Research on Optimal Allocation Method of Distribution Network Energy Storage Containing High Intermittent DG
Distributed generation(DG)with high intermittency have large stochasticity,which will have a large impact on the stability of distribution network operation after grid-connected generation.To ensure the power quality and consumption capacity of distribution network operation,the optimal allocation method of distribution network energy storage containing high intermittent DG is researched.Firstly,the maximum access capacity of DG is estimated to analyze the dissipation capacity of the distribution network.Secondly,the load control target is selected to eliminate the load burr existing in the energy storage system.Then,the energy storage in the distribution network is coordinated and planned based on the demand-side response,and the balance between power generation and power consumption of the energy storage system is controlled.Finally,the optimal allocation model of energy storage in the distribution network containing high intermittent DG is established to make the voltage converge or remain in the optimized interval.After experimental demonstration and analysis,the proposed method can reduce the fluctuation range of the load curve to 250～350 kW,which has better control ability for the load.The method can effectively solve the problem of voltage crossing the line and has a better voltage regulation effect.
Distribution networkLoad controlDistributed generation(DG)Energy storageHigh intermittencyDemand side
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