Predictive control for the operation of cascade pumping stations in water supply canal systems considering energy consumption and costs

Kong, Lingzhong; Li, Yueqiang; Tang, Hongwu; Yuan, Saiyu; Yang, Qian; Ji, Qingfeng; Li, Zhipeng; Chen, Ruibin

doi:10.1016/j.apenergy.2023.121103

Cited by 21 publications

(6 citation statements)

References 25 publications

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“…For example, Qiu et al [7], Mollios et al [8], Kong et al [9], Wijaya et al [10], Afram et al [11], and Ji et al [12] completely ignored VFD and motor efficiencies, V.K. Shankar et al [13], Yiqun Pan et al [14], Chilundo et al [15], and R. Saidur et al [16,17] ignored VFD efficiency and utilise a simplified motor efficiency which is treated as a constant, and Viholainen et al [18] and Wang et al [19] treated both VFD and motor efficiencies as constant.…”

Section: Energy Model Reviewmentioning

confidence: 99%

“…Figure 3a compares the fan head-airflow curves and the shaft power-airflow curves, Figure 3b compares the fan head-shaft power curves and Figure 3c compares the fanefficiency curves at the design full speed (ω = 1) and a partial speed (ω = 0.8) for a typical centrifugal fan. In Figure 3, the fan curves at the design full speed are defined by Equations (1)-( 4), the converted fan curves at the 80% speed are defined by Equations ( 6)- (9), and the conversion between the points, A0, B0, C0, and D0, at the design full speed, and their similar points, A1, B1, C1, and D1, at the 80% speed, is conducted using Equations (5a)-(5b).…”

Section: Affinity Lawsmentioning

confidence: 99%

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Loose Belt Fault Detection and Virtual Flow Meter Development Using Identified Data-driven Energy Model for Fan Systems

Wang

Tiamiyu

et al. 2023

Sustainability

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An energy model that correlates fan airflow, head, speed, and system power input is essential to detect device faults and optimize control strategies in fan systems. Since the application of variable-frequency drives (VFDs) makes the motor-efficiency data published by manufacturers inapplicable for VFD–motor–fan systems, the fan efficiency and drive (belt–motor–VFD) efficiency must be identified for each individual system to obtain accurate energy models. The objectives of this paper are to identify an energy model of existing VFD–motor–fan systems using available experimental data and demonstrate its applications in loose belt fault detection and virtual airflow meter development for optimal control. First, an approach is developed to identify the fan head, fan efficiency, and drive-efficiency curves using available fan head, speed, and system power input as well as temporarily measured airflow rate without measuring shaft power. Then, the energy model is identified for an existing VFD–motor–fan system. Finally, the identified model is applied to detect the slipped belt faults and develop the virtual airflow meter. The experiment results reveal that the developed approach can effectively obtain the energy model of VFD–motor–fan systems and the model can be applied to effectively detect slipped belt faults and accurately calculate the fan airflow rate.

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Section: Energy Model Reviewmentioning

confidence: 99%

Section: Affinity Lawsmentioning

confidence: 99%

Loose Belt Fault Detection and Virtual Flow Meter Development Using Identified Data-driven Energy Model for Fan Systems

Wang

Tiamiyu

et al. 2023

Sustainability

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“…Flow monitoring, as an important part of water information monitoring, is of great significance for hydraulic control, hydraulic characterization, and accurate simulation of hydrodynamics in channels [6][7][8]. Compared with water level monitoring, flow monitoring is more affected by flow disturbances, so the accuracy of water level monitoring is higher than that of flow monitoring [9,10]. Therefore, the purpose of this paper is to use the boundary combination of the hydrodynamic model to modify the flow process of the channel pool as much as possible by using the hydrodynamic model itself.…”

Section: Introductionmentioning

confidence: 99%

A New Open Channel Flow Correction Method Based on Different Boundary Combinations in Hydraulic Modeling

Chen,

Wei,

Zhang

et al. 2024

Water

Self Cite

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In open-channel water transfer projects, hydrodynamic modeling has been one of the tools commonly used by the scheduling staff to perceive the changes in the water condition of the channel. The reliability of the flow monitoring data has not been guaranteed due to restrictions in the flow monitoring method. Flow monitoring errors directly reduce the accuracy of hydrodynamic modeling calculations, making it impossible to accurately grasp the real-time changes in the internal water conditions of the channel. In this paper, by utilizing the characteristics of the hydrodynamic model itself, which can be solved discretely with multiple boundary conditions, the method of correcting the boundary anomaly data is proposed by changing the combination of hydrodynamic boundaries. This solves the problem of the inaccuracy of hydrodynamic model calculations due to errors in the monitoring data and improves the accuracy of the hydrodynamic model calculations. In the actual operation process, it is found that the method proposed in this paper solves the problem of hydrodynamic model misalignment caused by flow observation errors by correcting the flow during the flow adjustment period, which greatly improves the calculation accuracy of the hydrodynamic model. Secondly, for a stable flow period, the method proposed in this paper can quickly capture and correct the local monitoring of abnormal data and improve the overall hydrodynamic simulation accuracy.

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“…The principle of the ID model is to divide the channel into uniform and backwater zones according to the hydraulic response relationship and use the hydraulic response relationship to predict the evolution of the water level change and flow rate in the channel. This control method has been widely used in water transfer and irrigation projects [19][20][21][22]. However, all of the above articles focus on the accurate control of the water level, ignoring the role of its storage capacity in the regulation process.…”

Section: Introductionmentioning

confidence: 99%

Study on the Hydraulic Response of an Open-Channel Water Transmission Project after Flow Switching

Zhang,

Ren,

Lin

2023

Water

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For the complex and changing water transfer conditions along the nullah water transfer project, it is of great significance to analyze the hydraulic response characteristics of the channel pool to ensure the safe and efficient operation of the project. In this paper, using the adjustable reservoir capacity of the channel pool, combined with the earliest and latest regulation time, a method is proposed to determine the optimal regulation time of water conservancy engineering structures through the hydraulic response characteristics. In order to validate the method, the hydraulic response characteristics of the channel pool during the whole regulation period were investigated using an actual river diversion project as an example. By using the Sobol global sensitivity analysis method, the sensitivity analysis of three variables (water transfer flow, upstream initial flow, and downstream water level) was conducted, and the results showed that the change of water transfer flow was the most-critical factor affecting the optimal regulation time. In order to quantitatively study the correlation between the water transfer flow and the optimal regulation time, the water transfer flow factor was coupled to the existing prediction model, and the results showed that the coupled model can efficiently predict the optimal regulation time, and the NSE coefficient can reach 0.98. In addition, the coupled model can be efficiently used to serve on-site dispatchers for accurately predicting the optimal regulation time and making the corresponding safety decisions.

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Predictive control for the operation of cascade pumping stations in water supply canal systems considering energy consumption and costs

Cited by 21 publications

References 25 publications

Loose Belt Fault Detection and Virtual Flow Meter Development Using Identified Data-driven Energy Model for Fan Systems

Loose Belt Fault Detection and Virtual Flow Meter Development Using Identified Data-driven Energy Model for Fan Systems

A New Open Channel Flow Correction Method Based on Different Boundary Combinations in Hydraulic Modeling

Study on the Hydraulic Response of an Open-Channel Water Transmission Project after Flow Switching

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