高压电器2018，Vol.54Issue(1)：1-8,8.DOI:10.13296/j.1001-1609.hva.2018.01.001
交流高压金属化膜电容器温升特性和优化设计
Temperature Rise Characteristic and Design Optimization of AC High Voltage Metallized Film Capacitor
摘要
Abstract
Metallized film capacitors (MFC) own characteristics of self-healing and can be used in high electric field strength applications.Also,MFC has high working reliability and high power density.Currently,MFC has been widely used in low voltage AC/DC filtering and pulse discharge applications.However,the application in high voltage AC filtering is rarely reported.The metallized film capacitor investigated in this paper is used for reactive power compensation.High temperature has an adverse effect on the working stability and lifetime of metallized film capacitor,so it is necessary to investigate the temperature rise characteristic and optimization measures.This paper analyzed the heat transfer process inside the capacitor and calculated the heat power and heat dissipation of the capacitor.A simulation model is built with reasonable simplification,and the temperature rise of the capacitor when AC current flow through is calculated.The simulation result is verified by test result.On the basis,the structure and parameters are chosen by optimized design.The investigation indicate that in a proper selection range,MFC designed based on thicker film,smaller film width and element scooping facing the main face of the shell will reduce the temperature rise in MFC.关键词
金属化膜电容器/温升/优化设计Key words
metallized film capacitor/temperature rise/design optimization引用本文复制引用
李化,陈麒任,李浩原,姜浩宇,李立威,李露,严飞..交流高压金属化膜电容器温升特性和优化设计[J].高压电器,2018,54(1):1-8,8.基金项目
国家电网科技项目(GY71-17-010).Project Supported by Program of Science and Technology of SGCC(GY71-17-010). （GY71-17-010）
