摘要
为向后续750 kV超高压工程建设和百万伏级特高压工程建设提供参考和借鉴,有必要对750 kV示范工程建设经验进行总结和分析。简述了国家电网公司750 kV输变电示范工程小系统试验中的零起升流和零起升压试验及结果,对750 kV官亭站和兰州东站主变零起升流试验和零起升压试验结果进行了分析,内容包括:750 kV主变短路阻抗,主变空载伏安特性,氧化锌避雷器泄漏电流和750 kV高抗伏安特性测试以及试验过程中二次回路校核,并与设计值进行了对比,给出了试验结论。
Building China northwest 750 kV transmission ＆ distribution project offers valuable experience for the extending 750 kV and incoming 1 000 kV transmission projects. This paper briefly introduces current rising test and voltage rising test in the small system test of the project, and provides the test results. It analyzes the results of the tests taken on the 750 kV power transformers respectively in Guanting and Lanzhoudong connected with Gongboxia Hydropower Station, covering the 750 kV transformer short circuit impedance; the 750 kV transformer unload voltage-ampere performance, ZnO arrester leakage current, the 750 kV shunt reactor voltage-ampere performance and verification of the secondary circuit during system commissioning test. Conclusions are given to the test based upon comparison with the design specification of the project.
关键词
750
KV示范工程
小系统试验
试验结果分析
电力系统
750 kV transmission ＆ distribution project
small system commissioning test
test results analysis
power system
