摘要
为了探究干式空心并联电抗器匝间短路后的参数变化,建立了匝间短路故障下的等值电路模型,计算了不同频率、故障层、故障高度下等值电阻和等值电感的变化量。结果表明,随频率的升高电抗器匝间短路引起的等值电感和电阻变化量增加,尤其在外部中间层位置短路时变化量最为明显。因此在电抗器的日常监测中,应重点加强在高频电压下电抗器外层包封的电气参数测量。
For studying the parameter variation of dry-type air-core shunt reactor after inter-turn short circuit, the equivalent circuit model under inter-turn short circuit fault is set up. The variation of equivalent resistance and inductance under different frequency, fault layer and height is calculated. The results show that the variation of equivalent inductance and resistance due to inter-turn short circuit of reactor increases with the increase of frequency, especially in the external middle layer the middle of the outer layer, the change is the most obvious. Therefore, in the daily monitoring of reactor, the electric parameters measurement of reactor external encapsulation under high frequency voltage shall be especially strengthened.
出处
《电力电容器与无功补偿》
北大核心
2015年第6期86-90,共5页
Power Capacitor & Reactive Power Compensation
关键词
干式空心并联电抗器
匝间短路
频率响应
dry hollow shunt reactor
inter-turn short circuit
frequency response
