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Load response of biogas CHP systems in a power grid

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Title: Load response of biogas CHP systems in a power grid
Authors: Ishikawa, Shiho Browse this author
Connell, Nicholas O. Browse this author
Lechner, Raphael Browse this author
Hara, Ryoichi Browse this author →KAKEN DB
Kita, Hiroyuki Browse this author
Brautsch, Markus Browse this author
Keywords: Biogas
Combined heat and power (CHP)
Load response
Power control
Issue Date: Jun-2021
Publisher: Elsevier
Journal Title: Renewable energy
Volume: 170
Start Page: 12
End Page: 26
Publisher DOI: 10.1016/j.renene.2021.01.120
Abstract: Renewable energy (RE) sources like wind and solar power have been introduced to power systems to make the energy market more sustainable and environmentally friendly. For this reason, the supply demand mismatch in power systems is more severe than before, in terms of both frequency and magnitude. It is therefore necessary to reinforce the capability to make supply and demand adjustments in power grids. Here, we clarified the dynamic characteristics of biogas plants with combined heat and power (CHP) systems, that represent controllable RE power sources, and evaluated the possibility of using these systems as a new resource for supply-demand adjustments in the power grid. Additionally, the properties of the exhaust gas from the investigated CHP engines were measured as an environmental evaluation. We considered real-world biogas CHP systems operating in both Germany and Japan. Based on the results, biogas CHP systems have the potential to contribute to a long-term power equivalent adjustment such as tertiary control reserve (TCR) in Germany. However, these systems required several minutes between starting and stopping. Furthermore, increased emissions of methane and formaldehyde were measured when the CHP systems were starting up. We found that an operation with as few starts and stops as possible is therefore desirable.
Rights: © <2021>. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 石川 志保

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