2012 ©
             Publication
Journal Publication
Title of Article Reliability Assessment and Improvement of Electrical Distribution Systems by Using Multinomial Monte Carlo Simulations and a Component Risk Priority Index 
Date of Acceptance 11 October 2022 
Journal
     Title of Journal IEEE Access 
     Standard SCOPUS 
     Institute of Journal the IEEE (Institute of Electrical and Electronics Engineers) 
     ISBN/ISSN 2169-3536 
     Volume 10 
     Issue  
     Month October
     Year of Publication 2022 
     Page 111923 - 111935 
     Abstract In this paper, a method of assessing and improving the reliability of power distribution systems based on Monte Carlo simulation and a novel risk priority index is proposed. The initialization of the assessment process is carried out by using Multinomial Monte Carlo simulation with a nonsequential technique to assess system reliability in the form of SAIFI and SAIDI indices. Then, the novel per-time-based component reliability indices representing the insights obtained from root-cause analysis for each component in the system are evaluated to make suitable decisions on improvement measures. The proposed indices are derived as a component risk priority index based on the principle of the failure mode and an effect analysis to prioritize and select the implementation points by the Pareto principle. By applying the proposed method, a reliability improvement should be achieved at the correct point with minimal operations. In addition, the proposed method can be used to study the effect of uncertainty regarding some device operations on the system reliability. To verify the performance of the proposed method and demonstrate its application, three case studies were performed on the IEEE RBTS Bus-2 test system. From the first case study, the results of the proposed assessment process were validated by comparison with a standard benchmark. The second case study showed the performance of applying the entire process to improve system reliability, and the results showed that system reliability can be improved significantly. The third case study was performed to determine the effect of uncertainty in protective device operations. The results of the third case showed that there was a significant decrease in overall reliability in terms of a higher level of power outages, while the performance of the protective components was slightly reduced. 
     Keyword Reliability , Indexes , Power system reliability , Monte Carlo methods , Data models , Predictive models , RIsk management 
Author
637040029-9 Mr. YUTTANA DECHGUMMARN [Main Author]
Engineering Doctoral Degree

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