±800kV特高压直流输电系统用直流断路器研究  

Study on DC Circuit Breaker for ±800kV UHVDC System

作　　者：李宾宾[1] 苟锐锋[1] 张万荣[1] 

机构地区：[1]西安高压电器研究所,陕西省西安市710077

出　　处：《电力设备》2007年第3期8-11,共4页Electrical Equipment

摘　　要：本文详述了±800kV特高压直流系统用直流断路器的功能作用,介绍了直流断路器的工作原理及组成结构。依据实际特高压直流工程的有关条件与参数,应用PSCAD/EMTDC程序对直流断路器转换直流电流的过程进行了计算研究,获得了直流断路器的电流转换能力、恢复电压耐受能力及能量吸收能力等关键参数,为进行特高压直流工程用直流断路器的研制提供了依据。另外,文章还对直流断路器在试验室进行电流转换试验的试验方法与试验回路进行了分析和探讨。This paper stated the function of DC circuit breaker for ±800 kV UHVDC system in detail, introduced the principles and composition structure of DC circuit breaker. According to the parameters and the relevant conditions of UHVDC project, the course of DC current conversion in DC circuit breaker was calculated using program of PSCAD/EMTDC, from which the crucial parameters can be got, such as the current conversion ability of DC circuit breaker, withstand voltage ability and energy absorption ability. The paper provided the basis for the R＆D of DC circuit breaker of UHVDC project. The testing method and testing loop of current conversion for DC circuit breaker in lab was also analyzed and discussed.

关 键 词：电力系统 特高压直流 直流断路器 电流转换 

分 类 号：TM721.1[电气工程—电力系统及自动化] TM561