针对目前电力系统中台区无功补偿方案优劣评估大多停留在直接经济效益层面上而忽略电压特性的问题，提出采用逼近理想解法方法从电压特性及直接经济效益两个方面对无功补偿方案综合效益优劣进行评估． 首先从沿线电压特性角度建立电压特性指标并建立直接经济指标;其次依据指标属性对指标进行预处理并用序关系法确定各评估指标的权重;然后获取各指标的正向理想解和负向理想解，并采用改进相近度法计算各无功补偿方案与理想解的相对接近度，从而得出无功补偿方案综合效益优劣排序结果。最后采用文中方法对实际台区 5 种无功补偿方案优劣进行评估，并且与只考虑直接经济效益的优劣排序结果对比，验证文中方法的客观性和有效性．

In the low voltage distribution network area,the current reactive compensation evaluation still remains mostly at the level of direct economic benefit and ignores the voltage characteristics.In order to solve this problem,a TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) technique is proposed to evaluate the comprehensive benefit of the reactive compensation scheme from the aspects of both the voltage characteristics and the direct economic benefit.First,a voltage characteristic index is set up from the perspective of the voltage charac- teristics along the line,and a direct economic benefit index is also set up.Next,the evaluation indexes are prepro- cessed according to their attributes,and the weight of each evaluation index is determined by means of the rank cor- relation analysis.Then,the positive and negative －ideal solutions of each evaluation index are obtained,and the rel- ative close degrees between the reactive compensation scheme and the ideal solution are calculated by means of the improved close degree method,thus achieving the good or bad order of the comprehensive benefit of the reactive com- pensation scheme.Finally,the proposed method is used to evaluate five kinds of reactive power schemes for several actual low voltage distribution network areas,and the result is compared with the result of the good or bad order only based on the direct economic benefit.It is found that the proposed method is both objective and effective.