山东电网500kV规划主网架优化方案的研究

Study on Optimizing 500kV Main Network for Shandong Grid Planning

"十二五"期间,随着山东500kV电网的不断发展完善以及特高压变电站接入山东电网负荷中心,山东500kV系统短路水平将进一步增高;部分变电站500kV母线短路电流超过设备额定遮断容量(50kA),在保证主网架安全可靠运行前提下,对500kV网络进行优化,控制局部500kV变电站的短路水平,是本次研究需要解决的重要问题。

During the next National Twelfth Five-Year Plan period,500kV power grid of shandong province will continuously develop and perfect as well as UHV substation will be built into power grid load center,therefore,500kV system short-circuit current level increased gradually and short-circuit current of 500kV bus in parts of substations exceed rated blocking capacity of circuit breaker.In precondition of guaranteeing the safe and reliable operation of electric wire netting,limitation on short-circuit current level of parts of 500kV substations is important problem to solve in this Study,optimized scheme for Shandong planning Main Network is suggested.