新型混合型限流断路器分析及试验  

Analysis and Test of Novel Hybrid Current-limiting Circuit Breakers

作　　者：王晨[1] 庄劲武[1] 张晓锋[1] 江壮贤[1] 刘路辉[1] 戴超[1] 

机构地区：[1]海军工程大学电气与信息工程学院,湖北省武汉市430033

出　　处：《电力系统自动化》2010年第15期60-65,共6页Automation of Electric Power Systems

基　　金：国家自然科学基金资助项目(50721063;50877078);湖北省杰出青年基金资助项目(2007ABB001)~~

摘　　要：研究了一种基于高速斥力开关的交直流两用混合型限流断路器方案,该限流断路器在限流过程中先经过一个强迫换流过程,使得触头分离时高速斥力开关上电流减小到较小值,触头分离后再经历一个自然零电压换流过程,将斥力开关电流换流到二极管支路上。重点对限流断路器换流过程进行了理论分析及仿真,分析了其可能出现的4种分断情况。研制了400V/500A限流断路器样机,并进行了不同短路电流上升率的限流试验,验证了理论分析的正确性。A new AC-DC hybrid current-limiting circuit breaker （HCLCB） based on high speed repulsion driving switch is researched. At fault conditions the HCLCB firstly experiences a forced current switching process and the current of high speed electromagnetic repulsion switch is reduced nearly to zero when the contact separation starts; then it experiences a natural ZVS process and the current of electromagnetic repulsion switch is transferred to the diodes. The theoretical analysis and simulation of commutation are carried out and four interrupting cases are analyzed. A 400 V/500 A hybrid current-limiting circuit breaker has been realized. The limiting tests of different di/dt validate that the theoretical analysis is correct.

关 键 词：混合型限流断路器 零电压换流 高速斥力开关 

分 类 号：TM561[电气工程—电器]