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Reliability Centered Maintenance (RCM) Implementation in Power Transmission Systems

Ghorani, Rahim | 2013

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 45242 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Fotuhi-Firuzabad, Mahmud
  7. Abstract:
  8. The current restructuring trend in power industry emplaces the owners and managers under a great pressure to not only reduce the associated investment costs, but also reasonably cut the operation and maintenance expenses as much as possible, while keeping both the power quality and reliability requirements met. Reliability-Centered Maintenance (RCM) has been proved to be in response to this dilemma in power systems since it has been yet successfully applied in various engineering contexts worldwide. This process is more challenging when it comes to the power transmission systems because of its bulkiness and complex structure. On the other hand, market involvement and its intricate behavior have to be taken into account once deciding on the operation and maintenance of the components. Due to these complexities, RCM has not been thoroughly furnished in power transmission and generation systems yet.
    This thesis transforms the RCM and introduces a practical approach to fit RCM in power transmission systems while preserving the objectives and structures of the original method. The state enumeration method is applied and outage occurrence possibilities and their consequences are evaluated for each credible contingency. To probe the component outage consequences, a realistic market model is implemented which not only assesses the outage consequence to the system different participants, i.e., GenCo. and DisCo., but also determines their conditions in a post contingency state. In the next step, a new fuzzy component model has been introduced which can distinctly illustrate the maintenance and inspection effects and map these effects to the components failure rate. Then, system and component models are combined and a link between maintenance strategy and system cost have been established. In the last step, system and maintenance costs are used in the genetic algorithm and the optimum maintenance strategy is extracted.
    For the sake of demonstration, the presented approach is applied to the IEEE Reliability Test System (RTS), the optimum maintenance strategies are identified, and the obtained results are discussed, through which it can be concluded that the presented approach is well capable of handling large systems and the optimum strategy minimize the long term system costs
  9. Keywords:
  10. Reliability ; Power Market ; Power Transmission System ; Reliability Centered Maintenance

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