Author(s): Wentao Hou; Shaohui Zhang; Meijian Bai; Haorui Chen; Wei Dai; Yinong Li

Linked Author(s): Haorui Chen, Wentao Hou

Keywords: Operational rule-based; Open-channel irrigation systems; Decision making; Flow scheduling; Stormwater utilization

Abstract: For open-channel irrigation systems (OCIS) in developing countries, which are either manually operated or controlled locally in a stand-alone manner, any efforts to support decision-making activities must consider human demands. In this work, we propose a straightforward rule-based feedback control to improve channel water storage capacity and stormwater resource utilization in OCIS with multiple reaches. The model that integrates the dynamic relationships of water transfer between natural runoff, canal systems, and hydraulic structures. To reduce the computational complexity, an algorithm based on rules is proposed. In this algorithm, the operational statuses of different channels are classified, and distinct managerial heuristic rules are applied accordingly. The performance of the rule-based approach is evaluated through a closed-loop simulation of in Pishihang Irrigation District in Anhui Province (China). The simulation results suggest that during periods of small and medium rainfall, the average relative error in the flow process for each floodgate remains at 13%. In contrast, during heavy rainfall periods, this average relative error increases to approximately 20%. Overall, the simulation results are favorable, indicating that the approach can provide highly executable decision support for OCIS managers and are capable of continuously integrating the scheduling experience of front-line workers.

DOI: https://doi.org/10.64697/HIC2024_P353

Year: 2024