中文摘要：

分析了现有蓄量补偿前馈控制算法存在灵活适应性不足、前馈控制时间误差偏大、试算求解较为繁琐等问题,提出了改进蓄量补偿法。改进算法采用前馈控制时间可变的蓄量补偿方式,可适应各种运行约束条件要求,采用的流量过程也更为灵活。研究了前馈控制时间的合理取值范围,指出了现有计算方法误差偏大的原因和适用条件。推导了多渠池多需求工况下的改进蓄量补偿法计算公式,其求解过程无需试算。以南水北调中线总干渠京石段为仿真对象,以消除水力滞后且水位波动最小为控制条件,对改进蓄量补偿法进行了测试。仿真结果表明,改进蓄量补偿法实现了预定的闸前常水位输水目标,前馈控制效果优于原蓄量补偿法。

英文摘要：

Problems of original volume-compensation algorithm are analyzed,which are insufficient flexibility,obvious error in feedforward control time calculation,and complexity of the algorithm.Revised volume-compensation method is put forward.Feedforward control time of the revised algorithm is variable,which means it＇s not decided by water demands schedule any more,but by operation limitations.Problems existed in original calculation method of feedforward control time are analyzed and corresponding solutions are expatiated.Algorithms for multiple-pool,multiple-demand cases are deduced without using trial and error method.In Beijing-Shijiazhuang section of the Middle Route of South-to-North Water Transfer Project,revised volume-compensation algorithm is tested aiming to reduce time delay and water fluctuations.Simulation results show that the constant downstream depth operation is achieved successfully.The feedforward control performance are better that original one＇s.