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Unlocking the flexibility of combined heat and power for frequency response by coordinative control with batteries

Xu, Xiandong, Ming, Wenlong, Zhou, Yue and Wu, Jianzhong 2020. Unlocking the flexibility of combined heat and power for frequency response by coordinative control with batteries. IEEE Transactions on Industrial Informatics 10.1109/TII.2020.3012495

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Abstract

Owners of combined heat and power (CHP), e.g., industrial manufacturers, are motivated to provide frequency response to power grids due to clear financial benefits. Yet, the slow response speed of CHP limits its capability in providing such services. Moreover, frequent adjustments would cause a faster lifetime reduction of CHP and rapid pressure fluctuation in the gas network. To further unlock the flexibility of CHP, this paper integrates a battery unit with CHP via a power electronic interface. A filter-based coordinative controller is designed for smoothing short-term fluctuations in CHP outputs. Based on the filter parameters and frequency response requirements, the minimum required capacity of the battery is identified. The results show that the proposed system enhances the capability of CHP for frequency response and mitigates the associated adverse effects on the gas network. The required capacity of the battery is economically feasible considering the benefit it brings to the CHP.

Item Type: Article
Date Type: Published Online
Status: In Press
Schools: Engineering
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
ISSN: 1551-3203
Date of First Compliant Deposit: 10 August 2020
Date of Acceptance: 19 July 2020
Last Modified: 12 Aug 2020 14:45
URI: http://orca-mwe.cf.ac.uk/id/eprint/134118

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