Abstract
The optimal operation of water distribution systems is an important research area for the modernization of irrigation schemes. In this paper, an improved 0–1 programming model is developed. This model has three objectives: minimum time of water distribution, minimum spacing of tertiary canals in a group, and the minimum difference of water distribution duration among tertiary canals in the group. The study results show that with the conventional model, 0–1 programming model and improved 0–1 programming model, the durations for the three models are 159.09, 140.50 and 141.07 h, respectively. The working distances are 44.8, 185.5 and 60.6 km. Compared with the conventional model, the lower canals of the improved 0–1 model are all large flow rate operations, while the conventional model inevitably has small flow rate operations, and the improved 0–1 model greatly reduces the duration of water distribution. Compared with the 0–1 model, the improved 0–1 model divides the adjacent canals into a group as much as possible, and the canals between groups start and end operations at the same time as much as possible, so the improved 0–1 model shortens the working distance of the staff and makes it easy for canal managers to operate canals.