电子式互感器电磁兼容试验研究

Experimental Study on Electromagnetic Compatibility of Electronic Transformer

电子式互感器是智能变电站建设的关键设备,但由于电子式互感器内含有电子元器件,安装在一次设备中面临现场强电磁干扰,通过现行国家标准电磁兼容试验的电子式互感器依然不能满足现场安全运行要求。本文分析了变电站的电磁环境、电子式互感器的结构和电磁干扰传播途径,提出应尽快开展变电站电子式互感器暂态电磁环境现场实测,建立基础数据,为电子式互感器试验标准和安全防护提供量化依据。

Electronic transformer is the key equipment for smart substation.Because of the influence of significant electromagnetic interference caused by high voltage equipments on the huge amount of electronic components in preliminary main equipment,the electronic transformer meeting the national standard for electromagnetic compatibility experiment can not ensure the field operation security of these components.The paper analyzes the electromagnetic environment in substation,the structure of the electronic transformer and the transmission route of electromagnetic interference,and puts forward that the electromagnetic environment field experiment for the transient of the electronic transformers should be implemented to gain basic data and provide the basis for the institution of experimental standard and the quantification of safety protection.