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Improvement of Power Sharing In Microgrids Consist of Synchronous Generators and Converter Based Distributed Generation Units

Zanganeh, Mohsen |

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 45221 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Mokhtari, Hossein
  7. Abstract:
  8. This dissertation studies the operation of the power sharing system in a micro-grid (MG) which includes a synchronous generator and the converter based distributed generation (DG) units. Increasing advent of MGs and the huge penetration of DGs to the existing power systems require comprehensive studies on the interactions between synchronous generators and converter based DGs for the sharing of power during and after the occurrence of different disturbances such as load changing. Thus, this project discusses existing control methods which can be used to share the power between a synchronous generator and converter based DGs. Then, a new control strategy is proposed in order to enhance the operation of power sharing system when the load changes. To do so, an islanded MG, which includes two converter based DGs and one synchronous generator, is simulated by detailed modeling of different elements of the system in order to provide a proper infrastructural system for further analysis and examination on power sharing strategies. Dynamic equations of the simulated system in addition to state-space models of MG elements are analyzed. Then, eigenvalues of the dynamic equations are obtained for the proposed control strategy. Moreover, the performance of the proposed method is analyzed and compared for two types of MGs (resistive-based and inductance-based MGs). Results of the simulation demonstrate the effectiveness and proper performance of the proposed control strategy of power sharing system
  9. Keywords:
  10. Microgrid ; Power Electronic Converter ; Control Strategy ; Distributed Generation ; Dispersed Generation

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