基于云模型与相似度的配电变压器电气状态综合评估

Comprehensive Evaluation of Distribution Transformer Electrical State Based on Cloud Model and Similarity

为了能够准确、有效地评估配电变压器的电气状态,文章以其电气参量为主要状态指标,提出了配电变压器电气状态分析模型与评估方法,基于云模型与相似度分析了各电气参量的离散性以及趋势性,利用K-means提取了特征向量,量化分析了配电变压器的电气状态,实现了单台配电变压器电气状态纵向监测,以及多台配电变压器电气状态横向对比。经验证,该评估方法可反映配电变压器电气状态,有助于电力运营部门及用户合理制定运维与检修策略。

In order to accurately and effectively evaluate the electrical state of distribution transformers,the analysis model and evaluation method of electrical state of distribution transformer are proposed based on its electrical parameters in this paper,the discreteness and trend of electrical parameters are analyzed based on cloud model and similarity,and the feature vectors are extracted by K-means,and the electrical state of distribution transformer is quantitatively analyzed.It is realized that the vertical monitoring of electrical state of single distribution transformer and horizontal comparison of electrical state of multiple distribution transformers.It has been proved that the evaluation method in this paper can reflect the electrical state of distribution transformers,which is helpful for power operation departments and users to formulate operation and maintenance strategies.