基于晶闸管的主动关断型双向直流固态断路器  

Thyristor-based Active Turn-off Bidirectional DC Solid State Circuit Breaker

作　　者：贺嵩铭 朱晋[1,2] 曾庆鹏 王道祺 吴理心 韦统振[1,2] HE Songming;ZHU Jin;ZENG Qingpeng;WANG Daoqi;WU Lixin;WEI Tongzhen(Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China;School of Electrical Engineering,University of Jinan,Jinan 250022,China)

机构地区：[1]中国科学院电工研究所,北京100190 [2]中国科学院大学,北京100049 [3]济南大学自动化与电气工程学院,济南250022

出　　处：《高电压技术》2025年第4期1857-1866,共10页High Voltage Engineering

基　　金：国家重点研发计划(2023YFB2405905);山东能源研究院企业联合基金(SEI U202310)。

摘　　要：随着直流供电系统的不断发展,直流故障保护问题日益凸显,用于故障隔离的直流断路器被广泛应用。基于晶闸管的固态断路器具有低损耗和低成本的优势,但是晶闸管无法被控制关断的特性制约了这类断路器的发展,目前的部分方案存在无法可靠重合闸、损耗大的缺点。为此,提出了一种基于晶闸管的新型双向直流固态断路器拓扑结构,实现了主动可靠关断与软重合闸功能,消除了MOV的断态漏电流,具有高可靠性和低损耗的优势。文中详细阐述了断路器在3种模式下的工作原理,给出了参数设计依据;仿真和实验表明,所提拓扑可以主动可靠分断短路故障,并通过软重合闸判断故障类型。With the continuous development of DC power system,DC fault protection problems are becoming more prominent,circuit breakers are widely used to isolate faults.Thyristor-based solid state circuit breakers demonstrate low losses and low costs,but the characteristic that thyristors can not be controlled to turn-off has limited the development of these circuit breakers,some current solutions have disadvantages of unreliable reclosing and high losses.This article proposes a novel bidirectional DC solid state circuit breaker;reliable active turn-off,soft reclosing and MOV off-state leakage current elimination create advantages in high reliability and low losses.The working principles in three modes and parameters design are described in detail.Simulations and experiments show that the proposed topology can actively interrupt short-circuit faults,and distinguish the type of fault by soft reclosing.

关 键 词：直流电网 固态断路器 直流断路器 晶闸管 故障保护 主动关断 

分 类 号：TM561[电气工程—电器]