Primary and Secondary Frequency Control of Low-Inertia Microgrids with Battery Energy Storage and Intermittent Renewable Energy Resources
| Autor: | S.M.T. Bathaee, Mahmoud Mollayousefi Zadeh, Zakaria Afshar, Gevork B. Gharehpetian |
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| Rok vydání: | 2020 |
| Předmět: |
Frequency response
Steady state (electronics) business.industry Computer science 020209 energy 020208 electrical & electronic engineering Automatic frequency control 02 engineering and technology Power (physics) Renewable energy Control theory Control system 0202 electrical engineering electronic engineering information engineering Voltage droop Diesel generator business |
| Zdroj: | 2020 11th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC). |
| DOI: | 10.1109/pedstc49159.2020.9088470 |
| Popis: | This paper aims to present an accurate and meaningful model of primary and secondary frequency control of low-inertia microgrids (MGs), composed of battery energy storage, wind, and solar units. At the same time, the impact of the virtual synchronous generator (VSG) versus the PQ control method on the frequency variation of MG is discussed. Moreover, it is mathematically proven that power sharing occurs based on the reverse proportion of the droop coefficients of the diesel generator and the battery storage in the primary frequency control. However, when the secondary control loop is applied, the battery storage just provides power during transients and produces no power in the steady state. Simulation results show that the frequency response of the MG improves once the VSG control method is used for the inverters as well as confirming the power sharing ratio, having been mathematically proven. |
| Databáze: | OpenAIRE |
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