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Comparative study of hydrogen storage and battery storage in gridconnected photovoltaic system: Storage sizing and rule-basedoperation
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.ORCID iD: 0000-0001-8271-7512
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology.
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
2017 (English)In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118Article in journal (Refereed) In press
Abstract [en]

The paper studies grid-connected photovoltaic (PV)-hydrogen/battery systems. The storage componentcapacities and the rule-based operation strategy parameters are simultaneously optimized by theGenetic Algorithm. Three operation strategies for the hydrogen storage, namely conventional operationstrategy, peak shaving strategy and hybrid operation strategy, are compared under two scenarios basedon the pessimistic and optimistic costs. The results indicate that the hybrid operation strategy, whichcombines the conventional operation strategy and the peak shaving strategy, is advantageous in achievinghigher Net Present Value (NPV) and Self Sufficiency Ratio (SSR). Hydrogen storage is further comparedwith battery storage. Under the pessimistic cost scenario, hydrogen storage results in poorer performancein both SSR and NPV. While under the optimistic cost scenario, hydrogen storage achieves higher NPV.Moreover, when taking into account the grid power fluctuation, hydrogen storage achieves better performancein all three optimization objectives, which are NPV, SSR and GI (Grid Indicator).

Place, publisher, year, edition, pages
Elsevier, 2017.
Keyword [en]
Photovoltaic; Hydrogen storage; Battery storage; Buildings; Operation strategy; Genetic algorithm
National Category
Energy Engineering
Research subject
Energy Technology
Identifiers
URN: urn:nbn:se:kth:diva-205206DOI: 10.1016/j.apenergy.2017.03.123ISI: 000403416300031Scopus ID: 2-s2.0-85017190863OAI: oai:DiVA.org:kth-205206DiVA: diva2:1087735
Note

QC 20170410

Available from: 2017-04-10 Created: 2017-04-10 Last updated: 2017-06-30Bibliographically approved
In thesis
1. Integration of Battery and Hydrogen Storage with a Grid-Connected Photovoltaic System in Buildings
Open this publication in new window or tab >>Integration of Battery and Hydrogen Storage with a Grid-Connected Photovoltaic System in Buildings
2017 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

    The integration of Photovoltaic (PV) with buildings changes the previous electricity consumers into prosumers. The reduced PV subsidies and the grid stable operation requirements are pushing prosumers from direct exportation to self-consumption of the produced electricity. Electricity storage increases the self-consumption, while comes with higher investment. During the system planning stage, the benefits of storage should be clarified to prosumers. The storage type, the storage capacity and the system operation strategy should be determined at the same time.

    This thesis dealt with a grid-connected PV-storage system and proposed an optimization method, which simultaneously determined the storage capacity and rule-based operation strategy parameters. This method eliminated the necessity of forecasting and could be easily implemented. A typical residential building in Sweden was taken as a case study. Different operation strategies as well as two storage technologies – battery storage and hydrogen storage – were compared.

    For the battery storage system, the proposed battery hybrid operation strategy, which carries out the conventional operation strategy during warm months and the peak shaving strategy during cold months, provides the best performance in Self Sufficiency Ratio (SSR) and Net Present Value (NPV). For the hydrogen storage system, the hydrogen hybrid operation strategy outperforms other studied operation strategies under different scenarios, which have optimistic or pessimistic cost assumptions of the hydrogen storage system.

    The comparison between hydrogen storage and battery storage suggests that battery storage has much better performance in SSR and NPV under the pessimistic cost scenario. Under the optimistic cost scenario, battery storage and hydrogen storage achieve comparable performance in SSR and NPV. However, hydrogen storage is more favorable when considering reducing the prosumer’s negative impact on the grid.

Place, publisher, year, edition, pages
KTH Royal Institute of Technology, 2017. 43 p.
Series
TRITA-CHE-Report, ISSN 1654-1081 ; 2017:25
Keyword
Photovoltaic, Grid, Building, Battery, Hydrogen Storage, Operation Strategy, Optimization
National Category
Chemical Engineering
Research subject
Energy Technology
Identifiers
urn:nbn:se:kth:diva-205211 (URN)978-91-7729-355-2 (ISBN)
Presentation
2017-05-15, E36, KTH, Lindstedtsvägen 3, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

QC 20170412

Available from: 2017-04-12 Created: 2017-04-11 Last updated: 2017-06-15Bibliographically approved
2.
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