混合型限流断路器在高短路电流上升率时换流试验分析  

Test Analysis of Commutating Process for Hybrid Current-limiting Circuit Breakers with High Rising Rate Current

作　　者：王晨[1] 庄劲武[1] 张晓锋[1] 江壮贤[1] 杨锋[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》2009年第16期65-70,共6页Automation of Electric Power Systems

基　　金：国家自然科学基金委员会创新研究群体基金资助项目(50721063);国家自然科学基金资助项目(50877078)~~

摘　　要：提出了一种基于高速斥力开关和双向晶闸管开关的新型混合型限流断路器方案,在研制出3kA/320V限流断路器样机基础上,对其在高短路电流上升率时的换流过程进行了分析和试验研究。推导了换流过程的等效电路模型和换流时间的计算公式,并进行了不同电流上升率的限流试验以验证所建模型的正确性。通过减小换流支路电感和减小斥力开关动作延时,样机成功实现了13.6kA的电流转移(电流上升率为26A/μs)及限流分断,换流时间仅为100μs。A novel hybrid current-limiting circuit breaker based on high speed electro-magnetic driven switch and bi-directional thyristor switch is presented. A 3 kA/320 V current-limiting circuit breaker is developed and the commutating process is analyzed with high rising rate current. The equivalent circuit model and calculating formulas are obtained. The experimental results by different di/dt values show that the equivalent circuit model is correct. By reducing inductance of commutating circuit and delayed time of electro-magnetic driven switch, the current of 13.6 kA is transferred within 100 μs successfully. This work is supported by National Natural Science Foundation of China for Innovation Research Group （No. 50721063） and National Natural Science Foundation of China （No. 50877078）.

关 键 词：混合型限流器 限流断路器 电磁斥力开关 快速晶闸管 

分 类 号：TM561[电气工程—电器]