水库群优化调度模型求解加速策略研究

摘要

With an aim at dealing with the defeats of long-time consumption in seeking solution to the operation model for traditional multi-reservoir systems,this paper suggests a kind of accelera-tion strategy of the calculation program.Through transforming the interpolation mode of reser-voir feature curves in the process of traditional reservoir operation optimization and in terms of the pre-construction of piecewise linear function of reservoir feature curve node data,the readings of reservoir feature curves can be realized by means of the piecewise linear function to replace the traditional interpolation method.With the hydroelectric operation of a cascade reservoir under typical reservoir inflows as the case study,the cuckoo search algorithm is selected to carry out the optimal calculation and to compare traditional interpolation strategy with the acceleration strate-gy.The research findings indicate that the acceleration strategy based on the piecewise linear function can obviously shorten the calculation time consumption,and at the same time,this ac-celeration strategy can hardly affect the algorithm convergence,optimal results and its stability. Accordingly,the acceleration strategy based on the piecewise linear function is rational and relia-ble as well as a kind of practical and effective method to improve the optimization efficiency of res-ervoir operation models.%针对传统水库群调度模型求解计算耗时较长的缺陷,提出了一种计算程序加速策略.通过转变水库调度计算过程中水库特征曲线的插值模式,根据水库特征曲线节点数据预先构造分段线性函数,利用分段函数替换传统插值方法以实现水库特征曲线的读取.以典型入库流量下某梯级水库发电优化调度为实例,选用布谷鸟算法进行优化计算,对比了传统插值策略与加速策略.结果表明:基于分段线性函数的加速策略能明显缩短计算耗时,同时该加速策略对算法的收敛性、优化结果以及其稳定性几乎无影响.因此,基于分段线性函数的加速策略合理、可靠,是提高水库调度模型求解效率的一种实用、有效方法.