Analysis of power system inertia estimation in high wind power plant integration scenarios
| Autor: | Ángel Molina-García, Antonio Vigueras-Rodríguez, Ana Fernández-Guillamón |
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| Rok vydání: | 2020 |
| Předmět: |
Wind power
Renewable Energy Sustainability and the Environment business.industry Computer science 020209 energy media_common.quotation_subject 020208 electrical & electronic engineering Automatic frequency control 02 engineering and technology Systems and Control (eess.SY) Grid Inertia Electrical Engineering and Systems Science - Systems and Control Renewable energy Power (physics) Electric power system Control theory Frequency grid 0202 electrical engineering electronic engineering information engineering FOS: Electrical engineering electronic engineering information engineering business media_common |
| DOI: | 10.48550/arxiv.2005.02091 |
| Popis: | Nowadays, power system inertia is changing as a consequence of replacing conventional units by renewable energy sources, mainly wind and photovoltaic power plants. This fact affects significantly the grid frequency response under power imbalances. As a result, new frequency control strategies for renewable plants are being developed to emulate the behaviour of conventional power plants under such contingencies. These approaches are usually called `virtual inertia emulation techniques'. In this study, an analysis of power system inertia estimation from frequency excursions is carried out by considering different inertia estimation methodologies, discussing the applicability and coherence of these methodologies under the new supply-side circumstances. The modelled power system involves conventional units and wind power plants including wind frequency control strategies in line with current mix generation scenarios. Results show that all methodologies considered provide an accurate result to estimate the equivalent inertia based on rotational generation units directly connected to the grid. However, significant discrepancies are found when frequency control strategies are included in wind power plants decoupled from the grid. In this way, authors consider that it is necessary to define alternative inertia estimation methodologies by including virtual inertia emulation. Extensive discussion and results are also provided in this study. |
| Databáze: | OpenAIRE |
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