بهینه سازی نگهداری و تعمیراتِ مبتنی بر قابلیت اطمینان برای سیستم های توزیع قدرت

Today’s electricity distribution systems operate in a liberalized market. These systems should therefore be able to provide electricity to customers with a high degree of reliability and be cost-effective for suppliers. RCM (Reliability Centred Maintenance) was invented by the aircraft industry in the 1960s, to organize the increasing need for maintenance for reducing costs without reducing b safety. Today RCM-methods invented by ALADON [1] are seen as very complex and are not fully accepted by the Algerian power industry. The extensive need of human and capital resources in the introduction phase is also a negative factor that could be one of the reasons of why RCM methods are not used in our branch. This article provides a discussion of the two primary objectives of RCM: to ensure safety through preventive maintenance actions, and, when safety is not a concern, preserve functionality in the most economical manner. For the power distribution systems facilities, the mission should be considered at the same level as safety.

Reliability centered maintenance (RCM) is a systematic process used to determine what has to be accomplished to ensure that any physical facility is able to meet continuously its designed functions in its current operating context [2]. RCM leads to a maintenance program that focuses preventive maintenance (PM) on specific failure modes likely to occur. Any organization can benefit from RCM if its breakdowns account for more than 20–25% of the total maintenance workload [3]. This paper proposes a practical procedure to develop a cost effective maintenance program for electric power distribution systems. The procedure is mainly based on the reliability centered maintenance (RCM) method that prioritizes maintenance requirement of failure modes, and selects the effective maintenance activity for the critical failure modes. Reliability centered maintenance (RCM) is a decision making process in the selection of a cost-effective maintenance program to improve the reliability, based on determined criticality of failure modes. It prioritizes the maintenance requirement of all failure modes, and selects the effective maintenance activity for the critical failure modes [4] and [5]. In this paper, the RCM based maintenance program is developed using the proposed procedure for an electric utility in ALGERIA.

This paper presents the application of RCM model to optimize the maintenance management of equipment EFS. The main results that we had are recommendations for the re-integration of this maintenance strategy, including an optimal implementation of this approach. This work showed the feasibility of conducting an optimization method of maintenance RCM. This approach is based on the analysis FMECA. The implementation of this approach shows its contribution in reducing maintenance costs. Indeed it can: – Define the requirements of dependability in a precise. – Identify critical functions for the system. – Define the maintenance policy for the system and its components. At the level of system reliability, we have identified the components on which special attention should be paid. The example discussed in the context of this work was developed following a logical and structured analysis. It allowed better control the system under study while identifying weak links and knows the types of maintenance applied to each subsystem and component. In the end, it is a real process of optimizing maintenance costs.