摘要
高压开关柜在长期运行过程中会导致绝缘劣化,引起局部放电,威胁电力系统的安全运行。传统的开关柜局部放电检测方法存在着明显的缺点,为了解决这一问题,研发了一种基于脉冲电流法的开关柜局部放电检测装置,借助高压开关柜配置的带电显示器,从带电显示器核相孔获取局部放电信息。设计的可调式耦合电容器使得该装置能够对不同类型的开关柜进行局部放电检测。通过对10 kV开关柜进行的现场试验结果表明,该装置能够检测开关柜内的局部放电,具有精度高、抗干扰能力强等特点。
The insulation of high voltage switchgear will be degraded during long-term operation,resulting in partial discharge and threatening the safe operation of the power system.Some traditional detection methods have some obvious shortcomings.In order to solve this problem,a partial discharge detection device for switchgears is designed based on pulse current method.The partial discharge information can be obtained from the nuclear phase hole in charged display device of high voltage switchgear.This kind of specially designed adjustable coupling capacitor enables this device to carry out partial discharge detection of several different types of switchgears.The field test results for 10 kV switchgear indicate that the device can detect the partial discharge in the switchgear and has the characteristics of high accuracy,strong anti-interference ability and so on.
作者
白鹭
李冠良
郑志宏
BAI Lu;LI Guanliang;ZHENG Zhihong(Electric Power Research Institute of State Grid Shanxi Electric Power Corporation,Taiyuan,Shanxi 030001,China)
出处
《山西电力》
2020年第3期23-26,共4页
Shanxi Electric Power
基金
山西省电力公司科技项目(52053018000M)。
关键词
高压开关柜
局部放电
脉冲电流法
high voltage switchgear
partial discharge
pulse current method
