水利水电科技进展2016，Vol.36Issue(4)：59-64,6.DOI:10.3880/j.issn.1006-7647.2016.04.011
考虑滞时电量的水电中期调度拉格朗日松弛方法
Lagrangian relaxation method for medium-term operation of hydropower systems considering delayed energy
摘要
Abstract
In view of the problem of inflow delay in medium-term operation of cascade hydropower stations, a concept of delayed energy is introduced, and a stored energy maximization model was constructed for the end of the operation period. A Lagrange relaxation method based on a two-stage subgradient algorithm used to update multipliers is proposed to solve the model. In the first stage, the initial multipliers are rapidly determined by increasing coefficients gradually. In the second stage, the convergence speed is increased by decreasing coefficients gradually. The proposed model and solution method were applied to medium-term optimal operation of six hydropower stations located in the middle and lower reaches of the Lancang River. The results show that the proposed method can obtain good solutions, considering delayed energy can increase stored energy of the hydropower system for the end of the operation period, and the post-effect of medium-term operation should be considered sufficiently.关键词
梯级水电站群/优化调度/中期调度/蓄能最大模型/滞时电量/拉格朗日松弛方法Key words
cascade hydropower stations/optimal operation/medium-term operation/stored energy maximization/delayed energy/Lagrange relaxation method分类
水利科学引用本文复制引用
李保健,武新宇,申建建..考虑滞时电量的水电中期调度拉格朗日松弛方法[J].水利水电科技进展,2016,36(4):59-64,6.基金项目
国家自然科学基金(51209031,51109024) （51209031,51109024）
