糯扎渡水电站叠梁门试运行期实测水温与数值模拟水温对比分析

发布时间：2018-03-30 13:17

本文选题：糯扎渡水电站　切入点：叠梁门　出处：《水利水电技术》2017年11期

【摘要】：为尽量发挥分层取水措施的生态效益和电站的经济效益,将糯扎渡水电站叠梁门试运行期实测水温与数值模拟水温进行对比,发现:(1)2015年、2016年4—8月坝前库区实测的表层水温与数值模拟的表层水温有-16%~29%的偏差;(2)糯扎渡电站坝前库区实测水温分层状况和数值模拟结果一致,属全年分层型,但试运行期间水温分两层的时段约为4个月,水温分层厚度与数值模拟的分层厚度存在差异,而且4—8月中、上层的实测水温高于数值模拟水温;(3)数值模拟预测过高地预判了电站汛期水库蓄水位,从而过高地估计了4—8月的下泄水温影响,过低地预测了分层取水措施的升温效果;(4)设计推荐的叠梁门运行调度方案总体可行,但可能偏保守。根据上述对比分析结果,建议充分利用实测水温数据,对叠梁门设计进行效果评估,进一步优化分层取水措施设计并完善叠梁门运行调度方案。
[Abstract]:In order to give full play to the ecological benefits of stratified water intake measures and the economic benefits of the power station, the measured water temperature and the numerical simulation water temperature of Nuozhadu Hydropower Station during the trial operation period were compared. It is found that in 2015, the observed surface water temperature in the reservoir area in front of the dam in April-August 2016 is -16% deviation from that in numerical simulation. The measured water temperature stratification in the reservoir area in front of the dam of Nuozhadu Hydropower Station is consistent with the results of numerical simulation, and it belongs to the annual stratification type. However, the period of water temperature divided into two layers is about 4 months during trial operation, and the stratification thickness of water temperature is different from that of numerical simulation, and in the period of April to August, The measured water temperature of the upper layer is higher than that of the numerical simulation water temperature.) the prediction of the reservoir water level in the flood season of the power station by the numerical simulation is too high, and the influence of the discharge temperature on the water discharge temperature in April to August is overestimated. This paper predicts the heating effect of stratified water intake measures in low ground. The recommended operation scheduling scheme for laminated gate is generally feasible, but it may be conservative. Based on the above results, it is suggested to make full use of the measured water temperature data. This paper evaluates the effect of the design of the laminated door, and further optimizes the design of the layered water intake measures and improves the operation scheduling scheme of the laminated door.
【作者单位】：华能澜沧江水电股份有限公司;环境保护部环境工程评估中心;水电环境研究院;
【基金】：中国长江三峡集团公司资助项目(0799564,0799558,0799556) 中国华电集团公司资助项目(HD-XZ-DG-2015-FW-031) 中国博士后科学基金资助项目(2016M592404)
【分类号】：TV737

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