特高压换流变阀侧绝缘性能试验成套设备研发

何长根 许广虎 张陵 金铭 吴标 姜杏辉

DOI：10.16660/j.cnki.1674-098x.2011-5640-0454

摘  要：針对昌吉换流站高端换流变阀外施交流耐压及局放试验的特点研发了一套特高压换流变阀侧绝缘性能试验设备，由高压谐振电抗器、交流分压器等组成。其中电抗器和分压器集成为单柱式共塔结构。通过仿真计算验证了该整套设备的稳定性和可靠性。同时基于装置参数选取的基础上开展了整套装置一体化、兼容性、无局放等优化结构设计。另外，自主研发了固定电感式分压测压系统和气囊式金属鳞片状均压罩。开展了4000m海拔，1500kV电压下共塔结构电场分布模拟计算。

关键词：特高压  共塔结构  4000m海拔  外施交流耐压及局放试验

中图分类号：TM862                           文献标识码：A                    文章编号：1674-098X（2021）01（c）-0020-04

Development of a Complete Set of Equipment for the Insulation Performance Test of the UHV Converter                               Transformer Valve Side

HE Changgen1  XU Guanghu2  ZHANG Ling1  JIN Ming2  WU Biao2  JIANG Xinghui3*

（1.State Grid Xinjiang Electric Power Co.， Ltd.， Urumqi， Xinjiang Uygur Autonomous Region， 830002 China;2. Electric Power Science Research Institute State Grid Xinjiang Electric Power Co.， Ltd. ， Urumqi， Xinjiang Uygur Autonomous Region， 830002 China;3.Huadian Electric Power Technology Research Institute Wenzheng college Suzhou University， Suzhou， Jiangsu Province，215104 China）

Abstract： Aiming at the characteristics of the external AC withstand voltage and partial discharge test of the high-end converter transformer valve of Changji converter station， a set of insulation performance test equipment on the side of the UHV converter transformer valve has been developed. It is composed of high voltage resonant reactor， AC voltage divider， etc. The reactor and the voltage divider are integrated into a single-column common tower structure.  The stability and reliability of the whole set of equipment are verified by simulation calculation.  At the same time， based on the selection of device parameters， the optimized structure design of the whole set of device integration， compatibility， and no partial discharge was carried out.  In addition， it has independently developed a fixed inductive partial pressure measuring system and an airbag-type metal scale pressure equalizing cover. A simulation calculation of the electric field distribution of a common tower structure at an altitude of 4000m and a voltage of 1500kV was carried out.

Key Words： UHV; Common tower structure; 4000m altitude; External AC withstand voltage and partial discharge test

随着我国特高压直流输电技术的快速发展，特高压直流工程在我国能源资源优化配置上发挥了日益重要的作用。换流变压器在高压直流输电（HVDC）中起着重要作用，它的安全运行对整个系统可以连续，可靠和稳定地工作这一事实具有重大影响[1]。因此，迫切需要在现场交接试验阶段进行阀侧外施耐压及局放测量试验。

针对特高压换流变的性能参数和现场环境条件，研制适用于狭小空间和复杂电磁环境下的紧凑型、高电压、无局放的阀外施成套试验装置是成功开展该试验的关键。特高压换流变的现场阀侧交流耐压试验在国内和国际上都是首次应用，其示范意义重大，同时本研究成果可反哺换流变现场试验装置的设计和研制。……