计及分布式电源渗透率变化的变电站动态扩展规划

针对规划区域在不同发展阶段分布式电源(DG)渗透率由低到高变化场景下的源网荷协调匹配问题,提出了一种有源配电网变电站动态扩展规划方法。首先,考虑变电站滚动投入效应及规划期内剩余价值差异,建立了一种计及DG渗透率的变电站动态扩展规划模型。其次,考虑负载均衡度和DG置信容量对变电站供电范围划分的影响,提出了加权Voronoi图算法的罚函数、凹凸性和方向性改进方法。然后,提出了基于遗传算法和启发式算法的有源配电网变电站动态扩展规划求解方法,得到有源配电网变电站建设顺序。最后,通过实例说明了所述方法的科学性和实用性。

Dynamic Expansion Planning for Substation Considering Variation of Distributed Generator Permeability

Aiming at the problem of coordination of source, network and load in planning area where the permeability of distributed generator varies from low to high at different stages of development, a dynamic expansion planning method for substation with distributed generator penetration is proposed. Firstly, considering the rolling input effect and the residual value difference of substation during the planning period, a dynamic expansion planning model for substation with distributed generator permeability is established. Secondly, considering load balance and the influence of distributed generator capacity on the power supply division of substation, the penalty function, convexity and direction improvement methods of weighted Voronoi diagram algorithm are achieved. Thirdly, the substation dynamic expansion planning method of active distribution network based on genetic algorithm and heuristic algorithm is proposed, and the construction sequence of active distribution network substation is obtained. Finally, an example is given to illustrate the scientific and practicality of the method.