基于组合权重的配电网运行经济性评价

The economic evaluation of the distribution system operation based on the combination weighing

针对配电网运行的经济性问题,文中提出了一种基于关联规则和证据理论相结合的组合权重的评价方法。引入数据挖掘中的关联规则,提出根据置信度来确定指标的客观权重;运用Dempster-Shafer组合理论来综合专家意见确定指标的主观权重。在建立分层指标体系的基础上,运用模糊综合评价法对电网的运行状况做出评价。实例分析表明基于组合权重的配网运行经济性评价,可以全面反映配网的运行情况,对配网的经济运行和建设改造具有理论和实际的指导意义。

In view of the problem of the distribution network economic operation, the theory of evaluation is used to find the reason influencing the economic operation. A combination weighing method is proposed in this paper which is based on the association rule and evidential theory. Through finding the association between the indexes and the economic of the distribution system from the historical data, it proposes that using the association rule of data mining to allocate the index weights impersonally according to the confidence. The subjective weights are allocated through combining the expert＇s opinion to use the Dempster-Shafer theory and the AHP. According to the layered and classified index system, the economy of the distribution system operation is evaluated used the fuzzy comprehensive evaluation. The results of an example analysis indicate that the economical evaluation used the combination weighing can reflect the operation situation all-around, and provide preferably value for the distribution network economical operation.