知识节点-电气时代网.doc

基于知识节点和FMECA的变压器故障诊断系统 谷凯凯1，徐进霞1，周正钦1，2，苏磊3（1. ，2. 国网四川省电力公司，四川 成都 610000；3. 国网上海市电力公司，上海 200000）摘要：针对变压器结构复杂、监测数据相对独立、难以对设备（子部件）进行综合健康评判，在故障诊断信息模型基础上，本文提出了一种知识节点，用于获取故障模式、影响及危害分析模型，实现故障表现、监测信息、原因及策略的协同工作；在此基础上，建立了变压器的故障诊断模型，实例表明，该方法 关键词：变压器；知识节点；故障模式、影响及危害性分析；故障诊断中文关键词中，“FMECA”为英文术语缩略词，显然不妥，应为体现文章技术关键的中文关键词全称 中图分类号：TM933 文献标识码：B 文章编号： Transformer Fault Diagnosis System Based on the Knowledge Nodes and FMECAGU Kaikai1,XU Jinxia1, ZHOU Zhengqin1, LIU Yicen2, SU Lei 3 （1. State Grid Electric Power Research Institute，Hubei Wuhan 430074; 2.State Grid Sichuan Electrical Power Company，Sichuan Chengdu 610000; 3.State Grid Shanghai Electrical Power Company，Shanghai 200000） Abstract：In view of the complex structure of the transformer, the monitoring data is relatively independentt is difficult to carry on the comprehensive health evaluation to the equipment (sub components). Based on the information model of fault diagnosis, this paper presents a knowledge node. It can be used to get the information of the index which is difficult to obtain in the dynamic process. Through the establishment of failure mode, effect and harm to analysis model. It can realize the cooperative work of monitoring information, fault performance, causes and strategies. On this basis, the fault diagnosis model of the transformer is established. Examples show that this method can solve the problem of multi-information fusion and the problem of key indicators are difficult to obtain. At the same time its diagnostic conclusion reliability and practicality. This will lay the foundation for the realization of the transformer lean overhaul. Keywords：Transformer; knowledge node; Failure Mode Effects and Criticality Analysis; fault diagnosis 0　引 言 遇到结构复杂的设备情况下，已经成为运维工作者的一个比较常用的辅助手段1]。 变压器运行状态对电网的安全与稳定有很大影响FMECA(Failure Mode Effects and Criticality Analysis,故障模式、影响及危害性分析)文中的英文缩略词（如FMECA），在文中首次出现时应标列中英文全称，以便于读者理解，也表述规范。的诊断1　的1所示。传统的故障诊断信息体系，其获取的状态信息相对独立且数据分析主要围绕着单变量开展，无法对变压器的整体状态进行评价