强制过零型高压直流断路器拓扑优化  

Topology Optimization of HVDC Circuit Breaker with Forced Current Zero

作　　者：方帅[1] 袁召[1] 喻新林 邵敏[1] 赵文婷[1] 何俊佳[1] 潘垣[1] 

机构地区：[1]华中科技大学强电磁工程与新技术国家重点实验室,武汉430074

出　　处：《高压电器》2015年第11期53-58,共6页High Voltage Apparatus

摘　　要：强制过零型直流断路器作为机械式高压直流断路器的主要研究方向,技术简单成熟,动作可靠性高。笔者基于实际直流电网,对直流断路器可能遇到的最严重故障即直流线路整流侧出口短路故障进行了仿真分析,并提出现有强制过零型直流断路器拓扑的两点缺陷。在此分析基础上,提出了在换流电容两端加装避雷器、在平波电抗器两端加装吸能组件的拓扑优化策略,能有效降低换流电容电压峰值和机械开关断口电压峰值。As the main research direction of mechanical HVDC circuit breaker, forced current zero is of simplemature technology and high operating reliability. Based on the actual DC grid, the simulation analysis on the shortcircuit at the rectifier outlet of DC line, may be the most serious malfunction to DC circuit breaker, has beenconducted. On the basis of this analysis, the two flaws of current topology are found and two topology optimizationstrategies are proposed, including installing surge arrester in parallel with the commutation capacitance andinstalling energy absorption components in parallel with the smoothing reactor, which can effectively reduce peakvoltage between commutation capacitance and peak voltage between the mechanical switch.

关 键 词：高压直流断路器 直流开断 真空断路器 强制过零 

分 类 号：TM561[电气工程—电器]