黑龙江省电网中东部断面500kV/220kV电磁环网解环研究

Study on uncoupling 500 kV/220 kV electromagnetic loop network in the middle and eastern section of Heilongjiang power grid

通过对黑龙江省中东部断面500 k V/220 k V电磁环网情况进行分析,提出中东部电网哈佳、哈牡联络断面500 k V/220 k V电磁环网解环方案。分析了电磁环网解环对于全省500 k V变电站短路电流的影响,最后对解环后的中东部地区电网进行了安全稳定分析计算,保证电磁环网解环后电网的安全稳定运行。

Firstly,the scheme to uncouple500kV/220kV electromagnetic loop network in Harbin-Jiamusi and Harbin-Mudanjiang City sections is presented,based on the analysis on the500kV/220kV electromagnetic loop network in the middle and eastern section of Heilongjiang.Moreover,the influence of uncoupling electromagnetic loop on short-circuit current of500kV substation is analyzed.Finally,security and stability analysis calculations in middle and eastern grids are carried out after uncoupling electromagnetic loop,which enables the power network safely and stably operate.