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Evaluation of the Tradeoff between System Yield andHydrogeneration of Dachia and Daan Rivers

机译：大河和大河河流系统产量和氢化之间的权衡评价

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Water demand is increasing rapidly in Taiwan, on the other hand, construction of large water resources projects are postponded due to environmental concern. In this situation, both development and management alternatives are considered to increase the reliable water yield in Taiwan. The joint water supply system of Dachia and Daan Rivers was selected as case study in this paper to analyze the potential contribution of system yield through joint utilization of water resources of these two rivers. Two alternatives were simulated to compare the capabilities of supplying water to meet the demand of Taichung metropolitan at year 2021: ①adjusting the pattern of peak hydrogeneration of Derchi Reservoir, and ②transferring raw water form Dachia River to Daan River. Three situations were encountered in the simulation: ①high turbid raw water might prohibit the water to be transferred or restrict the quantity of water can be processed in the treatment plant after heavy storm , ②peak hydrogeneration carried out in a few hours might reduce the available amount of water withdrawn for a certain purpose , and ③water should be supplied directly to Taichung instead of passing through the transbasin waterway. Special algorithms were provided in the Generalized Water Allocation Simulation Model ( GWASIM) to correctly simulate the water utilization of this complex system. The analyzed results showed that the first alternative could increase the water supply capability of the joint water supply system, but it could reduce part of hydrogeneration as trade — off. The second alternative could increase the utilization rate of the water released from the hydropower plant and the unregulated flow to the downstream. It also could improve the complementary ability of supplying water between the two rivers system.
机译：台湾水需求迅速增加，另一方面，大型水资源项目的建设因环境问题而被推迟。在这种情况下，发展和管理替代方案都被认为是增加台湾的可靠水产。在本文中，选择了大曲程和大河河的联合供水系统作为案例研究，分析了通过这两条河流的水资源的利用率分析了系统产量的潜在贡献。模拟了两种替代方案，以比较供水的能力，以满足2021年的台中大都市需求的能力：①调整德里储层峰的峰值模式，②翻译原料水形式大河河至大安河。在模拟中遇到了三种情况：①高浑浊的原水可能禁止将水转移或限制水量可以在大暴风雨后处理水中，②在几个小时内进行的斑点散热可能会降低可用金额用水以某种目的取消，③水应直接向台中提供，而不是通过转置扇蛋白水路。在广义水分配模拟模型（GWASIM）中提供了特殊算法，以正确模拟该复杂系统的利用。分析结果表明，第一种替代方案可以提高联合供水系统的供水能力，但它可以减少作为权衡的一部分氢化。第二种替代方案可以提高水电站释放的水的利用率和向下游的未调节流动。它还可以提高两条河流系统之间供水的互补能力。

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