Substation Equipment Maintenance, Rcm Applied Research

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.