Hydroelectric generating set and energy storage superposed control method and system for inhibiting reverse regulation of water attack

Abstract

The invention discloses a hydroelectric generating set and energy storage superposed control method and system for inhibiting water attack reverse adjustment, and relates to the technical field of hydroelectric generating set control, and the method comprises the steps: collecting the power output value of a hydroelectric generating set, the power output or absorption value of an energy storage device, and the guide vane opening value of the hydroelectric generating set in real time in the grid-connected normal operation process of the hydroelectric generating set; according to the power output value of the hydroelectric generating set, the guide vane opening value of the hydroelectric generating set and the power fluctuation value, the output or absorption power of the hydroelectric generating set and the combined energy storage device is calculated; the reverse adjustment phenomenon of the hydroelectric generating set is inhibited through the energy storage device, a power characteristic curve is created, and power output or absorption of the energy storage device is adjusted. According to the hydroelectric generating set and energy storage superposed control method and system for inhibiting the reverse regulation of the water attack, the regulation quality of the set is remarkably improved by inhibiting the reverse regulation phenomenon of the hydroelectric generating set, and the inhibition of the reverse regulation phenomenon is beneficial to ensuring the normal exertion of the primary frequency regulation function, so that the stability of the frequency of a power grid is better maintained.

Description

Technical Field

[0001] The present invention relates to the technical field of hydro-generator unit control, and particularly to a control method and system for suppressing water hammer reverse regulation by superimposing a hydro-generator unit and energy storage. Background Art

[0002] With the construction of large-scale hydro-generator units, the proportion of hydro-generator units in the power grid is also continuously increasing. The problem that hydro-generator units affect the frequency stability of the power system has gradually emerged. The quality of regulation and the reliability of operation of hydro-generator units directly affect the safe and reliable operation of hydro-generator sets and even the power system and the power quality. At present, when a hydro-generator unit makes a rapid adjustment, the reverse regulation caused by its water hammer effect is the most important factor affecting the regulation quality. The water hammer effect mainly refers to the situation under steady state. When the governor system of the unit makes a rapid adjustment, at the moment when the guide vane is opened (or closed), due to the influence of water flow inertia, the flow rate cannot increase (or decrease) immediately, but the water pressure drops (or rises) instantaneously, resulting in an instantaneous decrease (or increase) in the output of the water turbine. When the flow rate gradually increases (or decreases), the output of the unit begins to increase (or decrease).

[0003] At present, when a large-scale hydro-generator unit makes a rapid power adjustment, in order to suppress the power reverse regulation phenomenon caused by the rapid action of the unit's guide vane, generally, the control parameters are adjusted to reduce the action speed of the guide vane, and some also add a guide vane speed limit link to suppress the rapid action of the guide vane. Although to a certain extent, these methods can relatively suppress the generation of water hammer, but the too slow guide vane speed also affects the rapid response of the hydro-generator unit to the power grid during frequency fluctuations, and thus there are certain limitations.

[0004] Therefore, it is also very necessary to adopt a control method that superimposes an energy storage device and absorbs or releases power through the rapid power adjustment of the energy storage device during the reverse regulation process of the unit to suppress the reverse regulation of the unit, which is of great significance to the safe and stable operation of the power grid. Summary of the Invention

[0005] In view of the above existing problems, the present invention is proposed.

[0006] Therefore, the technical problem solved by the present invention is that currently, the reverse regulation of general hydro-generator units is achieved by restricting the action speed of the guide vane. Due to the inherent characteristics of the hydro-generator unit itself, after the guide vane speed is restricted for some units, the power regulation response of the unit will be too slow, which is not conducive to the safe and stable operation of the power grid. The present invention is formed by overcoming the deficiencies of the prior art.

[0007] To solve the above technical problem, the present invention provides the following technical solution: A control method for suppressing water hammer reverse regulation by superimposing a hydro-generator unit and energy storage, including: During the normal operation of the hydropower unit connected to the grid, the power output value of the hydropower unit, the power output or absorption value of the energy storage device, and the guide vane opening value of the hydropower unit are collected in real time; According to the power output value of the hydropower unit, the guide vane opening value of the hydropower unit, and the power fluctuation value, calculate the output or absorption power of the hydropower unit and the combined energy storage device; Suppress the reverse regulation phenomenon of the hydropower unit through the energy storage device, create a power characteristic curve, and adjust the power output or absorption of the energy storage device to ensure that the reverse regulation phenomenon of the hydropower unit power is effectively suppressed.

[0008] As a preferred scheme of a control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and an energy storage device according to the present invention, wherein the calculation of the output or absorption power of the hydropower unit and the combined energy storage device includes that during the normal operation of the unit connected to the grid, if the guide vane opening of the hydropower unit remains constant, it is determined that the unit has not adjusted the load, and the total combined output power value of the first hydropower unit and the energy storage device is calculated and obtained according to the first prediction model; The first prediction model is expressed as , wherein, is the total combined output power value of the first hydropower unit and the energy storage device, is the actual power value of the hydropower unit.

[0009] As a preferred scheme of a control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and an energy storage device according to the present invention, wherein when the unit makes a load adjustment, if the guide vane opening value of the hydropower unit , the energy storage device operates in the power output mode, and the total combined output power value of the second hydropower unit and the energy storage device is calculated and obtained according to the second prediction model; The second prediction model is expressed as , wherein, is the total combined output power value of the second hydropower unit and the energy storage device, is the actual output power value of the energy storage device.

[0010] As a preferred scheme of a control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and an energy storage device according to the present invention, wherein if the guide vane opening value of the hydropower unit , the energy storage device operates in the power absorption mode, and the total combined output power value of the third hydropower unit and the energy storage device is calculated and obtained according to the third prediction model; , wherein, is the total combined output power value of the third hydropower unit and the energy storage device.

[0011] As a preferred embodiment of the control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage according to the present invention, during the process of the unit adjusting the load, the output or absorption of power by the energy storage device is used to suppress the reverse regulation phenomenon formed due to the inherent characteristics of the water turbine. The output characteristics are defined, and the output characteristics include a reverse regulation peak coefficient, a reverse regulation control start time coefficient, a reverse regulation peak control value time coefficient, and a reverse regulation control end time coefficient; The reverse regulation is suppressed by creating a power characteristic curve by combining the output characteristics with the reverse regulation characteristics.

[0012] As a preferred embodiment of the control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage according to the present invention, the output characteristics are expressed as , wherein is the real-time power value actually absorbed or emitted by the energy storage device, is the reverse regulation peak coefficient, is the reverse regulation control start time coefficient, is the reverse regulation peak control value time coefficient, is the reverse regulation control end time coefficient, Tw is the water flow inertia time constant of the water turbine, and i represents the moment.

[0013] As a preferred embodiment of the control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage according to the present invention, the suppression of reverse regulation includes that when the unit starts to adjust to the reverse regulation control start time, the output absorption power of the energy storage device is 0; When the control time is within the reverse regulation control start time and the reverse regulation peak control value time, the output absorption power of the energy storage device is changing regularly with time from to point O; When the control time is within the reverse regulation peak control value time and the reverse regulation control end time, the output absorption power of the energy storage device is changing regularly with time from point O to point; When the control time is greater than the reverse regulation control end time, the output absorption power of the energy storage device is 0, and the reverse regulation suppression of the power of a disturbance process is completed.

[0014] Another object of the present invention is to provide a control system for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage, which can solve the problem of power reverse regulation caused by water flow inertia when the guide vane of the governor of the hydropower unit moves quickly. In response to this problem, a method of adding energy storage and controlling the output characteristics of its output power to suppress the reverse regulation of the overall output characteristics of the unit is proposed.

[0015] To solve the above technical problems, the present invention provides the following technical solution: A control system for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage, comprising: a data acquisition module, configured to collect in real time the power output value of the hydropower unit, the power output or absorption value of the energy storage device, and the guide vane opening value of the hydropower unit during the normal operation of the grid connection of the hydropower unit; a power calculation module, configured to calculate the total combined output power value of the hydropower unit and the energy storage device according to the power output value of the hydropower unit, the power output value of the energy storage device, and the guide vane opening value of the hydropower unit; and a reverse regulation suppression module, configured to suppress the reverse regulation phenomenon of the hydropower unit through the energy storage device, create a power characteristic curve, and adjust the power output or absorption of the energy storage device to ensure that the reverse regulation phenomenon of the hydropower unit power is effectively suppressed.

[0016] A computer device, comprising a memory and a processor, the memory storing a computer program, and the processor implementing the steps of the control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage as described above when executing the computer program.

[0017] A computer-readable storage medium, having stored thereon a computer program, the computer program implementing the steps of the control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage as described above when executed by a processor.

[0018] The beneficial effects of the present invention: The control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage provided by the present invention significantly improves the regulation quality of the unit by suppressing the reverse regulation phenomenon of the hydropower unit. Suppressing the reverse regulation phenomenon helps to ensure the normal operation of the primary frequency regulation function, thereby better maintaining the stability of the grid frequency. Frequent power reverse regulation will cause additional mechanical stress on the hydropower unit, increase equipment wear, and thus increase the maintenance cost. Through effective suppression measures, this kind of wear can be reduced, the equipment life can be extended, and the maintenance cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is the overall flowchart of a control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage provided by an embodiment of the present invention.

[0021] Figure 2 It is the schematic diagram of reverse regulation suppression of a control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage provided by an embodiment of the present invention.

[0022] Figure 3 The simulation waveform diagram of the reverse regulation of the unit power of a control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage provided by an embodiment of the present invention.

[0023] Figure 4 The simulation waveform diagram of the reverse regulation power output suppression of the energy storage device of a control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage provided by an embodiment of the present invention.

[0024] Figure 5 The simulation waveform diagram of the power output after suppression of reverse regulation by the unit combined with the energy storage device of a control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage provided by an embodiment of the present invention. Detailed implementation manners

[0025] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention with reference to the accompanying drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] Many specific details are set forth in the following description in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0027] Embodiment 1, referring to Figure 1 , which is an embodiment of the present invention, provides a control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage, including: Step S1: During the normal grid-connected operation of the hydropower unit, the power output value of the hydropower unit, the power output or absorption value of the energy storage device, and the guide vane opening value of the hydropower unit are collected in real time; Step S2: Calculate the output or absorption power of the hydropower unit and the combined energy storage device according to the power output value of the hydropower unit, the guide vane opening value of the hydropower unit, and the power fluctuation value; Step S3: Suppress the reverse regulation phenomenon of the hydropower unit through the energy storage device, create a power characteristic curve, and adjust the power output or absorption of the energy storage device to ensure that the reverse regulation phenomenon of the hydropower unit power is effectively suppressed.

[0028] Calculating the output or absorption power of the hydropower unit and the combined energy storage device includes that during the normal grid-connected operation of the unit, if the guide vane opening of the hydropower unit If it remains constant, it is determined that the unit has not adjusted the load, and the total combined output power value of the first hydropower unit and the energy storage device is calculated according to the first prediction model; The first prediction model is expressed as , where is the total combined output power value of the first hydropower unit and the energy storage device, is the actual power value of the hydropower unit.

[0029] When the unit adjusts the load, if the guide vane opening value of the hydropower unit , the energy storage device operates in the output power mode, and the total combined output power value of the second hydropower unit and the energy storage device is calculated according to the second prediction model; The second prediction model is expressed as , where is the total combined output power value of the second hydropower unit and the energy storage device, is the actual power value of the hydropower unit, is the actual output power value of the energy storage device.

[0030] If the guide vane opening value of the hydropower unit when, the energy storage device operates in the absorption power mode, and the total combined output power value of the third hydropower unit and the energy storage device is calculated according to the third prediction model; , where is the total combined output power value of the third hydropower unit and the energy storage device, is the actual power value of the hydropower unit, is the actual absorption power value of the energy storage device.

[0031] During the process of the unit adjusting the load, the output or absorption power of the energy storage device is used to suppress the reverse regulation phenomenon formed by the inherent characteristics of the water turbine. The output characteristics are defined, and the output characteristics include the reverse regulation peak coefficient, the reverse regulation control start time coefficient, the reverse regulation peak control value time coefficient, and the reverse regulation control end time coefficient. The power characteristic curve is created by combining the output characteristics with the reverse regulation characteristics to suppress the reverse regulation.

[0032] The output characteristics are expressed as , where is the real-time power value actually absorbed or emitted by the energy storage device, is the reverse regulation peak coefficient, is the reverse regulation control start time coefficient, is the reverse regulation peak control value time coefficient, is the anti-regulation control end time coefficient, Tw is the water turbine water flow inertia time constant, which is an inherent parameter of the water turbine. i represents time, and it is the i-th moment.

[0033] It should be noted that , ta, tb, and tc are four set parameters. These set values are determined according to the characteristics of the unit itself or through perturbation tests. There is no particularity in the parameters themselves, and they are mainly adjusted according to the actual situation.

[0034] Suppressing the anti-regulation includes that when the time coefficient from when the unit starts to regulate to the anti-regulation peak control value reaches the corresponding anti-regulation control start time, the output absorption power of the energy storage device is 0; When the control time is within the corresponding anti-regulation control start time of the anti-regulation peak control value time coefficient and the corresponding anti-regulation peak control value time of the anti-regulation peak control value time coefficient , the output absorption power of the energy storage device changes regularly from to point O with time; When the control time is within the corresponding anti-regulation peak control value time of the anti-regulation peak control value time coefficient and the corresponding anti-regulation control end time of the anti-regulation control end time coefficient , the output absorption power of the energy storage device changes regularly from point O to point with time; When the control time is greater than the corresponding anti-regulation control end time of the anti-regulation control end time coefficient , the output absorption power of the energy storage device is 0, and the anti-regulation suppression of the power of a perturbation process is completed.

[0035] Embodiment 2, referring to Figure 2 , which is an embodiment of the present invention, provides a control system for suppressing water hammer anti-regulation by superimposing a hydropower unit and energy storage, including: A data acquisition module, which is used to collect the power output value of the hydropower unit, the power output or absorption value of the energy storage device, and the guide vane opening value of the hydropower unit in real time during the normal operation of the hydropower unit connected to the grid; A power calculation module, which is used to calculate the combined output total power value of the hydropower unit and the energy storage device according to the power output value of the hydropower unit, the power output value of the energy storage device, and the guide vane opening value of the hydropower unit; An anti-regulation suppression module, which is used to suppress the anti-regulation phenomenon of the hydropower unit through the energy storage device, create a power characteristic curve, and adjust the power output or absorption of the energy storage device to ensure that the anti-regulation phenomenon of the hydropower unit power is effectively suppressed.

[0036] During the normal operation of the unit connected to the grid, is the actual active power value of the hydropower unit at the current moment, is the actual output or absorption power value of the energy storage device at the current moment, is the guide vane opening value of the hydro-generator unit at the current moment, is the inherent water flow inertia time constant of the hydro-generator unit, is the reverse regulation peak coefficient, is the reverse regulation start time coefficient, is the reverse regulation peak control value time coefficient, is the reverse regulation end time coefficient, is the total actual power value of the combined output of the hydro-generator unit and the energy storage device at the current moment.

[0037] During the normal grid-connected operation of the unit, when there is no load adjustment for the unit, that is, when the guide vane opening of the hydro-generator unit remains constant: , wherein, is the total combined output power value of the hydro-generator unit and the energy storage device, is the actual power value of the hydro-generator unit; When the unit is grid-connected and operating, when there is a load adjustment for the unit, when the guide vane opening value of the hydro-generator unit is, then the energy storage device operates in the output power mode, and the total combined output power value is: , wherein, is the total combined output power value of the hydro-generator unit and the energy storage device, is the actual power value of the hydro-generator unit, is the actual output power value of the energy storage device.

[0038] When the unit is grid-connected and operating, when there is a load adjustment for the unit, when the guide vane opening value of the hydro-generator unit is, then the energy storage device operates in the absorption power mode, and the total combined output power value is: , wherein, is the total combined output power value of the hydro-generator unit and the energy storage device, is the actual power value of the hydro-generator unit, is the actual absorption power value of the energy storage device.

[0039] During the process of the unit adjusting the load, the reverse regulation phenomenon formed due to the inherent characteristics of the water turbine is suppressed by the output or absorption power of the energy storage device. Among them, in the defined output characteristics, is the reverse regulation peak coefficient, is the reverse regulation start time coefficient, is the time coefficient of the anti-regulation peak control value, is the time coefficient of the end time of anti-regulation control. By combining the above parameters with the anti-regulation characteristics, a power characteristic curve is created to suppress anti-regulation.

[0040] Its output characteristics are as follows: (1) Among them, is the real-time power value actually absorbed or emitted by the energy storage device, is the anti-regulation peak coefficient, is the start time coefficient of anti-regulation control, is the time coefficient of the anti-regulation peak control value, is the end time coefficient of anti-regulation control.

[0041] By increasing the way of rapid reverse regulation of the energy storage, the anti-regulation characteristics of the hydro-generator unit are suppressed. During the process of the unit adjusting the load, the anti-regulation phenomenon is suppressed by the rapid output or absorption of power by the energy storage device. According to formula (1), when the unit starts to adjust to the start time of anti-regulation control corresponding to the start time coefficient of anti-regulation control , the output absorption power of the energy storage device is 0; when the control time is within the start time of anti-regulation control corresponding to the start time coefficient of anti-regulation control and the anti-regulation peak control value time corresponding to the time coefficient of anti-regulation peak control value , as Figure 2 shown, the output absorption power of the energy storage device is changing regularly from to point O with time; when the control time is within the anti-regulation peak control value time corresponding to the time coefficient of anti-regulation peak control value and the end time of anti-regulation control corresponding to the end time coefficient of anti-regulation control , as Figure 2 shown, the output absorption power of the energy storage device is changing regularly from O to point with time; when the control time is greater than the end time of anti-regulation control corresponding to the end time coefficient of anti-regulation control , the output absorption power of the energy storage device is 0, completing the anti-regulation suppression of the power of a disturbance process. The abscissa t represents time, and the ordinate P represents power.

[0042] Example 3, an embodiment of the present invention, which is different from the previous two embodiments in that: If the above-mentioned functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs.

[0043] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a predefined sequence list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or in conjunction with these instruction execution systems, apparatuses, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0044] More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection part with one or more wirings (electronic device), a portable computer disk cartridge (magnetic device), random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), fiber optic device, and portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpretation, or other suitable processing as necessary, and then stored in a computer memory.

[0045] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0046] Example 4, referring to Figures 3 - 5 , which is an embodiment of the present invention, provides a control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through economic benefit calculation and simulation experiments.

[0047] A simulation example verification is carried out for the reverse regulation of the unit power. The unit is operating normally at 1 (per unit value of power), and a frequency disturbance is carried out at the 5s time point, and the disturbance amount is about 10% or so. Figure 3 It is the waveform diagram of the power output characteristic of the unit body. Figure 4 It is the waveform diagram of the power output characteristic of the energy storage device for suppressing the reverse regulation on site. Figure 5 It is the waveform diagram of the power output characteristic of the entire unit combined with the energy storage device after suppressing the reverse regulation. Figure 5 It can be seen that after adding energy storage, the phenomenon of reverse regulation of the unit during the frequency modulation operation can be fully suppressed.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage, characterized in that, Including: During the normal operation of the hydropower unit connected to the grid, the power output value of the hydropower unit, the power output or absorption value of the energy storage device, and the guide vane opening value of the hydropower unit are collected in real time; According to the power output value of the hydropower unit, the guide vane opening value of the hydropower unit, and the power fluctuation value, calculate the output or absorption power of the hydropower unit and the combined energy storage device; Suppress the reverse regulation phenomenon of the hydropower unit through the energy storage device, create a power characteristic curve, and adjust the power output or absorption of the energy storage device to ensure that the reverse regulation phenomenon of the hydropower unit power is effectively suppressed; The calculation of the output or absorption power of the hydropower unit and the combined energy storage device includes that during the normal operation of the unit connected to the grid, if the guide vane opening of the hydropower unit remains constant, it is judged that the unit has not adjusted the load, and the total combined output power value of the hydropower unit and the energy storage device is calculated and obtained according to the first prediction model; When the unit undergoes load adjustment, if the guide vane opening value of the hydropower unit , the energy storage device operates in the output power mode, and the total combined output power value of the second hydropower unit and the energy storage device is calculated and obtained according to the second prediction model; When the guide vane opening value of the hydroelectric unit is , the energy storage device operates in the power absorption mode, and the total combined output power value of the third hydroelectric unit and the energy storage device is calculated according to the third prediction model.

2. The control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage according to claim 1, characterized in that: The first prediction model is expressed as ， Among them, is the total combined output power value of the first hydropower unit and the energy storage device, is the actual power value of the hydropower unit.

3. A control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage according to claim 2, characterized in that: The second prediction model is expressed as ， Among them, is the total combined output power value of the second hydropower unit and the energy storage device, is the actual output power value of the energy storage device.

4. The control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage according to claim 3, characterized in that: The third prediction model is expressed as ， Among them, is the total combined output power value of the third hydropower unit and the energy storage device.

5. A control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage, as described in claim 4, characterized in that: During the process of the unit adjusting the load, suppress the reverse regulation phenomenon formed by the inherent characteristics of the water turbine by the output or absorption power of the energy storage device, and define the output characteristics. The output characteristics include the reverse regulation peak coefficient, the reverse regulation control start time coefficient, the reverse regulation peak control value time coefficient, and the reverse regulation control end time coefficient; Suppress the reverse regulation by creating a power characteristic curve by combining the output characteristics with the reverse regulation characteristics.

6. A control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage, as described in claim 5, characterized in that: The output characteristics are expressed as ， Among them, is the real-time power value actually absorbed or emitted by the energy storage device, is the reverse regulation peak coefficient, is the reverse regulation control start time coefficient, is the reverse regulation peak control value time coefficient, is the reverse regulation control end time coefficient, Tw is the water turbine water flow inertia time constant, and i represents the moment.

7. The control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage according to claim 6, characterized in that: The reverse regulation suppression includes that when the unit starts to adjust to the reverse regulation control start time, the output absorption power of the energy storage device is 0; When the control time is within the anti-regulation start time and the anti-regulation peak control value time, the energy storage device outputs an absorption power that changes regularly with time to point O; When the control time is within the anti-peak-regulation control value time and the anti-regulation end time, the output absorption power of the energy storage device changes regularly with time from point O to point; When the control time is greater than the reverse regulation control end time, the output absorption power of the energy storage device is 0, and the reverse regulation suppression of the power of a disturbance process is completed.

8. A system adopting a control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and energy storage as described in any one of claims 1 to 7, characterized in that, Including: A data acquisition module for collecting in real time the power output value of the hydropower unit, the power output or absorption value of the energy storage device, and the guide vane opening value of the hydropower unit during the normal operation of the hydropower unit connected to the grid; A power calculation module for calculating the output or absorption power of the hydropower unit and the combined energy storage device according to the power output value of the hydropower unit, the guide vane opening value of the hydropower unit, and the power fluctuation value; A reverse regulation suppression module for suppressing the reverse regulation phenomenon of the hydropower unit through the energy storage device, creating a power characteristic curve, and adjusting the power output or absorption of the energy storage device to ensure that the reverse regulation phenomenon of the hydropower unit power is effectively suppressed.

9. A computer device, comprising a memory and a processor, the memory storing a computer program, characterized in that, When the processor executes the computer program, the steps of a control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and an energy storage as described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, the steps of a control method for suppressing water hammer reverse regulation by superimposing a hydropower unit and an energy storage as described in any one of claims 1 to 7 are implemented.

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