基于主成分分析的变压器状态量权重方法研究

Weight Definition of Transformer State Variables Based on Principal Component Analysis

针对变压器状态评估中在缺少数据来源的条件下,状态量的选取缺少综合衡量指标的情况,提出一种变压器状态量权重确定的方法,首先根据状态评估导则及故障模式和缺陷分析得到变压器综合状态量和对应的单项状态量,然后利用主成分分析法建立状态量权重模型进行权重的确定;最后以变压器绝缘老化为例验证了此方法的可行性,在实际工程中具有较强的实用性。

In the light of lacking a integrated measurement index when selecting the state variables in transformer condition assessment, the paper proposes the method for the weight definition of transformer state variables. First the integrated state variables and corresponding single state variable is obtained according to the condition assessment guideline and defect analysis, then a weighting model of the state variables is established to determine the weight based on principal component analysis. In the end, the feasibility of this method is verified by a case of the transformer with insulation aging.