A kind of reversible gas turbine semi-physical test system, method, program and storage medium

Abstract

The present application belongs to the technical field of semi-physical test, and particularly relates to a semi-physical test system, method, program and storage medium for a reversible gas turbine. The present application can realize semi-physical real-time closed-loop simulation of the reversible gas turbine, can realize the working characteristic research of the reversible gas turbine in forward rotation, reverse rotation and switching between forward rotation and reverse rotation, can realize the combination of the digital simulation model of the gas turbine and the real load, and can realize real-time and closed-loop semi-physical test and verification of functions and performances. The present application can reduce the risk and cost of the test of the reversible gas turbine, can provide a theoretical basis and technical support for the research of the reversible gas turbine, and can lay a foundation for the hardware-in-the-loop simulation and digital twinning of the gas turbine.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of semi-physical test, and particularly relates to a semi-physical test system, method, program and storage medium for a reversible gas turbine. BACKGROUND

[0002] Semi-physical simulation test is a closed-loop system in which both physical entities and computer simulation models are connected to each other. The semi-physical simulation replaces the part of the model that is complex and difficult to build with a physical entity, thereby avoiding complex mathematical modeling work and making the simulation and test results more reliable and accurate, which is beneficial to the implementation and operation of the test and reduces the risk and cost of the reversible gas turbine test.

[0003] Gas turbines are widely used due to their high power density and rapid response. However, as one of the main power devices of a ship, the inability to directly reverse is a major defect that greatly affects the maneuverability of the ship. To solve the problem of the gas turbine power system, the concept of reversible gas turbine emerges. Compared with other traditional reversing methods such as adjustable pitch propeller and reversing gear box, the reversible gas turbine can realize the reversing switching operation more quickly and improve the maneuverability of the ship. Currently, the research on the reversible gas turbine mainly focuses on the feasibility, aerodynamic calculation and air blast loss calculation, which are all theoretical research. There is a certain research gap in the reversible gas turbine real machine test and the working characteristics test of the gas turbine real-time simulation model and the switching mechanism load system. However, as a complex and large complex system, the gas turbine becomes more complex due to the forward and reverse switching. If the test is directly performed on the real object, firstly, the cost of the real object is high, and secondly, the forward and reverse switching process of the gas turbine is complex, and the test has uncertainty and great safety hazards. If the semi-physical simulation is used to study the reversible gas turbine, the cost and safety hazard problems in the test process can be avoided, the high-precision simulation of the dynamic characteristics of the gas turbine can be ensured, some processes that are difficult to realize in the simulation process can be simulated, and some experimental data that are difficult to calculate in the digital simulation process can be obtained, thereby laying a foundation for the design and working characteristic research of the reversible gas turbine. SUMMARY

[0004] The present application aims to provide a semi-physical test system, method, program and storage medium for a reversible gas turbine, which can simulate the forward and reverse switching process test of the reversible gas turbine under different steady-state working conditions, the acceleration and deceleration test in the forward and reverse process, verify the function of the control system of the reversible gas turbine, and realize the forward and reverse function verification of the reversible gas turbine.

[0005] A kind of reverseable gas turbine semi-physical test system, including gas turbine real-time simulation system, lower machine, load subsystem and switching mechanism subsystem;

[0006] The load subsystem includes first servo controller, first drive motor, torque instrument and eddy current dynamometer;The first servo controller is used to control the first drive motor, and the first drive motor is used to drive the eddy current dynamometer;The torque instrument is used to collect the torque when the eddy current dynamometer works.

[0007] The switching mechanism subsystem includes frequency conversion controller, frequency conversion motor, centrifugal air source fan, switching mechanism, inner duct flow pipeline and outer duct flow pipeline;The frequency conversion controller is used to control the frequency conversion motor, and the frequency conversion motor is used to drive the centrifugal air source fan;The switching mechanism includes second servo controller, second drive motor, electric push rod, switching baffle and shunt pipeline;The switching baffle is arranged in the shunt pipeline, and the inlet of the shunt pipeline is connected with the output end of the centrifugal air source fan;The shunt pipeline has two groups of outlets, which are connected with the inner duct flow pipeline and the outer duct flow pipeline respectively;A section of the inner duct flow pipeline and the outer duct flow pipeline is selected as flow measurement pipeline respectively, and the flow measurement pipeline is equipped with vortex flowmeter;The second servo controller is used to control the second drive motor, and the second drive motor is used to drive the electric push rod;The electric push rod is connected with the switching baffle, and a torque sensor is arranged on the electric push rod to measure the force of the electric push rod during switching.

[0008] The gas turbine real-time simulation system includes first host computer and second host computer;The first host computer is used for monitoring, control and alarm during simulation, and is used for storing and displaying simulation data;The second host computer is used for controlling the gas turbine real-time simulation model;The lower machine includes PLC measurement and control system, which is used for controlling the frequency conversion controller and the first servo controller.

[0009] Further, the electric push rod is used to drive the switching baffle to rotate;When the switching baffle is on the outer duct side, the inner duct flow pipeline is closed, and at this time, the gas state under the forward running of the reverseable turbine of the simulated gas turbine is simulated;When the switching baffle is on the inner duct side, the outer duct flow pipeline is closed, and at this time, the gas state under the reverse running of the reverseable turbine of the simulated gas turbine is simulated;When the switching baffle is between the two sides, the switching state of the gas in the inner and outer ducts of the reverseable turbine of the simulated gas turbine is simulated.

[0010] Further, the first host computer and the second host computer are connected through UDP communication;The gas turbine real-time simulation system is connected with the lower machine through data transmission network;The lower machine is connected with the switching mechanism subsystem and the load subsystem through data transmission line;The switching mechanism is connected with the gas turbine real-time simulation system through RS485 serial port wiring module.

[0011] Further, the gas turbine real-time simulation model comprises a gas generator model, a switching mechanism model, a power turbine model and a fuel controller model.

[0012] Further, the PLC measurement and control system comprises a data acquisition module and a data output module, the data acquisition module is used to acquire the electric push rod displacement signal, the electric push rod stress signal, the inner and outer duct flow pipe flow signals, the load subsystem speed and torque signals, the data output module is used to output the control instructions of the frequency converter controller and the first servo controller, the control instruction of the frequency converter controller is used for setting the centrifugal air source fan speed, and the control instruction of the first servo controller is used for setting the first drive motor speed.

[0013] A test method based on the semi-physical test system of the reversible gas turbine: the first host computer sends initial load working condition information and electric push rod state information to the second host computer; the second host computer calculates control signals according to the gas turbine real-time simulation model and transmits the control signals to the lower computer through the data transmission network; the PLC measurement and control system in the lower computer calculates speed setting values and inputs the speed setting values into the frequency converter controller and the first servo controller respectively; the frequency converter controller controls the frequency conversion motor to drive the centrifugal air source fan to work, and the first servo controller controls the first drive motor to drive the electric eddy current dynamometer to work; the switching mechanism does not work and keeps the initial state, that is, the switching baffle is on the outer duct side and the inner duct flow pipe is closed; the torque, speed of the electric eddy current dynamometer and the flow data of the outer duct flow pipe are fed back to the second host computer through the data transmission network, the gas turbine real-time simulation model, the load subsystem and the switching mechanism subsystem are stably operated, and the current semi-physical test system of the reversible gas turbine is operated in the forward driving mode.

[0014] Further, the method for switching from the forward driving mode to the reverse driving mode comprises the following steps:

[0015] The first host computer sends a gas turbine load reduction working condition switching instruction to the second host computer; the second host computer calculates control signals according to the gas turbine real-time simulation model and transmits the control signals to the lower computer through the data transmission network; the PLC measurement and control system in the lower computer calculates speed setting values and inputs the speed setting values into the frequency converter controller and the first servo controller respectively; the frequency converter controller controls the frequency conversion motor to reduce the speed of the centrifugal air source fan, the first servo controller controls the first drive motor to reduce the speed of the electric eddy current dynamometer, and the rest of the semi-physical test system of the reversible gas turbine keeps the state unchanged;

[0016] After the semi-physical test system of the reversible gas turbine is stably operated in the reduced condition, the first host computer directly sends a control instruction to the switching mechanism, the switching mechanism starts to work, the second servo controller controls the electric push rod to work through the second drive motor, the switching baffle is switched from the outer duct side to the inner duct side, and displacement and stress data of the electric push rod are fed back to the first host computer; the first host computer feeds back the displacement and stress data of the electric push rod to the second host computer, the second host computer feeds back a speed signal to the lower computer in real time according to a change of the load speed of the gas turbine simulation model from positive to negative, the PLC measurement and control system of the lower computer calculates a speed setting value and inputs the speed setting value to the first servo controller, the first servo controller makes the eddy current dynamometer work from positive rotation to reverse rotation through the first drive motor, the centrifugal air source fan keeps unchanged, and the current semi-physical test system of the reversible gas turbine is in the intermediate switching mode.

[0017] When the switching baffle is at the inner duct side, the outer duct flow pipe is closed, the switching mechanism stops working, and the current semi-physical test system of the reversible gas turbine is in the reverse rotation mode.

[0018] A computer device / system, comprising a memory, a processor and a computer program stored on the memory, wherein the processor executes the computer program to realize the steps of the test method based on the semi-physical test system of the reversible gas turbine.

[0019] A computer readable storage medium, wherein a computer program / instruction is stored on the computer readable storage medium, and the computer program / instruction is executed by a processor to realize the steps of the test method based on the semi-physical test system of the reversible gas turbine.

[0020] A computer program product, comprising a computer program / instruction, and the computer program / instruction is executed by a processor to realize the steps of the test method based on the semi-physical test system of the reversible gas turbine.

[0021] The present application has the following beneficial effects:

[0022] The present application can realize semi-physical real-time closed-loop simulation of the reversible gas turbine, can realize research on working characteristics of the reversible gas turbine in forward rotation, reverse rotation and switching between forward rotation and reverse rotation, can realize combination of a digital simulation model of the gas turbine and a real load, can realize semi-physical test and verification of functions and performances in real time and in a closed loop, can reduce risks and costs of tests of the reversible gas turbine, can provide a theoretical basis and technical support for research on the reversible gas turbine, and can lay a foundation for environment simulation and digital twinning of the gas turbine. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1It is a general schematic diagram of a semi-physical test system of a reverseable gas turbine in the application. DETAILED DESCRIPTION

[0024] The application will be further described below with reference to the drawings.

[0025] Reference Figure 1 A semi-physical test system of a reverseable gas turbine, comprising a gas turbine real-time simulation system 1, a lower computer 2, a switching mechanism subsystem 3 and a load subsystem 4.

[0026] The load subsystem comprises a first servo controller, a first driving motor, a torque instrument and an eddy current dynamometer; the first servo controller is used to control the first driving motor, the first driving motor is used to drive the eddy current dynamometer, and the torque instrument is used to collect the torque when the eddy current dynamometer works.

[0027] The switching mechanism subsystem comprises a frequency conversion controller, a frequency conversion motor, a centrifugal air source fan, a switching mechanism, an inner duct flow pipeline and an outer duct flow pipeline; the frequency conversion controller is used to control the frequency conversion motor, and the frequency conversion motor is used to drive the centrifugal air source fan; the switching mechanism comprises a second servo controller, a second driving motor, an electric push rod, a switching baffle and a shunt pipeline; the switching baffle is arranged in the shunt pipeline, the inlet of the shunt pipeline is connected with the output end of the centrifugal air source fan, the shunt pipeline has two groups of outlets and is connected with the inner duct flow pipeline and the outer duct flow pipeline respectively, one section of the inner duct flow pipeline and the outer duct flow pipeline is selected as a flow measurement pipeline respectively, and the flow measurement pipeline is provided with a vortex flowmeter; the second servo controller is used to control the second driving motor, and the second driving motor is used to drive the electric push rod; the electric push rod is connected with the switching baffle, and a torque sensor is arranged on the electric push rod and used to measure the force condition of the electric push rod in the switching process.

[0028] The electric push rod is used to drive the switching baffle to rotate; when the switching baffle is at the outer duct side, the inner duct flow pipeline is closed, and at this time, the gas state under the forward running of the reverseable turbine of the simulated gas turbine is simulated; when the switching baffle is at the inner duct side, the outer duct flow pipeline is closed, and at this time, the gas state under the reverse running of the reverseable turbine of the simulated gas turbine is simulated; when the switching baffle is between the two sides, the switching state of the gas in the inner and outer ducts of the reverseable turbine of the simulated gas turbine is simulated.

[0029] The gas turbine real-time simulation system comprises a first host computer and a second host computer; the first host computer is used for monitoring, controlling and alarming of the simulation process, and storing and displaying of simulation data; the second host computer is used for controlling a gas turbine real-time simulation model, the gas turbine real-time simulation model comprising a gas generator model, a switching mechanism model, a power turbine model and a fuel controller model; a lower computer comprises a PLC measurement and control system, which is used for controlling a frequency converter and a first servo controller; the PLC measurement and control system comprises a data acquisition module and a data output module, the data acquisition module being used for acquiring a displacement signal of an electric push rod, a force signal of the electric push rod, flow signals of an inner duct flow pipe and an outer duct flow pipe, a rotational speed signal and a torque signal of a load subsystem, and the data output module being used for outputting control instructions of the frequency converter and the first servo controller, the control instruction of the frequency converter being used for setting a rotational speed of a centrifugal gas source fan, and the control instruction of the first servo controller being used for setting a rotational speed of a first driving motor.

[0030] The first host computer and the second host computer are connected through UDP communication, the gas turbine real-time simulation system is connected with the lower computer through a data transmission network, the lower computer is connected with the switching mechanism subsystem and the load subsystem through data transmission lines, and the switching mechanism is connected with the gas turbine real-time simulation system through an RS485 serial port wiring module.

[0031] The second host computer of the gas turbine real-time simulation system simulates and real-time monitors and displays the running parameters of the gas turbine real-time simulation model sent by the first host computer, the running parameters of the switching mechanism subsystem sent by the data transmission network and the running parameters of the load subsystem, and stores the simulation data in real time, which is used for analyzing and verifying the working characteristics of the reversible gas turbine. Meanwhile, the second host computer of the gas turbine real-time simulation system sends rotational speed control instructions to the load subsystem and the switching mechanism subsystem through the data transmission network, and sends electric push rod control instructions to the switching mechanism through RS485 serial port communication, so as to form a semi-physical closed-loop simulation test of the reversible gas turbine.

[0032] The main running parameters involve: cross-section parameters of the gas turbine real-time simulation model, displacement of the electric push rod, torque of the electric push rod, inner and outer duct flow, torque and rotational speed of the load system; and the main control instructions involve: rotational speed control of the frequency converter, rotational speed control of the first servo controller, rotational speed control of the second servo controller, displacement, direction and speed control of the electric push rod.

[0033] A semi-physical test method of a reversible gas turbine, comprising the following contents:

[0034] The first host computer sends initial load working condition information and electric push rod state information to the second host computer; the second host computer calculates control signals according to a gas turbine real-time simulation model and transmits the control signals to the lower computer through a data transmission network; a PLC measurement and control system in the lower computer calculates a rotating speed setting value and inputs the rotating speed setting value to a frequency conversion controller and a first servo controller; the frequency conversion controller controls a variable frequency motor to drive a centrifugal air source fan to work, and the first servo controller controls a first driving motor to drive an eddy current dynamometer to work; a switching mechanism is not working, and an initial state is maintained, that is, a switching baffle is at the outer duct side, and an inner duct flow pipe is closed; torque, rotating speed and flow data of the eddy current dynamometer and the outer duct flow pipe are fed back to the second host computer through the data transmission network, the gas turbine real-time simulation model, a load subsystem and a switching mechanism subsystem are stably operated, and the current semi-physical test system of the reversible gas turbine is operated in the forward driving mode.

[0035] When the forward driving mode is switched to the reverse driving mode:

[0036] The first host computer sends a gas turbine load working condition switching instruction to the second host computer; the second host computer calculates control signals according to the gas turbine real-time simulation model and transmits the control signals to the lower computer through the data transmission network; the PLC measurement and control system in the lower computer calculates a rotating speed setting value and inputs the rotating speed setting value to the frequency conversion controller and the first servo controller; the frequency conversion controller controls the variable frequency motor to reduce the rotating speed of the centrifugal air source fan, and the first servo controller controls the first driving motor to reduce the rotating speed of the eddy current dynamometer, and the rest of the semi-physical test system of the reversible gas turbine remains unchanged;

[0037] After the semi-physical test system of the reversible gas turbine is stably operated in the reduced working condition, the first host computer directly sends a control instruction to the switching mechanism, the switching mechanism starts to work, the second servo controller controls the electric push rod to work through the second driving motor, the switching baffle is switched from the outer duct side to the inner duct side, and displacement and stress data of the electric push rod are fed back to the first host computer; the first host computer feeds back the displacement and stress data of the electric push rod to the second host computer, the second host computer feeds back a rotating speed signal to the lower computer in real time according to a change of the load rotating speed from positive to negative of the gas turbine real-time simulation model, the PLC measurement and control system of the lower computer calculates a rotating speed setting value and inputs the rotating speed setting value to the first servo controller, the first servo controller controls the first driving motor to make the eddy current dynamometer work from positive to negative, the centrifugal air source fan remains unchanged, and the current semi-physical test system of the reversible gas turbine is in the intermediate switching working mode.

[0038] When the switching baffle is at the inner duct side, the outer duct flow pipe is closed, the switching mechanism stops working, and the current semi-physical test system of the reversible gas turbine is operated in the reverse driving mode.

[0039] The operating data of the gas turbine real-time simulation model, load subsystem and switching mechanism subsystem are recorded to analyze and verify the working characteristics of the reversible gas turbine.

[0040] The data of important parameters of the semi-physical test system are transmitted to the first host computer through the data interface for display, storage and real-time simulation model of the gas turbine, including parameters such as combustion chamber outlet temperature, high-pressure shaft speed, low-pressure shaft speed, power turbine speed, power turbine output torque, low-pressure turbine exhaust temperature, high and low-pressure compressor output pressures and high and low-pressure turbine output pressures. The first host computer controls the working conditions of the reversible semi-physical test system through the data interface. Based on the full load power, the first host computer sends a forward working condition instruction to realize the forward operation of the reversible gas turbine (simulating the forward operation of the marine gas turbine), sends a forward lowering working condition instruction to realize the forward deceleration operation of the reversible gas turbine; sends an electric push rod control instruction to realize the switching of the reversible gas turbine from forward to reverse or reverse to forward (simulating the switching of the marine gas turbine from forward to reverse); sends a reverse raising working condition instruction to realize the reverse acceleration operation of the reversible gas turbine.

[0041] The semi-physical test system for a reversible gas turbine provided by the present invention can realize an intuitive display of the working status of the entire test system and can display the working status of the main components of the system through a two-dimensional screen; the software can realize monitoring of the key hardware status in the test system; it can connect with other subsystems through a network interface to realize status control and parameter display of other subsystems, and realize the switching of the working process of the reversible gas turbine from forward working condition, intermediate switching working condition, and reverse working condition.

[0042] The present invention can realize semi-physical real-time closed-loop simulation of a reversible gas turbine, can realize the working characteristic research of forward, reverse, and forward-reverse switching of a reversible gas turbine, can realize the combination of the digital simulation model of the gas turbine with the real load, and conduct real-time, closed-loop semi-physical testing and verification of functions and performance, study the working characteristics of the reversible gas turbine, reduce the risk and cost of the reversible gas turbine test, provide theoretical basis and technical support for the research of the reversible gas turbine, and lay the foundation for the environmental simulation and digital twin of gas turbine hardware.

[0043] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A semi-physical test system for a reversible gas turbine, characterized by: It includes gas turbine real-time simulation system, lower computer, load subsystem and switching mechanism subsystem; The load subsystem includes a first servo controller, a first drive motor, a torque meter and an eddy current dynamometer; the first servo controller is used to control the first drive motor, the first drive motor is used to drive the eddy current dynamometer, and the torque meter is used to collect the torque of the eddy current dynamometer when it is working; The switching mechanism subsystem includes a frequency conversion controller, a frequency conversion motor, a centrifugal air source fan, a switching mechanism, an inner channel flow pipe and an outer channel flow pipe; the frequency conversion controller is used to control the frequency conversion motor, and the frequency conversion motor is used to drive the centrifugal air source fan; the switching mechanism includes a second servo controller, a second drive motor, an electric push rod, a switching baffle and a diversion pipe; the switching baffle is arranged in the diversion pipe, the inlet of the diversion pipe is connected to the output end of the centrifugal air source fan, the diversion pipe has two sets of outlets, which are respectively connected to the inner channel flow pipe and the outer channel flow pipe, and a section is selected from the inner channel flow pipe and the outer channel flow pipe as a flow measurement pipe, and the flow measurement pipe is equipped with a vortex flowmeter; the second servo controller is used to control the second drive motor, and the second drive motor is used to drive the electric push rod, which is connected to the switching baffle, and a torque sensor is provided on the electric push rod to measure the force applied to the electric push rod during the switching process; The gas turbine real-time simulation system includes a first host computer and a second host computer; the first host computer is used for monitoring, controlling and alarming the simulation process and storing and displaying simulation data; the second host computer is used for controlling the gas turbine real-time simulation model; the lower computer includes a PLC measurement and control system for controlling the frequency conversion controller and the first servo controller.

2. The reversible gas turbine semi-physical test system according to claim 1, characterized in that: The electric push rod is used to drive the switching baffle to rotate; when the switching baffle is on the outer duct side, the inner duct flow pipe is closed, and this simulates the gas state of the gas turbine when the reversing turbine is running forward; when the switching baffle is on the inner duct side, the outer duct flow pipe is closed, and this simulates the gas state of the gas turbine when the reversing turbine is running reversely; when the switching baffle is between the two sides, it simulates the gas turbine reversing turbine switching state between the inner and outer ducts.

3. The reversible gas turbine semi-physical test system according to claim 1, characterized in that: The first host computer and the second host computer are connected through UDP communication, the gas turbine real-time simulation system is connected to the lower computer through a data transmission network, the lower computer is connected to the switching mechanism subsystem and the load subsystem through a data transmission line, and the switching mechanism and the gas turbine real-time simulation system are connected through an RS485 serial port wiring module.

4. The reversible gas turbine semi-physical test system according to claim 1, characterized in that: The gas turbine real-time simulation model includes a gas generator model, a switching mechanism model, a power turbine model and a fuel controller model.

5. The reversible gas turbine semi-physical test system according to claim 1, characterized in that: The PLC measurement and control system includes a data acquisition module and a data output module. The data acquisition module is used to obtain the displacement signal of the electric push rod, the force signal of the electric push rod, the flow signals of the inner channel flow pipe and the outer channel flow pipe, and the speed and torque signals of the load subsystem. The data output module is used to output control instructions of the frequency conversion controller and the first servo controller. The control instructions of the frequency conversion controller are used to set the speed of the centrifugal air source fan, and the control instructions of the first servo controller are used to set the speed of the first drive motor.

6. A test method for a reversible gas turbine semi-physical test system according to claim 1, characterized in that: The first host computer sends the initial load condition information and the electric push rod status information to the second host computer; the second host computer calculates the control signal according to the gas turbine real-time simulation model and transmits it to the lower computer through the data transmission network; the PLC measurement and control system in the lower computer calculates the speed setting value and inputs it into the frequency conversion controller and the first servo controller respectively; the frequency conversion controller controls the frequency conversion motor to drive the centrifugal air source fan to work, and the first servo controller controls the first drive motor to drive the eddy current dynamometer to work; the switching mechanism does not work and maintains the initial state, that is, the switching baffle is on the outer duct side, and the inner duct flow pipe is closed; the torque, speed and flow data of the eddy current dynamometer and the outer duct flow pipe are fed back to the second host computer through the data transmission network, the gas turbine real-time simulation model, load subsystem and switching mechanism subsystem are operating stably, and the current reversible gas turbine semi-physical test system is operating in the forward mode.

7. The test method of the reversible gas turbine semi-physical test system according to claim 6, characterized in that: The method of switching from the forward working mode to the reverse working mode is also included, specifically: The first host computer sends a gas turbine load reduction operating condition switching instruction to the second host computer; the second host computer calculates a control signal based on a real-time simulation model of the gas turbine and transmits it to the lower computer via a data transmission network; the PLC measurement and control system in the lower computer calculates a speed setting value and inputs it into the frequency conversion controller and the first servo controller respectively; the frequency conversion controller controls the frequency conversion motor to reduce the speed of the centrifugal air source blower, and the first servo controller reduces the speed of the eddy current dynamometer via the first drive motor, while the other parts of the reversible gas turbine semi-physical test system remain unchanged; After the reversible gas turbine semi-physical test system has been stably operated under reduced operating conditions, the first host computer directly sends a control instruction to the switching mechanism, the switching mechanism starts working, the second servo controller controls the operation of the electric push rod through the second drive motor, the switching baffle switches from the outer duct side to the inner duct side, and the displacement and force data of the electric push rod are fed back to the first host computer; the first host computer feeds back the displacement and force data of the electric push rod to the second host computer, and the second host computer feeds back the speed signal to the lower computer through the data transmission network in real time according to the change of the load speed of the gas turbine real-time simulation model from positive to negative, the PLC measurement and control system of the lower computer calculates the speed setting value and inputs it to the first servo controller, and the first servo controller switches the eddy current dynamometer from forward to reverse operation through the first drive motor, and the centrifugal air source fan remains in the same state. The current reversible gas turbine semi-physical test system is in the intermediate switching working mode; When the switching damper is on the inner duct side, the outer duct flow pipe is closed, the switching mechanism stops running, and the current reversible gas turbine semi-physical test system is operating in the reversing working mode.

8. A computer device / apparatus / system comprising a memory, a processor, and a computer program stored in the memory, characterized in that: The processor executes the computer program to implement the steps of the method according to any one of claims 6 to 7.

9. A computer-readable storage medium having a computer program / instruction stored thereon, characterized in that: When the computer program / instructions are executed by a processor, the steps of the method according to any one of claims 6 to 7 are implemented.

10. A computer program product comprising a computer program / instructions, characterized in that: When the computer program / instructions are executed by a processor, the steps of the method according to any one of claims 6 to 7 are implemented.

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