变压器长期直流偏磁运行对垫块偏移及抗短路能力的影响  

Influence of Long-Term DC Magnetic Bias Operation on Cushion Offset and Anti-Short Circuit Ability of Transformer

作　　者：时胜寒 李晓华 褚福源 李俊聪 暴家良 SHI Sheng-han;LI Xiao-hua;CHU Fu-yuan;LI Jun-cong;BAO Jia-liang(School of Electrical Engineering,Shanghai University of Electric Power,Shanghai 200090,China)

机构地区：[1]上海电力大学电气工程学院,上海200090

出　　处：《变压器》2021年第8期24-29,共6页Transformer

基　　金：上海绿色能源并网工程技术研究中心项目(13DZ2251900)。

摘　　要：分析了变压器在直流偏磁下振动的偏置特性,提出了一种研究长时间直流偏磁下垫块偏移的建模方法,获得变压器长期直流偏磁运行情况下的垫块的偏移特性曲线,并研究了此时变压器抗短路能力性能。The vibration bias characteristics of transformer under DC magnetic bias are analyzed theoretically,and a modeling method is proposed to study the migration of cushion block under DC magnetic bias for a long time.The migration characteristic curve of cushion block under DC magnetic bias operation for a long time is obtained and the anti-short-circuit performance of transformer is studied.

关 键 词：电力变压器 垫块 直流偏磁 抗短路能力 

分 类 号：TM401.2[电气工程—电器]