基于COMSOL多物理场的冲击电压下变压器绝缘油中流注放电的仿真研究  

Simulation Study on Streamer Discharge in Transformer Insulating Oil under Impulse Voltage Based on COMSOL Multiphysics Field

作　　者：王波 胡畔 李楚 蔡钰泽 WANG Bo;HU Pan;LI Chu;CAI Yuze(College of Electrical Engineering and New Energy,China Three Gorges University,Yichang Hubei 443002,China;Electric Power Research Institute,State Grid Hubei Electric Power Co.,Ltd.,Wuhan Hubei 430077,China)

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002 [2]国网湖北省电力有限公司电力科学研究院,湖北武汉430077

出　　处：《湖北电力》2024年第1期65-74,共10页Hubei Electric Power

基　　金：国家自然科学基金项目(项目编号:52077120)。

摘　　要：随着超高压、特高压设备和输电系统的发展,矿物油以其优异的介电性能、老化稳定性和安全性能被广泛应用于电气设备的绝缘中。模拟了流注放电在油中的传播过程,分析了电场强度和空间电荷变化的结果,研究了不同外加电压和不同针-球间距下变压器放电模型的模拟结果,比较了不同条件下流注放电过程的特点和发展,最后确定了不同因素对流注放电形成和发展的影响。With the development of UHV and EHV equipment and power transmission system,mineral oil has been widely used in the insulation of electrical equipment for its excellent dielectric properties,aging stability and safety performance.This paper simulates the propagation process of streamer discharge in oil,analyzes the results of variation of electric field intensity and space charge,then studies the simulation results of transformer discharge model under different applied voltage and different needle-ball spacing,compares the characteristics and development of the streamer discharge process under different conditions,and finally determines the influence of different factors on the formation and development of streamer discharge.

关 键 词：超高压 特高压设备 放电仿真 空间电荷 变压器绝缘油 电场强度 矿物油 流注放电 

分 类 号：TM83[电气工程—高电压与绝缘技术]