Journal
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
Volume 146, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijepes.2022.108663
Keywords
District heating network; Droop control; Combined heat and power (CHP); Thermal energy storage
Categories
Ask authors/readers for more resources
This paper discusses the importance of using thermal energy storage to maintain the supply temperature in a district heating system. It proposes a concept and implementation of droop control based on the power sharing relationship between the temperature of the district heating water and other thermal energy resources. The functionality of the control is demonstrated through application to a residential district heating network model using the simulation program PSCAD.
In a district heating system, the flow of heated water transfers enthalpy from the generation side to the load side. It is thus critical to maintain the supply temperature at a desired level. However, with the rise of renewable energy sources in the district heating network, the temperature of the heated water tends to be disturbed. This calls for a deployment of thermal energy storage. To effectively exploit the flexibility of thermal energy storage, the relationship between the temperature of the district heating water and the power sharing with other thermal energy resources is considered in this paper. Based on this relationship, the concept and realization of a droop control for the district heating network is proposed. It is shown how the droop characteristic between the temperature of the heated water and the power sharing of the thermal energy storage for the district heating network is developed in analogy to the droop control used in an electrical dc network. The droop characteristic so supports the control of a district heating network. The theoretical considerations are complemented by application to a residential district heating network model to illustrate the functionality of the control. The studies are conducted with the program PSCAD, which is otherwise typically used for simulating electromagnetic transients.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available