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The RCM application study of substation equipment maintenance

Author: YangQing
Tutor: ShuHongChun;XueWu
School: Kunming University of Science and Technology
Course: Electrical Engineering
Keywords: transformation equipment Reliability-Centered Maintenance(RCM) Analysis Hierarchy Process(AHP) Fault Tree Analysis(FTA) fuzzy comprehensive evaluation
CLC: TM769
Type: Master's thesis
Year: 2007
Downloads: 165
Quote: 1
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Executive Summary

For a long time, time-based maintenance is used in China’s transformation equipment maintenance, and which decided to extend or shorten the repair cycle as a matter of experience have made indelible contribution for the reliability of equipment. But there are drawbacks as following: Along with the complexity of the equipment, time-based maintenance will be a corresponding increase in the input, so that reduce the Cost-Performance Ratio of the it, thus lowering the relative labor productivity, is not suited to modern enterprise management model which as economic benefit is the center; time-based maintenance is bound to lead to some good running equipment cyclical outage, a result of maintenance work focuses on one phase, not conducive to raising the quality of maintenance.With the development of society and the changes in the market, such a maintenance mode, can no longer meet the requirements of transformation equipment maintenance. In view of our current technical and economic business conditions, RCM (reliability-centered maintenance) can be considered as a best option. This method is equipment failure mode and effects of infection analysis for the foundation, the starting point is not simply improve the reliability, available ration, but with consider the best combination of economy and reliability, that is the most economical way to improve reliability . The method used is that use technical analysis to replace experience regulate, with the results of technical analysis as the basis for the maintenance decision.Based on the above reasons, the application research of transformation equipment maintenance method based on RCM (reliability-centered maintenance) was put forward. The main contents of this paper are as follows:First, narrate the implementation of RCM in the foreign and domestic research and application, and do detailed presentation about the process of implementation of the RCM.Second, on the basis of in-depth understanding of the implementation process of RCM, advance Evaluation substation equipment important model which based on analysis hierarchy process. And screen transformation equipment which needs the implementation of RCM through equipment important.Third, in full understanding of a variety of transformation equipment fault diagnosis method, the method based on the fault tree analysis has characteristics of convenience in application and clear hierarchy; choose fault tree analysis as the preferred method of transformation equipment of fault diagnosis. Moreover apply fault tree analysis in some equipment fault diagnosis in Qujing City 220 kV station Zhanyi.Forth, after apply fault tree analysis to diagnose equipment failures, advance decision-making model of maintenance of the equipment. In the model, time-based maintenance, time-based replacement and condition-based maintenance are three goals, through the use of fuzzy comprehensive evaluation method to make decision-making for maintenance method, and apply the model to relevant equipment in Zhanyi substation.Fifth, analyze the consequences and prospects after the implementation of RCM.This connection with domestic transformation equipment maintenance carried out a detailed study to maintenance method of transformation equipment with use of RCM theory. Through this research, have a deeper understanding on the theory of RCM and hope that introduce the theory of RCM to the equipment maintenance in Yunnan power grid, in order to achieve the purposes of saving resources and enhancing economic efficiency.

Full-text Catalog

Abstract     4-6
ABSTRACT     6-8
directory     8-11
first chapter     11-21
1.1 Introduction    
1.2 Reliability-centered maintenance of basic concepts     11-17
1.2.1 Reliability     11-13
1.2.2 Maintainability     13-14
1.2.3 Availability     14-17
1.3 the development of domestic and foreign repair strategy     17-19
1.3.1 after the maintenance phase     17
1.3.2 regular maintenance phase     17
1.3.3 state maintenance phase     17-18
1.3.4 of equipment condition-based maintenance application status     18-19
1.4 SAE RCM Standard     19-20
1.5 of this thesis     20-21
Chapter II substation equipment the RCM implementation of Introduction     21-39
2.1 Introduction     21
2.2 substation within the implementation of the the RCM device Assessment     21
2.3 device functions related concepts About     21-25
2.3.1 main function     22
2.3.2 secondary functions     22-23
2.3.3 protection features     23-25
2.3.4 redundant functions     25
2.4 type of equipment failure Introduction     25-30
2.4.1 transformer fault     25-27
2.4.2 breaker failure type     27-28
2.4.3 capacitor fault type     28-30
2.5 Fault Diagnosis Method Introduction     30-33
2.5.1 Fault Tree Analysis     30-31
2.5.2 expert system-based approach     31
2.5.3 method based on fuzzy reasoning     31
2.5.4 artificial neural network method     31-32
2.5.5 Bayesian network method     32-33
a 2.6 maintenance strategy and decision-making method Introduction     33-37
2.6.1 Equipment Maintenance Strategy     33-35
2.6.2 Maintenance Decision Method     35-37
2.7 This chapter Summary     37-39
Chapter substation equipment important degree assessment and screening     39-49
3.1 Introduction     39
About 3.2 Analytic Hierarchy Process     39-44
3.2.1 Analytic Hierarchy Process principle     39-40
3.2.2 Analysis Application steps     40-44
3.3 the important equipment based on the Analytic Hierarchy Process Assessment     44-47
3.3.1 using analytic hierarchy process for equipment important degree assessment     44-46
3.3.2 need to implement RCM device filter     46-47
3.4 This chapter Summary     47-49
Chapter substation equipment fault diagnosis method     49-57
4.1 Introduction     49
4.2 Fault Tree Analysis     49-52
4.2.1 Fault tree analysis method principle     49-50
4.2.2 basic methods     50-52
4.2.4 Fault Tree Analysis     52
4.3 application fault tree analysis fault diagnosis of transformer bushing     52-54
4.3.1 establish to bushing fault tree     52-54
4.3.2 Fault tree analysis method application     54
4.4 This chapter Summary     54-57
Chapter substation equipment maintenance way of decision-making     57-75
5.1 Introduction     57
5.2 maintenance of way and maintenance decision-making method to determine     57-59
5.3 fuzzy comprehensive evaluation mathematical model     59-64
5.3.1 Single-level fuzzy comprehensive evaluation mathematical model     59-63
5.3.2 multi-level fuzzy comprehensive evaluation mathematical model     63-64
5.4 maintenance mode decision model     64-69
5.4.1 to determine the factors collection     64-65
5.4.2 determine reviews collection     65-66
5.4.3 determine fuzzy evaluation matrix     66
5.4.4 to determine the weights of the various performance factors and the evaluation factors re-gathers     66-68
5.4.5 maintenance decision-making with two fuzzy comprehensive evaluation     68-69
5.4.6 Evaluation results processing     69
5.5 example     69-74
5.5.1 for transformer maintenance decisions     69-73
5.5.2 for other equipment maintenance decision     73-74
5.6 This chapter Summary     74-75
Chapter VI the RCM implementation of effects analysis     75-81
6.1 Introduction     75
6.2 RCM implementation effect analysis     75-79
6.2.1 RCM analysis results     75-76
6.2.2 RCM benefits     76-79
6.3 This chapter Summary     79-81
Chapter VII of the conclusions and recommendations     81-83
Acknowledgements     83-85
References     85-87
Appendix     87

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Power system automation > Computer application in power system
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