寒区抽水蓄能电站冰冻库容设计方法探讨

Discussion on Design Method of Frozen Storage Capacity of Pumped-storage Power Station in Cold Region

基于二重积分定义给出了抽水蓄能电站冰冻库容计算公式,其中的冰厚计算在分析水库冰情影响因素的基础上,考虑电站运行的影响,采用多元回归方法得到了我国北方寒区抽水蓄能电站最大冰厚计算方法。在总结我国北方已建抽水蓄能电站水库冰情分布特性的基础上,采用离散化方法将库面结冰区域分为厚冰区和薄冰区,提出一种实用的冰冻库容设计计算方法。验证显示,提出的抽水蓄能电站水库最大冰厚和冰冻库容设计计算成果比传统设计方法更接近于实测结果。

Based on the definition of double integral,the calculation formula of frozen storage capacity of pumped-storage power station is obtained,in which,the calculation method of maximum ice thickness of pumped-storage power stations in cold region of North China is obtained by using multiple regression method on the basis of analyzing the influencing factors of reservoir ice condition and considering the influence of station operation.On the basis of summarizing the ice distribution characteristics of the existing pumped-storage power station reservoirs in North China,a practical design and calculation method of ice storage capacity is proposed by using the discrete method to divide the ice area on the reservoir surface into thick ice area and thin ice area.The practical verification shows that the maximum ice thickness and ice storage capacity of pumped-storage power station reservoirs calculated by proposed design and calculation method are closer to the actual measurement data than the calculation results of traditional design method.