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1.发明公开公开(公告)号：US20240142348A1
公开(公告)日：2024-05-02
申请号：US18489845
申请日：2023-10-19
发明人： Jing YANG , Zubing ZOU , Xiquan LIU , Yong SUN , Zhe MA , Peng LI , Yuan GAO
CPC分类号： G01M99/008 , F01D15/08 , F01D15/10
摘要： A method for determining a regulation range of pumping power of a three-machine pumped storage unit is provided. The method includes: obtaining a first parameter set of pumping measurement parameters for characterizing the three-machine pumped storage unit and determining a pumping process efficiency; determining a first relational expression based on the pumping process efficiency and a design efficiency of a pumped storage power station and establishing a second relational expression; and determining a third relational expression based on power absorbed by a power grid and the second relational expression and determining a fourth relational expression, where the fourth relational expression reflects the regulation range of the pumping power of the three-machine pumped storage unit. The method for determining the regulation range of the pumping power of the three-machine pumped storage unit is proposed according to unit characteristics and operating economy of the power station.
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公开(公告)号：US20240003327A1
公开(公告)日：2024-01-04
申请号：US18342981
申请日：2023-06-28
发明人： Jing YANG , Xiquan LIU , Zubing ZOU , Yong SUN , Zhe MA , Yuan GAO , Peng LI , Fangzheng WANG , Zhe LI
摘要： A method and device for determining a suction height of a variable speed unit is provided. The method includes: acquiring a reference cavitation coefficient and a reference specific rotation speed parameter corresponding to a target water head section in a preset number of power stations; conducting calculations on the reference cavitation coefficient and the reference specific rotation speed parameter by utilizing a target scheme to obtain a target formula; acquiring a maximum lift, a minimum lift, a speed variation range and a synchronous rotation speed value of a current target variable speed unit and input force values of the target variable speed unit at a plurality of key working condition points; and determining a target suction height of the target variable speed unit.
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