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FEASIBILITY OF USING LITHIUM-ION BATTERIES FOR LOAD SHIFTING: A thesis study that analyze the performance and economic feasibilities for an air compressor with a battery system
Mälardalen University, School of Business, Society and Engineering. 1995.
Mälardalen University, School of Business, Society and Engineering.
2019 (English)Independent thesis Basic level (professional degree), 180 HE creditsStudent thesis
Abstract [en]

The electricity price changes depending on the time of the day in most countries. In Sweden there is a spot price that changes every hour while China uses Time of Use (ToU) tariff. To avoid the most expensive hours this degree project investigates the feasibility of using lithium- ion batteries to shift the load of an industrial air compressor. The Depth of Discharge and the State of Charge (SoC) for the battery are analyzed to find the optimal use of the battery. Through simulations in MATLAB the degradation-curve and State of Charge were analyzed, which was further used for economics analysis. The feasibility of the system is evaluated by using payback time and Net Present Value (NPV). Results show that a battery has a slightly longer lifetime when it is working in a SoC of 50-70%, but a larger SoC is more profitable from the perspective of NPV. For the SoC of 0-100%, the NPV is about ~9683 US$. Compared to Sweden, using batteries to shift load is more profitable in China, which is mainly due to the high electricity prices. For the same air compressor, the payback time is 5 and 15 years for the investment of batteries in China and Sweden respectively.

Place, publisher, year, edition, pages
2019. , p. 40
Keywords [en]
Battery, energy demand, load shifting, electricity price, state of charge, degradation
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-43731OAI: oai:DiVA.org:mdh-43731DiVA, id: diva2:1321894
Subject / course
Energy Engineering
Presentation
2019-06-03, R1-151, Högskoleplan 2, Västerås, 14:20 (English)
Supervisors
Examiners
Available from: 2019-06-18 Created: 2019-06-10 Last updated: 2019-06-18Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
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  • asciidoc
  • rtf