Response of a grid forming wind farm to system events, and the impact of external and internal damping
| Autor: | Isaac Gutierrez, Thyge Knueppel, Andrew Roscoe, Juan-Carlos Perez Campion, Paul Brogan, Ricardo Moreira da Silva, Douglas Elliott |
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| Rok vydání: | 2020 |
| Předmět: |
Wind power
Renewable Energy Sustainability and the Environment business.industry Combined cycle 020209 energy media_common.quotation_subject 020208 electrical & electronic engineering Reactance Mode (statistics) 02 engineering and technology Converters Inertia Power (physics) law.invention Renewable energy Control theory law 0202 electrical engineering electronic engineering information engineering Environmental science business media_common |
| Zdroj: | IET Renewable Power Generation. 14:3908-3917 |
| ISSN: | 1752-1424 1752-1416 |
| Popis: | Following from smaller-scale investigations of grid-forming converter control applied to wind turbines in 2017–2018, this study describes a much larger trial involving an entire wind farm, owned and operated by ScottishPower Renewables. To the authors’ knowledge, this was the first UK converter-connected wind farm to operate in grid-forming mode, and the largest in the world to date. The 23-turbine, 69 MW farm ran in the grid-forming mode for 6 weeks, exploring inertia contributions between H = 0.2 s and H = 8 s. A number of unscheduled frequency disturbances occurred due to interconnector, combined cycle gas turbine (CCGT) and other trips, to which un-curtailed turbines were able to respond. In addition, several deliberate tests were carried out. The turbines were able to provide a stable and appropriate response at relatively high inertia levels to the frequency events commonly occurring today. The captured responses stimulated a debate as to whether external damping power might be required in a grid-forming converter, or whether internal damping is sufficient to allow stable and robust power-sharing with parallel devices in all grid event scenarios. Analysis in this study suggests that, practically, internal damping is probably appropriate, and that any deficiency in external damping power can be more than mitigated by reactance and/or droop-slope response-time management in the grid-forming converters. |
| Databáze: | OpenAIRE |
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