用于气体绝缘开关的新型空心线圈电流互感器  

RESEARCH ON A NOVEL AIR-CORE COIL CURRENT TRANSFORMER FOR GIS

作　　者：罗苏南[1] 赵希才[1] 田朝勃[2] 杨奖利[2] 

机构地区：[1]南瑞继保电气有限公司,江苏省南京市211100 [2]西安西开高压电气股份有限公司,陕西省西安市710077

出　　处：《电力系统自动化》2003年第21期82-85,共4页Automation of Electric Power Systems

基　　金：国家电力公司科技项目 (SP11 2 0 0 1 0 1 13 0 1)

摘　　要：新型空心线圈电流互感器具有无磁饱和及动态范围宽等优点 ,与传统的电流互感器相比有着明显的优势。文中介绍了一种可用于 2 2 0kV气体绝缘开关 (GIS)的新型空心线圈电流互感器 ,互感器以Rogowski线圈为传感头 ,以FPGA为核心构成数字变换器 ,采用数字积分技术还原被测电流波形。文中给出了空心线圈电流互感器的原理、结构及实验结果。温度及电磁兼容等试验表明 ,该互感器性能稳定 ,满足电子式电流互感器标准(IEC 60 0 4 4 8)精度 (0 .2级 )A novel air-core coil current transformer has some good performances such as no magnetic saturation and wide dynamic range, in which it shows an obvious advantage over conventional CTs in relay protection and measurement. The air-core coil current transformer used in 220kV GIS (gas insulation switch) has been developed. It is composed of a Rogowski coil and a digital transducer. The latter uses a FPGA as its core element, and adopts a digital integrator to produce the original wave of the measured current. Furthermore, the principle, the structure and test results of the transformer are presented. The test results show that the measurement accuracy of the developed transformer can reach class 0.2, which satisfies the criterion of IEC60044-8.

关 键 词：电流互感器 ROGOWSKI线圈 气体绝缘开关 FPGA 数字积分 

分 类 号：TM452[电气工程—电器]