作　　者： ;

机构地区： 中国南方电网

出　　处： 《电力科学与技术学报》 2019年第4期63-68,共6页

摘　　要： 电力变压器内部结构复杂且运行状态受多种因素影响,为了对其状态做出快速准确地评价,提出一种基于TOPSIS和灰色关联分析的状态评价方法。该方法建立了变压器状态评价的层次结构模型,并运用层次分析法确定了指标的权重大小;引入健康度的概念表征各个指标的优劣情况,对选取的指标分别进行量化和规范化的处理;运用TOPSIS法和灰色关联分析分别计算待评价变压器状态与正、负理想状态之间的欧氏距离和灰色关联度,并将两者结合得到待评价变压器的状态。实际算例分析表明,所提出的状态评价方法能准确地评价变压器的运行状态,同时还能对不同的待评价变压器运行状态进行排序,为检修决策提出合理的依据。 The internal structure of power transformer is complicated and the operation is influenced by various factors. In order to make a rapid and accurate state evaluation of power transformer, this paper proposed an assessment based on TOPSIS and grey relational analysis. Firstly, a hierarchical structure model of transformer state evaluation is established and the analytic hierarchy processis is employed to determine the weight of the index. Secondly, the health degree is introduced to characterize the advantages and disadvantages of each index, and the selected indexes are quantified and standardized. Thirdly, the Euclidean distance and grey relational grade between the transformer state and the positive or negative ideal state are calculated respectively by using the TOPSIS method and grey relational analysis, and then the transformer state is evaluated. Through the example analysis, this operation state evaluation method can not only accurately evaluate the transformer, but also classify the assessment result of transformer operation status, so as to construct a reasonable basis for maintenance decision-making.

关 键 词： 电力变压器 状态评价 灰色关联分析 层次分析法

领　　域： []