摘要
传统的直流高压发生器采用开放型结构,其体积和重量非常庞大,需要拆装分级运输,现场试验需要进行组装,耗时费力。而采用高频方式的高稳定度直流高压发生器虽然极大的减小了体积和重量,但目前尚难以实现1 200 kV的电压等级。文中采用了封闭式气体绝缘结构完成1 200 kV紧凑型直流高压发生器的设计和研制,包括电阻、均压硅堆等内部器件的优化设计、本体电场仿真分析等,整体尺寸降低30%,重量减小25%。同时,该装置采用卧式运输、立式使用的方案,提高了现场工作效率。依照国家标准进行研制气体绝缘直流高压发生器的第三方性能测试,并在山西晋中特高压变电站进行整支1 000 kV避雷器的0.75倍参考电压下泄漏电流的现场试验,均满足试验要求,有效地解决了超特高压避雷器整支试验难以开展现场试验的难题。
The traditional DC high voltage generator adopts open structure with large volume and weight,so it has to be disassembled for transportation and assembled for field test, leading to extra difficulty and time consumption. Although the high-stability DC high voltage generator with high frequency has much smaller volume and weight,it cannot achieve the voltage level of 1 200 kV at present. Therefore,this study adopted the closed gas insulation structure to design and develop a 1 200 kV compact DC high voltage generator,including optimization design of internal devices such as resistor and voltage-sharing silicon reactor,and electric field simulation of generator body. Its overall size was reduced by 30% and weight was reduced by 25%,compared with those of the traditional generator. The scheme of horizontal transportation and vertical use was adopted for the generator to greatly improve the efficiency of field operation. Third party testing for the DC high voltage generator was conducted in accordance with the national standards for gas insulation, and a leakage current test of the 1 000 kV arrester under 0.75 time of reference voltage was also conducted in Shanxi Jinzhong UHV substation. Both tests met the testing requirements. Therefore,the difficulty in conducting field test for whole UHV arrester is resolved successfully.
作者
张杰
聂德鑫
程林
吴维宁
ZHANG Jie;NIE Dexin;CHEN Lin;WU Weining(NARI Group Corporation (State Grid Eleetrie Power Research Institute),Nanjing 211106,China;Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute,Wuhan 430074,China)
出处
《高压电器》
CAS
CSCD
北大核心
2018年第6期38-45,共8页
High Voltage Apparatus
基金
国家电网公司总部科技项目(WNJ151-0008)~~
