考虑需求侧电价的配电网储能设备运行策略与容量的协调优化

光伏、储能和需求侧响应的协调运行可有效平抑负荷波动并提升配电网运行的经济性。为实现通过主动运行提升配电网资产利用率的目标,本文首先改进了主动配电网的运行策略,在电网正常状态下,考虑了用户舒适度以及用电经济性的双重需求,建立了基于启发式滑动数据窗滚动技术的价格型空调快速响应模型;在电网故障状态下,提出了考虑用户赔偿的激励型空调负荷响应模型,以及故障状态下存在互联的馈线组内广义需求侧资源协调调度的共享策略,以减少线路的冗余备用。其次,建立了基于以上运行策略的配电网主动运行收益模型,以及以配电网效益最大为目标的配电网需求侧电价、储能运行策略和容量配置的协同优化模型。最后,以改进的IEEE-33节点配电系统为算例进行了仿真。仿真结果验证了所提模型的有效性,并探讨了用户负荷需求侧资源参与程度对储能配置的影响以及共享机制对提升配电线路利用率的贡献,为主动配电网广义需求侧资源优化配置提供了参考。

The Coordination Optimization Method of Operation Strategy and Capacity of Energy Storage Devices in Distribution Network Considering Demand Side Electricity Price

The coordinated operation of PV, energy storage and demand side response can smooth the load fluctuation and improve the economics of distribution network operation effectively. To improve the utilization rate of distribution network assets through active operation, the operation strategy of active distribution network is improved firstly in this paper. Under normal state, the price-based air-condition response model is built based on the heuristic rolling time window optimization method by taking the comfort and economy of user into account. Under fault state, the incentive-based air-condition demand side response model is built by considering user economic compensation, and the sharing strategy of generalized coordinated regulation for demand side resource is proposed to reduce redundancy backup of lines. Secondly, the economic benefit model of active operation for distribution network companies is built based on above operation strategies. In addition, the co-optimization of electricity price at demand side for distribution network,energy storage running strategy and energy storage allocation is studied to maximize the economic benefit of power distribution company. Then modified IEEE 33-bus distribution system is taken as simulation case. The simulation results verify effectiveness of the proposed method, and the influence of demand response participation rate of user load on energy storage configuration and the effect of the sharing strategy on improving application rate of distribution lines are analyzed, which provides a reference for the optimization and utilization of the generalized demand side resources in active distribution network.