基于改进灰色关联分析的变压器故障识别_吕干云.pdfVIP

第 24 卷 第 10 期 中 国 电 机 工 程 学 报 Vol.24 No.10 Oct. 2004 2004 年 10 月 Proceedings of the CSEE ©2004 Chin.Soc.for Elec.Eng. 0258-8013 2004 10-0121-06 TM411 A 470·40 文章编号： （ ） 中图分类号： 文献标识码： 学科分类号： 基于改进灰色关联分析的变压器故障识别 吕干云，程浩忠，翟海保，董立新 （上海交通大学电气工程系，上海 200030 ） FAULT DIAGNOSIS OF POWER TRANSFORMER BASED ON IMPROVED GREY RELATION ANALYSIS LÜ Gan-yun, CHENG Hao-zhong，ZHAI Hai-bao, DONG Li-xin （Department of Electrical Engineering, Shanghai Jiaotong University, Shanghai 200030, China ） ABSTRACT: An improved grey relation analysis method is 1 引言 brought forward which is based on the concept of Group 在电力工业中，变压器作为电力系统的枢纽设 Relation Index. Its definition and the calculating process are 备，对它进行故障检测，不仅有利于保证其安全运 proposed in this paper. In contrast to the traditional grey 行，而且对于提高电力系统的可靠性都将有重要的 relation analysis, the improved grey relation analysis has two 影响。对变压器故障进行识别，及时发现变压器内 advantages over the traditional grey relation analysis: ① 部故障的性质和发展趋势，能准确掌握变压器的运 Having a much broader range of its application; ② Greatly 行状况，是合理制定维护措施的重要依据。 strengthened the veracity and reliability of relation analysis, 总结数十年的经验表明，变压器油中的溶解气 while the improved method is applied to the fault diagnosis of 体的组成比例、浓度、种类密切相关。电力变压器 power transformer. The analysis result shows that the improved 定期实验项目都应是从色谱分析开始的，内部故障 method has a much better effect than the traditional grey 是变压器油中气体含量突然增长的主要原因，绝大 relation analysis, and the improved method can also be applied 部分变压器的缺陷都是从色谱分析发现的。1997 年 正式修订实施的 DL/T596-1996 《电力设备预防性试 to many other applications in a wide range.