基于电子式互感器运行监控系统的误差特性研究

Research of error characteristics based on PEVT operation monitoring system

随着电力系统自动化程度越来越高,电子式互感器使用率也逐渐增多。但是电子式互感器本身不稳定及外界环境因素的影响会带来计量误差。文中主要研究内容是设计电子式互感器误差在线比对系统,其中包括一次系统、二次系统建立和在线比对软件联合调试及运行,以此系统研究各方面因素对互感器比差的影响。结果表明现场互感器在低温下误差变化较小,在高温时误差变化较大。该研究对电子式互感器技术的研究积累试验数据,为电子式互感器的技术发展提供有力支撑。

With the increasing degree of automation of the power system, the utilization rate of electronic transformer is also increasing. However, the instability of the electronic transformer and the influence of the external environmental factors will lead to the measurement error. This paper mainly researches on the design of on-line error comparison system of electronic transformer, including the establishment and on line software joint debugging and operation of primary system and secondary system, and this system is utilized to analyze the impact of various factors on the transformer error. The results show that the error of the electronic transformer is small at low temperature, and the error changes at high temperature. In this study, the research of electronic transformer technology is used to accumulate the experimental data, which provides a powerful support for the technical development of electronic transformer.