查哈阳灌区水资源优化调度的大系统分解协调模型

A Large System Decomposition Coordination Model of Optimal Operation on Water Resources in Chahayang Irrigation District

针对黑龙江省西部典型半干旱区的降水时空分布不均、水资源短缺等供水问题,运用大系统分解协调原理,以查哈阳灌区为例,建立了具有两层结构基于RAGA大系统分解协调的灌区水资源优化调度模型。对地表水和地下水统筹考虑,满足工业、生活、农业和生态环境等不同用水需求,实现区域水资源合理调度。同时优化作物非充分灌溉制度,节约了灌溉用水量,实现了有限水资源获得最大的经济效益。RAGA能够解决模型中目标函数非线性的特点,具有计算效率高、全局搜索能力和鲁棒性强等优点,实例研究表明可为查哈阳灌区水资源的优化利用提供科学依据。

According to the uneven distribution of precipitation in time and space and water resources shortage in semi-arid areas of West Heilongjang, taking the Chahayang irrigation district as an example, an optimal operation model of water resources in irrigation districts with two structures based on RAGA large system decomposition coordination is established. Surface water and ground water are considered synchronously in order to satisfy water demands in life, industry, agriculture and ecological environment ,and the rational allocation of regional water resources can he realized. At the same time, the non-sufficient irrigation schedules are optimized to save water consumption, and the largest economic benefit with limited water resources can finally be realized. The nonlinearity problem of objective function can be solved by RAGA , and RAGA has the advantage of a higher calculation efficiency, a powerful ability of global search and strong robustness. The example proves that the model can provide a scientific basis for the optimal utilization of water resources in the Chahayang Irrigation District.