Modeling and simulation of air-gapped current transformer based on Preisach Theory  

作　　者：Ya Hui Wu Xin Zhou Dong Sohrab Mirsaeidi 

机构地区：[1]State Key Laboratory of Control and Simulation of Power Systems and Generation Equipment,Department of Electrical Engineering,Tsinghua University,Beijing 100084,China

出　　处：《Protection and Control of Modern Power Systems》2017年第1期111-121,共11页现代电力系统保护与控制（英文）

基　　金：the National Natural Science Foundation of China(Grant No.51120175001);Science and Technology Project of State Grid Corporation of China(GWKJ2013-005).

摘　　要：Current Transformer(CT)modeling,by which CT’s characteristics can be studied has a significant importance in CT selection and design.In spite of numerous studies about closed-core CT model,only a few works have been conducted on air-gapped ones with the following problems:models of which required data is easily-accessible,have poor simulations of magnetization process;on the contrary,models which have satisfactory simulations,are hard to be established because of the hard-to-get required data.Therefore,based on Preisach Theory,a novel air-gapped CT model is deduced from the closed core CT model.The proposed model is accurate and can be established easily.The saturation and remanence properties of closed-core CT and air-gapped CT are simulated and compared.

关 键 词：CT modeling Air gap Preisach Theory SATURATION REMANENCE 

分 类 号：TM4[电气工程—电器]