Abstract
Providing ancillary services such as frequency support and power operating reserve by doubly fed induction gener-ator-based wind turbines has received considerable attention in the recent years, and several auxiliary controllers have been proposed to provide these services. In this paper, small-signal stability of wind turbines equipped with these controllers is assessed in presence of a frequency event and varying wind speed conditions. For this purpose, first, several auxiliary controllers are discussed, and a unified auxiliary controller (UAC) is proposed, which can represent all of these controllers simultaneously. Then, the overall transfer function from the wind speed to the wind turbine rotor speed considering the proposed UAC is derived. Moreover, by neglecting the power grid effects, an approximated first-order transfer function is also obtained. Exhaustive simulations examine the system stability with UAC, under both computer-generated and real wind speed profiles. In addition, simulation results confirm validity of the obtained detailed transfer function and the accuracy of its approximated version for several auxiliary controllers, by selecting appropriate UAC parameters.
| Original language | English |
|---|---|
| Title of host publication | Conference Proceedings - 2020 IEEE International Conference on Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I & CPS Europe) |
| Editors | Zhigniew Leonowicz |
| Place of Publication | Piscataway NJ USA |
| Publisher | IEEE, Institute of Electrical and Electronics Engineers |
| Pages | 1729-1735 |
| Number of pages | 7 |
| ISBN (Electronic) | 9781728174532, 9781728174556 |
| ISBN (Print) | 9781728174563 |
| DOIs | |
| Publication status | Published - 2020 |
| Externally published | Yes |
| Event | IEEE International Conference on Environment and Electrical Engineering and IEEE Industrial and Commercial Power Systems Europe 2020 - Madrid, Spain Duration: 9 Jun 2020 → 12 Jun 2020 https://ieeexplore.ieee.org/xpl/conhome/9146477/proceeding?isnumber=9160488&rowsPerPage=100&pageNumber=4 (Proceedings) |
Conference
| Conference | IEEE International Conference on Environment and Electrical Engineering and IEEE Industrial and Commercial Power Systems Europe 2020 |
|---|---|
| Abbreviated title | EEEIC / I&CPS Europe 2020 |
| Country/Territory | Spain |
| City | Madrid |
| Period | 9/06/20 → 12/06/20 |
| Internet address |
Keywords
- Deloading controller
- doubly-fed induction generator (DFIG)
- unified auxiliary controller
- virtual inertial controller (VIC)
- wind speed variation
- wind turbine
