电子式电流互感器的误差分析与在线试验研究

Error Analysis and Online Experimental Research of Electronic Current Transformer

为获得电子式互感器在长期运行过程中的误差与部分影响参量的关系和规律,建立了电子式互感器运行特性在线实验平台。在分析电子式电流互感器误差来源的基础上,在东山变电站对挂网运行的电子式互感器进行试验。通过对试验数据进行研究,得到了电子式电流互感器误差受温度、负荷变化的影响规律及长期运行过程中的稳定性,为准确评估电子式电流互感器的稳定性和可靠性提供了重要支撑。

In order to get the relationship between the error of electronic current transformer and the impact parameters in long running process,the research platform was established about electronic transformer’s operational characteristics. Based on the analysis of electronic current transformer’s error source,the electronic current transformer running was tested in the Dongshan station. By analyzing the experimental data,it has been gotten that the impacts of temperature and load change on the error of electronic current transformer and the stability and consistency of electronic current transformer in the long run. And it provides important support to assess the stability and reliability of electronic current transformer accurately.