摘要
在出现近区故障时,由于线路侧初始瞬态恢复电压上升率较高,对于SF6高压断路器而言,近区故障开断条件更为苛刻。文中从三角波产生的原理和试验方面,对其进行了全面的研究,并通过PSCAD仿真、低压模拟试验和高压试验对比,分析了人工链路杂散参数和低压模拟装置二极管结电容对高压试验结果的影响,最终得出结论:杂散电容导致人工链路实际投入数值比仿真时较小;低压模拟装置二极管结电容会导致人工链路在高压试验时参数偏高。
For the SF6 high-voltage breakers,when the short-line fault occurs, because of the higher rising rate of initial transient recovery vohage（TRV）,it＇s harder to clear the fault current. This paper provides a comprehensive research about the triangle wave TRV,based on the process of traveling waves and short-line fault test in laboratory.Based on PSCAD simulation,comparing low-voltage simulation and high power test,the influences of the stray parameters of artificial line and the capacitance of the diode, on the actual results during high-power test are analyzed. Eventually come to the conclusion：first,the actual capacitance value is lower than PSCAD simulation, because of the stray capacitance;second ,the actual parameters in high power test are higher than low-voltage simulation, because of the capacitance of the diode, so, try to adopt small current and multiple diode series modes.
作者
阎对丰
王培人
王安
刘平
刘朴
李刚
姚远
程茵
YAN Duifeng WANG Peiren WANG An LIU Ping LIU Pu LI Gang YAO Yuan CHENG Yin(Xi＇an High Voltage Apparatus Research Institute Co., Ltd., Xi＇an 710077, China)
出处
《高压电器》
CAS
CSCD
北大核心
2017年第8期17-21,共5页
High Voltage Apparatus
关键词
人工链路
近区故障试验
高压断路器
合成试验
三角波
artificial line
short-line fault test
high-voltage breaker
synthetic test
triangle wave
