The dynamics of a storage pipe is examined using a grey-box model based on on-line measured data. The grey-box modelling approach uses a combination of physically-based and empirical terms in the model formulation. The model provides an on-line state estimate of the overflows, pumping capacities and available storage capacity in the pipe as well as predictions of future states. A linear overflow relation is found, differing significantly from the traditional modelling approach. This is due to complicated overflow structures in a hydraulic sense where the overflow is governed by inertia from the inflow to the overflow structures. The capacity of a pump draining the storage pipe has been estimated for two rain events, revealing that the pump was malfunctioning during the first rain event. The grey-box modelling approach is applicable for automated on-line surveillance and control.
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Research Article| October 01 1997
Time series modelling of overflow structures
Water Sci Technol (1997) 36 (8-9): 45–50.
Jacob Carstensen, Poul Harremoës; Time series modelling of overflow structures. Water Sci Technol 1 October 1997; 36 (8-9): 45–50. doi: https://doi.org/10.2166/wst.1997.0642
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