计及投资效益评估的县级配电网投资分配方法

Method for allocation of county distribution network considering the investment benefit evaluation

为了全面精准、合理科学地对县级配电网(110kV及以下)投资额进行分配,首先,在综合考虑县级配电网在新一轮投资后的投资效益情况下,构建县级配电网投资效益层次化综合评价指标体系。然后,运用五级集对分析模型对该指标体系进行评估。最后,基于单指标评估结果和指标体系综合评估结果构建投资分配调整系数模型,并结合未来用电量需求,对县级配电网投资分配额进行分析和计算。算例表明,该文所提出考虑投资效益评估结果的县级配电网投资分配方法可以用于制定县级配电网精准投资策略,实现县级配电网的精细化规划和有限资金的科学、合理、有效利用。

In order to comprehensively,accurately and reasonably allocate the investment amount of the county-level distribution network(110 kV and below),this paper builds a county-level distribution network investment benefit indicator system by considering the county investment benefits of a new round investment firstly.Then,the indicator system is evaluated by using the five-level set pair analysis model.Furthermore,Based on the single-index evaluation result and the comprehensive evaluation result of the indicator system,the investment allocation adjustment factor model is constructed.In the end,the county-level grid investment allocation amount is analyzed and calculated combining with the future electricity demand.The example shows that the proposed method can be used to formulate the investment strategy precisely for the county-level distribution network to realize the refined planning of the county-level distribution network and the scientific,reasonable and effective use of limited funds.