Real-time Optimal Dispatching Strategy for Improving Power Grid Resilience Under Typhoon Disaster
In view of the power grid blackout accident that may be caused by the outage of transmission lines under the typhoon disaster,a real-time optimal dispatching strategy to improve the resilience of the power grid is constructed.The relationship between wind speed and line fault rate is described by using the vulnerability curve,and the impact of line load rate on line fault is considered to obtain the transmission line fault probability under typhoon disaster;The fault scenario set is generated by Monte Carlo sampling,and the scenario reduction is performed by using the confidence set method;On this basis,a multi-objective real-time optimal dispatching model considering the power flow uniformity,the line load rate in the disaster area and the cost of power generation is built,and the optimal transmission switching(OTS)is introduced into the model to reduce the number of lines affected by typhoon disasters.In order to improve the calculation speed of the optimal scheduling model,Benders decomposition method is used to solve the problem.An IEEE 118-bus system is simulated to verify the effectiveness of the proposed method.
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