Distribution system reliability enhancement using optimal capacitor placement

Etemadi, A. H ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.1049/iet-gtd:20070515
  3. Publisher: 2008
  4. Abstract:
  5. Failure statistics of most utilities indicate that distribution systems make the greatest individual contribution to the unavailability of supply to customers. Optimal capacitor placement in distribution systems has a number of advantages such as reducing losses, improving voltage profile, improving power factor and so on. The conventional objective function of the optimal capacitor placement consists of the total cost of losses and investments. Since capacitors supply reactive loads locally, they improve the load-carrying capability of the lines and therefore play the same role as redundant lines. Thus, optimal capacitor placement can also improve the reliability indices of a distribution system. Therefore two new objective functions are defined here. The first one is defined as the sum of reliability cost and investment cost. The second is defined by adding the reliability cost, cost of losses and investment cost. The latter is a comprehensive objective function which is the resultant of the conventional and reliability-based objective functions. This problem is solved using a particle swarm optimisation-based algorithm. The effectiveness and applicability of the proposed approach are examined using a distribution network. © 2008 The Institution of Engineering and Technology
  6. Keywords:
  7. Capacitors ; Dielectric devices ; Distributed parameter networks ; Distribution of goods ; Electric currents ; Electric equipment ; Electric power distribution ; Electric power factor ; Energy storage ; Finance ; Investments ; Local area networks ; Distribution networks ; Distribution system reliability ; Distribution systems ; Failure statistics ; Individual (PSS 544-7) ; Investment costs ; Load carrying capability ; Objective function (OF) ; Optimal capacitor placement ; Particle swarm optimisation (PSO) ; Power factor (PF) ; Reactive loads ; Reliability costs ; Reliability index (RI) ; Total costs ; Voltage profiles ; Capacitance
  8. Source: IET Generation, Transmission and Distribution ; Volume 2, Issue 5 , 2008 , Pages 621-631 ; 17518687 (ISSN)
  9. URL: https://digital-library.theiet.org/content/journals/10.1049/iet-gtd_20070515