兼顾经济品质的配电网分布式光伏承载能力评估方法

Evaluation method of distributed photovoltaic hosting capacity of distribution network considering economic quality

为了量化评估高比例分布式光伏接入配电网所产生的综合影响,本文提出一种兼顾经济品质的配电网分布式光伏承载能力评估方法。首先,从分布式光伏并网特性、分布式光伏利用特性和配电网适应性3个方面,构建配电网承载能力综合评价指标体系;然后,综合考虑光伏接入量和经济品质,建立光伏并网容量优化模型,并根据分布式光伏不同开发需求,形成不同并网容量接入方案;最后采用状态空间评价方法对配电网分布式光伏承载能力进行综合评估。通过对IEEE33节点配电网进行仿真分析,结果表明所提承载能力评估方法能够全面客观地反映配电网对于分布式光伏的承载能力。

In order to quantify and evaluate the comprehensive impact of high proportion distributed photovoltaic access to the distribution network,an evaluation method of distributed photovoltaic hosting capacity of distribution network considering economic quality is proposed.Firstly,a comprehensive evaluation index system of distribution network hosting capacity is established from three aspects:distributed photovoltaic grid connection characteristics,distributed photovoltaic utilization characteristics and distribution network adaptability.Then,taking photovoltaic access quantity and economic quality into consideration,the photovoltaic grid-connected capacity optimization model is established,and different grid-connected capacity access schemes are formed according to the different development requirements of distributed photovoltaic.Finally,the state space evaluation method is used to comprehensively evaluate the distributed photovoltaic hosting capacity of distribution network.Through the simulation analysis of IEEE33 node distribution network,the results show that the proposed hosting capacity evaluation method can comprehensively and objectively reflect the hosting capacity of the distribution network for distributed photovoltaic.