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Article

Virtual Inertia Control of Variable Speed Heat Pumps for the Provision of Frequency Support

School of Electrical and Electronics Engineering, University College Dublin, D04V1W8 Dublin, Ireland
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Energies 2020, 13(8), 1863; https://doi.org/10.3390/en13081863
Received: 29 February 2020 / Revised: 3 April 2020 / Accepted: 6 April 2020 / Published: 11 April 2020
(This article belongs to the Section A: Electrical Engineering)
The growth in the integration of converter interfaced renewable energy has reduced the system inertia, which threatens system stability due to high rate of change of frequency (RoCoF) and frequency nadir issues unless steps are taken to mitigate it. There is a need to provide sufficient fast frequency response to maintain adequate inertia in the system. This paper investigates the capabilities of a variable speed heat pump to provide an emulated inertial response. This paper presents a virtual synchronous machine control for a variable speed heat pump that provides support for grid frequency regulation over the inertial response time frame. A small-signal model with the transfer function of the variable speed heat pump is developed to analyse the effectiveness and feasibility of providing virtual inertia at the device and grid level, respectively. Furthermore, the small-signal model is validated using hardware in the loop simulation. Finally, the aggregated frequency response and virtual inertia contribution by a population of the heat pumps are evaluated and quantified in an urban distribution system. View Full-Text
Keywords: variable speed heat pump (VSHP); virtual inertia; small-signal analysis; hardware in the loop (HIL); frequency regulation; demand response variable speed heat pump (VSHP); virtual inertia; small-signal analysis; hardware in the loop (HIL); frequency regulation; demand response
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MDPI and ACS Style

Ibrahim, I.; O’Loughlin, C.; O’Donnell, T. Virtual Inertia Control of Variable Speed Heat Pumps for the Provision of Frequency Support. Energies 2020, 13, 1863. https://doi.org/10.3390/en13081863

AMA Style

Ibrahim I, O’Loughlin C, O’Donnell T. Virtual Inertia Control of Variable Speed Heat Pumps for the Provision of Frequency Support. Energies. 2020; 13(8):1863. https://doi.org/10.3390/en13081863

Chicago/Turabian Style

Ibrahim, Ismail, Cathal O’Loughlin, and Terence O’Donnell. 2020. "Virtual Inertia Control of Variable Speed Heat Pumps for the Provision of Frequency Support" Energies 13, no. 8: 1863. https://doi.org/10.3390/en13081863

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