电机与控制应用2024，Vol.51Issue(5)：90-99,10.DOI:10.12177/emca.2024.031
气泡放电对变压器油流注放电的影响
Effect of Bubble Discharge on Transformer Oil Streamer Discharge
摘要
Abstract
Based on fluid dynamics,a simulation model of transformer oil containing bubbles streamer discharge under the action of impulse voltage is established.The variation laws of electric field intensity and space charge density of transformer oil containing bubbles are studied by changing the position,size and number of bubbles.The simulation results show that when the breakdown voltage reaches a certain value,an electric field gradient is formed inside the bubble due to the accumulation of gas inside the bubble,resulting in an internal discharge phenomenon.The closer the bubble is to the high-voltage electrode the faster it is broken down,and the discharge proceeds in a relatively shorter time.The larger the size of the bubble,the slower the transformer oil streamer discharge.And the more the number of bubbles,the more intense the electric field during the streamer discharge,the longer the discharge lasts,and the greater the damage caused to the transformer.关键词
气泡/变压器油/流注放电/电场/空间电荷Key words
bubble/transformer oil/streamer discharge/electric field/space charge分类
信息技术与安全科学引用本文复制引用
刘波洋,蔡新景..气泡放电对变压器油流注放电的影响[J].电机与控制应用,2024,51(5):90-99,10.基金项目
辽宁省自然科学基金(2020-MS-214)Natural Science Foundation of Liaoning Province,China(2020-MS-214) （2020-MS-214）
