Operation Experience of Isolated Network in CSG during Ice Disaster (2008)

This paper summarizes operation experience of several isolated networks in CSG during ice disaster(2008) concerning performance of different types of generators,countermeasures of both power plants and the electric grid.Then it is proposed that the electric power grid should initiatively implement strategy for planed isolated operation when networks must be isolated,enhance load dispatching,ensure applicability of protective relayings and automation devices,while power plants are to switch to valve-operation-mode,increase amplitude limit of primary frequency regulation,adjust operation strategy of OPC,reasonably increase dead zone of primary frequency regulation,etc.