3000kV/300kJ车载式冲击电压发生器的设计研究  

Design of 3000 kV/300 kJ vehicle-mounted impulse voltage generator

作　　者：张杰[1,2] 聂德鑫 杨冬阳[3] 刘思逸 姜宇航 Zhang Jie;Nie Dexin;Yang Dongyang;Liu Siyi;Jiang Yuhang(Wuhan Nari Co.,Ltd.,State Grid Electric Power Research Institute,Wuhan 430074,China;NARI Group Co.,Ltd.,Nanjing 211000,China;Key Laboratory of Control of Power Transmission and Conversion,Shanghai Jiao Tong University,Shanghai 200030,China)

机构地区：[1]国网电力科学研究院武汉南瑞有限责任公司,武汉430074 [2]南瑞集团有限公司,南京211000 [3]上海交通大学电力传输与功率变换控制教育部重点实验室,上海200030

出　　处：《电测与仪表》2020年第14期142-147,152,共7页Electrical Measurement & Instrumentation

基　　金：国家电网有限公司总部科技项目资助(524625170012)。

摘　　要：随着高电压等级现场冲击试验和绝缘试验要求的不断提高,对高输出能力、机动灵活的冲击电压发生器需求日益强烈。为此,研制了一台采用主体结构一体化设计的3000 kV/300 kJ车载式冲击电压发生器,计算了此型式冲击电压发生器的机械和电气特性,分析了其关键部位的力学承载裕度和电场峰值位置,开展了十项型式试验进行论证校验。研究得到,所研制发生器的本体的支柱筒端部挠度为75 mm,弯曲应力为8.3 MPa,安全裕度达7.2倍,两侧液压缸出力为38.6 WN,安全裕度达1.3倍;其表面场强峰值为20.4 kV/cm,位于连接脉冲电容与电阻的金属法兰处,不会发生局部放电现象。该冲击电压发生器实现了卧式运输、立式使用,设备材料与结构设计能够满足机械和电气要求。With the requirements of high voltage field tests and insulation field tests,there is an increasing demand for the impulse voltage generators with high output capability and flexible characteristic.Therefore,this paper designs a 3000 kV/300 kJ vehicle-mounted impulse voltage generator,which adopts the integrated design for the main structure.The mechanical and electrical characteristics of this impulse voltage generator are calculated.The mechanical bearing margin and electric field peak position are calculated to validate the design of the key parts.Ten types of tests are carried out to demonstrate the verification.The research results show that,the deflection at the end of the supporting tube is 75 mm,the bending stress is 8.3 MPa,of which the safety margin is 7.2 times.The output of the hydraulic cylinder on both sides is 38.6 WN,of which the safety margin is 1.3 times.The surface field strength peak is 20.4 kV/cm and locates at the metal flange connection of the pulse capacitor and resistor,which will not result in the partial discharge phenomenon.The impulse voltage generator can be transported horizontally and operated vertically.The material and structure design of the equipment can meet both the mechanical and electrical requirements.

关 键 词：车载式 冲击电压发生器 一体化设计 机械强度 电场分布 

分 类 号：TM933[电气工程—电力电子与电力传动]