基于层次动态灰色关联分析的配电网运行状态评价指标体系的构建与应用

配电网现行评价指标数量多、指标体系复杂、随机性强、指标间信息冗余问题凸显,针对这些问题提出一种基于层次动态灰色关联分析的评价指标体系构建方法。首先找出影响配电网运行状态的初始指标;然后通过提出的层次动态灰色关联分析法得到初始指标间的综合关联度,将综合关联度向量内的元素进行动态筛选,筛选出更准确的评价指标;再以指标的信息贡献率来验证筛选后评价指标的有效性和合理性,建立最终评价指标体系。最后通过实例进行分析,构建的评价指标体系得到的评价结果与配电网实际运行情况相符,证明了所构建指标体系的可靠性和合理性,可为配电网优化运行提供有效指导。

Construction and Application of Distribution Network Operational Status Evaluation Index System Based on Hierarchical Dynamic Grey Correlation Analysis

The current evaluation index of the distribution network is large, the index system is complex, the randomness is strong, and the information redundancy problem between indicators is highlighted. A method for constructing the evaluation index system based on hierarchical dynamic grey relational analysis is proposed. Firstly, find the initial index that affects the operating state of the distribution network. Then, through the proposed hierarchical dynamic gray correlation analysis method, the comprehensive correlation degree between the initial indicators is obtained, and the elements in the comprehensive correlation degree vector are dynamically filtered to select a more accurate evaluation. Indicators; then verify the validity and rationality of the post-screening evaluation indicators with the information contribution rate of the indicators, and establish a final evaluation index system. Finally, through the example analysis, the evaluation results obtained by the evaluation index system constructed in this paper are consistent with the actual operation of the distribution network, which proves the reliability and rationality of the constructed indicator system, which can provide effective guidance for the optimal operation of the distribution network.