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Power System Load Frequency Control Considering Renewable Energy Sources

Toulabi, Mohammad Reza | 2012

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 43361 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Ranjbar, Ali Mohammad
  7. Abstract:
  8. Power system frequency regulation entitled load frequency control (LFC) has been one of the important control problems in electric power system design and operation. Off-normal frequency can directly impact on power system operation and system reliability. A large frequency deviation can damage equipment, degrade load performance, cause the transmission lines to be overloaded and can interfere with system protection schemes, ultimately leading to an unstable condition for the power system . On the other hand, the increasing need for electrical energy in the 21st century, as well as limited fossil fuel reserves and the increasing concerns with environmental issues for the reduction of carbon dioxide and other greenhouse gasses, call for fast development in the area of renewable energy sources (RESs). These energies due to their low penetration do not enter in the load frequency control model or they modeled as the negative loads of the power system. Regarding their fast development necessitates their dynamic participation in the power system frequency regulation issue. The goal of this thesis is to show that the wind productions can dynamically participate in the power system LFC task. To show this, first, the wind farm macromodel and its control strategy are explained. Next, this model is added to the conventional LFC structure and some scenarios based on the wind farm participation factor is proposed. Finally, robust performance of the power system between these scenarios is insured using Edge theorem and practical implementation of these scenarios is proved.

  9. Keywords:
  10. New Energies ; Robust Control ; Wind Farms ; Load-Frequency Control ; Macro Model

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