A search method for controlled islanding surface considering the stability of isolated net-work with new energy sources
Controlled islanding is an important measure to ensure the stability of power system and avoid large-scale power outages.However,the traditional researches method that regard the splitting surface determination as a single objective optimization problem neglect the stability of isolated subsystem.Therefore,a control islanding strategy considering the stability of subsystem with new energy is proposed in this paper.Firstly,the initial islanding surface with the minimum power-flow disruption is obtained based on the electrical connections and power flow distribution between nodes.Then considering the electrical coupling connectivity of key nodes and the penetration of new energy,the final islanding surface is searched in the neighborhood search space of the initial solution,to improve the stability of the isolated network subsystem after splitting.Finally,the proposed method is analyzed based on the New England 39-bus system,and the simulation results validate the effectiveness and advancement of the method.
controlled islandingislanding surface searchnew energystability of isolated subsystem
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