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在水电站尾水管设计中，因尾水管等流道不匹配而造成巨大电能浪费。通过对Ｗ电站尾水管型式分析和优化，可以提高水轮机效率１％～２％。还可以减少尾水管压力脉动，有利于电站安全稳定运行。水电设计者应重视机组段试验研究，使设计方案更加优秀
In the design of the draft tube of a hydropower station, a huge waste of electricity is caused by the mismatch of the draft tube and other runners. By analyzing and optimizing the draft tube type of W station, the turbine efficiency can be increased by 1% ~ 2%. It can also reduce the pressure pulsation of the draft tube and is conducive to the safe and stable operation of the power station. Hydropower designers should pay great attention to the experimental study of the unit section to make the design more excellent