故障位置和频率对干式空心并联电抗器参数的影响  

Influence of Fault Position and Frequency on Parameters of Dry-type Air-core Shunt Reactor

作　　者：郭小兵[1,2] 谭向宇[1] 朱涛 王岩[1,2] 吴彦玲[1,2] 

机构地区：[1]昆明理工大学云南电网公司研究生工作站,云南昆明650217 [2]昆明理工大学,云南昆明650500 [3]云南电力调度控制中心,云南昆明650011

出　　处：《电力电容器与无功补偿》2015年第6期86-90,共5页Power Capacitor & Reactive Power Compensation

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.

关 键 词：干式空心并联电抗器 匝间短路 频率响应 

分 类 号：TM472[电气工程—电器]