uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • 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
  • text
  • asciidoc
  • rtf
Self-consumption enhancement of residential photovoltaics with battery storage and electric vehicles in communities
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics. (Built Environment Energy Systems Group (BEESG))ORCID iD: 0000-0001-6745-3635
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics. (Built Environment Energy Systems Group (BEESG))
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics. (Built Environment Energy Systems Group (BEESG))
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics. (Built Environment Energy Systems Group (BEESG))
2015 (English)In: Proceedings of the eceee 2015 Summer Study on energy efficiency, 1–6 June 2015, Presqu’île de Giens, Toulon/Hyères, France, 2015, 991-1002 p.Conference paper, Published paper (Refereed)
Abstract [en]

Grid-connected photovoltaic (PV) systems have been dependent on supporting schemes to be competitive with conventional electricity generation. Selling prices of PV power production are now lower than buying prices in several countries, making it profitable to match generation with household consumption. Self-consumption, calculated as in situ instantaneous consumption of PV power production relative to total power production, can be used to improve the profitability with higher buying than selling prices of electricity. Another measure, self-sufficiency, similar to self-consumption but calculated relative to the yearly consumption, can also be used. Battery storage and electric vehicle (EV) home-charging are interesting alternatives to increase the self-consumption, since the PV power production can be stored for later use. This study uses high-resolution consumption data for 21 single-family houses in Sweden and irradiance data for the year 2008 to examine the potential for battery storage and EV home-charging for communities of single-family houses with PV systems. The aim is to compare how self-consumption and self-sufficiency are affected by individual power grid connections for all households versus one shared grid connection for the whole community. These scenarios are combined with battery storage and EV charging (individual versus centralized). It is found that total consumption profiles level out when several houses are connected together, the self-consumption increases from 52 to 71 % and the self-sufficiency from 12 to 17 %. The size of a centralized storage can be reduced compared to the aggregated size of storages in every house to reach the same level of self-consumption. The potential for EV charging is limited due to mismatch between irradiance and charging patterns. The extra revenue from increased self-consumption with battery storage is too low for all the cases to justify an investment in batteries since the prices are still too high. With dedicated support schemes, higher buying prices of electricity and cheaper battery, PV-battery systems can still be an interesting solution in countries with high solar irradiance throughout the year.

Place, publisher, year, edition, pages
2015. 991-1002 p.
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:uu:diva-254455ISBN: 978-91-980482-6-1 (print)OAI: oai:DiVA.org:uu-254455DiVA: diva2:818303
Conference
eceee 2015 Summer Study on energy efficiency, 1–6 June 2015, Presqu’île de Giens, Toulon/Hyères, France
Projects
Småskalig solel i byggnader - kraft för förändring i energisystem och vardagslivet
Funder
Swedish Energy Agency
Available from: 2015-06-08 Created: 2015-06-08 Last updated: 2016-01-12
In thesis
1. Solar Variability Assessment and Grid Integration: Methodology Development and Case Studies
Open this publication in new window or tab >>Solar Variability Assessment and Grid Integration: Methodology Development and Case Studies
2015 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

During the 21st century there has been a tremendous increase in grid-connected photovoltaic (PV) capacity globally, due to falling prices and introduction of economic incentives. PV systems are in most cases small-scale, installed on residential dwellings, which means that the power production is widely distributed and close to the end-user of electricity. In this licentiate thesis the distributed PV in the built environment is studied. A methodology for assessing short-term (sub-minute) solar variability was developed, which in the continuation of this PhD project could be used to study the aggregated impact on the local distribution grid from dispersed PV systems. In order to identify potential locations for PV systems in a future scenario, methodology was developed to assess the rooftop topography on both local level using LiDAR data and nationally through building statistics. Impacts on the distribution grid were investigated through a case study on a rural municipality in Sweden. It was found that the hosting capacity, i.e. the amount of PV power generation that can be integrated in the grid without exceeding certain power quality measures, is high, at least 30%. However, the hosting capacity on transmission level needs further investigation. As a first step a methodology was developed in order to model scenarios for hourly solar power generation, aggregated over wide areas, here applied to the whole Swedish power system. The model showed high correlation compared to PV power production reported to the Swedish transmission system operator (TSO). Furthermore, it was used to model scenarios of high PV penetration in Sweden, which give some indications on the impact on the power system, in terms of higher frequency of extreme ramps.

Place, publisher, year, edition, pages
Uppsala: Uppsala University, Department of Engineering Sciences, 2015. 55 p.
Keyword
Solar variability, Photovoltaics, Grid integration, GIS, Distributed generation
National Category
Energy Systems
Research subject
Engineering Science
Identifiers
urn:nbn:se:uu:diva-265451 (URN)
Presentation
2015-11-25, ITC 1111, Lägerhyddsvägen 1, Uppsala, 14:00 (English)
Opponent
Supervisors
Funder
StandUp
Available from: 2016-01-12 Created: 2015-10-29 Last updated: 2016-01-12Bibliographically approved

Open Access in DiVA

No full text

Authority records BETA

Luthander, RasmusLingfors, DavidMunkhammar, JoakimWidén, Joakim

Search in DiVA

By author/editor
Luthander, RasmusLingfors, DavidMunkhammar, JoakimWidén, Joakim
By organisation
Solid State Physics
Energy Engineering

Search outside of DiVA

GoogleGoogle Scholar

isbn
urn-nbn

Altmetric score

isbn
urn-nbn
Total: 1141 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • 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
  • text
  • asciidoc
  • rtf