特高压交直流投产后山西电网短路电流分析及抑制措施研究

Short Circuit Current Analysis and Suppression Measures for Shanxi Power Grid after UHV AC and DC Projects Being Put into Operation

随着山西电网的快速发展,特高压交直流工程的逐步投产使得电网联系愈加紧密,电网容量不断增大,短路电流水平不断提高,导致多个站点出现超标的情况,对电网的安全稳定运行造成不利影响。结合山西电网发展规划,对2017年目标网架的短路电流进行仿真计算,对短路电流超标的站点进行研究分析并提出了可行的抑制措施。

With the rapid development of Shanxi power grid and UHV AC and DC projects being put into operation,the total capacity of power grid is increasing.Because the short-circuit current level is getting larger,the allowed value of some power stations exceeded the limits,which has threatened the safe and stable operation of power grid.This paper focuses on short-circuit current simulation calculation according to grid plans in 2017,then feasible suppression measures are put forward for the stations with the current out of limits.