Study On Method Of Active Distribution Network Fault Recovery In Longyao County Considering Demand Side Management

As an important integrated platform and effective management approach for distributed generation and demand side management(DSM)resources,active distribution network(ADN)has become a frontier of intelligent distribution network.As the key technology of ADN,ADN fault recovery has been related to the power supply reliability of system operation,and has become an important research topic.During the active distribution network fault recovery,the demand side management resources on the load side can provide power support for the system,reduce load loss and improve the reliability of distribution network power supply.In this paper,firstly,for the problem of ADN fault recovery,considering the demand side management resources signed between distribution network operators and users,the ADN fault recovery model was established based on the master-slave game theory.Among them,the main game model takes the ADN demand side management scheme and optimized operation plan adjustment as the game strategy,takes the minimum comprehensive operation cost during the fault period as the game payment and consider necessary constraints to establish;while the slave game model takes the switch state set scheme during the fault period as game strategy,and takes the maximum comprehensive satisfaction index of ADN fault recovery as the game payment,at the same time necessary constraints were considered.The basic universal gravitation algorithm was improved by introducing elite strategy of population,adaptive inertia weight coefficient of position iteration and chaos search of global optimal celestial body.The main game model and the slave game model were designed based on the improved gravity algorithm.Finally,according to the example of distribution network structure fault recovery in the northwest area of Longyao County,two different forms of branch permanent fault recovery scheme and demand side management scheme were formulated,and the fault recovery indexes were compared by excluding demand side management and taking demand side management into account.The simulation results show that considering the support of DSM in ADN can reduce the load loss and improve the satisfaction index of fault recovery.At the same time,the improved universal gravitation algorithm has better solution performance than the traditional universal gravitation algorithm in application and ADN fault recovery model.