快速真空断路器分闸速度对短路电流开断燃弧时间窗口的影响  

Influence of Opening Velocity on Short⁃circuit Current Interruption Arcing Time Windows of a Fast Vacuum Circuit Breaker

作　　者：艾绍贵 姚晓飞 史雯 马云龙 李秀广 赵冠楠 周秀 樊益平 AI Shaogui;YAO Xiaofei;SHI Wen;MA Yunlong;LI Xiuguang;ZHAO Guannan;ZHOU Xiu;FAN Yiping(Power Research Institute of the State Grid Ningxia Power Company Limited,Yinchuan 750002,China;State Key Laboratory of Electrical Insulation and Power Equipment,Xi’an Jiaotong University,Xi’an 710049,China;Ningdong Power Supply Company of the State Grid Ningxia Power Company Limited,Ningxia Lingwu 750409,China)

机构地区：[1]国网宁夏电力有限公司电力科学研究院,银川750002 [2]西安交通大学,电力设备与电气绝缘国家重点实验室,西安710049 [3]国网宁夏电力有限公司宁东供电公司,宁夏灵武750409

出　　处：《高压电器》2020年第5期8-12,共5页High Voltage Apparatus

基　　金：国家电网有限公司科技项目(5229DK17000V)。

摘　　要：快速真空断路器由于其具有分闸时间短、分散性低等优势,便于电力系统短路故障选相快速开断的实现。然而,现阶段关于快速真空断路器短路电流可靠开断燃弧时间区间的研究仍属空白。文中目标旨在研究快速真空断路器分闸速度对其可靠开断的燃弧时间区间的影响。实验采用直径为58 mm、材料为CuCr50的平板触头。快速真空断路器分闸速度分别设置为2.5、3.5、4.5 m/s。实验依据国家标准GB/T 1984—2014关于40.5 kV T100s(b)试验方式进行。结果显示,随着快速真空断路器分闸速度的提升,其可靠开断的最短燃弧时间和最长燃弧时间呈降低趋势。研究结果可为快速真空断路器短路电流可靠选相开断策略的制定提供理论依据和技术支撑。It becomes possible for controlled switching technologies to eliminate a short⁃circuit fault in power sys⁃tems,since a fast vacuum circuit breaker(FVCB)has an advantage of a shorter and a lower dispersity on opening time.The objective of this paper is to investigate the influence of an opening velocity on the arcing time window of the FVCB.A kinds of butt⁃type contact is used in the experiment,with the contact diameter is 58 mm,and the contact material is CuCr50.The opening velocity of the test FVCB includes 2.5 m/s,3.5 m/s and 4.5 m/s.The experiment is performed according to the test duty T100s(b)of 40.5 kV specified in the national standard GB/T 1984—2014.Re⁃sults show that both the reliable interrupting minimum arcing time and the maximum arcing time decrease with the in⁃creasing of the opening velocity.The results can provide theoretical basis and technical support for the research on the strategy for the FVCB for a reliable controlled switching of the short circuit current.

关 键 词：燃弧时间窗口 分闸速度 快速真空断路器 选相开断 

分 类 号：TM713[电气工程—电力系统及自动化] TM561.2