摘要
同步调相机对特高压直流电网的安全稳定运行起着不可或缺的作用。结合调相机调试过程中励磁变压器保护误动情况,详细分析了调相机在启动过程中励磁系统产生谐波机理、励磁变压器产生励磁涌流的过程和原因,同时还分析了某厂家针对调相机启机过程研发的励磁变压器启动差动保护和常见差动保护的区别,从而得出励磁变压器差动保护能够保证调相机正常运行,励磁变压器启机差动保护无需投入的结论。
The synchronous condenser plays an indispensable role in the safe and stable operation of the HVDC. In combination with synchronous condenser’s fault tripping during the debugging process, harmonic mechanism of the excitation system, the reason of magnetizing inrush current during the start-up of the synchronous condenser analyzes in details. Apart from this, the differences of the excitation transformer’s current differential protection during start-up and conventional is also analyzed in this paper. The conclusion has guiding significance for practical engineering.
作者
王利超
肖仕武
南东亮
王廷旺
于永军
WANG Lichao;XIAO Shiwu;NAN Dongliang;WANG Tingwang;YU Yongjun(State Grid XinJiang Electric Power Co.,Ltd.Research Insstitute,Urumqi 830011,China;State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(North China Electrical Power University),Beijing 102206,China)
出处
《河北电力技术》
2021年第2期39-43,共5页
Hebei Electric Power
关键词
同步调相机
励磁变压器
谐波
励磁涌流
保护误动
synchronous condenser
excitation transformer
harmonic
excitation inrush current
protection misoperation
