Turbine power obtaining method and device

Abstract

The invention provides a turbine power obtaining method and device, and the method comprises the steps: testing a test turbine under a test working condition, and obtaining the turbine actual measurement power measured by a dynamometer; after the test turbine completes the test, the test turbine is controlled to run down; the rotor energy change rate of the test turbine in the running-down process is obtained, and the moving blade blast power of the test turbine at the running-down rotating speed is obtained based on computational fluid dynamics (CFD); and obtaining the real power of the test turbine according to the turbine actual measurement power, the rotor energy change rate and the moving blade blast power, so that the real power of the test turbine can be obtained under the condition that the manufacturing cost, the dismounting workload and the test period of the test turbine are not increased, the efficiency of obtaining the real power of the test turbine is improved, and the test efficiency is improved. And the cost of obtaining the real power of the test turbine is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of gas turbines, and in particular to a method and device for obtaining turbine power. Background Art

[0002] The gas turbine is one of the three major components of a heavy-duty gas turbine. It has high technical difficulty and great development risk. The basic path of research and development work is to verify the design in stages through a series of special tests to gradually release the risk. The turbine test constructs the heat-to-power conversion mechanism of a high-temperature gas turbine and a real flow environment including unsteady effects, viscosity effects and three-dimensional flow effects. It has the function of systematically verifying the aerodynamic and cooling performance of the turbine. It is one of the important tests in the development of gas turbines. However, in related technologies, the process of obtaining the true power of the turbine is often more complicated and costly. Therefore, how to efficiently obtain the true power of the turbine while reducing the cost of obtaining the true power of the turbine has become a problem that needs to be solved urgently. Summary of the invention

[0003] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0004] According to the first aspect of the present application, a method for obtaining turbine power is provided, comprising: testing a test turbine under test conditions to obtain the actual power of the turbine measured by a dynamometer; after the test turbine completes the test, controlling the test turbine to enter idling; obtaining the rotor energy change rate of the test turbine during the idling process; and based on computational fluid dynamics (CFD), obtaining the moving blade blowing power of the test turbine at the idling speed; and obtaining the real power of the test turbine based on the actual power of the turbine, the rotor energy change rate and the moving blade blowing power.

[0005] According to a second aspect of the present application, a device for acquiring turbine power is provided, comprising: a first acquisition module, used to test a test turbine under test conditions to acquire the actual power of the turbine measured by a dynamometer; a control module, used to control the test turbine to enter idling after the test turbine completes the test; a second acquisition module, used to acquire the rotor energy change rate of the test turbine during the idling process, and based on computational fluid dynamics (CFD), acquire the moving blade blowing power of the test turbine at the idling speed; a determination module, used to acquire the real power of the test turbine based on the actual power of the turbine, the rotor energy change rate and the moving blade blowing power.

[0006] The technical solution provided by the embodiments of the present application includes at least the following beneficial effects: The present application provides a method for obtaining turbine power. In the test, the present application eliminates the disk cavity blowing loss and rotor bearing friction loss of the test turbine. The real power of the test turbine can be determined without increasing the manufacturing cost, disassembly and assembly workload and test cycle of the test turbine. The heat-to-work conversion efficiency of the test turbine can be better determined, and the efficiency of obtaining the real power of the test turbine is improved. At the same time, the cost of determining the real power of the test turbine is reduced, and there is no need to use a rotor drive device. This solution can be applied to various types of turbine test benches and has wide applicability.

[0007] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present application. Figure 1 A schematic diagram of a flow chart of a method for obtaining turbine power provided in an embodiment of the present application; Figure 2 A schematic diagram of the structure of a turbine test bench provided in an embodiment of the present application; Figure 3 A schematic diagram of replacing a test turbine moving blade with a flat blade provided in an embodiment of the present application; Figure 4 A schematic flow chart of another method for obtaining turbine power provided in an embodiment of the present application; Figure 5 A schematic diagram of the structure of a turbine power acquisition device provided in an embodiment of the present application.

[0009] Figure 2 Figure markings: 1-main air intake filter; 2-main air intake pipe; 3-main air exhaust pipe; 4-main air flow measuring device; 5-heater; 6-exhaust pipe; 7-cold air intake filter; 8-cold air exhaust pipe; 9-cold air flow measuring device; 10-cold air distribution tank; 11-intake volute; 12-test piece; 13-exhaust volute; 14-exhaust pipe; 15-lubricating oil pump; 16-lubricating oil tank; 17-return oil pump; 18-oil filter; 19-drain well; 20-dynamometer. DETAILED DESCRIPTION

[0010] The following is a description of exemplary embodiments of the present application in conjunction with the accompanying drawings, including various details of the embodiments of the present application to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0011] The method for obtaining turbine power of the present application is described in detail below using an embodiment.

[0012] Figure 1 A flow chart of a method for obtaining turbine power provided in an embodiment of the present application.

[0013] like Figure 1 As shown, the method for obtaining turbine power proposed in this embodiment specifically includes the following steps: S101. Test the test turbine under test conditions to obtain the actual power of the turbine measured by a dynamometer.

[0014] In the embodiment of the present application, the main gas is controlled to enter the test turbine under the test condition, and the mechanical energy converted from the thermal energy of the main gas is transferred to the dynamometer for power measurement to obtain the actual power of the turbine measured by the dynamometer. .

[0015] For example, the turbine test bench structure is as follows Figure 2 As shown, under the test conditions, the main air enters the test turbine 12 (test piece) through the main air intake filter 1, the main air intake pipe 2, the main air exhaust pipe 3, the main air flow measurement device 4, the heater 5 and the intake volute 11. Inside the test turbine, the flow of the main air drives the blades to rotate, thereby driving the entire shaft system to rotate. In this process, the thermal energy of the main air is converted into the rotational mechanical energy of the shaft system, and the rotational mechanical energy is transmitted to the dynamometer 20 through the shaft system for power measurement to obtain the actual turbine power measured by the dynamometer. .

[0016] It should be noted that the actual power of the test turbine It consists of the following parts: The actual power of the turbine measured by the dynamometer , bearing friction loss power and turbine disc cavity blast loss power ,Right now , where the actual power of the test turbine is , bearing friction loss power and turbine disc cavity blast loss power It cannot be directly measured in turbine tests.

[0017] It should be noted that in the related art, in order to obtain the real power of the test turbine , it is necessary to carry out mechanical loss tests to measure the friction loss power of the bearings. and turbine disc cavity blast loss power The sum between is measured, such as Figure 3 As shown, the moving blades of the test turbine are replaced with flat blades to avoid the blowing loss power generated by the moving blades in the mechanical loss test. The dynamometer is used as a driving mechanism to accelerate the test turbine to the speed range of the turbine test, and the dynamometer driving power at multiple stable speeds is recorded. This driving power is used to offset the bearing power consumption and the turbine test piece disk power consumption, which is equal to the bearing friction loss power. and turbine disc cavity blast loss power The sum of the values ​​between the actual turbine power measured by the dynamometer and mechanical loss test The actual power of the test turbine can be obtained by summing .

[0018] However, the above scheme has several problems: (1) It is necessary to replace the moving blades of the test turbine with flat blades, which increases the manufacturing cost; (2) It is necessary to open the cylinder of the test turbine, remove the moving blades, and replace them with flat blades, which increases the disassembly and assembly workload of the test turbine; (3) It is necessary to dynamically balance the rotor of the test turbine and reinstall the instruments after replacing the flat blades, which increases the testing workload of the test turbine; (4) It is necessary to carry out mechanical loss tests, which increases the test cycle; (5) It is necessary to use a dynamometer with a driving function, which is not suitable for turbine test benches without external driving mechanisms, such as large turbine test benches using hydraulic dynamometers. This scheme cannot be implemented.

[0019] The method for obtaining turbine power provided in the present application can obtain the true power of the test turbine without replacing the flat blades, increasing the manufacturing cost, increasing the workload of disassembling and assembling the test turbine, increasing the workload of testing the test turbine, adding no additional test content and test cycle, and using no external driving mechanism. This solves the technical problems of increased cost, extended cycle, and limitation on dynamometer function that need to be solved in obtaining the true power of the turbine on a large turbine test bench.

[0020] S102. After the test turbine completes the test, control the test turbine to enter idling.

[0021] In an embodiment of the present application, after the test turbine completes the test, the current speed of the test turbine can be increased to the target speed, wherein the target speed is greater than the maximum speed in the test condition and less than a preset speed threshold, and the main gas supply and the absorbed power of the dynamometer are reduced until the absorbed power is reduced to the target value and the current speed of the test turbine is the target speed, and it is determined that the test turbine meets the initial conditions for entering idling, the bypass valve of the main gas is controlled to open, and the main gas supply valve is controlled to close after a set period of time, and it is determined that the inlet / outlet flow passages of the test turbine are connected to the atmosphere and the pressures of the inlet / outlet flow passages are equal to the atmospheric pressure, and the power consumption function of the dynamometer is controlled to be closed, and it is determined that the test turbine enters idling.

[0022] For example, in response to the test turbine completing the test and fully acquiring relevant test data, the current speed of the test turbine is increased to the target speed. In order to ensure the safety of the test turbine, the target speed must be less than the preset speed threshold. In the stage, the main gas supply volume can be gradually reduced and the absorbed power of the dynamometer can be reduced until the absorbed power of the dynamometer is reduced to the target value and the current speed of the test turbine is the target speed, wherein the target value can be a value close to 0. In this case, it is determined that the test turbine meets the initial conditions for entering idling, and then the bypass valve of the main gas is controlled to open, and the main gas supply valve is controlled to close after the set time, wherein the value interval of the set time can be [0.5s, 1s], etc., to determine that the inlet / outlet flow passages of the test turbine are connected to the atmosphere, and the pressures of the inlet / outlet flow passages are equal to the atmospheric pressure, and the power consumption function of the dynamometer is controlled to be closed, and the test turbine is determined to enter idling, and the speed continues to decrease. The test acquisition system promptly records the test data of the speed change process. After the idling speed of the test turbine is lower than the lowest speed in the test condition, the power consumption function of the dynamometer is turned on, the speed control of the test turbine is restored, and the test shutdown process is entered.

[0023] S103, obtaining the rotor energy change rate of the test turbine during the idling process, and obtaining the moving blade blowing power of the test turbine at the idling speed based on computational fluid dynamics (CFD).

[0024] It should be noted that during the idling process of the test turbine, the rotor energy is consumed by the bearing friction loss, the disk cavity blast loss of the test turbine, and the moving blade blast loss of the test turbine. According to the principle of energy conservation, the following energy conservation equation can be obtained:

[0025] in, is the rotor energy change rate, is the blowing power of the moving blades, is the friction loss power of the bearing, It is the power loss of disk cavity blowing.

[0026] In the embodiment of the present application, according to the above energy conservation equation, it can be known that the rotor energy change rate is Blowing power with moving blades The difference between the two is the friction loss power of the bearing and turbine disc cavity blast loss power The sum of .

[0027] In an embodiment of the present application, the rotor idling curve of the test turbine during the idling process can be obtained, and the rotor speed change rate can be determined based on the rotor idling curve to obtain the rotor speed and moment of inertia of the test turbine during the idling process. Based on the rotor speed change rate, speed and moment of inertia, the rotor energy change rate of the test turbine during the idling process can be obtained.

[0028] In the embodiment of the present application, the blowing power of the moving blades of the test turbine at the idling speed can be obtained based on computational fluid dynamics (CFD).

[0029] S104. Determine the real power of the test turbine based on the measured power of the turbine, the rotor energy change rate and the moving blade blowing power.

[0030] Among them, the measured power of the turbine is often lower than the real power of the test turbine.

[0031] In the embodiment of the present application, after obtaining the measured power of the turbine, the rotor energy change rate and the moving blade blast power, the real power of the test turbine can be determined according to the following formula: :

[0032] in, The measured power of the turbine is the rotor energy change rate, is the blowing power of the moving blades.

[0033] The method for obtaining turbine power provided in the present application tests the test turbine under test conditions to obtain the actual power of the turbine measured by the dynamometer. After the test turbine completes the test, the test turbine is controlled to enter idling to obtain the rotor energy change rate of the test turbine during idling, and based on computational fluid dynamics (CFD), the moving blade blowing power of the test turbine at the idling speed is obtained. According to the actual power of the turbine, the rotor energy change rate and the moving blade blowing power, the real power of the test turbine is obtained. Therefore, the present application eliminates the disk cavity blowing loss and rotor bearing friction loss of the test turbine in the test, and the real power of the test turbine can be obtained without increasing the manufacturing cost, disassembly and assembly workload and test cycle of the test turbine. The heat-to-work conversion efficiency of the test turbine can be better obtained, the efficiency of obtaining the real power of the test turbine is improved, and at the same time, the cost of obtaining the real power of the test turbine is reduced. There is no need to use a rotor drive device. This solution can be applicable to various types of turbine test benches and has a wide range of applicability.

[0034] Figure 4 A flow chart of a method for obtaining turbine power provided in an embodiment of the present application.

[0035] like Figure 4 As shown, the method for obtaining turbine power proposed in this embodiment specifically includes the following steps: S401. Test the test turbine under test conditions to obtain the actual power of the turbine measured by a dynamometer.

[0036] S402. After the test turbine completes the test, control the test turbine to enter idling.

[0037] The steps S401-S402 may be implemented in any of the implementation methods in the embodiments of the present application and will not be described in detail here.

[0038] S403, obtaining a rotor idling curve of the test turbine during idling, and determining a rotor speed change rate according to the rotor idling curve.

[0039] In the embodiment of the present application, the rotor idling curve of the test turbine during idling can be directly measured. , for time By taking the first-order derivative, we can get the rotor speed change rate .

[0040] S404, obtaining the rotor idling speed and rotor rotational inertia of the test turbine during the idling process.

[0041] S405. Obtain the rotor energy change rate of the test turbine during the idling process according to the rotor speed change rate, the rotor idling speed and the rotor rotational inertia.

[0042] In the embodiment of the present application, after obtaining the rotor speed change rate , rotor idling speed and rotor moment of inertia After that, the rotor energy change rate of the test turbine during idling is .

[0043] S406. Based on computational fluid dynamics (CFD), obtain the blowing power of the moving blades of the test turbine at the idling speed.

[0044] In an embodiment of the present application, the parameters of the blade flow passage of the test turbine during the CFD calculation process can be obtained, wherein the parameters include at least the structured grid, target turbulence model, numerical solver and target boundary conditions corresponding to the blade flow passage of the test turbine. According to the parameters, the blowing power of the moving blades of the test turbine at the idling speed is calculated to obtain the blowing power of the moving blades of the test turbine at the idling speed.

[0045] For example, the blade flow channel of the test turbine can be taken as the calculation object, and the structured grid is generated by the structured grid generation tool of the CFD software from the inlet of the first row of blades to the outlet of the last row of blades of the test turbine. The steady-state calculation function of the three-dimensional viscous compressible fluid of the CFD software is used. The target turbulence model can adopt the (Spalart-Allmaras, SA) model or (Shear Stress Transport, SST) model suitable for the analysis of the impeller machinery flow field. The boundary conditions at least include: the total temperature of the inlet boundary adopts the atmospheric temperature, the total pressure of the inlet boundary adopts the atmospheric pressure, the average static pressure of the outlet boundary adopts the atmospheric pressure, and the speed is set to the speed value corresponding to the turbine test condition. Each calculation example corresponds to a speed and the other boundary conditions are consistent with the conventional settings. According to the parameters, the moving blade blowing power of the test turbine at the idling speed is calculated to obtain the moving blade blowing power of the test turbine at the idling speed.

[0046] S407: Obtain the difference between the rotor energy change rate and the moving blade blowing power.

[0047] S408, obtaining the sum of the actually measured power of the turbine and the difference, and using the sum as the real power of the test turbine.

[0048] In the embodiment of the present application, the true power of the test turbine can be determined using the following formula:

[0049] in, The measured power of the turbine is the rotor energy change rate, is the blowing power of the moving blades.

[0050] In the embodiment of the present application, according to the above formula, for different speeds in the test turbine test conditions, , by obtaining , and , the real power of the test turbine can be obtained .

[0051] In summary, the method for obtaining turbine power provided in the present application tests the test turbine under test conditions to obtain the actual power of the turbine measured by the dynamometer; after the test turbine completes the test, the test turbine is controlled to enter idling, and the rotor idling curve of the test turbine during the idling process is obtained; according to the rotor idling curve, the rotor speed change rate is determined, and the rotor idling speed and rotor moment of inertia of the test turbine during the idling process are obtained; according to the rotor speed change rate, the rotor idling speed and the rotor moment of inertia, the rotor energy change rate of the test turbine during the idling process is obtained; the rotor energy change rate of the test turbine during the idling process is obtained; based on the computational fluid dynamics (CFD), the moving blade blowing power of the test turbine at the idling speed is obtained, and the rotor energy is obtained. The difference between the rate of change of the energy and the blowing power of the moving blades is obtained, and the sum of the power and the difference is obtained, and the sum is used as the real power of the test turbine. Therefore, the present application can obtain the real power of the test turbine according to the actually measured power of the turbine, the rate of change of the rotor energy and the blowing power of the moving blades, without replacing the flat blades, increasing the manufacturing cost, increasing the workload of disassembling and assembling the test turbine, increasing the workload of testing the test turbine, adding no additional test content and test cycle, and using no external driving mechanism. The efficiency of obtaining the real power of the test turbine is improved, and at the same time, the cost of obtaining the real power of the test turbine is reduced, solving the technical problems of increased cost, extended cycle, and limitation on the function of the dynamometer that need to be solved for obtaining the real power of the turbine on a large turbine test bench.

[0052] In order to implement the above embodiment, this embodiment provides a device for obtaining turbine power. Figure 5 A schematic diagram of the structure of a turbine power acquisition device provided in an embodiment of the present application.

[0053] like Figure 5 As shown, the turbine power acquisition device 1000 includes: a first acquisition module 110, a control module 120, a second acquisition module 130 and a determination module 140.

[0054] The first acquisition module 110 is used to test the test turbine under the test conditions and obtain the actual power of the turbine measured by the dynamometer; The control module 120 is used to control the test turbine to enter idling after the test turbine completes the test; A second acquisition module 130 is used to acquire the rotor energy change rate of the test turbine during the idling process, and acquire the moving blade blast power of the test turbine at the idling speed based on computational fluid dynamics (CFD); The determination module 140 is used to obtain the real power of the test turbine according to the measured power of the turbine, the rotor energy change rate and the moving blade blowing power.

[0055] In one embodiment of the present application, the first acquisition module 110 is also used to: control the main gas to enter the test turbine under test conditions, transfer the mechanical energy converted from the thermal energy of the main gas to the dynamometer for power measurement, so as to obtain the actual power of the turbine measured by the dynamometer.

[0056] In one embodiment of the present application, the process of controlling the test turbine to enter idling includes: increasing the current speed of the test turbine to a target speed, wherein the target speed is greater than the highest speed in the test condition and less than a preset speed threshold; reducing the main gas supply and the absorbed power of the dynamometer until the absorbed power is reduced to a target value and the current speed of the test turbine is the target speed, and determining that the test turbine meets the initial conditions for entering idling; controlling the bypass valve of the main gas to open, and controlling the main gas supply valve to close after a set period of time, and determining that the inlet / outlet flow passages of the test turbine are connected to the atmosphere and the pressures of the inlet / outlet flow passages are equal to the atmospheric pressure, and controlling the power consumption function of the dynamometer to close, and determining that the test turbine enters idling.

[0057] In one embodiment of the present application, the second acquisition module 130 is further used to: obtain the rotor idling curve of the test turbine during the idling process, and determine the rotor speed change rate based on the rotor idling curve; obtain the rotor idling speed and rotor rotational inertia of the test turbine during the idling process; and obtain the rotor energy change rate of the test turbine during the idling process based on the rotor speed change rate, the rotor idling speed and the rotor rotational inertia.

[0058] In one embodiment of the present application, the second acquisition module 130 is also used to: obtain parameters of the blade flow channel of the test turbine during the CFD calculation process, wherein the parameters at least include a structured grid, a target turbulence model, a numerical solver and a target boundary condition corresponding to the blade flow channel of the test turbine; and calculate the moving blade blowing power of the test turbine at the idling speed according to the parameters to obtain the moving blade blowing power of the test turbine at the idling speed.

[0059] In one embodiment of the present application, the determination module 140 is also used to: obtain the difference between the rotor energy change rate and the moving blade blowing power; obtain the sum of the turbine measured power and the difference, and use the sum as the true power of the test turbine.

[0060] The turbine power acquisition device provided in the present application tests the test turbine under test conditions to acquire the actual power of the turbine measured by the dynamometer. After the test turbine completes the test, the test turbine is controlled to enter idling to acquire the rotor energy change rate of the test turbine during idling, and based on computational fluid dynamics (CFD), the moving blade blowing power of the test turbine at the idling speed is acquired. The real power of the test turbine is acquired according to the actual power of the turbine, the rotor energy change rate and the moving blade blowing power. Therefore, the present application eliminates the disk cavity blowing loss and the rotor bearing friction loss of the test turbine in the test, and the real power of the test turbine can be acquired without increasing the manufacturing cost, disassembly and assembly workload and test cycle of the test turbine. The heat-to-work conversion efficiency of the test turbine can be better acquired, the efficiency of acquiring the real power of the test turbine can be improved, and at the same time, the cost of acquiring the real power of the test turbine can be reduced. There is no need to use a rotor drive device. The solution can be applicable to various types of turbine test benches and has a wide range of applicability.

[0061] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this application can be executed in parallel, sequentially or in different orders, as long as the expected results of the technical solution disclosed in this application can be achieved, and this document is not limited here.

[0062] The above specific implementations do not constitute a limitation on the protection scope of this application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included in the protection scope of this application.

Claims

1. A method for obtaining turbine power, characterized in that: The method comprises: Test the test turbine under test conditions to obtain the actual power of the turbine measured by the dynamometer; After the test turbine completes the test, controlling the test turbine to enter idling; Obtaining the rotor energy change rate of the test turbine during the idling process, and obtaining the moving blade blast power of the test turbine at the idling speed based on computational fluid dynamics (CFD); The real power of the test turbine is obtained according to the measured power of the turbine, the rotor energy change rate and the moving blade blowing power.

2. The method according to claim 1, characterized in that The step of testing the test turbine under the test conditions to obtain the actual power of the turbine measured by the dynamometer comprises: Under test conditions, the main gas is controlled to enter the test turbine, and the mechanical energy converted from the thermal energy of the main gas is transferred to the dynamometer for power measurement to obtain the actual power of the turbine measured by the dynamometer.

3. The method according to claim 1, characterized in that The process of controlling the test turbine to enter idling includes: Increasing the current rotation speed of the test turbine to a target rotation speed, wherein the target rotation speed is greater than the highest rotation speed in the test condition and less than a preset rotation speed threshold; reducing the supply of main air and the absorbed power of the dynamometer until the absorbed power is reduced to a target value and the current speed of the test turbine is the target speed, and determining that the test turbine meets the initial condition for entering idling; Control the bypass valve of the main gas to open, and control the gas supply valve of the main gas to close after a set period of time, determine that the inlet / outlet flow passages of the test turbine are connected to the atmosphere, and the pressures of the inlet / outlet flow passages are equal to the atmospheric pressure, control the power consumption function of the dynamometer to close, and determine that the test turbine enters idling.

4. The method according to claim 1, characterized in that The step of obtaining the rotor energy change rate of the test turbine during idling includes: Obtaining a rotor idling curve of the test turbine during idling, and determining a rotor speed change rate according to the rotor idling curve; Obtaining the rotor idling speed and rotor moment of inertia of the test turbine during idling; The rotor energy change rate of the test turbine during idling is obtained based on the rotor speed change rate, the rotor idling speed and the rotor rotational inertia.

5. The method according to claim 1, characterized in that The step of obtaining the blowing power of the moving blades of the test turbine at the idling speed based on computational fluid dynamics (CFD) includes: Acquiring parameters of the blade flow passage of the test turbine during CFD calculation, wherein the parameters at least include a structured grid, a target turbulence model, a numerical solver, and a target boundary condition corresponding to the blade flow passage of the test turbine; According to the parameters, the moving blade blast power of the test turbine at the idling speed is calculated to obtain the moving blade blast power of the test turbine at the idling speed.

6. The method according to claim 1, characterized in that The step of obtaining the real power of the test turbine according to the measured power of the turbine, the rotor energy change rate and the moving blade blowing power comprises: Obtaining the difference between the rotor energy change rate and the moving blade blowing power; The sum of the actually measured power of the turbine and the difference is obtained, and the sum is used as the real power of the test turbine.

7. A device for obtaining turbine power, characterized in that: The device comprises: A first acquisition module is used to test the test turbine under test conditions and obtain the actual power of the turbine measured by the dynamometer; A control module, used for controlling the test turbine to enter idling after the test turbine completes the test; A second acquisition module is used to acquire the rotor energy change rate of the test turbine during the idling process, and acquire the moving blade blast power of the test turbine at the idling speed based on computational fluid dynamics (CFD); The determination module is used to obtain the real power of the test turbine according to the measured power of the turbine, the rotor energy change rate and the moving blade blowing power.

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