Test-bed for pump as turbine transition process based on digital twinning

Patent metadata

Field	Value
Publication number	US-12540595-B2
Application number	US-202519215063-A
Country	US
Kind code	B2
Filing date	May 21, 2025
Priority date	Mar 13, 2024
Publication date	Feb 3, 2026
Grant date	Feb 3, 2026

Abstract

A test-bed for a pump as turbine transition process based on digital twinning is provided, including a PAT physical model used for controlling the pump as turbine transition process and collecting data of the pump as turbine transition process; a PAT twinning data system used for processing the data of the pump as turbine transition process to obtain a measurement database; a PAT twinning virtual system used for carrying out numerical simulation on the pump as turbine transition process based on the measurement database to obtain a value obtained by numerical simulation of a PAT virtual system; and a PAT service system used for processing the value obtained by the numerical simulation of the PAT virtual system, obtaining an optimal operation strategy and feeding the strategy back to the PAT physical model, and updating the measurement database at the same time.

First claim

What is claimed is:

1 . A test-bed for a pump as turbine transition process based on digital twinning, comprising: a pump as turbine (PAT) physical model, a PAT service system, a PAT twinning virtual system and a PAT twinning data system;
the PAT physical model comprises a PAT module, a booster pump module, a control system module and an acquisition module; wherein the PAT module comprises a lower water level tank, a static pressure sensor, at least two valves including a first valve (valve 1) and a second valve (valve 2), a flowmeter, an upper water level tank and a motor; the booster pump module comprises the lower water level tank, the valves, a booster pump, the static pressure sensor, and the upper water level tank; the control system module comprises a frequency converter, an energy feedback unit and an electric cabinet; and the acquisition module comprises the static pressure sensor, a dynamic pressure sensor, a rotating speed torque sensor, an upper computer, and an acquisition card, wherein the PAT physical model is used for controlling the pump as turbine transition process and collecting data of the pump as turbine transition process; the PAT twinning data system is used for processing the data of the pump as turbine transition process to obtain a measurement database; the PAT twinning virtual system is used for carrying out numerical simulation on the pump as turbine transition process based on the measurement database to obtain a value obtained by numerical simulation of a PAT virtual system; and the PAT service system is used for processing the value obtained by the numerical simulation of the PAT virtual system, obtaining an optimal operation strategy and feeding the strategy back to the PAT physical model, and updating the measurement database at a same time until a target working condition is reached; wherein the PAT service system comprises: a machine learning module, an optimal strategy selection module and a judgment module; wherein the machine learning module is used for determining relationships among flow rate, outlet pressure, inlet pressure and valve opening through machine learning, and constructing a neural network model; the optimal strategy selection module is used for searching a corresponding strategy through the neural network model and obtaining the optimal operation strategy; and the judgment module is used for judging a matching relationship between the valve opening and adjustment time, calculating response time of the optimal strategy and judging a rationality of a strategy selection; an expression of a strategy optimization mode of the optimal strategy selection module is:
Y min=(valve 1 opening′−valve 1 opening) 2 +(valve 2 opening′−valve 2 opening) 2 ;

wherein the valve 1 opening′ is valve 1 target opening, and the valve 1 opening is valve 1 current opening; and the valve 2 opening′ is valve 2 target opening, the valve 2 opening is valve 2 current opening, and Ymin is an evaluation index; and the PAT service system is also used for evaluating a pressure pulsation value generated in the transition process of the numerical simulation, determining that an amplitude of a pressure pulsation is within a safe range, and after ensuring that a frequency of the pressure pulsation is inconsistent with a resonance frequency of a unit, transmitting a new valve opening command to the PAT physical model to operate the valve 1 and the valve 2 to adjust water flow between the upper and lower tanks, and initiate the motor excitation to generate stable voltage.

2 . The test-bed for the pump as turbine transition process based on the digital twinning according to claim 1 , wherein the upper water level tank is arranged on an adjustable height bracket and is provided with an overflow hole for cooperating with the water level tank to keep a liquid height difference unchanged;
the booster pump is used for lifting water in the lower water level tank into the upper water level tank to keep a water level in the upper water level tank at an overflow water level; and the flowmeter is installed at a pipe diameter 10 times from the upper water level tank to ensure an accuracy of flow rate measurement.

3 . The test-bed for the pump as turbine transition process based on the digital twinning according to claim 1 , wherein
the PAT twinning data system is also used to add data of the flow rate, the outlet pressure, the inlet pressure and the valve opening as a set of states to a database, and at the same time, the flow rate, pressure and torque values collected by the acquisition card are processed and transmitted to the PAT service system.

4 . The test-bed for the pump as turbine transition process based on the digital twinning according to claim 1 , wherein the PAT twinning virtual system comprises a numerical simulation module and a dynamic display module;
wherein the numerical simulation module is used for simulating the measurement database through a boundary condition calculation method, a boundary condition adjustment method, a numerical simulation method and a result preprocessing method; and the dynamic display module is used to display a twin system interface of the test-bed and a real-time data dynamic change interface.

Assignees

• Univ Jiangsu

Inventors

• Wang Wenjie
• Zhang Chenying
• Pei Ji
• Yuan Shouqi
• Li Yanjun
• Gan Xingcheng
• Chen Jia

Classifications

• F05B2260/84

  Modelling or simulation · CPC title

• F05B2260/83

  Testing, e.g. methods, components or tools therefor · CPC title

• F03B13/06

  Stations or aggregates of water-storage type, {e.g. comprising a turbine and a pump}(turbines characterised by having means for functioning alternatively as pumps F03B3/10) · CPC title

• G06F30/17

  Mechanical parametric or variational design · CPC title

• F03B15/00 Primary

  Controlling (controlling in general G05 {; regulation of plants characterised by the use of siphons F03B13/086}) · CPC title