Control-oriented modeling and passivity analysis of thermal dynamics in a multi-producer district heating system. Issue 1 (2023)

• Record Type: Journal Article
• Authors: Ahmed, Saeed; Machado, Juan E.; Cucuzzella, Michele; Scherpen, Jacquelien M.A.
• Is Part Of: IFAC-PapersOnLine. Volume 56:Issue 1(2023)
• Page Start: 175
• Page End: 180
• Publication Date: 2023
• Subjects: District heating -- thermal dynamics -- Krasovskii passivity -- shifted passivity -- zero-state detectability; Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2023.02.030
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: Climate change and geopolitics have led to the conception of plans for reducing greenhouse gas emissions and improving the sustainability of existing fossil-based energy systems. In this respect, district heating has been identified as an indispensable player for its potential to integrate seamlessly environmentally-friendly heat sources. To improve the efficiency of these district heating systems, optimal operation schemes can be devised and enforced through control systems. To this end, we present a control-oriented nonlinear ODE-based model of temperature dynamics in a multi-producer district heating system. The model features a modular design and comprises the thermal dynamics of heat exchangers of producers and consumers interconnected by a distribution network of meshed topology. Then, we establish passivity properties and zero-state detectability for the modeled temperature dynamics that could be exploited for controller design and solving constrained optimization problems.