Research On Coordinated Control Strategy Of Distributed Generation-Energy Storage-Load In Business Park

With the gradual opening of economic transformation,the business park will become an important power users in the future.New energy has some volatility,which will have a greater impact on the stability of the power grid operation.Disposing a certain size of energy storage system(ESS)in a business park effectively improves the problem of low utilization of new energy.With the continuous deepening of the electricity market reform,demand response has played an important role.Therefore,in this paper,the demand response will be considered to study the coordinated control strategy of distributed generation-ESS-load in business park.1 Introduce the typical power system of a modern commercial park,then analysis the basic workflow of energy management system in business park.Introduce the basic control strategy of ESS,which cut peak and fill valley in business park.Finally,analysis disadvantages of 2 methods.2 Propose the variable parameter power difference control strategy for ESS.Based on the typical daily load prediction of the park,the load range can be divided to determine the energy storage system charge and discharge period with constant parameter method.The variable parameter method takes into account the battery SOC fully.By introducing 2 SOC states variables,it divides the load interval and the SOC stages of ESS into 15 subspaces.The sub-objective functions are proposed to coordinate the effect of peak load shifting and SOC.Based on the fitness function variation coefficient sorting method,the weight of each sub-objective function is determined.To make this method have a certain forward-looking and overall,determine the 6 variable values of current 10min over the next 30min objective function of the objective.Different subspaces are provided with different strategies.Finally,a simulation analysis,taking a Shanghai business park as an actual data sample shows that the proposed method is more effective.Finally,demonstrate its balance between SOC status.3 Propose a coordinated control strategy of distributed generation-ESS-load in Business Park based on time of use pricing(TOU)and inter interruptible load(IL)respectively.Introduce demand response and analysis the feasibility and advancement of the two mechanisms in the commercial park.Then establish a multi-period response model on TOU and IR contract model.Combined with TOU,the variable parameter power difference control strategy is improved.Combined with lIR,its coordination with ESS is developed.