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Evaluation of substation reliability indices and outage cost based on fuzzy arithmetic

Hatami, A. R ; Sharif University of Technology | 2006

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  1. Type of Document: Article
  2. DOI: 10.1109/IEEEGCC.2006.5686210
  3. Publisher: 2006
  4. Abstract:
  5. Substations and switching stations are critical segments in an electric power system. Their impacts on system operation and the consequential effects of their components failure are usually more dominant in overall power system reliability. There is always a degree of uncertainty in the practical input data used in reliability analysis. This paper presents a conceptual possibilistic approach using fuzzy set theory to manage the uncertainties in the reliability input data such as failure rate, repair time and operation of protective devices. Suitable fuzzy numbers are proposed for components reliability data. Load of feeders are also represented by fuzzy numbers and their impact on ENS (Energy Not Supplied) and OC (Outage Cost) are examined. The proposed approach is applied to a practical 230/63 KV substation and the results are presented
  6. Keywords:
  7. Critical segments ; Degree of uncertainty ; Energy not supplied ; Failure rate ; Fuzzy arithmetics ; Fuzzy numbers ; Input datas ; Outage cost ; Possibilistic approach ; Possibility distributions ; Power system reliability ; Protective devices ; Reliability data ; Substation reliability ; Switching stations ; System operation ; Costs ; Electric substations ; Fuzzy logic ; Fuzzy rules ; Fuzzy set theory ; Fuzzy sets ; Input output programs ; Quality assurance ; Reliability theory ; Uncertainty analysis ; Reliability analysis
  8. Source: 2006 IEEE GCC Conference, GCC 2006, Manama, 20 March 2006 through 22 March 2006 ; 2006 ; 9780780395909 (ISBN)
  9. URL: https://ieeexplore.ieee.org/document/5686210