摘要
昌吉换流站和古泉换流站是±1100 kV昌吉—古泉特高压直流输电工程枢纽,一旦发生雷击损坏事故,可能造成大面积停电,影响十分严重。首先给出了换流站直流侧雷电侵入波过电压的计算方法,然后利用电磁暂态计算程序(EMTP),对±1100 kV昌吉换流站和古泉换流站直流侧设备的雷电侵入波过电压进行了仿真计算。给出了典型运行方式下,换流站进线段遭受反击和绕击时,换流站直流设备上的雷电侵入波过电压,确定了换流站直流侧避雷器的配置方案,并校核了换流站直流侧设备的雷电冲击绝缘水平。研究成果对保障±1100 kV昌吉—古泉特高压直流输电工程的防雷安全具有重要意义,对后续工程亦具有参考价值。
Changji converter station and Guquan converter station are key of the ±1100 kV Changji-Guquan UHVDC power transmission project. Once a lightning damage accident occurs, it may cause a large area blackout, which is very serious. Firstly, the calculation method of lightning intruding overvoltage on DC side of converter station was given. Then the electromagnetic transient calculation program(EMTP) was used to simulate the lightning intruding overvoltage on the DC side equipments in the ±1100 kV Changji converter station and Guquan converter station. In this paper, the lightning intruding overvoltage on DC equipments of converter station was given under typical operation mode when the input line of converter station was exposed to back flashover and shielding failure. The configuration of lightning arrester on DC side of converter station was determined. The lightning impulse insulation levels of DC side equipments in converter station were checked. The research results are of great significance for the lightning protection in the ±1100 kV Changji-Guquan UHVDC transmission project, and also of reference value to the follow-up projects.
出处
《全球能源互联网》
2018年第4期521-525,共5页
Journal of Global Energy Interconnection
基金
国家重点研发计划"±1100千伏直流工程过电压抑制与绝缘配合及雷电防护技术研究"(2016YFB0900801)
国家电网公司科技项目"±1100 kV以上电压等级直流输电技术前期研究"(GYB17201600174)~~
