广州220 kV电网典型网架结构选择初步探讨

摘要

In order to promote inter-regional electric power exchange capacity of Guangzhou power grid and ability to resist risks,this paper presents a kind of 220 kV ring network and chain structure for the power grid under the shaking hand run-ning mode of two 550 kV substations by combining status quo of Guangzhou 220 kV power grid structure. In aspects of pow-er supply capacity,power supply reliability,short-circuit current level and simplicity of operation,it compares structures of self-healing ring network,double end chain network and ring network with chain structure. It suggests applicable environ-ment for structures of these three power grid and proposes initial suggestions to select typical grid structure for the future Guangzhou 220 kV power grid.%为提升广州电网区域间电力互供能力和抵御风险能力，结合广州220 kV电网结构现状，提出2座500 kV变电站拉手运行模式下的220 kV环网+链式电网结构。从供电能力、供电可靠性、短路电流水平、运行简便性等方面对自愈式环网、双端链式、环网+链式电网结构进行比较，给出3种电网结构的适用环境，并对未来广州220 kV电网典型网架结构的选择提出初步建议。