Semi-physical test system, method and program for gas turbine capable of reversing and storage medium

Abstract

The invention belongs to the technical field of semi-physical tests, and particularly relates to a semi-physical test system, method and program for a gas turbine capable of reversing, and a storage medium. According to the invention, semi-physical real-time closed-loop simulation of the reversing gas turbine can be realized, research on working characteristics of the reversing gas turbine such as advancing, reversing and switching between advancing and reversing can be realized, a digital simulation model of the gas turbine can be combined with a real load, and semi-physical test verification work of real-time and closed-loop functions and performance can be carried out; the working characteristics of the reversing gas turbine are studied, the risk and cost of the reversing gas turbine test are reduced, a theoretical basis and technical support are provided for studying the reversing gas turbine, and meanwhile a foundation is laid for gas turbine hardware in environment simulation and digital twinning.

Description

Technical Field

[0001] The present invention belongs to the technical field of semi-physical testing, and in particular relates to a semi-physical testing system, method, program and storage medium for a reversible gas turbine. Background Art

[0002] Semi-physical simulation test is a test that has both physical entities and computer simulation models in the entire simulation process. The two are interconnected to form a closed-loop system. Semi-physical simulation avoids complex mathematical modeling by replacing the complex and difficult-to-build parts of the model with physical entities. On the other hand, compared with pure mathematical modeling, it is closer to the real physical environment, making the simulation and test results more reliable and accurate, which is conducive 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. As one of the main power units of ships, the inability to reverse directly is a major defect, which greatly affects the maneuverability of ships. In order to solve the reversing problem of gas turbine power systems, the concept of reversible gas turbines came into being. Compared with other traditional reversing methods such as adjustable pitch propellers and reversing gearboxes, reversible gas turbines can achieve reversing switching operations faster and improve the maneuverability of ships. At present, the research on reversible gas turbines mainly focuses on feasibility, aerodynamic calculations, and blast loss calculations, all of which are based on theoretical research. There are certain research gaps in the actual machine test of reversible gas turbines, the real-time simulation model of gas turbines, and the working characteristics test of the switching mechanism load system. However, as a complex and large complex system, the gas turbine, coupled with the forward and reverse switching, makes the working process of the gas turbine more complicated. If the test is directly carried out with the real object, first of all, the cost of the real object is expensive, and secondly, the forward and reverse switching process of the gas turbine is complicated, and there are uncertainties in the test, which poses huge safety risks. If semi-physical simulation is used to study reversible gas turbines, the cost and safety hazards in the test process can be avoided, and high-precision simulation of the dynamic characteristics of the gas turbine can be guaranteed. It can simulate some processes that are difficult to achieve in the simulation process and obtain some experimental data that are difficult to calculate in the digital simulation process, laying a foundation for the design and working characteristics research of reversible gas turbines. Summary of the invention

[0004] The object of the present invention is 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 conditions, as well as the acceleration and deceleration test during the forward and reverse process, to perform functional verification of the reversible gas turbine control system, and realize the forward and reverse function verification of the reversible gas turbine.

[0005] A reversible gas turbine semi-physical test system, comprising a gas turbine real-time simulation system, a lower computer, a load subsystem and a switching mechanism subsystem;

[0006] 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 when the eddy current dynamometer is working;

[0007] 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 shunt pipe; the switching baffle is arranged in the shunt pipe, the inlet of the shunt pipe is connected to the output end of the centrifugal air source fan, the shunt 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, the electric push rod is connected to the switching baffle, and a torque sensor is provided on the electric push rod to measure the force of the electric push rod during the switching process;

[0008] 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, which is used to control the frequency conversion controller and the first servo controller.

[0009] Furthermore, 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, at this time, the gas state of the gas turbine reversing turbine forward operation is simulated; when the switching baffle is on the inner duct side, the outer duct flow pipe is closed, at this time, the gas state of the gas turbine reversing turbine reverse operation is simulated; when the switching baffle is between the two sides, the gas turbine reversing turbine is simulated. The gas switching state between the inner and outer ducts.

[0010] Furthermore, the first host computer and the second host computer are connected via UDP communication, the gas turbine real-time simulation system is connected to the lower computer via a data transmission network, the lower computer is connected to the switching mechanism subsystem and the load subsystem via a data transmission line, and the switching mechanism is connected to the gas turbine real-time simulation system via an RS485 serial port wiring module.

[0011] Furthermore, 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.

[0012] Furthermore, 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 condition 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 signal 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.

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

[0014] Furthermore, the method of switching from the forward working mode to the reverse working mode is also included, which is specifically:

[0015] 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 according to a real-time simulation model of the gas turbine and transmits it to the lower computer through 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 reduces the speed of the centrifugal air source fan by controlling the frequency conversion motor, and the first servo controller reduces the speed of the eddy current dynamometer by the first drive motor, and the other parts of the reversible gas turbine semi-physical test system remain unchanged;

[0016] After the reversible gas turbine semi-physical test system is running stably 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 electric push rod to work through the second drive motor, the switch baffle is switched 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, 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 unchanged. The current reversible gas turbine semi-physical test system is in the intermediate switching working mode;

[0017] 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 running in the reversing working mode.

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

[0019] A computer-readable storage medium stores a computer program / instruction thereon. When the computer program / instruction is executed by a processor, the steps of a test method based on a reversible gas turbine semi-physical test system are implemented.

[0020] A computer program product comprises a computer program / instruction, which, when executed by a processor, implements the steps of a test method based on a reversible gas turbine semi-physical test system.

[0021] The beneficial effects of the present invention are:

[0022] The present invention can realize semi-physical real-time closed-loop simulation of a reversible gas turbine, can realize research on the working characteristics of forward, reverse, and forward-reverse switching of a reversible gas turbine, can realize the combination of a digital simulation model of a gas turbine with a real load, and conduct real-time, closed-loop semi-physical testing and verification of functions and performance, study the working characteristics of a reversible gas turbine, reduce the risk and cost of reversible gas turbine testing, provide a theoretical basis and technical support for research on reversible gas turbines, and lay the foundation for environmental simulation and digital twins of gas turbine hardware. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1The figure is a general schematic diagram of a semi-physical test system for a reversible gas turbine in the present invention. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings.

[0025] See also Figure 1 , a semi-physical test system for a reversible 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 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 when the eddy current dynamometer is working;

[0027] 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, the electric push rod is connected to the switching baffle, and a torque sensor is provided on the electric push rod to measure the force of the electric push rod during the switching process;

[0028] 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, at this time, the gas state of the gas turbine reversing turbine forward operation is simulated; when the switching baffle is on the inner duct side, the outer duct flow pipe is closed, at this time, the gas state of the gas turbine reversing turbine reverse operation is simulated; when the switching baffle is between the two sides, it simulates the gas turbine reversing turbine gas switching state between the inner and outer ducts.

[0029] 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 to control the gas turbine real-time simulation model, which includes a gas generator model, a switching mechanism model, a power turbine model and a fuel controller model; the lower computer includes a PLC measurement and control system, which is used to control the frequency conversion controller and the first servo controller; 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 electric push rod displacement signal, the force condition signal of the electric push rod, the flow signal of the inner channel flow pipe and the outer channel flow pipe, the speed and torque signal of the load subsystem, and the data output module is used to output the 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 gas source fan, and the control instructions of the first servo controller are used to set the speed of the first drive motor.

[0030] The first host computer is connected to the second host computer 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 is connected to 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 monitors the operating parameters of the gas turbine real-time simulation model sent by the first host computer, the operating parameters of the switching mechanism subsystem sent by the data transmission network, and the operating parameters of the load subsystem in real time, and stores the simulation data in real time for analysis and verification of the working characteristics of the reversible gas turbine. At the same time, the second host computer of the gas turbine real-time simulation system sends speed control instructions to the load subsystem and the switching subsystem through the data transmission network, and sends electric push rod control instructions to the switching mechanism through RS485 serial communication, thereby forming a semi-physical closed-loop simulation test of the reversible gas turbine.

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

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

[0034] Start the reversible gas turbine semi-physical test system. First, 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 of the 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 operate stably, and the current reversible gas turbine semi-physical test system is operating in the forward mode.

[0035] When switching from forward working mode to reverse working mode:

[0036] 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 according to a real-time simulation model of the gas turbine and transmits it to the lower computer through 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 reduces the speed of the centrifugal air source fan by controlling the frequency conversion motor, and the first servo controller reduces the speed of the eddy current dynamometer by the first drive motor, and the other parts of the reversible gas turbine semi-physical test system remain unchanged;

[0037] After the reversible gas turbine semi-physical test system is running stably 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 electric push rod to work through the second drive motor, the switch baffle is switched 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, 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 unchanged. The current reversible gas turbine semi-physical test system is in the intermediate switching working mode;

[0038] 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 running in the reversing working mode.

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

[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 the 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 pressure and high and low pressure turbine output pressure and other parameters. The first host computer controls the working condition 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 backward); 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 the monitoring of the key hardware status in the test system; it can be connected with other subsystems through a network interface to realize the status control and parameter display of other subsystems, and realize the switching of the working process of the reversible gas turbine from the forward working condition, the intermediate switching working condition, and the reversing working condition.

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

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A semi-physical test system for a reversible gas turbine, characterized in that: 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 when the eddy current dynamometer 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 shunt pipe; the switching baffle is arranged in the shunt pipe, the inlet of the shunt pipe is connected to the output end of the centrifugal air source fan, the shunt 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, the electric push rod is connected to the switching baffle, and a torque sensor is provided on the electric push rod to measure the force of 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, which is used to control the frequency conversion controller and the first servo controller.

2. A 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, at this time simulating the gas state of the gas turbine reversing turbine forward operation; when the switching baffle is on the inner duct side, the outer duct flow pipe is closed, at this time simulating the gas state of the gas turbine reversing turbine reverse operation; when the switching baffle is between the two sides, it simulates the gas turbine reversing turbine in the gas 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 via UDP communication, the gas turbine real-time simulation system is connected to the lower computer via a data transmission network, the lower computer is connected to the switching mechanism subsystem and the load subsystem via a data transmission line, and the switching mechanism is connected to the gas turbine real-time simulation system via 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 condition 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 signal 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 based on a semi-physical test system for a reversible gas turbine 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 solves 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 solves 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 of the 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, load subsystem and switching mechanism subsystem operate stably, and the current reversible gas turbine semi-physical test system is operating in the forward mode.

7. The test method of the semi-physical test system of a reversible gas turbine according to claim 6, characterized in that: The method of switching from the forward working mode to the reverse working mode is also included, which is 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 according to a real-time simulation model of the gas turbine and transmits it to the lower computer through 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 reduces the speed of the centrifugal air source fan by controlling the frequency conversion motor, and the first servo controller reduces the speed of the eddy current dynamometer by the first drive motor, and the other parts of the reversible gas turbine semi-physical test system remain unchanged; After the reversible gas turbine semi-physical test system is running stably 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 electric push rod to work through the second drive motor, the switch baffle is switched 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, 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 unchanged. 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 running in the reversing working mode.

8. A computer device / equipment / 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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