Research Of Regional Power Grid Accident Operation Mode Recovery Strategy

With the growing scale of regional power grid, grid accident will results in more serious impact, fault recovery has attracted increasing attention, This article focuses on the power grid recovery strategy under the accident operation mode, focus on the grid after the accident, can give the measures to eliminate the flow exceeding limit, and can give the power recovery scheme for the loss load, and some flow constraints and dispatch operation regulations are required to meet. As for the power loss isolated island, this article adopts the strategy of"electric island + edge conditions"power supply path search, this strategy considers the power grid consists of electric island and edge conditions, by searching the other side electric island charged status of edge conditions, can quickly make out the power supply recovery path. As for power flow exceeding limit, this article adopts"parallel paths+ load transferring + load shedding"three stategies of flow exceeding limit, the measures given goes through the electric magnetic loop network check and flow check, through up and down stream flow exceeding devices analysis and combing, can eliminate the flow exceeding with less breaker operations. With isolated island recovery and flow exceeding process program, can provide a sequence of breaker operation steps for regional power grid, at last this article studies and develops the accident recovery operation tickets, and designs operation rules library and anti-error rules library, can strictly check the operation items for security sake, throgh man and computer combing decision and anti-error rules check, can substantially reduce the burden of dispatching workers, and reduce the possibility of error operations. the strategies studied and programes developed can provide dispatch workers an assistant decision function for accident recovery, and can be used to make out accident plan.