1451

中文摘要:

本文提出了一种利用现代化的电压源换流器代替快速作用的限流断路器的保护方案。本文研究了故障检测和故障定位,以及在多端直流配电系统中快速中断故障所面临的主要挑战。由智能继电器和换流器构成的系统保护体系取得了良好效果。保护继电器通过监控本地的信息量来检测和隔离故障。结果表明,在采用继电器的情况下,采用过电流的保护方案可以满足快速响应的要求。本文将会通过仿真来证明提出的保护体系的有效性。

英文摘要:

This paper proposes a protection scheme which utilizes modern voltage-source converters as fast-acting current-limiting circuit breakers. This paper investigates the main challenges of detecting and localizing a fault, and interrupting it as quickly as possible in a multiterminal dc system. A system protection scheme consisting of smart relays associated with converters has been developed. The protection relays monitor local quantities to detect and isolate disturbances/faults. It is shown that overcurrent-based schemes can be adopted for these relays to meet the fast response requirements. The effectiveness of the proposed protection scheme is illustrated through simulations.

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