Frequency Control and Power Sharing in Combined Heat and Power Networks

TL;DR

This paper introduces a novel power sharing scheme for district heating systems to provide frequency regulation in power networks, ensuring stability and optimal energy source utilization without prior disturbance knowledge.

Contribution

It proposes a new temperature-based power sharing method enabling stable, optimal frequency regulation in combined heat and power networks without needing disturbance forecasts.

Findings

The scheme ensures stability in combined heat and power networks.

It facilitates optimal power allocation among diverse heat sources.

Both proposed approaches effectively contribute to frequency regulation.

Abstract

We consider the problem of using district heating systems as ancillary services for primary frequency control in power networks. We propose a novel power sharing scheme for heating systems based on the average temperature, which enables an optimal power allocation among the diverse heat sources without having a prior knowledge of the disturbances. 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.