Grid Services and Stress Reduction with a Flywheel in the Rotor of a Wind Turbine
Wind power penetration increases in most grids and the sizes of wind turbines increase. This leads to increasingly tough requirements, which are imposed on wind turbines, both from the grid as well as from economics. Some of these partially contradictory requirements can only be satisfied with addit...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-04-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/14/9/2556 |
| _version_ | 1797535815404879872 |
|---|---|
| author | Clemens Jauch |
| author_facet | Clemens Jauch |
| author_sort | Clemens Jauch |
| collection | DOAJ |
| description | Wind power penetration increases in most grids and the sizes of wind turbines increase. This leads to increasingly tough requirements, which are imposed on wind turbines, both from the grid as well as from economics. Some of these partially contradictory requirements can only be satisfied with additional control mechanisms in the wind turbines. In this paper, such a mechanism, i.e., a hydraulic–pneumatic flywheel system in the rotor of a wind turbine, is discussed. This flywheel system supports a wind turbine in providing grid services such as steadying the power infeed, fast frequency response, continuous inertia provision, power system stabilization, and low voltage ride-through. In addition, it can help mitigate the stress on the mechanical structure of a wind turbine, which results from varying operating points, imbalances in the rotor, gravitation that acts on the blades, in-plane vibrations, and emergency braking. The study presented in this paper is based on simulations of a publicly available reference wind turbine. Both the rotor blade design as well as the design of the flywheel system are as previously published. It is discussed how the aforementioned grid services and the stress reduction mechanisms can be combined. Finally, it is concluded that such a flywheel system broadens the range of control mechanisms of a wind turbine substantially, which is beneficial for the grid as well as for the wind turbine itself. |
| first_indexed | 2024-03-10T11:50:41Z |
| format | Article |
| id | doaj.art-f4dec21435b8455b8a80c0f443818c0a |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T11:50:41Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-f4dec21435b8455b8a80c0f443818c0a2023-11-21T17:47:27ZengMDPI AGEnergies1996-10732021-04-01149255610.3390/en14092556Grid Services and Stress Reduction with a Flywheel in the Rotor of a Wind TurbineClemens Jauch0Wind Energy Technology Institute (WETI), Flensburg University of Applied Sciences, 24943 Flensburg, GermanyWind power penetration increases in most grids and the sizes of wind turbines increase. This leads to increasingly tough requirements, which are imposed on wind turbines, both from the grid as well as from economics. Some of these partially contradictory requirements can only be satisfied with additional control mechanisms in the wind turbines. In this paper, such a mechanism, i.e., a hydraulic–pneumatic flywheel system in the rotor of a wind turbine, is discussed. This flywheel system supports a wind turbine in providing grid services such as steadying the power infeed, fast frequency response, continuous inertia provision, power system stabilization, and low voltage ride-through. In addition, it can help mitigate the stress on the mechanical structure of a wind turbine, which results from varying operating points, imbalances in the rotor, gravitation that acts on the blades, in-plane vibrations, and emergency braking. The study presented in this paper is based on simulations of a publicly available reference wind turbine. Both the rotor blade design as well as the design of the flywheel system are as previously published. It is discussed how the aforementioned grid services and the stress reduction mechanisms can be combined. Finally, it is concluded that such a flywheel system broadens the range of control mechanisms of a wind turbine substantially, which is beneficial for the grid as well as for the wind turbine itself.https://www.mdpi.com/1996-1073/14/9/2556flywheelgrid frequencygrid serviceinertialow voltage ride throughmechanical stress |
| spellingShingle | Clemens Jauch Grid Services and Stress Reduction with a Flywheel in the Rotor of a Wind Turbine Energies flywheel grid frequency grid service inertia low voltage ride through mechanical stress |
| title | Grid Services and Stress Reduction with a Flywheel in the Rotor of a Wind Turbine |
| title_full | Grid Services and Stress Reduction with a Flywheel in the Rotor of a Wind Turbine |
| title_fullStr | Grid Services and Stress Reduction with a Flywheel in the Rotor of a Wind Turbine |
| title_full_unstemmed | Grid Services and Stress Reduction with a Flywheel in the Rotor of a Wind Turbine |
| title_short | Grid Services and Stress Reduction with a Flywheel in the Rotor of a Wind Turbine |
| title_sort | grid services and stress reduction with a flywheel in the rotor of a wind turbine |
| topic | flywheel grid frequency grid service inertia low voltage ride through mechanical stress |
| url | https://www.mdpi.com/1996-1073/14/9/2556 |
| work_keys_str_mv | AT clemensjauch gridservicesandstressreductionwithaflywheelintherotorofawindturbine |