摘要随着世界经济社会的发展，各国电网不断扩大，电力系统安全稳定运行的问题越来越突出，而传统的技术手段与措施已经不能适应现代电网的需要，“智能变电站”的出现使变压器故障的诊断技术有了长足的进步。82877

本文首先介绍了变压器故障的检测技术，主要包括油中可燃性气体的色谱分析等传统方法，以及模糊诊断法等现代智能检测方法。其次，本文先基于油中溶解气体分析法，设计了一套微机自动诊断变压器故障的方法，对变压器故障作故障诊断。然后采用模糊诊断方法，通过变压器的征兆集和故障集的相互关系，建立模糊诊断矩阵，根据最大隶属度原则诊断故障。最后，通过labview仿真验证了微机自动诊断变压器故障方法和模糊诊断法的有效性。

毕业论文关键词  智能变电站  故障诊断技术  模糊理论  NI CRIO平台

毕业设计说明书外文摘要

Title    A Study of Wrong Diagnosis Method of Smart Substation Transformer Based on NI CRIO Platform                                                   

Abstract With the development of economy and society, national power grid continues to expand, the problem of power system security and stability is more and more prominent。 The traditional techniques and measures have been unable to meet the needs of modern power grid。 The appearance of the Smart Substation has made great progress in the diagnosis technology of transformer fault。 

This paper introduces the detection technology of the transformer fault, mainly including the traditional methods such as gas chromatography analysis, and the method of fuzzy diagnosis and so on。 Secondly, based on the analysis method of dissolved gas in oil, a set of automatic fault diagnosis method of transformer is designed, which is used for fault diagnosis of transformer。 Then the fuzzy diagnosis method is adopted, and the fuzzy diagnosis matrix is established by the mutual relation of the transformer's symptom set and the fault set, and the fault diagnosis is based on the principle of the maximum membership degree。 Finally, the Labview simulation proves the validity of the fault diagnosis method and the fuzzy diagnosis method of the computer。

Keywords  Smart substation  fault diagnosis technology  fuzzy theory   NI CRIO platform

目   次

1 绪论 1

1。1  论文的研究背景 1

1。2  变压器故障诊断研究现状 1

1。3  论文的研究内容 2

2  变压器故障诊断方法 4

2。1  传统诊断方法 4

2。2  智能诊断方法 6

2。3  本章小结 10

3  基于三比值法的微机自动诊断系统 12

3。1  电力变压器的常见故障 12

3。2  变压器故障时油中气体的产生和组分 13

3。3  基于三比值法变压器故障性质的诊断 14

3。4本章小结 17

4  变压器模糊故障诊断 17

4。1  模糊诊断基本概念 17