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arXiv · 2509.24051

Frequency Control and Optimal Power Sharing in Combined Power and Heating Networks with Heat Pumps

Xin Qin·Ioannis Lestas
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Abstract

Heat pumps have the capability for fast adjustments in power consumption with potential connections to large heating-inertia district heating networks, and are thus a very important resource for providing frequency support in low-inertia power systems. Nevertheless, the coupling of power networks with district heating systems renders the underlying dynamics much more involved. It is therefore important to ensure that system stability and appropriate power sharing are maintained. In this paper, we consider the problem of leveraging district heating systems as ancillary services for primary frequency control in power networks via heat pumps. We propose a novel power sharing scheme for heating systems based on the average temperature. This enables an optimal power allocation among diverse energy sources without requiring load disturbances information. We then discuss two approaches for heating systems to contribute to frequency regulation in power networks. We show that both approaches ensure stability in the combined heat and power network and facilitate optimal power allocation among the different energy sources. We also discuss how various generation dynamics can be incorporated into our framework with guaranteed stability and optimality. Finally, we conduct simulations that demonstrate various tradeoffs in the transient response and the practical potential of the proposed approaches.

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BibTeXRIS

Xin Qin, Ioannis Lestas. 2025-09-28. Frequency Control and Optimal Power Sharing in Combined Power and Heating Networks with Heat Pumps. https://arxiv.org/abs/2509.24051

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