Modeling and Analysis for Practical CT Based on Transient Test and Parameter Identification

作     者：Xianggen Yin Zhe Zhang Xuanwei Qi Gan Li Wenbin Cao Qian Guo 

作者机构：State Key Laboratory of Advanced Electromagnetic Engineering and TechnologyHuazhong University of Science and TechnologyWuhan 430074China 

出 版 物：《CSEE Journal of Power and Energy Systems》 (中国电机工程学会电力与能源系统学报（英文）)

年 卷 期：2016年第2卷第4期

页      面：51-57页

核心收录：

学科分类：08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the Key project of smart grid technology and equipment of national key research and development plan of China under Grant 2016YFB0900600 

主　　题：Current transformer dynamic physical simulation tests J-A model parameter identification transient test 

摘      要：In the transient process of power grid faults,the transferring distortion of current transformer(CT)can seriously affect relay protection *** these conditions,it is difficult to analyze the ferromagnetic characteristic of the magnetizing branch in the transient equivalent circuit of *** Jiles-Atherton hysteresis model(J-A model),which is widely used in digital simulations,can accurately describe the hysteresis and saturation process of the core characteristics;however,to acquire the parameters of the J-A model of current transformers in practical use is still a challenging *** this paper,physical tests based on a practical CT and parameter identification are presented to solve the *** basic hysteresis loops of P,PR,and TPY class of practical current transformers are obtained through physical ***,the J-A model parameters are identified using a hybrid genetic/simulated annealing algorithm,based on which transient simulation models of different class CTs are *** effectiveness of the proposed method is verified via dynamic physical simulation tests.A typical accident is analyzed based on these models.