Mobile emergency generators based distribution grid resilience enhancement strategies under wildfire spreading
In recent years,the frequent occurrence of wildfires in China has seriously threatened the safe and stable operation of the power systems.As an important flexible scheduling resource,mobile emergency generators can guarantee the power supply of critical loads under the spread of wildfires and enhance the resilience of the distribu-tion network to cope with wildfire disasters.Hence,this paper proposes a resilience enhancement strategy for distri-bution network based on mobile emergency generators supply under wildfire spreading.First,a distribution line conductor heat model and heat balance equation based on the consideration of wildfire heat radiation are estab-lished,and clustering is applied to generate typical scenarios with uncertain parameters;then,with the optimiza-tion objectives of minimizing the power purchase cost of the distribution network,the load outage compensation cost,and the operation cost of the dispatchable resources,the distribution and operation constraints considering the distance traveled by the mobile emergency generators to the access point are proposed,and then the optimal alloca-tion of the mobile emergency generators is established in conjunction with a disaster whole process operation strategy model.Considering that the wildfire model is a nonlinear equation,a linearization method based on two-stage relax-ation is proposed to transform it into a mixed-integer linear programming problem for fast solution.Finally,the ef-fectiveness of the proposed method is verified by simulation using the IEEE 33-node test system.
mobile emergency generatorswildfire disasterdistribution networkresilienceoptimal configuration
万方数据
维普
