当前变压器状态检修中细化部件评估越来越受到重视，研究了一种基于熵权TOPSIS原理的变压器套管绝缘状态评估新方法。该方法克服了目前多数评估方法中主观确定权重的不利影响，引入熵的概念来确定评价指标的权重，全面考虑评估指标所含信息量。利用TOPSIS评价方法将绝缘评估问题转化为向量空间的距离评价问题，基于实例和标准样本间的欧式距离贴近度，计算得到变压器套管绝缘状态等级的定量划分。并用实例验证了该方法的有效性。
Now more and more attention are paid to the assessment of components in state maintenance for transformer, so a new insulation condition assessment method for transformer bushing was studied based on TOPSIS theory with entropy weight. The method overcame the adverse effect of subjective fac-tor in the process of determining the weight in most methods, and it determined the weight by introduc-ing the concept of“entropy”. The method also considered the information of assessment index. The insu-lation assessment problem was transformed into a distance problem of vector space using TOPSIS assess-ment method. Based on the Euclidean distance between the sample and standard sample, the insulation state of transformer bushing can be divided into the given grades. The example analysis shows that the method is effective.
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