A mixed Hinfty-Passivity approach for Leveraging District Heating Systems as Frequency Ancillary Service in Electric Power Systems

2026-02-22

AI Summary

This study addresses the challenge posed by thermal load uncertainty to frequency regulation in electricity-heat coupled systems by proposing a hybrid H∞-passivity-based control framework, which is applied for the first time to district heating systems participating in power grid frequency ancillary services. The controller is designed using linear matrix inequalities (LMIs) and incorporates a disturbance-independent temperature regulation mechanism that ensures thermal comfort while significantly enhancing robustness against heat demand uncertainty and improving grid frequency response. Simulation results demonstrate that the proposed approach effectively strengthens the coordinated control capability of the integrated energy system without compromising heating performance.

Technology Category

Planning, Routing, and Scheduling: Optimization of Spatio-temporal SystemsIntelligent Robots: Behavior Learning & ControlMultiagent Systems: Multiagent Systems under Uncertainty

Application Category

Systems and Infrastructure for Web, Mobile and WoT: Energy management for devices in mobile Web and WoT environmentsEconomics, Online Markets and Human Computation: LLM based quality controls for crowd workUser Modeling, Personalization and Recommendation: User modeling and simulation for interactive and conversational systems

Abstract

This paper introduces a mixed H-infinity-passivity framework that enables district heating systems (DHSs) with heat pumps to support electric-grid frequency regulation. The analysis illustrates how the DHS regulator influences coupled electro-thermal frequency dynamics and provides LMI conditions for efficient controller design. We also present a disturbance-independent temperature regulator that ensures stability and robustness against heat-demand uncertainty. Simulations demonstrate improved frequency-control dynamics in the electrical power grid while maintaining good thermal performance in the DHS.

Problem

• District Heating Systems
• Frequency Ancillary Service
• Power System Stability
• Heat Demand Uncertainty
• Electro-thermal Dynamics

Innovation

• mixed H-infinity-passivity
• district heating systems
• frequency regulation
• LMI-based control
• disturbance-independent regulator