电子式互感器积分方案的比较研究  

A comparative study of integral methods in electronic instrument transformer

作　　者：郭乐[1] 申狄秋[2] 卢家力[1] 

机构地区：[1]国电南京自动化股份有限公司,江苏南京211100 [2]中国南方电网超高压输电公司柳州局,广西柳州545006

出　　处：《电力系统保护与控制》2010年第18期111-114,共4页Power System Protection and Control

摘　　要：基于罗科夫斯基线圈原理的电子式电流互感器得到了广泛的认可和应用,但是罗氏线圈输出需经积分处理,方能获得被测信号。针对积分还原过程进行了深入的研究,提出了硬件积分、软件积分两种方案。从原理上给出了各自的传递函数,并对幅频特性、相频特性分别进行了分析;结合具体实现形式,对两种方案的优、缺点分别加以阐述;结合实际的工程应用波形,提出了软件积分方案更适合工程化应用的观点。Electronic current transformer, which is based on the principle of Rogowski coil, has been extensively accepted and applied in power system. However, due to technical maturity and outstanding merits, the Rogowski coil output must be integral before it is used. In this paper, the principles of analog and software integrator are analyzed. Firstly, transfer functions based on their principle are given, and the amplitude-frequency characteristics and phase-frequency characteristics are analyzed. Secondly, the advantages and disadvantages oftbe two schemes are elaborated. Finally, combining with the actual waveforms in project application, this paper draws a conclusion that software integrator is more suitable in actual projects.

关 键 词：电子式互感器 罗氏线圈 模拟积分器 软件积分器 积分比较 

分 类 号：TM452.94[电气工程—电器]