Study of the electrical performance of eco-friendly equipment in a distribution transformer area

It has been a popular topic recently that eco-friendly materials， in place of any other kinds， are used as insulation media for power equipment. So far， the relevant research mostly focuses on the performance optimization of eco-friendly insulating materials. However， little attention is paid to whether or not it can be applied to power distribution equipment. Therefore， performance differences between key equipment in transformation areas for which eco-friendly and traditional insulation media are used respectively. Then， eco-friendly insulation media are used to manufacture distribution transformers， switching cabinets， and power cables， and the electrical performance of the media is evaluated. Finally， a distribution transformer area based on eco-friendly power equipment is constructed. The results show that the eco-friendly power equipment prepared by using vegetable insulating oil， gas mixture C4F7N/CO2 （perfluoroisobutyronitrile/carbon dioxide）， and cable insulation material polypropylene is similar in performance to traditional equipment； it can meet the application demands of power equipment on distribution networks. The results also verify the practicability of power equipment made from eco-friendly insulating media and the compatibility between various equipment， which can provide a reference for implementing and promoting eco-friendly distribution networks in China.