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- Anttila, SaraUppsala universitet,Institutionen för elektroteknik (författare)
Power control strategies for renewable energy systems : The inverter's role in future power systems
- BokEngelska2020
Förlag, utgivningsår, omfång ...
- Uppsala :Department of Electrical Engineering,2020
- 49 s.
- printrdacarrier
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- LIBRIS-ID:oai:DiVA.org:uu-421009
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-421009URI
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- Språk:engelska
- Sammanfattning på:engelska
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- Connecting more non-dispatchable renewable energy sources (RESs) will result in a higher power variability and a lower system inertia when the synchronous generators are replaced by inverter-connected RES. Inverter control can be divided in three categories: grid-following, grid-forming (GFM) and grid-supporting. A literature review of inverter control strategies identifies the GFM control as having an important role in maintaining system stability assuming near 100 % inverter-connected RES. Critical aspects of the inverter control are also identified; the control need to function autonomously, be able to remain connected during transient events and be insensitive to grid topology.Combining various RES is also shown to improve system stability. The combination of RES that has been investigated in most studies is wind, solar and wave power. Wave power is still a young technology compared to solar and wind power. It generates higher power fluctuations over short time periods with a significant difference between average and maximum power. Additionally, wave power parks (WPPs) are often connected via long cables which contribute reactive power to the grid. These challenges has to be considered to maintain system stability and power quality when connecting a WPP to the grid.In a Power Hardware-In-the-Loop study of how a WPP affects the power quality at the point of common coupling (PCC), it is found that the impact is highest for WPPs with fewer generators as the variability is reduced when several generators are excited at different times. Energy storage is also shown to have a significant impact on the power quality at the PCC with reduced flicker, total harmonic distortion and power and voltage variability. A simulation study also shows the positive impact of energy storage on power variability and the role of inverter control in reactive power compensation.
Ämnesord och genrebeteckningar
- TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Annan elektroteknik och elektronik hsv//swe
- ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Other Electrical Engineering, Electronic Engineering, Information Engineering hsv//eng
- Renewable energy systems
- Grid-connection
- Inverter
- Power control
- Engineering Science with specialization in Science of Electricity
- Teknisk fysik med inriktning mot elektricitetslära
Biuppslag (personer, institutioner, konferenser, titlar ...)
- Boström, Cecilia (preses)
- Eriksson, Sandra (preses)
- Max, Lena,LektorHögskolan väst (opponent)
- Uppsala universitetInstitutionen för elektroteknik (creator_code:org_t)
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