三峡升船机准确停位系统优化改造

自三峡升船机试通航以来,由于其准确停位系统工作状态不稳定,偶尔导致升船机船厢无法准确停位于上、下游水位的情况。为改善三峡升船机准确停位系统的工作性能,计算并分析其在静态和动态条件下的检测精度,根据理论分析和试验数据提出优化改造方案。结果表明,采用脉冲宽度调制(PWM)调速和调压调速的改造方案,能够提高浮子的跟随速度,满足现阶段三峡升船机稳定运行的要求。

Optimization and improvement of accurate parking system for Three Gorges ship lift

Since the trial operation of the Three Gorges ship lift,the unstable working state of the accurate parking system makes that the ship lift chamber cannot accurately stop on the upper part and the downstream water level occasionally.In order to improve the working performance of the Three Gorges accurate parking system,we calculate and analyze its detection accuracy both in the dynamic and nonstatic condition,and put forward the improvement plan based on the theoretical analysis and experimental data.The results show that the improvement plan of pluse width modulation(PMV) regulation and adjustments of the voltage and speed,can increase the sensitivity of the float that manifest the water level,which can satisfy the requirements of stable operation of Three Gorges ship lift at the present stage.