主动配电网储能动态配置规划方法

主动配电网中的负荷和分布式发电出力具有明显的周期变化特性,已有的配电网储能规划方法,其规划结果均是接入点和容量固定不变的储能配置,储能的灵活性和价值尚存在较大的发挥空间。提出了一种主动配电网储能动态配置规划方法,即伴随负荷需求和分布式发电出力场景变化,在配电网中动态配置储能装置。以储能在不同场景下的接入点、容量、运行方式为决策变量,以储能带来的综合经济效益最大为目标,构建了主动配电网储能动态配置的混合整数二阶锥规划模型。以IEEE 33节点系统为例,验证了所提方法的可行性和有效性。该方法是对储能装置灵活性运行方式的有益拓展,使其能够服务于主动配电网多变的运行场景,从而使储能价值得到充分发挥。

A planning method of dynamic energy storage configuration in an active distribution network

The load and distributed generation output in an active distribution network have obvious cyclical variation characteristics. The existing energy storage planning methods for active distribution network always output a storage configuration with fixed installation location and capacity. There is still a large space for energy storage to fully exert its flexibility and value to the distribution network. This paper proposes a planning method of dynamic energy storage configuration in an active distribution network. Through this method, the energy storage devices are dynamically allocated between different operating scenarios of the distribution network regarding varying load demands as well as distributed generation outputs. The access points, capacities and operational modes of energy storage devices in different scenarios are taken as the decision variables, the maximum comprehensive economic benefit brought by energy storage is taken as the objective, and thus the Mixed-Integer Second-Order Cone Programming (MISOCP) model for dynamic energy storage configuration is constructed. Taking the IEEE 33-node system as an example, the feasibility and effectiveness of the proposed method are verified. The proposed method can be treated as a useful expansion to the flexible operation of an energy storage device, through which the energy storage can serve well for various operating scenarios of the active distribution network and thus its value can be fully developed.This work is supported by National Key Research and Development Program of China (No. 2016YFB0900600) and Science and Technology Project of China Southern Power Grid Shenzhen Power Supply Bureau Co., Ltd. (No. 0900002019030304ZCPW00001).