电测与仪表Issue(12)：29-33,119,6.
基于代价敏感相关向量机的变压器绝缘状态评估
Insulation Condition Assessment of the Transformer Based on the Cost-Sensitive Relevance Vector Machine
王斯妤1
作者信息
- 1. 华北电力大学河北省输变电设备安全防御重点实验室，河北保定071003
- 折叠
摘要
Abstract
The transformer is an important electric equipment in the power system, whose running state plays an important role in the safe operation of the system.This paper introduced thecost-sensitive learning mechanism to the Relevance Vector Machine, and put forward the term: the Cost-Sensitive Relevance Vector Machine (CS-RVM). With the minimum misdiagnosis loss cost as the goal, the algorithm predicted the fault categories of new samplesaccording to the Bayesian risk theory. With typical examples the paper verified the CS-RVM had high diagnostic accuracy, and could to some extent avoid the misdiagnosis of faultor misdiagnosing high-risk failure as low risk failure. On this basis, the paper tried to apply the CS-RVM to the insulation condition assessment of the transformerproposed the fault diagnosis method of the oil-immersed power transformer based on the CS-RVM so as to overcome the problem that the existing transformer fault diagnosis method did not take into account the issue of misdiagnosis cost difference, and finally verified the effectiveness of the proposed diagnostic method by means of the transformer fault diagnosis example based on the DGA data.关键词
变压器/代价敏感相关向量机/故障诊断/测试Key words
transformer/CS-RVM/fault diagnosis/test分类
信息技术与安全科学引用本文复制引用
王斯妤..基于代价敏感相关向量机的变压器绝缘状态评估[J].电测与仪表,2014,(12):29-33,119,6.
