三峡升船机船厢对接停位及运行分析

Docking stopping position and operation analysis of Three Gorges ship lift trough

三峡升船机通航水位变化大、变动快一直是运行管理的焦点问题,设计时为保证安全,严格控制船厢准确停位条件,但也导致频发停位不准的故障而重新对位,严重影响效率。针对准确停位效率低的问题,研究对接停位机理,基于船厢跟随水位校准目标位的自动控制方式,采取优化船厢位置与航道水位的偏差控制值和补充人工干预的措施,改善准确停位控制条件,提高对接效率。分析对接停位中航道水位变动及船厢位移、驱动电机转速变化规律,得出下游与上游对接停位运行的差异,提出降低下行停位的速度控制曲线斜率,提高运行的平滑性,为升船机运行安全及提升效率提供参考。

The great and fast variation of water level has always been the focus of operation management of the Three Gorges ship lift.To ensure safety,strict control conditions are adopted in the trough docking position in the design,but it also frequently causes the fault of stop position and increase of reposition,which seriously affects efficiency.In view of the low efficiency of accurate stopping,we study the docking stopping mechanism,optimize the control value of the deviation between the trough location and the channel water level and add measures of manual intervention based on the automatic control mode of following water to calibration target position to improve the exact stopping condition and docking efficiency.Analyzing the variation law of the channel’s water level and characteristics of the trough displacement and the driving motor speed during the docking stopping,we obtain the difference between the downstream and upstream,present the idea to degrade the slope of speed control curve to improve smoothness.It provides reference for the improvement of the safety and efficiency of the ship lift operation.