Electronic Science and Technology ›› 2020, Vol. 33 ›› Issue (11): 36-40.doi: 10.16180/j.cnki.issn1007-7820.2020.11.007

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A Transformer Fault Diagnosis Method Integrating Artificial Fish Swarm Algorithm with Least Square Support Vector Machine

YANG Yu,ZENG Guohui,HUANG Bo   

  1. School of Electronic and Electrical Engineering,Shanghai University of Engineering Science,Shanghai 201600,China
  • Received:2019-08-20 Online:2020-11-15 Published:2020-11-27
  • Supported by:
    National Natural Science Foundation of China(61603242);Jiangxi Province Economic Crime Investigation and Collaborative Innovation Center of Prevention and Control Technology(JXJZXTCX-030)

Abstract:

In view of the information uncertainty of transformer fault data and the low accuracy of traditional diagnostic methods, the combination of artificial fish swarm algorithm and least squares support vector machine is used to diagnose transformer fault. The DGA characteristic gas ratios of IECTC10 database is used as the input vectors, and the fault diagnosis model of transformers is designed based on LS_SVM. Meanwhile, the artificial fish swarm algorithm is utilized to optimize the parameters of the least squares support vector machine. Then, based on the diagnosis result, the multi-ratio characteristic parameter combination with the best classification effect is selected. The experimental verification results show that the accuracy of the proposed diagnostic method was up to 96.67%, and it has a higher accuracy rate of fault diagnosis.

Key words: least square support vector machine, fault diagnosis, artificial fish swarm algorithm, power transformer, DGA, IECTC10 database

CLC Number: 

  • TP181