A Multi-Grid Collaborative Resilience Enhancement Method for Load Recovery Under Extreme Faults
In order to further enhance the resilience of the distribution network and improve the power supply reliability of the system,an optimal load recovery method for enhancing the resilience of active distribution networks is proposed to enhance the sustained power supply capacity of the distribution network during extreme faults.This method enhances the flexibility of the distribution network by dis-patching different local and external flexible resources in the active distribution network,and uses a hybrid nonlinear programming(MINLP)model to consider island mode,time series characteristics,and external microgrid connection to minimize network losses,load shedding rates,and scheduling costs.At the same time,in order to reduce the computational burden of the system,the nonlinear model is represented as a mixed integer second-order cone programming(MISOCP)model through convex relaxation,and optimization calcula-tions and solutions are performed.To verify the correctness and effectiveness of the proposed method,a case study is conducted on an IEEE 33 bus system integrated with microgrids.The simulation results show that the proposed method can effectively improve the recov-ery capacity of the power grid,improve the load recovery rate,and achieve optimal load recovery.
active distribution networkmicrogridisland zoningload recoveryresilience
万方数据
维普
