Spinning Reserve Optimization Model Based On Bi-level Programming With Wind Farms

Due to the randomness and uncontrollable of wind power,it needs to increase the spinning reserve capacity of the system in order to ensure the system stable running under the condition of large scale wind power grid.Large-scale wind power integrated make the reserve capacity of conventional deterministic methods cannot meet the power system both economic and reliable,some new method of spinning reserve configuration are adopt.As a result of the coupling relationship between the units power output and the spinning reserve services,system spinning reserve decision-making scheduling will affect the outcome of the unit scheduling and economic interests due to the change of principal and subordinate relationship or diversification of the main interests.Set up reasonable spinning reserve service optimization and decision-making dispatching mechanism,to maintaining the safe and stable operation of system,promote the optimized allocation of resources,improve the supply of ancillary services enthusiasm has important significance.This article main research content is as follows:First of all,the research of optimal allocation of spinning reserve power system,power system spinning reserve bi-level programming optimization allocation model is established according to the coupling relationship between the unit of power output and the spinning reserve services.For the solving of the model,Priority method is used to determine the startup-shutdown sequence of unit,then the particle swarm optimization and the simple method is used to solve the bi-level programming of the units power output and spinning reserve scheduling plan.The results reflected the power configuration of power system operation and standby auxiliary services configuration process of principal and subordinate relationships and achieve the optimal allocation of resources.Secondly,optimal allocation of spinning reserve considering power system integrated wind power.According to the percentage of the wind power output increase system spinning reserve on the basis of the original constraint for spinning reserve which deal with wind power prediction error,meanwhile taking into account the different unit the integrated prices for spinning reserve.Priority method is used to determine the startup-shutdown sequence of unit,and then the particle swarm optimization algorithm and the simple method is used to solve the system optimal scheduling plan.Finally,it considers the loss of load probability constraints to ensure safe and reliable operation of the system in the optimal configuration of spinning reserve.On the bi-level programming of the lower target decision,using Q function approximation method,the system loss of load probability is represented explicitly by using analytic expression in constraint condition.Finally,optimize power output and spinning reserve scheduling configuration realizing the coordinated optimization scheduling cycle.