特高压变压器油箱防爆措施及改进研究  

Study on Explosion Proof Measures and Improvements for the UHV Transformer Tank

作　　者：卢理成 董弘川 LU Licheng;DONG Hongchuan(State Grid Smart Grid Research Institute Co.,Ltd.,Changping District,Beijing 102209,China;State Grid Economic and Technological Research Institute Co.,Ltd.,Changping District,Beijing 102209,China)

机构地区：[1]国网智能电网研究院有限公司,北京市昌平区102209 [2]国网经济技术研究院有限公司,北京市昌平区102209

出　　处：《全球能源互联网》2023年第1期64-70,共7页Journal of Global Energy Interconnection

基　　金：国家电网有限公司科技项目(SGFJJX00GYJS2100017)。

摘　　要：特高压变压器发生内部故障时如压力不能及时泄放,极易造成油箱变形甚至爆裂,进而导致燃爆事件。分析了变压器常用的防爆保护装置及其优缺点,提出了一种基于爆破片的新型压力泄放装置,并通过真型燃爆试验和动态等效试验对爆破片型压力泄放装置的有效性进行了验证。试验结果表明:在变压器内部高燃爆能量电弧故障下,爆破片型压力泄放装置动作速度和泄放效率均优于压力释放阀,可有效避免变压器燃爆事故。In case of internal failure of UHV transformer,if the pressure cannot be released in time,it is very easy to cause deformation or even burst of oil tank,which will lead to combustion and explosion events.This paper introduces the commonly used explosion-proof protection devices for transformers and their advantages and disadvantages,and puts forward a new type of pressure relief device based on bursting disc.The effectiveness of the bursting disc pressure relief device is verified by the real combustion and explosion test and dynamic equivalent test.The test results show that under the arc fault with high explosion energy inside the transformer,the action speed and discharge efficiency of the bursting disc pressure relief device are better than that of the pressure relief valve,which can effectively avoid the explosion accident of the transformer.

关 键 词：变压器 防爆 压力释放阀 爆破片 真型试验 

分 类 号：TM41[电气工程—电器]