Journal of shanghai Jiaotong University (Science) ›› 2015, Vol. 20 ›› Issue (3): 353-357.doi: 10.1007/s12204-015-1636-5

Previous Articles     Next Articles

Transformer Fault Analysis Based on Bayesian Networks and Importance Measures

Transformer Fault Analysis Based on Bayesian Networks and Importance Measures

REN Fang-yu (任方宇), SI Shu-bin* (司书宾), CAI Zhi-qiang (蔡志强), ZHANG Shuai (张帅)   

  1. (School of Mechantronics, Northwestern Polytechnical University, Xi’an 710072, China)
  2. (School of Mechantronics, Northwestern Polytechnical University, Xi’an 710072, China)
  • Published:2015-06-11
  • Contact: SI Shu-bin (司书宾) E-mail:sisb@nwpu.edu.cn

Abstract: Complex environment stresses bring many uncertainties to transformer fault. The Bayesian network (BN) can represent prior knowledge in the form of probability which makes it an effective tool to deal with the uncertain problems. This paper established a BN model for the transformer fault diagnosis with practical operation dataset and expert knowledge. Then importance measures are introduced to indentify the key attributes which affect the results of transformer diagnosis most. Moreover, a strategy was proposed to reduce the number of attribute in transformer fault detection and the resource cost was saved. At last, a diagnosis case of practical transformer was implemented to verify the effectiveness of this method.

Key words: transformer| fault diagnosis| Bayesian network (BN)| importance measures

摘要: Complex environment stresses bring many uncertainties to transformer fault. The Bayesian network (BN) can represent prior knowledge in the form of probability which makes it an effective tool to deal with the uncertain problems. This paper established a BN model for the transformer fault diagnosis with practical operation dataset and expert knowledge. Then importance measures are introduced to indentify the key attributes which affect the results of transformer diagnosis most. Moreover, a strategy was proposed to reduce the number of attribute in transformer fault detection and the resource cost was saved. At last, a diagnosis case of practical transformer was implemented to verify the effectiveness of this method.

关键词: transformer| fault diagnosis| Bayesian network (BN)| importance measures

CLC Number: