摘要
超高压并联电抗器运行过程中内部松动构件会因为振动产生悬浮放电,目前国内还没有针对这类放电建立特征图谱,作者在分析高压并联电抗器振动位移与电压电流间相位关系的基础上,通过Matlab的Simulink模块搭建了高压并联电抗器机电模型,研究了振动构件悬浮放电脉冲的相位特征。结果表明振动构件悬浮放电脉冲位于电压过零点附近,这与传统的电压峰值点附近的悬浮放电、电晕放电有着明显区别。通过对新疆某750kV枢纽变电站超高压并联电抗器的现场检测及内部检查,对该特征进行了实际验证。研究结果对于超高压并联电抗器振动构件悬浮放电的实际检测具有一定的指导意义。
During the operation of extra-high voltage shunt reactors,there will be floating discharge in the internal loose components due to vibrations.In this paper,since no specific chromatogram has been set up for such discharge in China,this paper establishes the electromechanical model of high voltage shunt reactor by Matlab Simulink module based on the phase relationship between the vibration displacement of the high voltage shunt reactor and the voltage and current.The phase characteristics of floating discharge pulse of the vibrating component were studied.The results show that the floating discharge pulse of the vibrating component is located just above the null point of the voltage,which is obviously different from the floating discharge and corona discharge near the traditional voltage peak point.This feature is verified by field detection and internal inspection of the extra high voltage(EHV)shunt reactor in a 750kV-load-center substation in Xinjiang.The results have certain significance for the actual detection of the floating discharge of the vibrating components of the EHV shunt reactor.
作者
杨定乾
马勤勇
项阳
孟庆民
Yang Dingqian;Ma Qinyong;Xiang Yang;Meng Qingmin(State Grid Xinjiang Electric Power Researcher Institute Urumqi 830011 China;Shenyang Transformer Research Institute Shenyang 110122 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2018年第24期5830-5837,共8页
Transactions of China Electrotechnical Society
关键词
电抗器
振动
悬浮
脉冲
放电
相位特征
Shunt reactor
vibration
suspended
pulse
discharge
phase characteristics
