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Determination of Maximum and Optimal Penetration Level of Distributed Generation in Distributed Systems

Seydali Seyf Abad, Mohammad | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 47490 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Parniani, Mostafa
  7. Abstract:
  8. Nowadays, development of renewable electricity generation technologies, the advent of small efficient generators and increasing number of grid-connected consumers, have caused increasing interest in energy production next to the consumers locations. Distributed generation (DG) is often defined as small-scale generators that produce several kilowatts to tens of megawatts of electricity. One primary reason for using DG is its potential to reduce power losses in transmission and distribution networks. Several loss reduction methods such as capacitor placement, network reconfiguration and load management are used in distribution systems. Employing DG results in the highest loss reduction and improved voltage profile as well as improving system reliability and security. To realize these benefits, network planners and operators are facing challenges by DG penetration in distribution systems which are not conventionally designed for connection of DGs. High DG penetration can cause technical problems such as steady state over voltage, lines overloading, malfunction of protection and power quality problems. Most of these issues depend on the penetration level of distributed generations, and increasing the penetration level results in more acute problems. As a result, these questions arise: what is the allowable penetration level? and can this limit be increased? Besides, it might be useful to determine the optimal penetration level. The objectives of this work are to investigate technical problems due to DG penetration, and to obtain maximum allowable DG penetration based on different constraints. A planning scheme is also proposed for DG penetration in radial distribution systems that minimizes power delivery loss
  9. Keywords:
  10. Dispersed Generation ; Losses ; Optimal Placement ; Distribution System ; Loss Minimization ; Maximum Penetration Level

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