特高压GIS电流互感器一次检定回路选择及参数测量.pdfVIP

理论与算法 2015.17 特高压GIS电流互感器 一次检定回路选择及参数测量 徐敏锐1,2,卢树峰1,2,黄奇峰1,2,王忠东1,2,杨世海1,2,陈铭明1,2 （1.江苏省电力公司电力科学研究院，南京,211103；2.国家电网公司电能计量重点实验室，南京,210019） 摘要：GIS 线路全封闭的特点使管道内电流互感器的检定试验回路长 , 阻抗大 , 所用设备多 , 难以升至设备额定电流。电流 互感器封装在 GIS 内部，在特高压电站的现场检定时不能将其独立出来，需要选择合适的检定回路。采用无功补偿的方法可以 大大降低升流器和电源容量，而准确的测量出 GIS 一次回路的参数是选择适当无功补偿方法的前提。本文通过分析 GIS 一次 回路的结构和特点，选择出合适的特高压 GIS 电流互感器一次检定回路，并研究出一种新型 GIS 一次回路参数智能测量系统， 为特高压GIS电流互感器智能检定技术提供理论指导。 关键词 ：GIS ；电流互感器；一次回路；回路参数；智能测量 Selection and parameter measurement of a test circuit for the high voltage GIS current transformer 1,2 1,2 1,2 1,2 1,2 1,2 Xu Minrui ,Lu Shufeng ,Huang Qifeng ,Wang Zhongdong ,Yang Shihai ,Chen Mingming （1.Electric Power Research Institute,Jiangsu Electric Power Company,Nanjing,211103,China; 2. Key Laboratory of Electric Energy Metering,State Grid Corporation of China,Nanjing 210019,China） Abstract ： GIS has the characteristics of completely closed,which need more length test circuit,large impedance,more required equipment and difficult rise to rated current.As one part of the GIS,current transformer can’t be taken independently when it is on the spot inspection in Ultra-high voltage (UHV) power station.So it is important to select the appropriate testing circuit.Using reactive power compensation method can greatly reduce the capacity of up-flow device and power supply while selecting the appropriate method of reactive power compensation is the premise of measuring the parameters of the GIS primary circuit accurately.In this paper,the structure and feature of the current transformer in the GIS are studied, which are used to select a appropriate primary testing circuit of UHV GI