T源阻抗网络低压直流固态断路器拓扑研究  

Topology Research on T-Source Impedance Network Low Voltage DC Solid State Circuit Breaker

作　　者：李长乐 LI Changle(Shanghai Electrical Apparatus Research Institute(Group)Co.,Ltd.,Shanghai 200063,China)

机构地区：[1]上海电器科学研究所(集团)有限公司

出　　处：《电器与能效管理技术》2019年第14期69-76,共8页Electrical & Energy Management Technology

摘　　要：为了解决直流系统快速保护的问题,提出了一种基于T源阻抗网络的低压直流固态断路器,对其拓扑进行了深入的分析和研究。基于T源阻抗网络的低压直流固态断路器(TSDCB)拓扑,分析其工作过程,得出如下结论:断路器输入侧电流可以自动响应故障而使得晶闸管自然换流而关断,断路器输出侧通过阻抗网络对短路点进行放电,使得电源侧不会受到负载侧故障的影响,保障了直流母线上的其他设备可以正常工作,从而提高了系统供电连续性。仿真和试验表明,提出的T源阻抗网络低压直流固态断路器在短路故障时可以快速分断,验证了理论分析的正确性。In order to solve the problem of DC fast protection,the model of a T-source impedance network low voltage DC solid state circuit breaker is proposed.The structural mechanism are deeply studied,analysis and research are embodied.The paper proposed a unidirectional topology structure of T-source impedance network low voltage DC solid state circuit breakers.Through simulations and experiments,the correctness of the above mentioned theoretical analysis can be verified,that is the T-source impedance network low voltage DC solid state circuit breaker proposed can be quickly broken in the event of a short-circuit failure.

关 键 词：直流断路器 阻抗网络 拓扑 晶闸管 

分 类 号：TM561[电气工程—电器]