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- Type of Document: M.Sc. Thesis
- Language: Farsi
- Document No: 51557 (05)
- University: Sharif University of Technology
- Department: Electrical Engineering
- Advisor(s): Parniani, Mostafa
- Abstract:
- Considering the continuous growth of renewable energy sources in electric grids, the importance of utilizing simple, generic, and upgradable models for different network stability studies is increasing. In recent years, generic and standard wind turbine models for transient and short-term frequency and voltage stability studies have been developed. In this regard, researchers are still working on promotion of the generic models, especially to expand them for unbalanced transient studies, improve the transient response, and include inertia response. In this thesis, different methods for generic modeling of wind turbines are surveyed and the development procedure of WECC and IEC generic model are explained. According to the main principle of generic wind turbine blocks modeling, new blocks for simulating low voltage ride through behavior of DFIG machine during the symmetrical and unsymmetrical short circuit faults are proposed and compared both with former generic and more detailed models. With a view on grid code requirements, a novel inertial response block is presented and some changes for other main standard blocks are suggested. At last, the generic IEC model is extended to off-shore wind farms with HVDC connection. Then, the response of the proposed generic model is compared with the existing generic as well as detailed ones in various studies. Satisfactory results, which match perfectly with the response of detailed models, are obtained in all studies
- Keywords:
- Wind Turbine ; Offshore Wind Farms ; Stability Analysis ; Inertial Response ; Standard Model ; Renewable Energy Resources
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