Modelling of the Central Heating Station within a District Heating System with Variable Temperatures

Abstract

Within this paper, the concept of developing a detailed model for an existing district heating system (DHS) is described. The research focusses on the central heating station with multiple different supply units. In the present case, the model is implemented with a close-toreality-control and will be used for testing new control strategies for the DHS. Therefore, a model with both realistic behavior as well as control interfaces similar to the real control is necessary. Within the NATAR research project (Local heating grids with lowered temperature as provider of balancing power), different targets for the improvement of the control will be investigated. One major target is an intelligent linking between the heat and electrical sector to demonstrate the opportunities of heating grids, as the investigated one, to balance the power grid.

Operational Experiences with a Temperature‐Variable District Heating Network for a Rural Community

“…Schematic illustration of the central district heating station in the DHN with selected measurement sensors (adapted to 17). …”

“…During the summer period (May – November), the flow temperature is lowered to about 40 °C and the central heat pump and the CHP plant are out of operation. Further control algorithms are described in Ramm et al 17.…”