Multi-nozzle pelton turbine power regulation nozzle switching simulation method and device

Abstract

The invention discloses a power regulation nozzle switching simulation method for a multi-nozzle pelton turbine. The method comprises the following steps: establishing a mathematical model of a water delivery system and the multi-nozzle pelton turbine; obtaining a characteristic curve and a nozzle stroke flow curve of the multi-nozzle pelton turbine; pID program related parameters and a pelton turbine nozzle switching strategy are determined; performing simulation calculation on power regulation nozzle switching of the multi-nozzle pelton turbine; and macroscopic parameter extreme values and change curves in the power adjusting process are output. Compared with the prior art, the method has the following advantages that by means of the calculation method, nozzle switching of the multi-nozzle pelton turbine can be rapidly and stably completed, the power adjusting process of the pelton turbine in the actual scene is simulated, and reference is provided for safe and stable operation of a unit.

Description

Technical Field

[0001] The invention belongs to the technical field of dynamic modeling and model simulation in a transition process of a hydropower station, and in particular relates to a method and a device for simulating the switching of power regulating nozzles of a multi-nozzle Pelton turbine. Background Art

[0002] The Pelton turbine converts the pressure potential energy of the water flow into jet kinetic energy through a special water guide mechanism (water distribution ring pipe and nozzle, etc.), driving the runner to rotate. With its characteristics of adapting to higher water heads and wider operating range, it has become the core equipment for developing high-head hydropower energy. In order to improve the single-unit capacity and operating efficiency of the Pelton turbine, the Pelton turbine currently generally adopts a multi-nozzle design. However, the increase in the number of nozzles may aggravate the mutual interference of the water flow inside the runner, and at the same time bring about the problem of complex switching control between nozzles. Especially in the transition process of the Pelton turbine, due to the increase in the number of nozzles, in order to better adjust the output and flow, it is often necessary to switch and adjust the multi-nozzle of the Pelton turbine. During the nozzle switching process, the force and speed of the runner will fluctuate significantly, which will increase the complexity of the flow inside the runner and affect the safe and stable operation of the unit.

[0003] At present, there is still insufficient research on the nozzle switching process of multi-nozzle Pelton turbine power regulation. The main reasons are: 1. There is still a lack of experience in the nozzle switching strategy during the regulation process, and insufficient understanding of the changes in the mutual actions of the nozzles; 2. There is a lack of a relatively efficient and accurate simulation calculation method and system for quantitatively describing the nozzle switching process. With the gradual formation of a new power system with new energy as the main body, multi-nozzle Pelton turbines will increasingly frequently undertake the task of peak-shaving and valley-filling regulation. Efficient and accurate simulation calculation of the nozzle switching process of multi-nozzle Pelton turbines is very urgent. Therefore, it is very necessary to invent a multi-nozzle Pelton turbine power regulation nozzle switching simulation calculation method and device for the nozzle switching process. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a method and device for simulating nozzle switching for power regulation of a multi-nozzle Pelton turbine.

[0005] The present invention is achieved through the following technical solutions:

[0006] In a first aspect, a method for simulating nozzle switching of a multi-nozzle Pelton turbine power regulation is provided, comprising the following steps:

[0007] Establish mathematical models of water delivery system and multi-nozzle Pelton turbine;

[0008] Obtain the characteristic curve of multi-nozzle Pelton turbine and the nozzle stroke flow curve;

[0009] Determine the relevant parameters of the PID program and the nozzle switching strategy of the Pelton turbine;

[0010] Simulate the nozzle switching of multi-nozzle Pelton turbine power regulation;

[0011] The extreme values ​​and change curves of macro parameters during output power regulation.

[0012] In a possible implementation, the method for establishing the mathematical model includes:

[0013] Establish a model of the water delivery system; the model includes various parameters of the hydraulic nodes in the water delivery system;

[0014] A model of a multi-nozzle Pelton turbine is established; the model includes the operating state of the multi-nozzle Pelton turbine, the nozzle operation status, the nozzle switching point and the target power.

[0015] In a possible implementation, the multi-nozzle Pelton turbine characteristic curve includes a torque characteristic curve, a flow characteristic curve and a nozzle stroke flow curve corresponding to different numbers of nozzles working at target power;

[0016] Among them, the torque characteristic curve is used for interpolation calculation of Pelton turbine torque; the flow characteristic curve and nozzle stroke flow curve are used for interpolation calculation of nozzle flow.

[0017] Furthermore, the torque characteristic curves corresponding to the different numbers of nozzles partially overlap, so as to achieve equal torque switching of the torque characteristic curves during nozzle switching.

[0018] In a possible implementation, the PID program is used for power control in the power regulation process, and its related parameters include the proportional coefficient K p , integration coefficient K i , differential coefficient K d And the permanent slip coefficient b p ; The relevant parameters are obtained by trial and error;

[0019] The nozzle switching strategy of the Pelton turbine includes: when the power reaches the nozzle switching point, PID controls a certain number of nozzles to close according to a linear closing rule; and the PID program controls the nozzle opening of the remaining nozzles to compensate so as to keep the unit power unchanged during the switching process.

[0020] In a possible implementation, in the method for simulating the switching of nozzles for power regulation of a multi-nozzle Pelton turbine, the water delivery system is calculated using a one-dimensional characteristic line method, and the multi-nozzle Pelton turbine unit part provides the boundary conditions of the one-dimensional characteristic line method;

[0021] The simulation calculation method includes:

[0022] The PID program keeps the calculation model running steadily at the initial power;

[0023] Adjust the power to the nozzle switching point and keep it running stably at the switching point;

[0024] After the nozzle switching is completed, continue to adjust to the target power.

[0025] Furthermore, when the nozzle switching is completed, the torque characteristic curve switching corresponding to the different numbers of nozzles and the relative opening switching corresponding to the different working nozzles are completed at the same time;

[0026] Among them, the torque characteristic curve switching corresponding to different numbers of nozzles and the relative opening switching corresponding to different working nozzles adopt the equal torque switching method, and the formula is as follows:

[0027] m Current =m Qh

[0028] In the formula, m Current =f(k Current ,y Current ), m Qh =f(k Qh ,y Qh ), f(...,...) represents the functional relationship; k Current is the number of working nozzles before nozzle switching, y Current is the relative opening before nozzle switching; k Qh is the number of working nozzles after nozzle switching, y Qh is the relative opening after nozzle switching; m Current The unit torque of the turbine corresponding to the number of nozzles before nozzle switching; m Qh It is the unit torque of the turbine corresponding to the number of nozzles after nozzle switching.

[0029] In a possible implementation, the extreme values ​​of the macroscopic parameters include the extreme value of the water head at the annular pipe inlet, the peak-to-peak value of the power of the turbine unit during the nozzle switching process, and the peak-to-peak value of the rotation speed of the turbine unit during the nozzle switching process;

[0030] The variation curves include time variation curves of different nozzle openings, time variation curves of annular pipe inlet water head, time variation curves of power relative value and time variation curves of flow rate.

[0031] In a second aspect, a multi-nozzle Pelton turbine power regulation nozzle switching simulation device is provided, comprising:

[0032] Model building module, used to build mathematical models of water delivery system and multi-nozzle Pelton turbine;

[0033] A curve acquisition module, used to obtain a multi-nozzle Pelton turbine characteristic curve and a nozzle stroke flow curve;

[0034] Decision module, used to determine the relevant parameters of PID program and the nozzle switching strategy of Pelton turbine;

[0035] A calculation module, used for simulating the switching of nozzles for power regulation of a multi-nozzle Pelton turbine;

[0036] The output module is used to output the extreme values ​​and change curves of macro parameters during the power regulation process.

[0037] In a third aspect, an electronic device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the aforementioned multi-nozzle bucket turbine power regulation nozzle switching simulation method is implemented.

[0038] The role and effect of this application:

[0039] 1. This application realizes a simulation calculation method for switching nozzles of a multi-nozzle Pelton turbine power regulation, which can be used to quantitatively describe the switching process of nozzles of a multi-nozzle Pelton turbine power regulation, and provide a basis for fully exploring the changing rules of the switching process;

[0040] 2. This application can be used as the basis for optimizing the nozzle switching of Pelton turbine power regulation, providing accurate sample data for optimizing the nozzle switching process of the unit, and accelerating the optimization process of the nozzle switching process;

[0041] 3. The nozzle switching simulation calculation method and system provided in this application can quickly and accurately simulate the power regulation process of the Pelton turbine unit in actual scenarios, and obtain macro parameter information reflecting the actual situation, providing a reference for the safe and stable operation of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a flow chart of a multi-nozzle Pelton turbine power regulation nozzle switching simulation method involved in an embodiment of the present invention;

[0043] Figure 2 A diagram showing the change in nozzle opening and water head during the power regulation process of a multi-nozzle Pelton turbine according to an embodiment of the present invention;

[0044] Figure 3 A power and flow rate variation diagram of a multi-nozzle Pelton turbine power regulation process according to an embodiment of the present invention;

[0045] Figure 4 It is a structural schematic diagram of a multi-nozzle Pelton turbine power regulation nozzle switching simulation device provided by the present invention;

[0046] Figure 5 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0047] In order to facilitate ordinary technicians in the field to understand and implement the present invention, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments. The implementation examples described herein are only used to illustrate and explain the present invention, but the protection scope of the present invention is not limited to this.

[0048] See also Figure 1 , a multi-nozzle Pelton turbine power regulation nozzle switching simulation method provided in the present application, comprising the following steps:

[0049] S100, establish the mathematical model of the water delivery system and multi-nozzle Pelton turbine.

[0050] In a possible implementation, step S100 includes:

[0051] Establish a model of the water delivery system; the model includes various parameters of the hydraulic nodes in the water delivery system;

[0052] A model of a multi-nozzle Pelton turbine is established; the model includes the operating state of the multi-nozzle Pelton turbine, the nozzle operation status, the nozzle switching point (Qh_Point) and the target power (Target Power).

[0053] Furthermore, the water delivery system includes a water diversion tunnel, a pressure pipeline and a water distribution ring pipe which are connected in sequence; the pressure regulating chamber is connected to the water diversion tunnel.

[0054] Furthermore, the various parameters of the hydraulic nodes in the water supply system include: the elevation and area of ​​the surge chamber; the diameter and area of ​​the impedance hole; the length, diameter and area of ​​the pipeline, the head loss along the pipeline, the water flow direction and the pipeline wave velocity.

[0055] In this embodiment, the initial power is recorded as 1.0, the nozzle switching point Qh_Point=0.75, and the target power Target Power=0.65.

[0056] It should be noted that this embodiment uses a MATLAB script file to construct a mathematical model of a water delivery system and a Pelton turbine and to perform simulation calculations for nozzle switching of a turbine unit for power regulation.

[0057] S200, obtaining a characteristic curve of a multi-nozzle Pelton turbine and a nozzle stroke flow curve.

[0058] In a possible implementation, in step S200,

[0059] The multi-nozzle Pelton turbine characteristic curve includes a torque characteristic curve, a flow characteristic curve and a nozzle stroke flow curve corresponding to different numbers of nozzles working at target power;

[0060] Among them, the torque characteristic curve is used for interpolation calculation of Pelton turbine torque; the flow characteristic curve and nozzle stroke flow curve are used for interpolation calculation of nozzle flow.

[0061] Furthermore, the torque characteristic curves corresponding to the different numbers of nozzles partially overlap, which is used to adjust the equal torque switching of the torque characteristic curve during the nozzle switching process.

[0062] It should be noted that if the torque characteristic curves corresponding to different numbers of nozzles have intersections on some opening lines, they can be regarded as partially overlapping. The method described in this embodiment uses the torque characteristic curve graph to find out whether the torque characteristic curves corresponding to different numbers of nozzles have intersections on some opening lines to determine whether the torque characteristic curves corresponding to different numbers of nozzles partially overlap.

[0063] In this embodiment, the torque characteristic curve includes the torque characteristic curves corresponding to the operation of 6 nozzles and 4 nozzles, and at the same time ensures that the torque characteristic curve corresponding to the operation of 6 nozzles partially overlaps with the torque characteristic curve corresponding to 4 nozzles.

[0064] S300, determining PID program related parameters and Pelton turbine nozzle switching strategy.

[0065] In a possible implementation, in step S300, the PID program is used for power control in the power regulation process, and its related parameters include the proportional coefficient K p , integration coefficient K i , differential coefficient K d And the permanent slip coefficient b p ; The relevant parameters are obtained by trial and error;

[0066] The nozzle switching strategy of the Pelton turbine includes: when the power reaches the nozzle switching point (Qh_Point), PID controls a certain number of nozzles to close according to a linear closing rule; and the PID program controls the nozzle opening of the remaining nozzles to compensate so as to keep the unit power unchanged during the switching process.

[0067] Furthermore, the compensation method includes: reversely dividing the total opening of the closed nozzles and compensating the opening of each remaining nozzle.

[0068] In this embodiment, the nozzle switching strategy is selected as follows: when the unit power reaches the nozzle switching point Qh_Point = 0.75, PID controls two nozzles to close in a straight line within 10 seconds, and the remaining four nozzles are opened accordingly by PID control, and the openings of the four nozzles are compensated accordingly to keep the unit power unchanged at 0.75 during the switching process. Figure 2 shown.

[0069] It should be noted that the linear closing rule is: the two nozzles are linearly closed to 0 at a constant rate within 10 seconds at the opening degree at the switching moment.

[0070] S400, simulation calculation of nozzle switching for power regulation of multi-nozzle Pelton turbine.

[0071] In a possible implementation, during the simulation calculation process, the water delivery system is calculated using a one-dimensional characteristic line method, and the multi-nozzle Pelton turbine unit part provides boundary conditions of the one-dimensional characteristic line method.

[0072] Furthermore, the boundary conditions include the opening of each nozzle and the flow rate of each nozzle.

[0073] In a possible implementation, step S400 includes:

[0074] The PID program keeps the calculation model running steadily at the initial power;

[0075] Adjust the power to the nozzle switching point and keep it running stably at the switching point;

[0076] After the nozzle switching is completed, continue to adjust to the target power.

[0077] In this embodiment, the PID program first keeps the calculation model running stably at the initial power of 1.0, then adjusts to the nozzle switching point Qh_Point = 0.75, and keeps running stably at the switching point; after the nozzle switching is completed, continue to adjust to the target power Target Power = 0.65. The power adjustment process of this embodiment is as follows Figure 3 shown.

[0078] Furthermore, when the nozzle switching is completed, the torque characteristic curve switching corresponding to the different numbers of nozzles and the relative opening switching corresponding to the different working nozzles are completed at the same time;

[0079] Among them, the torque characteristic curve switching corresponding to different numbers of nozzles and the relative opening switching corresponding to different working nozzles adopt the equal torque switching method, and the formula is as follows:

[0080] m Current =m Qh

[0081] In the formula, m Current =f(k Current ,y Current ), m Qh =f(k Qh ,y Qh ), f(...,...) represents the functional relationship; k Current is the number of working nozzles before nozzle switching, y Current is the relative opening before nozzle switching; k Qh is the number of working nozzles after nozzle switching, y Qh is the relative opening after nozzle switching; m Curren t is the unit torque of the turbine corresponding to the number of nozzles before nozzle switching; m Qh It is the unit torque of the turbine corresponding to the number of nozzles after nozzle switching.

[0082] In this embodiment, m Current and m Qh are the torques corresponding to the relative power value of 0.75, k Current =6, k Qh =4;y Current =0.37,y Qh =0.71.

[0083] It should be noted that for the function relationship m Current =f(k Current ,y Current ), by using the nozzle number k on the 6-nozzle torque characteristic curve Current and relative opening y Current Interpolation is obtained; for the function relationship m Qh =f(k Qh ,y Qh ), by using the nozzle number k on the 4-nozzle torque characteristic curve Qh and relative opening y Qh Obtained by interpolation.

[0084] S500, extreme values ​​and change curves of macro parameters during output power regulation.

[0085] In one possible implementation, in step S500, the extreme values ​​of the macro parameters include the extreme value of the annular pipe inlet head, the peak-to-peak value of the turbine unit power during nozzle switching, and the peak-to-peak value of the turbine unit speed during nozzle switching; the change curve includes the time change curve of different nozzle openings, the time change curve of the annular pipe inlet head, the time change curve of the relative power value and the time change curve of the flow rate.

[0086] The multi-nozzle Pelton turbine power regulation nozzle switching simulation device provided by the present invention is described below. The multi-nozzle Pelton turbine power regulation nozzle switching simulation device described below and the multi-nozzle Pelton turbine power regulation nozzle switching simulation method described above can be referenced to each other.

[0087] Figure 4 Schematic diagram of the structure of the nozzle switching device for power regulation of a multi-nozzle Pelton turbine provided by an embodiment of the present invention. Figure 4 As shown, it includes: a model building module 41, a curve obtaining module 42, a decision module 43, a calculation module 44 and an output module 45, wherein:

[0088] A model building module 41 is used to establish a mathematical model of a water delivery system and a multi-nozzle Pelton turbine;

[0089] A curve acquisition module 42, used to obtain a multi-nozzle Pelton turbine characteristic curve and a nozzle stroke flow curve;

[0090] A decision module 43, for determining PID program related parameters and Pelton turbine nozzle switching strategy;

[0091] A calculation module 44, used for simulating the switching of nozzles for power regulation of a multi-nozzle Pelton turbine;

[0092] The output module 45 is used to output the extreme values ​​and change curves of macro parameters during the power regulation process.

[0093] Figure 5 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 5 As shown, the electronic device may include: a processor 510, a communication interface 520, a memory 530 and a communication bus 540, wherein the processor 510, the communication interface 520 and the memory 530 communicate with each other through the communication bus 540. The processor 510 may call the logic instructions in the memory 830 to execute the multi-nozzle Pelton turbine power regulation nozzle switching simulation method.

[0094] In addition, the logic instructions in the above-mentioned memory 530 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0095] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0096] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-nozzle Pelton turbine power regulation nozzle switching simulation method, characterized in that: The following steps are involved: Establish mathematical models of water delivery system and multi-nozzle Pelton turbine; Obtain the characteristic curve of multi-nozzle Pelton turbine and the nozzle stroke flow curve; Determine the relevant parameters of the PID program and the nozzle switching strategy of the Pelton turbine; Simulate the nozzle switching of multi-nozzle Pelton turbine power regulation; The extreme values ​​and change curves of macro parameters during output power regulation.

2. The multi-nozzle Pelton turbine power regulation nozzle switching simulation method according to claim 1, characterized in that: The method for establishing the mathematical model comprises: Establish a model of the water delivery system; the model includes various parameters of the hydraulic nodes in the water delivery system; A model of a multi-nozzle Pelton turbine is established; the model includes the operating state of the multi-nozzle Pelton turbine, the nozzle operation status, the nozzle switching point and the target power.

3. The multi-nozzle Pelton turbine power regulation nozzle switching simulation method according to claim 1, characterized in that: The multi-nozzle Pelton turbine characteristic curve includes a torque characteristic curve, a flow characteristic curve and a nozzle stroke flow curve corresponding to different numbers of nozzles working at target power; Among them, the torque characteristic curve is used for interpolation calculation of Pelton turbine torque; the flow characteristic curve and nozzle stroke flow curve are used for interpolation calculation of nozzle flow.

4. The multi-nozzle Pelton turbine power regulation nozzle switching simulation method according to claim 3, characterized in that: The torque characteristic curves corresponding to the different numbers of nozzles partially overlap, so as to realize equal torque switching of the torque characteristic curves during nozzle switching.

5. The multi-nozzle Pelton turbine power regulation nozzle switching simulation method according to claim 1, characterized in that: The PID program is used for power control in the power regulation process, and its related parameters include the proportional coefficient K p , integration coefficient K i , differential coefficient K d And the permanent slip coefficient b p ; The relevant parameters are obtained by trial and error; The Pelton turbine nozzle switching strategy includes: when the power reaches the nozzle switching point, a certain number of nozzles are closed according to a linear closing rule by PID control; The PID program controls the nozzle opening of the remaining nozzles to compensate in order to keep the unit power unchanged during the switching process.

6. The multi-nozzle Pelton turbine power regulation nozzle switching simulation method according to claim 1, characterized in that: In the method for simulating the switching of nozzles for power regulation of a multi-nozzle Pelton turbine, the water delivery system is calculated using a one-dimensional characteristic line method, and the multi-nozzle Pelton turbine unit part provides the boundary conditions of the one-dimensional characteristic line method; The simulation calculation method includes: The PID program keeps the calculation model running steadily at the initial power; Adjust the power to the nozzle switching point and keep it running stably at the switching point; After the nozzle switching is completed, continue to adjust to the target power.

7. The multi-nozzle Pelton turbine power regulation nozzle switching simulation method according to claim 6, characterized in that: When the nozzle switching is completed, the torque characteristic curve switching corresponding to the different numbers of nozzles and the relative opening switching corresponding to the different working nozzles are completed at the same time; Among them, the torque characteristic curve switching corresponding to different numbers of nozzles and the relative opening switching corresponding to different working nozzles adopt the equal torque switching method, and the formula is as follows: m Current =m Qh In the formula, m Current =f(k Current ,y Current ), m Qh =f(k Qh ,y Qh ), f(...,...) represents the functional relationship; k Current is the number of working nozzles before nozzle switching, y Current is the relative opening before nozzle switching; k Qh is the number of working nozzles after nozzle switching, y Qh is the relative opening after nozzle switching; m Current The unit torque of the turbine corresponding to the number of nozzles before nozzle switching; m Qh It is the unit torque of the turbine corresponding to the number of nozzles after nozzle switching.

8. The multi-nozzle Pelton turbine power regulation nozzle switching simulation method according to claim 1, characterized in that: The extreme values ​​of the macroscopic parameters include the extreme value of the water head at the annular pipe inlet, the peak-to-peak value of the power of the turbine unit during the nozzle switching process, and the peak-to-peak value of the rotation speed of the turbine unit during the nozzle switching process; The variation curves include time variation curves of different nozzle openings, time variation curves of annular pipe inlet water head, time variation curves of power relative value and time variation curves of flow rate.

9. A multi-nozzle Pelton turbine power regulation nozzle switching simulation device, characterized in that: include: Model building module, used to build mathematical models of water delivery system and multi-nozzle Pelton turbine; A curve acquisition module, used to obtain a multi-nozzle Pelton turbine characteristic curve and a nozzle stroke flow curve; Decision module, used to determine the relevant parameters of PID program and the nozzle switching strategy of Pelton turbine; A calculation module, used for simulating the switching of nozzles for power regulation of a multi-nozzle Pelton turbine; The output module is used to output the extreme values ​​and change curves of macro parameters during the power regulation process.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the multi-nozzle Pelton turbine power regulation nozzle switching simulation method is implemented as described in any one of claims 1 to 8.

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