基于G2-熵权法的低压配网台区状态特性评估

从低压配网台区的线路特征、运行特征2个主要方面的指标对低压配网台区状态特性进行评估。首先从上述2个方面建立评估指标体系;其次对指标进行一致化和无量纲处理;然后采用基于功能驱动的G_2法(唯一参照物法)加入专家经验求得各指标的主观权重,同时采用基于数据差异驱动的熵权法求得各指标的客观权重;最后利用拉格朗日最优乘子法综合主客观权重求得各指标的综合权重,得到低压配网台区状态特性的评估函数,根据评估函数值对低压配网台区状态特性做出评估。通过对某地的若干个低压配网台区进行实例分析,验证了该评估方法的有效性和可行性。

Conditional characteristic evaluation based on G2-entropy weight method for low-voltage distribution network

The conditional characteristics of low-voltage distribution network are evaluated in two aspects: line characteristics and operating characteristics. An evaluation index system is established for these two aspects, all indexes are unified and nondimensionalized, the function-driven G2 method joined with the expert experience is applied to obtain the subjective weight of each index, the data-difference-driven entropy weight method is applied to obtain the objective weight of each index, the Lagrange optimal multiplier method is applied to obtain the comprehensive weight of each index for the evaluation function, and the conditional characteristics of low-voltage distribution network are evaluated according to the values of evaluation function. Analysis of conditional characteristics for several actual low-voltage distribution networks verifies the validity and feasibility of the proposed evaluation method.