Study On Water Quantity Simulation And Control Of Regional Water Transfer System

Water resources are relatively scarce to the population in China. And the distribution of water resources is uneven in spatial and temporal scales. Because of the differences of economy development and the natural distribution of water resources among different regions, long-distance water-transfer technology applications become more and more popular. While the development of water conservancy engineering technology provides important technique support to the long-distance redistribution of water resources. Therefore, it is very significant of water quantity modeling to long-distance water-transfer project control.The research area of this paper is the reach from Dongping Lake to Jinan city (Jiping Channel for short), which is part of the east line of South-to-North Water Transfer Project. The water quantity simulation and control application of water transfer system are studied. First, a water transfer hydrodynamics model that applies to Jiping Channel is set up. In the computing of hydrological factors of water in the channel, the unsteady flow computation based on Saint Venant equations dispersed by Preissmann Four Point linear implicit scheme is applied. And the scheme is solved by the matching pursuit method and the precision about the result is improved greatly. Secondly, a state equation of the control system is set up. Accuracy, feedback and stability are considered together to analyze the characteristics of the system. The results presents that the Jiping Channel water-transfer system is reliable, safe and feasible.The results of the model indicate that water-transfer hydrodynamics model in Jiping Channel can be applied to water quantity modeling and long-distance water-transfer system control. So this model can be used in relative modeling of similar artificial channels.