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Reliability of a small power system using solar power and hydro
Department of Electric Power Engineering, Chalmers University of Technology, Gothenburg, Sweden.
STRI AB, Ludvika, Sweden.ORCID-id: 0000-0003-4074-9529
2005 (engelsk)Inngår i: Electric power systems research, ISSN 0378-7796, E-ISSN 1873-2046, Vol. 74, nr 1, s. 119-127Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

This paper studies the availability of the electricity supply when the sources consist of a combination of solar energy and a small hydro installation. Instead of flow-of-river, a small reservoir is used. By not using the hydro energy during sunny periods, the natural flow-of-river fills up the reservoir for later use. A model for global solar radiation is proposed with an astronomical part (deterministic) and a meteorological part (stochastic). The meteorological part is based on a Markov model of the cloud coverage. The solar model does not require solar radiation measurements, just cloud observations. A case study has been performed for Timbuktu (16.75°N, 0.07°W) in which generation availability is simulated for four different cases: solar power only; solar power with storage; solar and hydro power and solar and hydro power with storage. To be able to use exclusively renewable energy sources, a combination of sources is needed to secure the reliability of the supply. Using solar cells in combination with a small reservoir is favorable. Even with a weak flow the affect of the flow on the day time reliability is minor, but great benefits can be found for reliability during low load hours (night time).

sted, utgiver, år, opplag, sider
2005. Vol. 74, nr 1, s. 119-127
HSV kategori
Identifikatorer
URN: urn:nbn:se:ltu:diva-12871DOI: 10.1016/j.epsr.2004.09.009ISI: 000227518400012Scopus ID: 2-s2.0-13844266710Lokal ID: c04c6090-992a-11dd-bc49-000ea68e967bOAI: oai:DiVA.org:ltu-12871DiVA, id: diva2:985822
Merknad

Validerad; 2005; 20081013 (ysko)

Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2022-03-18bibliografisk kontrollert

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Bollen, Math H.J.

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