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Optimal Maintenance Scheduling of Power System Generating Units Considering Reliability Centered Maintenance Requirements

Pourahmadi, Farzaneh | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 46962 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Fotuhi Firuzabad, Mahmud
  7. Abstract:
  8. In the past several decades, with the increasing evolution of electricity markets, maintenance philosophy has gradually changed, and maintenance process plays a crucial role on the profitability and effectiveness of companies. Therefore, this leads managers to use modern strategies that their performance has been proved in various industries and therefore, traditional strategies have lost their effectiveness. Reliability-Centered Maintenance (RCM) is one of the most successful strategies wherein the maintenance process of system components is linked to improvements in the system reliability and profit of companies. RCM has not been thoroughly furnished in generation system yet. This thesis offers a comprehensive framework and a step-by-step implementation process for RCM in power generation systems. In the proposed approach, which is classified into the three main stages of data collection, reliability modeling and optimal maintenance planning, and data evaluation and documentation, the reliability of the power system generating units from two perspectives of plant aging mechanism and system wide is evaluated. In order to model the power generating units and to accommodate the effects of repair and maintenance adjustment factor on the reliability of generating units, the sequential Monte Carlo simulation method using stochastic point process modeling is introduced. From the perspective of sytem wide, an efficient method to assess the component criticality on the system overall reliability performance is proposed. The proposed approach utilizes a solution concept of game theory and fairly identifies the contribution of each generating unit on the overall reliability performance of the system. Then the generating unit situation is forcasted and the failure penalty coefficient is obtaind, and as a result a link among maintenance strategy, system cost and producer’s benefit is established and the optimum maintenance strategy is extracted by using the PSO algorithm. Numerical examples on a four-unit producer are utilized to demonstrate the effectiveness of the proposed scheme
  9. Keywords:
  10. Reliability ; Power Market ; Optimization ; Critical Component ; Reliability Centered Maintenance ; Power Generation

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