Active Power Regulation in Hybrid Power Plants (PV, Wind and Batteries)
Authors
Louka, Thekla ; Chatterjee, Debashree
Term
4. term
Education
Publication year
2024
Submitted on
2024-05-30
Pages
81
Abstract
Andelen af inverterbaserede ressourcer (IBR'er) som solceller (PV) og vindmøller (WT) vokser og gør elproduktionen mere variabel, hvilket kan skabe ustabilitet i elnettets frekvens og drift. Hybride kraftværker (HPP'er), der kombinerer sol, vind og batteri-energilagringssystemer (BESS), kan afhjælpe dette ved at levere hurtig frekvensstøtte og andre systemydelser gennem markedet for Ancillary Services (AS). Dette projekt undersøger, hvordan en HPP med PV, WT og BESS kan styre aktiv effekt (justere den leverede effekt) i forskellige scenarier. Først analyseres, hvordan batterier i forskellige størrelser kan udligne forskelle mellem prognosticeret og faktisk produktion. Dernæst vurderes, hvordan BESS kan levere frekvens-ydelser, når systemfrekvensen afviger fra normalområdet. Til sidst belyses de økonomiske konsekvenser, når spotprisen bliver negativ (elprisen midlertidigt er under nul). Arbejdet giver et overblik over, hvilke ydelser der kan leveres med forskellige batteristørrelser, og hvor stor betydning markedsforhold har.
Inverter-based resources (IBRs) such as solar photovoltaics (PV) and wind turbines (WT) are taking a larger share of the energy mix, making power generation more variable and challenging grid frequency and stability. Hybrid power plants (HPPs) that combine solar, wind, and battery energy storage systems (BESS) can help by providing fast frequency support and other ancillary services (AS). This thesis examines how an HPP with PV, WT, and BESS can provide active power control (adjusting output) under different operating scenarios. First, it analyzes how batteries of different sizes can compensate for gaps between forecasted and actual production. Next, it assesses how the BESS can deliver frequency services when the system frequency deviates from its nominal value. Finally, it explores the economic effects of negative spot prices (periods when electricity prices fall below zero). The work offers an overview of which services are feasible with different battery sizes and how market conditions influence their value.
[This summary has been rewritten with the help of AI based on the project's original abstract]
Keywords
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