Interruption Characteristics of High-speed Switches in 500 kV Fault Current Limiter with High Coupled Split Reactance

作     者：Yanzhe Zhang Shixin Xiu Qiang Tang Shenli Jia Bo Chu Wenxiong Mo Yong Wang Haibo Su 

作者机构：State Key Laboratory of Electrical Insulation and Power Equipmentthe School of Electrical EngineeringXi'an Jiaotong UniversityXi'an 710049China. Test and Research Institute of Guangzhou Power Supply Company Ltd.Guangzhou 510410China. 

出 版 物：《CSEE Journal of Power and Energy Systems》 (中国电机工程学会电力与能源系统学报（英文）)

年 卷 期：2023年第9卷第4期

页      面：1577-1584页

核心收录：

学科分类：080802[工学-电力系统及其自动化] 0808[工学-电气工程] 08[工学] 

基　　金：supported by the National Key R&D Program of China(2018YFB0904300) 

主　　题：Fault current limiter(FCL) high coupled split reactor(HCSR) high-speed switch interruption characteristics short circuit current. 

摘      要：A 500 kV high-voltage AC fault current limiter(FCL)based on a high coupled split reactor(HCSR)is pro-posed by the National key R&D project *** impedance under normal conditions and high impedance under short-circuit conditions are accomplished by the cooperation of HCSR and high-speed ***-speed switches play an important role in current limiting processes,thus interruption characteristics of the high-speed switch in the 500 kV FCL are studied in this *** simulation model of the FCL and the external equivalent power grid are *** short-circuit current and recovery voltage characteristics of the high-speed switch in FCL are *** results show that maximum DC component of the short-circuit current of the high-speed switch reaches 91%,the maximum peak value is 118 kA,and the longest arcing time is 14.8 *** is a discontinuity in the curve of the short-circuit current peak and arcing time as a function of the short-circuit occurrence time;the peak recovery voltage of a single break of the high-speed switch has a maximum value of 87.5 kV under a three-phase ungrounded short-circuit condition,and the rate of rise of recovery voltage is o.22 kV/*** recovery voltage peak shows a period change with the short-circuit occurrence time,and the period is 10 *** effects of the shunt capacitor value and short-circuit ground resistance on the recovery voltage of high-speed switching are also *** research can be used for reference by R&D personnel and *** Terms-Fault current limiter(FCL),high coupled split reactor(HCSR),high-speed switch,interruption characteristics,short circuit current.