Measurement-based Validation of Energy-Space Modelling in Multi-Energy Systems

In this paper we derive a unifying multi-energy system model to represent dynamics of interactions between its gas, water and electricity network components. We conceptualize each component as a two-directional energy conversion processing unit which receives at its inputs power at certain rate from the neighboring system components, and sends out power at certain rate to the rest of the system. This characterizes input-output relations of components and their dynamic interactions in terms of unifying energy and power variables. We show how generalized flow and effort variables, typically measured at component ports, can be used to validate the newly derived unifying model in terms of its real power and rate of change of reactive power. Based on actual data obtained for a commercial multi-energy HVAC installation we validate the newly derived model at nearly 99% accuracy.