一种分布式光伏选线定容的二阶锥规划方法

在满足大容量分布式电源多馈线接入并被全部吸纳的前提下,协调好各接入点位置与用户需求之间的关系对于智能电网规划是十分必要的。协同考虑分布式光伏的规划设计要求以及含分布式电源的配电网重构方法,提出一种分布式光伏选线定容的新方法。在分布式光伏总容量确定而接入馈线、各馈线接入位置及容量不确定的情况下,构建基于Distflow潮流方程约束的规划模型,并采用二阶锥松弛技术转化为可解的混合整数二阶锥规划模型,以优化得到分布式光伏接入的最优规划方案以及该接入方案下配网的最优重构结果。通过多个算例进行分析比较,验证所提方法的正确性和有效性。

A second-order cone programming method of feeder-selecting and sizing for distributed photovoltaic

Under the precondition that large capacity Distributed Generation (DG) allows multi-feeder access system and all the DGs are absorbed, it is very necessary for the planning of the smart grid to coordinate the relationship between the position of each access point and the users'' demand. This paper coordinately considers the planning and design requirements of the distributed photovoltaic (PV) power generation as well as the reconfiguration of power distribution systems with DG and proposes a novel method for feeder-selecting and sizing of the distributed PV power generation. Under the condition in which the total capacity of the distributed PV power generation has been determined and the feeder and capacity of each access point haven''t yet been determined, a second-order cone programming planning model with the constraint of the Distflow equations is developed to get the optimal planning program for the distributed PV power generation access. And at the same time the optimal reconfiguration results of the power distribution system under the effect of the new DG are also obtained. Finally the correctness and validity of the proposed method are verified by results of calculation example. This work is supported by National Natural Science Foundation of China (No. 51541707) and National Key Basic Research Program of China (973 Program) (No. 2013CB228205).