變壓器故障診斷專家系統(tǒng)的改良設計
鄭燁1,黃海2,趙海峰1,袁帥1
(1 湖南省送變電工程公司,湖南 長沙 410007;
2 湖南省電力公司長沙供電分公司,湖南 長沙 410001)
摘 要: 介紹了變壓器局部放電模型、分類以及局部放電信號在線檢測技術,針對變壓器局部放電的故障診斷,設計了一種基于模糊推理的變壓器局部放電專家系統(tǒng),該系統(tǒng)建立在傳統(tǒng)的專家系統(tǒng)和模糊推理器上。通過仿真實驗結果表明,改良后的專家系統(tǒng)對四種典型局部放電信號的識別率有較大提高,為進行局部放電的模式識別提供了一種可靠方法。
關鍵詞: 局部放電;故障診斷;模糊推理;專家系統(tǒng)
中圖分類號:TM41 文獻標識碼:A 文章編號:1007-3175(2014)01-0047-04
Improved Design of Expert System for Transformer Fault Diagnosis
ZHENG Ye1, HUANG Hai2, ZHAO Hai-feng1, YUAN Shuai1
(1 Hunan Electric Power Transmission & Transformation Corporation, Changsha 410007, China;
2 Changsha Power Supply Branch of Hunan Electric Power Company, Changsha 410001, China)
Abstract: Introduction was made to the model and categories of transformer partial discharge, as well as the online detection technology of partial discharge signals. Aiming at the fault diagnosis of transformer partial discharge, this paper designed a kind of expert system of transformer partial discharge based on fuzzy reasoning. This system was built on the traditional expert systems and fuzzy reasoning unit. The results of simulation experiments show that the improved expert system greatly raised the recognition rate of four typical partial discharge signals, which provides a reliable method for partial discharge pattern recognition.
Key words: partial discharge; fault diagnosis; fuzzy reasoning; expert system
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