基于夏普利值的中压配电网扩建费用分摊方法

Distribution System Expansion Cost Allocation Based on Shapley Value

电力市场环境下配电网投资必须由接入其中的各方承担,公平合理的费用分摊方案是配电网健康有序发展的重要内容之一。提出一种基于夏普利值与最优潮流结合的费用分摊方法。首先借助最优潮流,确定在灵活可控配网中,由于分布式电源、负荷接入引起的最小扩建费用;再利用夏普利值对各方影响进行加权平均,进而确定费用分摊方案。以北京市延庆地区为蓝本设计算例进行验证,对一般负荷、电动汽车、光伏接入后各方所应承担的费用进行了分析。算例表明,所提方法能反映接入要素的类型、接入位置、容量、可控性等多个因素的影响。当接入方具有抑制主变过负载、电压越限、可灵活调节等属性时,可降低其接入费用,从而证明了该方法能够有效构成经济激励。

Investment of a distribution system must be allocated to system participants. Fair and reasonable cost allocation scheme is a key aspect towards a healthy distribution system. This paper proposes a cost allocation method based on Shapley Value method and optimal power flow. Firstly, optimal power flow determines minimum investment cost triggered by distributed generations and loads in controllable distribution system environment. Then Shapley Value method quantifies effect of each participant and allocates its responsibility. A case system is designed out of a real distribution system in Yanqing District, Beijing, where integration costs of conventional loads, electric vehicles and distributed solar generations are allocated. The case studies demonstrate that the proposed method can effectively reflect impact of location, capacity, controllability of loads and distributed generations. The participants relieving loading/voltage violations or having better controllability take less responsibility, thus share less cost. The case studies demonstrate effectiveness of the proposed method in constituting economical motivations.