电流互感器磁饱和特性对继电保护的影响实例及防范措施  

Examples of Influence of Magnetic Saturation Characteristics of Current Transformer on Relay Protection and Preventive Measures

作　　者：陈国炜 王丽[2] CHEN Guowei;WANG Li(Guodian Nari Nanjing Control System Co.,Ltd.,Nanjing 211106,China;Guodian Nari Technology Co.,Ltd.,Nanjing 211106,China)

机构地区：[1]国电南瑞南京控制系统有限公司,江苏南京211106 [2]国电南瑞科技股份有限公司,江苏南京211106

出　　处：《通信电源技术》2022年第6期141-143,共3页Telecom Power Technology

摘　　要：就国内目前对电流互感器的研究来看,很少以分析其磁饱和特性为主,相关研究中关于其对继电保护的影响较少,并未提出有效防范措施(Current Transformer,CT)。将理论与实践相结合,以继电保护装置为依据,作为当下供电系统中的重要组成,研究通过介绍电流互感器来体现其应用的价值与意义。对于电力应用来说,要想能够保持稳定、安全,就要大大提升电力系统各方面的性能,而继电保护装置就是确保其供电稳定性与安全性的重要设备。通过运用电流互感器的供电系统来看,其特性会对继电保护造成一定程度的影响,从而使得供电系统的稳定性无法得到有效保障。为体现出研究的真实有效性,将以某电厂供电系统为实例来进行分析。In terms of the current domestic research on Current Transformer(CT),it is rarely based on the analysis of its magnetic saturation characteristics.In the relevant research,it has less impact on relay protection,and in order to put forward effective preventive measures,this research analyzes this problem,so as to show the innovation of this research.Combined with theory and practice,based on relay protection device,as an important part of current power supply system,the research reflects the value and significance of its application by introducing current transformer.For power applications,in order to maintain stability and safety,it is necessary to greatly improve the performance of all aspects of the power system,and the relay protection device is an important equipment to ensure its power supply stability and safety.From the perspective of the power supply system using current transformer,its characteristics will have a certain impact on relay protection,so that the stability of the power supply system can not be effectively guaranteed.In order to reflect the authenticity and effectiveness of the research,this paper will take the power supply system of a power plant as an example.

关 键 词：电流互感器 磁饱和 继电保护 

分 类 号：TM7[电气工程—电力系统及自动化]