分布式储能系统接入配电网的容量配置和有序布点综合优化方法

随着电储能技术经济性的不断提升,在配电网中大量接入分布式储能系统(DESS)已成为一个发展趋势。针对DESS有序接入中面临的规划与运行问题,提出了一种DESS的容量配置和有序布点的综合优化方法:上层模型为考虑DESS投资收益和减缓配电网增容的容量配置模型;下层模型为考虑DESS特性和容量限制、调节负荷削峰填谷且平抑波动的布点优化模型。以IEEE 33节点系统为例,对所提优化模型与方法的有效性进行了验证,并在此基础上得出了DESS在配电网中的布局方案。仿真结果表明,所提综合优化方法可适用于不同配置容量、不同布点数量DESS接入的应用场景,能为大量DESS接入配电网的规划与审核提供技术支持。

Comprehensive optimization method of capacity configuration and ordered installation for distributed energy storage system accessing distribution network

With the continuous technical economy improvement of electric energy storage, it has become a development trend to assess a large number of DESSs(Distributed Energy Storage Systems) in the distribution network. Aiming at the planning and operation problems faced by ordered access of DESSs, a comprehensive optimization method for capacity configuration and ordered installation of DESS is proposed. The upper layer model is the capacity configuration model, which considers the investment income of DESS and slowing down the capacity increase of distribution network. The lower layer model is the installation spot optimization model, which considers the characteristics and capacity limit of DESS, the load regulation for peak-load shifting and power fluctuation smoothing. The validity of the proposed method is verified by the example of IEEE 33-bus system, based on which, the placement scheme of DESS accessing to distribution network is obtained. Simulative results show that, the proposed comprehensive optimization method is suitable for different application scenarios with the integration of DESS of different capacity configurations and different installation spots and can provide a technical support for the planning and managing of large-scale DESS accessing to the distribution network.