大规模光伏接入受端电网方案综合决策

Comprehensive decision-making method for large-scale photovoltaic system integrated to receiving-end power grid

提出一种基于模糊层次分析和逼近理想解排序的方案评估比选方法,用于大规模光伏接入受端电网方案的综合决策。以系统安全稳定性、光伏出力间歇性、经济性和可扩展性为准则,建立大规模光伏电站接入受端电网方案评估体系,对候选方案各指标进行量化评估;考虑决策者主观偏好的模糊性质,采用模糊层次分析法确定评估体系中各指标的权重,并利用逼近理想解排序法进行多属性决策得到推荐接入方案。山东电网算例展示所提综合决策方法的全过程,结果表明利用该方法可直观地反映各候选方案的优劣,并给出合理的决策结果。

This paper proposed a comprehensive decision-making method based on fuzzy analytic hierarchy process(FAHP) and technique for order preference by similarity to ideal solution(TOPSIS) for large-scale photovoltaic system integrated to receiving-end power grid. A decision-making evaluation index system was established to quantify the indexes of grid-connection schemes, in which main influence factors considered were security and stability, intermittence of PV, economy, and extendibility. Taking into account the fuzziness of the preferences of decision-makers, the FAHP algorithm was applied to determine the weights of indexes. The TOPSIS algorithm was adopted to make the multi-objective decision between schemes to get the TOPSIS solution as the best grid-connection scheme. The case study on Shandong power grid demonstrated the whole process of the comprehensive decision-making method and indicated that the method could reflect the merits and demerits of different schemes visually, with which we could get the reasonable decision results.