Journal
JOURNAL OF BUILDING PERFORMANCE SIMULATION
Volume 12, Issue 5, Pages 523-545Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/19401493.2018.1523950
Keywords
control-oriented model; district heating; model predictive control; solar community; thermal energy storage; solar collectors
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Funding
- Natural Resources Canada through the Office of Energy Research and Development
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The development of a control-oriented model of a solar community with seasonal storage (the Drake Landing Solar Community) is investigated. The proposed approach, intended to facilitate the development and testing of control strategies and targeting an actual predictive control implementation, is based on grey-box models, and enables the prediction of the system state (temperatures at key locations). This paper discusses the concept of state update procedure (whereby the system state is periodically corrected with measurements), which plays a fundamental role for control purposes. Firstly, the DLSC is presented and both operation and monitoring system are described. Secondly, a simplified model is developed for each sub-system: district and solar loops, short-term (water tanks) and seasonal (borehole) thermal energy storage, and existing operation rules are encoded. Finally, the model is calibrated and validated by using measurements at 10-min intervals over two years of operation (2015-2016, 2016-2017) and accurately predicts the system performance.
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