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

作     者：Ya Hui Wu Xin Zhou Dong Sohrab Mirsaeidi 

作者机构：State Key Laboratory of Control and Simulation of Power Systems and Generation EquipmentDepartment of Electrical EngineeringTsinghua UniversityBeijing 100084China 

出 版 物：《Protection and Control of Modern Power Systems》 (现代电力系统保护与控制（英文）)

年 卷 期：2017年第2卷第1期

页      面：111-121页

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 

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

主　　题：CT modeling Air gap Preisach Theory Saturation Remanence 

摘      要：Current Transformer(CT)modeling,by which CT’s characteristics can be studied has a significant importance in CT selection and *** 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 ***,based on Preisach Theory,a novel air-gapped CT model is deduced from the closed core CT *** proposed model is accurate and can be established *** saturation and remanence properties of closed-core CT and air-gapped CT are simulated and compared.