A method and system for balancing pressure fluctuations in a hydraulic system

Abstract

The application belongs to the technical field of hydraulic speed regulation systems, and relates to a hydraulic system pressure fluctuation balancing method, device, system and medium. The method comprises the following steps: acquiring historical AGC instruction information, historical pressure fluctuation and historical stable pressure, establishing a prediction model through neural network learning; acquiring current AGC instruction information, and predicting a predicted pressure corresponding to the pressure fluctuation position of the hydraulic system according to the current AGC instruction information by the prediction model; adjusting the outer pressure of the hose at the pressure fluctuation position of the hydraulic system according to the predicted pressure and the acquired current pressure fluctuation, and obtaining a current stable pressure for balancing the current pressure fluctuation; training the prediction model according to the current stable pressure, obtaining an optimization model, and balancing the pressure fluctuation of the hydraulic system according to the optimization model. The method can slow down the hydraulic fluctuation energy, ensure stable operation of the hydraulic system, and improve reliability.

Description

Technical Field

[0001] This application relates to the field of hydraulic speed control system technology, and in particular to a method and system for balancing pressure fluctuations in a hydraulic system. Background Technology

[0002] Hydraulic transmission is a stable energy transfer method that relies on hydraulic oil as the working medium to achieve the conversion between mechanical energy and hydraulic energy and back to mechanical energy.

[0003] However, due to the incompressibility of hydraulic oil, pressure energy cannot be stored when it is used. When the hydraulic system suddenly changes its operating conditions, the hydraulic oil in the system is prone to water hammer due to inertia. The energy of the hydraulic oil can only be weakened by the internal fluid resistance of the pipeline. Water hammer generated by the hydraulic oil can easily cause serious incidents such as noise, pipeline vibration, loosening of fasteners, and pipeline valve rupture, endangering the safe and stable operation of the system. Under the regulation of AGC in hydropower stations, the operating conditions of the hydraulic speed regulation system switch more frequently, causing frequent changes in system pressure, making the safety problems faced by the hydraulic system even more serious. Summary of the Invention

[0004] Based on this, it is necessary to provide a method, device, system, and medium for balancing pressure fluctuations in hydraulic systems to address the aforementioned technical problems. This method can mitigate the energy of hydraulic fluctuations and overcome the shortcomings of existing systems, such as the significant impact of hydraulic water hammer caused by changes in operating conditions, the inability of traditional auxiliary devices like accumulators with fixed working pressures to adequately handle pressure fluctuations caused by pressure changes, the inability to effectively address the impact of hydraulic fluctuations, and the inability to adapt to frequent pressure changes. This will reduce the significant safety hazards posed by frequent hydraulic fluctuations to the unit and improve reliability while ensuring the stable operation of the hydraulic system.

[0005] A method for balancing pressure fluctuations in a hydraulic system, comprising:

[0006] Acquire historical AGC command information, historical pressure fluctuations, and historical stable pressure, and build a predictive model through neural network learning;

[0007] The current AGC instruction information is obtained, and the prediction model predicts the pressure corresponding to the pressure fluctuation position of the hydraulic system based on the current AGC instruction information.

[0008] Based on the predicted pressure and the obtained current pressure fluctuation, adjust the external pressure of the hose at the pressure fluctuation position of the hydraulic system to obtain the current stable pressure that balances the current pressure fluctuation.

[0009] The prediction model is trained based on the current stable pressure to obtain an optimized model, and the pressure fluctuations of the hydraulic system are balanced based on the optimized model.

[0010] In one embodiment, the pressure fluctuation locations of the hydraulic system include: the guide vane oil circuit main valve, the guide vane oil circuit regulating valve, the blade oil circuit main valve, and the blade oil circuit regulating valve.

[0011] In one embodiment, adjusting the external pressure of the hose at the location of the pressure fluctuation in the hydraulic system based on the predicted pressure and the acquired current pressure fluctuation, and obtaining a current stable pressure to balance the current pressure fluctuation, includes:

[0012] Based on the predicted pressure, adjust the external pressure of the hose at the pressure fluctuation position of the hydraulic system to obtain the initial adjustment pressure;

[0013] Obtain the current pressure fluctuation, and based on the current pressure fluctuation and the previously adjusted pressure, adjust the external pressure of the hose at the pressure fluctuation position of the hydraulic system again to obtain the current stable pressure that balances the current pressure fluctuation.

[0014] In one embodiment, adjusting the external pressure of the hose at the pressure fluctuation location of the hydraulic system according to the predicted pressure to obtain the pre-adjusted pressure includes:

[0015] During the start-up process of the hydraulic system, when the guide vane oil circuit main valve and the blade oil circuit main valve are opened simultaneously, a second pressure fluctuation and a fifth fluctuation time are generated. Based on the second pressure fluctuation and the fifth fluctuation time, the external pressure of the hose at the outlet of the guide vane oil circuit main valve and the outlet of the blade oil circuit main valve is adjusted to obtain the initial adjustment pressure of the guide vane oil circuit main valve and the blade oil circuit main valve.

[0016] During the operation of the hydraulic system, when the guide vane oil circuit regulating valve is opened, a fifth pressure fluctuation and a third fluctuation time are generated. Based on the fifth pressure fluctuation and the third fluctuation time, the external pressure of the guide vane oil circuit regulating valve hose is adjusted to obtain the initial adjustment pressure of the guide vane oil circuit regulating valve. When the impeller oil circuit regulating valve is opened, a sixth pressure fluctuation and a fourth fluctuation time are generated. Based on the sixth pressure fluctuation and the fourth fluctuation time, the external pressure of the impeller oil circuit regulating valve hose is adjusted to obtain the initial adjustment pressure of the impeller oil circuit regulating valve. When the impeller oil circuit regulating valve is closed, a fourth pressure fluctuation and a second fluctuation time are generated. Based on the fourth pressure fluctuation and the second fluctuation time, the external pressure of the impeller oil circuit regulating valve hose is adjusted to obtain the initial adjustment pressure of the impeller oil circuit regulating valve. When the guide vane oil circuit regulating valve is closed, a third pressure fluctuation and a first fluctuation time are generated. Based on the third pressure fluctuation and the first fluctuation time, the external pressure of the guide vane oil circuit regulating valve hose is adjusted to obtain the initial adjustment pressure of the guide vane oil circuit regulating valve.

[0017] During the shutdown process of the hydraulic system, when the guide vane oil circuit main valve and the blade oil circuit main valve are closed at the same time, the first pressure fluctuation is generated. Based on the first pressure fluctuation, the external pressure of the hoses of the guide vane oil circuit main valve and the blade oil circuit main valve are adjusted respectively to obtain the initial adjustment pressure of the guide vane oil circuit main valve and the blade oil circuit main valve respectively.

[0018] The first pressure fluctuation, the second pressure fluctuation, the third pressure fluctuation, the fourth pressure fluctuation, the fifth pressure fluctuation, and the sixth pressure fluctuation decrease sequentially, and the first fluctuation time, the second fluctuation time, the third fluctuation time, the fourth fluctuation time, and the fifth fluctuation time decrease sequentially.

[0019] In one embodiment, obtaining current AGC instruction information and using the prediction model to predict the pressure corresponding to the pressure fluctuation position of the hydraulic system based on the current AGC instruction information includes:

[0020] Obtain the current AGC instruction information, and estimate the pressure fluctuation location of the hydraulic system and the corresponding pressure fluctuation at each pressure fluctuation location based on the current AGC instruction information;

[0021] Based on the prediction model, the fluctuation range of the corresponding pressure fluctuation is predicted according to the current AGC instruction information and the corresponding pressure fluctuation at each pressure fluctuation position. Based on the fluctuation range, the predicted pressure corresponding to the pressure fluctuation position of the hydraulic system is obtained.

[0022] In one embodiment, historical AGC instruction information, historical pressure fluctuations, and historical stable pressure are obtained, and a predictive model is built through neural network learning, including:

[0023] Historical AGC command information, historical pressure fluctuations, and historical stable pressures are obtained. The historical AGC command information, historical pressure fluctuations, and historical stable pressures are sorted and corresponding relationships are established through a neural network to obtain a prediction model.

[0024] In one embodiment, the predictive model is trained based on the current stable pressure to obtain an optimized model, and the pressure fluctuations of the hydraulic system are balanced based on the optimized model, including:

[0025] The prediction model is trained based on the current stable pressure, current pressure fluctuation, and current AGC command information to obtain an optimized model;

[0026] The next AGC instruction information is obtained, and the optimization model predicts the next predicted pressure corresponding to the pressure fluctuation position of the hydraulic system based on the next AGC instruction information.

[0027] Based on the next predicted pressure and the obtained next pressure fluctuation, adjust the external pressure of the hose at the pressure fluctuation position of the hydraulic system to obtain the next stable pressure that balances the next pressure fluctuation.

[0028] A device for balancing pressure fluctuations in a hydraulic system, comprising:

[0029] The acquisition module is used to acquire historical AGC instruction information, historical pressure fluctuations, and historical stable pressure, and to build a prediction model through neural network learning.

[0030] The prediction module is used to acquire the current AGC instruction information, and the prediction model uses the current AGC instruction information to predict the predicted pressure corresponding to the pressure fluctuation position of the hydraulic system.

[0031] The adjustment module is used to adjust the external pressure of the hose at the pressure fluctuation position of the hydraulic system according to the predicted pressure and the acquired current pressure fluctuation, and to obtain the current stable pressure that balances the current pressure fluctuation.

[0032] The optimization module is used to train the prediction model based on the current stable pressure to obtain an optimized model, and to balance the pressure fluctuations of the hydraulic system based on the optimized model.

[0033] A hydraulic system pressure fluctuation balancing system includes: an oil source device, a blade servo reversing device, a guide vane servo reversing device, a blade servo device, a guide vane servo device, a blade circuit energy dissipation device, a guide vane circuit energy dissipation device, a storage device, and a processing device; wherein:

[0034] The oil source device is connected to the blade relay reversing device and the guide vane relay reversing device respectively, so as to provide hydraulic energy to the working medium in the blade circuit and the guide vane circuit respectively.

[0035] The blade relay reversing device is connected to the oil source device, the blade relay device and the blade circuit energy dissipation device respectively, and the guide vane relay reversing device is connected to the oil source device, the guide vane relay device and the guide vane circuit energy dissipation device respectively, so as to change the flow direction of hydraulic oil and control the hydraulic system to achieve different working conditions.

[0036] The blade relay device is connected to the blade relay reversing device and the blade circuit energy dissipation device to convert the hydraulic energy of the hydraulic oil in the hydraulic system into the mechanical energy of the blade relay, thereby realizing the control and adjustment of the blade opening.

[0037] The guide vane relay device is connected to the guide vane relay reversing device and the guide vane circuit energy dissipation device to convert the hydraulic energy of the hydraulic oil in the hydraulic system into the mechanical energy of the guide vane relay, thereby realizing the control and adjustment of the guide vane opening.

[0038] The blade circuit energy dissipation device is connected to the blade relay reversing device and the blade relay device respectively, and the guide vane circuit energy dissipation device is connected to the guide vane relay reversing device and the guide vane relay device respectively, so as to reduce pressure fluctuations under different stable pressures.

[0039] The storage device stores computer programs, prediction models, and optimization models;

[0040] The processing device is connected to the blade relay reversing device, the guide vane relay reversing device, the blade circuit energy dissipation device, the guide vane circuit energy dissipation device, and the storage device. When the processing device executes the computer program, it realizes a method for balancing pressure fluctuations in a hydraulic system.

[0041] A computer-readable storage medium having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0042] Acquire historical AGC command information, historical pressure fluctuations, and historical stable pressure, and build a predictive model through neural network learning;

[0043] The current AGC instruction information is obtained, and the prediction model predicts the pressure corresponding to the pressure fluctuation position of the hydraulic system based on the current AGC instruction information.

[0044] Based on the predicted pressure and the obtained current pressure fluctuation, adjust the external pressure of the hose at the pressure fluctuation position of the hydraulic system to obtain the current stable pressure that balances the current pressure fluctuation.

[0045] The prediction model is trained based on the current stable pressure to obtain an optimized model, and the pressure fluctuations of the hydraulic system are balanced based on the optimized model.

[0046] The aforementioned method for balancing pressure fluctuations in a hydraulic system first establishes a predictive model based on historical information. Then, upon receiving new commands, it predicts the location and corresponding pressure fluctuations. Based on the predictive model, it forecasts the potential pressure at each fluctuation location. Next, it pre-adjusts the pressure at the fluctuation location based on the predicted pressure. Finally, after obtaining the actual system pressure fluctuation (the current fluctuation), it adjusts the pressure at the fluctuation location again to balance the pressure fluctuations. This method addresses the problem of frequent pressure fluctuations in the hydraulic oil within a hydropower station's hydraulic system, caused by frequent adjustments to the turbine's operating conditions via the hydraulic speed control system after receiving AGC commands. It replaces the pipes at the pressure fluctuation locations with flexible hoses. When the hydraulic system changes its operating conditions, the pressure fluctuations generated by the hydraulic oil can be effectively transmitted to the energy dissipation hoses. The working pressure of the energy dissipation hoses is adjusted to match the external pressure with the stable internal hydraulic oil pressure. This adjustable pressure energy dissipation hose reduces the damage caused by frequent pressure fluctuations to the hydraulic system, eliminating hydraulic fluctuations without energy loss due to hose deformation. Attached Figure Description

[0047] Figure 1 This is a flowchart illustrating a method for balancing pressure fluctuations in a hydraulic system in one embodiment.

[0048] Figure 2 This is a schematic diagram illustrating the establishment of a prediction model in one embodiment;

[0049] Figure 3 This is a flowchart illustrating a method for balancing pressure fluctuations in a hydraulic system, as described in another embodiment.

[0050] Figure 4 This is a structural block diagram of a hydraulic system pressure fluctuation balancing device in one embodiment;

[0051] Figure 5 This is a structural diagram of a hydraulic system pressure fluctuation balancing system in one embodiment;

[0052] Figure 6 This is a cross-sectional schematic diagram of an energy dissipation device in a hydraulic system pressure fluctuation balancing system, as shown in one embodiment.

[0053] Figure label:

[0054] 1. Oil tank; 2. Filter; 3. Hydraulic oil pump motor; 4. Hydraulic oil pump; 5. Combination valve; 6. Working oil tank;

[0055] 11(111) Three-position four-way directional control valve; 12(112) Three-position four-way directional control valve control signal receiver;

[0056] 10(110) Post-pipe sensor; 13(113) Pre-pipe sensor; 14(114) Outer pressure-resistant hard shell of hose; 15(115) Energy dissipation hose; 16(116) Pressure sensor; 17(117) Shut-off valve; 18(118) Shut-off valve control signal receiver; 19(119) Gas pump; 20(120) Gas pump motor; 21(121) Gas cylinder;

[0057] 7-segment shut-off device; 22(122) relay; 23(123) relay control signal receiver;

[0058] A. Flexible hose support structure; B. Support ring; C. Pressure-resistant outer shell of the flexible hose; D. Energy dissipation flexible hose.

[0059] X1 Oil source device, X2 Blade servo reversing device, X3 Guide vane servo reversing device, X4 Blade servo device, X5 Guide vane servo device, X6 Blade circuit energy dissipation device, X7 Guide vane circuit energy dissipation device. Detailed Implementation

[0060] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0061] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0062] Furthermore, the use of terms such as "first," "second," etc., in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this application, "multiple sets" means at least two sets, such as two sets, three sets, etc., unless otherwise explicitly specified.

[0063] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0064] Furthermore, the technical solutions of the various embodiments of this application can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this application.

[0065] This application provides a method for balancing pressure fluctuations in a hydraulic system, such as... Figure 1 As shown, in one embodiment, it includes:

[0066] Step 102: Obtain historical AGC instruction information, historical pressure fluctuations, and historical stable pressure, and establish a prediction model through neural network learning.

[0067] Specifically:

[0068] Historical AGC command information, historical pressure fluctuations, and historical stable pressure are obtained. The historical AGC command information, historical pressure fluctuations, and historical stable pressure are sorted and corresponding relationships are established through a neural network to obtain a prediction model.

[0069] In this step, historical AGC instruction information refers to the received historical AGC adjustment signals, historical pressure fluctuation refers to the pressure fluctuation value generated by the hydraulic system under historical AGC instruction information, and historical stable pressure refers to the pressure required to stabilize historical pressure fluctuations.

[0070] Neural networks learn from historical information, establish correspondences between various pieces of information, and sort them by size to build a predictive model.

[0071] In one embodiment, such as Figure 2 As shown, historical AGC signals received by the hydropower station, hydraulic system pressure fluctuations corresponding to AGC signals, and stable pressure signals are used as training samples. The training samples are sorted according to the AGC signal opening degree, and abnormal pressure signal data groups are removed. The remaining training samples are input into a computer for artificial neural network learning. Training is performed round by round according to the sample order, adjusting the weights. Samples are sequentially extracted, substituted into the BP algorithm, and the weights are adjusted. Due to the large number of samples, batch training is used during computer training, which is faster than single-sample training. After all samples are input, the total error of the network is calculated, and the weights are adjusted based on the total error. After repeated optimization training, an optimized model is obtained. The received AGC commands are input into the optimized model to obtain the hydraulic system stable pressure predicted by machine learning. The predicted pressure is transmitted to the air pump at the energy dissipation pipeline, and the system is pressurized or depressurized according to the predicted pressure. The pressure measuring device at the outlet of the reversing valve determines whether the predicted pressure needs fine-tuning. If fine-tuning is needed, the AGC signal and the measured stable pressure are transmitted to the computer, and this set of signals is stored and learned as samples.

[0072] Step 104: Obtain the current AGC instruction information, and the prediction model predicts the pressure corresponding to the pressure fluctuation position of the hydraulic system based on the current AGC instruction information.

[0073] Specifically:

[0074] Obtain the current AGC instruction information, and estimate the pressure fluctuation location of the hydraulic system and the corresponding pressure fluctuation at each pressure fluctuation location based on the current AGC instruction information;

[0075] Based on the prediction model, the fluctuation range of the corresponding pressure fluctuation is predicted according to the current AGC instruction information and the corresponding pressure fluctuation at each pressure fluctuation position. Based on the fluctuation range, the predicted pressure corresponding to the pressure fluctuation position of the hydraulic system is obtained.

[0076] In this step, after receiving a new instruction, the location of the pressure fluctuation and the corresponding pressure fluctuation of the hydraulic system are estimated based on the new AGC instruction information. The corresponding pressure fluctuation refers to the fluctuation situation at the pressure fluctuation location, including the fluctuation magnitude and fluctuation time. Then, the current AGC instruction information is compared with the historical AGC instruction information, and the corresponding pressure fluctuation is compared with the historical pressure fluctuation. The possible fluctuation range of each pressure fluctuation location is predicted according to the prediction model, and the average value is taken as the predicted pressure value predicted by the prediction model.

[0077] Pressure fluctuations in the hydraulic system can be detected at the following locations: the main valve of the guide vane circuit, the regulating valve of the guide vane circuit, the main valve of the blade circuit, and the regulating valve of the blade circuit.

[0078] Step 106: Based on the predicted pressure and the obtained current pressure fluctuation, adjust the external pressure of the hose at the pressure fluctuation position of the hydraulic system to obtain the current stable pressure that balances the current pressure fluctuation.

[0079] Specifically:

[0080] Based on the predicted pressure, adjust the external pressure of the hose at the location of pressure fluctuation in the hydraulic system to obtain the initial adjustment pressure;

[0081] Obtain the current pressure fluctuation, and based on the current pressure fluctuation and the initial pressure adjustment, adjust the external pressure of the hose at the pressure fluctuation position of the hydraulic system to obtain the current stable pressure that balances the current pressure fluctuation.

[0082] More specifically:

[0083] During the start-up process of the hydraulic system, when the guide vane oil circuit main valve and the blade oil circuit main valve are opened simultaneously, a second pressure fluctuation and a fifth fluctuation time are generated. Based on the second pressure fluctuation and the fifth fluctuation time, the external pressure of the hose at the outlet of the guide vane oil circuit main valve and the outlet of the blade oil circuit main valve is adjusted to obtain the initial adjustment pressure of the guide vane oil circuit main valve and the blade oil circuit main valve.

[0084] During the operation of the hydraulic system, when the guide vane oil circuit regulating valve is opened, a fifth pressure fluctuation and a third fluctuation time are generated. Based on the fifth pressure fluctuation and the third fluctuation time, the external pressure of the guide vane oil circuit regulating valve hose is adjusted to obtain the initial adjustment pressure of the guide vane oil circuit regulating valve. When the impeller oil circuit regulating valve is opened, a sixth pressure fluctuation and a fourth fluctuation time are generated. Based on the sixth pressure fluctuation and the fourth fluctuation time, the external pressure of the impeller oil circuit regulating valve hose is adjusted to obtain the initial adjustment pressure of the impeller oil circuit regulating valve. When the impeller oil circuit regulating valve is closed, a fourth pressure fluctuation and a second fluctuation time are generated. Based on the fourth pressure fluctuation and the second fluctuation time, the external pressure of the impeller oil circuit regulating valve hose is adjusted to obtain the initial adjustment pressure of the impeller oil circuit regulating valve. When the guide vane oil circuit regulating valve is closed, a third pressure fluctuation and a first fluctuation time are generated. Based on the third pressure fluctuation and the first fluctuation time, the external pressure of the guide vane oil circuit regulating valve hose is adjusted to obtain the initial adjustment pressure of the guide vane oil circuit regulating valve.

[0085] During the shutdown process of the hydraulic system, when the guide vane oil circuit main valve and the blade oil circuit main valve are closed at the same time, the first pressure fluctuation is generated. Based on the first pressure fluctuation, the external pressure of the hoses of the guide vane oil circuit main valve and the blade oil circuit main valve is adjusted to obtain the initial adjustment pressure of the guide vane oil circuit main valve and the blade oil circuit main valve.

[0086] The pressure fluctuations of the first, second, third, fourth, fifth, and sixth pressure fluctuations decrease sequentially, as do the durations of the first, second, third, fourth, and fifth fluctuations.

[0087] In this step, firstly, based on the predicted pressure from the prediction model, the external pressure of the hose at each pressure fluctuation location is pre-adjusted (the pipe at the pressure fluctuation location is replaced by a hose, and the external pressure of the hose is the pressure outside the hose) to obtain the pre-adjusted pressure. The pre-adjusted pressure refers to the pre-adjusted external pressure of the hose. Then, the current pressure fluctuation, i.e., the actual pressure value, is obtained. Based on the actual pressure value and the pre-adjusted pressure, the external pressure of the hose at each pressure fluctuation location is adjusted again (the deviation between the current pressure fluctuation and the pre-adjusted pressure is judged based on the current pressure fluctuation. If the deviation is large, the external pressure of the hose at the pressure fluctuation location of the hydraulic system is adjusted again. If there is no deviation or the deviation is small, the external pressure of the hose can be left unadjusted or finely adjusted) until the pressure inside and outside the hose is balanced, and the current stable pressure is obtained. The current stable pressure refers to the pressure value after the current pressure fluctuation is balanced.

[0088] Current pressure fluctuations can be monitored using a pressure gauge.

[0089] Analyzing the pressure fluctuations at various points in the hydraulic system, during unit startup and shutdown, the pressure fluctuations near the main inlet valves (guide vane oil circuit main valve and impeller oil circuit main valve) are relatively large, and the pressure fluctuations decrease with distance from the valve. Relatively speaking, during unit coordinated regulation, the pressure fluctuations are not as large as during startup and shutdown due to the relatively small flow rate, but due to the special nature of the regulation, the pressure fluctuations in the hydraulic system during unit operation last for a longer period. During hydraulic system operation, with the same valve opening and closing time, the pressure fluctuations during valve closing are larger and last longer than those during valve opening due to the more rapid change in flow rate. When the unit starts to shut down, the impeller servo and guide vane servo stop operating simultaneously, and the main oil circuit valves close simultaneously. The superposition of these two factors results in the maximum pressure fluctuations throughout the entire process occurring in most parts of the system. Compared with the guide vane oil circuit, the impeller oil circuit experiences less water hammer. Therefore, setting the pressure fluctuations to decrease sequentially from first to sixth, along with the duration of the first, second, third, fourth, and fifth fluctuations, can better balance the pressure fluctuations.

[0090] Step 108: Train the prediction model based on the current stable pressure to obtain an optimized model, and balance the pressure fluctuations of the hydraulic system based on the optimized model.

[0091] Specifically:

[0092] The prediction model is trained based on the current stable pressure, current pressure fluctuation, and current AGC command information to obtain an optimized model;

[0093] The next AGC instruction information is obtained, and the optimization model predicts the next predicted pressure corresponding to the pressure fluctuation position of the hydraulic system based on the next AGC instruction information.

[0094] Based on the next predicted pressure and the obtained next pressure fluctuation, adjust the external pressure of the hose at the pressure fluctuation position of the hydraulic system to obtain the next stable pressure that balances the next pressure fluctuation.

[0095] In this step, when predicting the next predicted pressure, if the duration of the previous AGC command information is sufficient for the previous pressure fluctuation to disappear, then the pressure after stabilization under the previous AGC command information is used as the next predicted pressure; if the fluctuation under the previous AGC command information has not yet subsided when the next AGC command information is received, then the average value of the fluctuation range of the predicted next pressure fluctuation is used as the next predicted pressure.

[0096] Each new AGC instruction message corresponds to a stable pressure that is sent to the current prediction or optimization model to improve the model's learning process, obtain a new model, and use the new model to make predictions for the next AGC instruction message received, in a loop.

[0097] Regardless of whether the predicted pressure differs from the actual current pressure fluctuations, the relevant information is sent to the model used in this instance for further storage and learning. This allows the model to respond to various different instructions, improve the accuracy of its predictions, and achieve a double-insurance effect.

[0098] Preferably, relevant information is sent to the model used in this instance only when there is a discrepancy between the predicted pressure and the actual current pressure fluctuation, so as to further store and learn the information. This can improve the accuracy of the model's prediction, save computation time, and improve efficiency.

[0099] In this embodiment, the hydraulic system can be a hydroelectric power station, etc.

[0100] Frequent adjustments to the power generation operating conditions cause the internal hydraulic oil pressure to change continuously, resulting in pressure fluctuations with varying stable pressures.

[0101] In one embodiment, the method flowchart is as follows: Figure 3 As shown, historical AGC commands and the system oil pressure pulsations and stable pressures under corresponding commands are input into the computer, which then processes them. Upon receiving an actual AGC command, the computer infers the possible pressure fluctuations in the system and the equilibrium pressure under that operating condition based on the AGC command. Based on the predicted equilibrium pressure, the energy dissipation pipeline is pressurized to bring its working pressure to the predicted pressure. The predicted pressure is then compared to the pipeline pressure measured by the pressure testing device under the actual AGC command. If the measured pressure matches the predicted pressure, no additional processing of the energy dissipation pipeline is required; if there is a discrepancy, the working pressure of the energy dissipation pipeline is fine-tuned based on the measured pressure, and the AGC command, measured pressure, and stable pressure information are transmitted to the computer for machine learning. Computer machine learning includes organizing and sorting the stable pressure and pressure fluctuation ranges of the pipeline under historical AGC commands and corresponding commands.

[0102] The above-mentioned method for balancing pressure fluctuations in a hydraulic system first establishes a predictive model based on historical information. Then, after receiving new instructions, it predicts the location and corresponding pressure fluctuations. Based on the predictive model, it predicts the possible pressure generated at the location of the pressure fluctuation. Then, it adjusts the pressure at the location of the pressure fluctuation in advance based on the predicted pressure. Finally, after obtaining the actual pressure fluctuation of the system, which is the current pressure fluctuation, it adjusts the pressure at the location of the pressure fluctuation again, thereby balancing the pressure fluctuations.

[0103] This method addresses the problem of frequent pressure fluctuations in hydraulic systems caused by frequent changes in operating conditions under the command of hydropower stations. It replaces the pipes at the pressure fluctuation locations with flexible hoses. When the hydraulic system changes its operating conditions, the pressure fluctuations generated by the hydraulic oil can be effectively transmitted to the energy dissipation hoses. The working pressure of the energy dissipation hoses is adjusted to match the external pressure of the hoses with the stable pressure of the internal hydraulic oil. Relying on the externally pressure-adjustable energy dissipation hoses, the damage caused by frequent pressure fluctuations to the hydraulic system is reduced. While eliminating hydraulic fluctuations, energy loss is not caused by hose deformation.

[0104] It should be understood that, although Figure 1 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order in which these steps are executed, and they can be performed in other orders. Figure 2 At least some of the steps in the process may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

[0105] This application also provides a device for balancing pressure fluctuations in a hydraulic system, such as... Figure 4 As shown, in one embodiment, it includes: an acquisition module 402, a prediction module 404, an adjustment module 406, and an optimization module 408, wherein:

[0106] The acquisition module 402 is used to acquire historical AGC instruction information, historical pressure fluctuations, and historical stable pressure, and to build a prediction model through neural network learning.

[0107] The prediction module 404 is used to acquire the current AGC instruction information and, based on the current AGC instruction information, the prediction model predicts the pressure corresponding to the pressure fluctuation position of the hydraulic system.

[0108] The adjustment module 406 is used to adjust the external pressure of the hose at the pressure fluctuation position of the hydraulic system according to the predicted pressure and the acquired current pressure fluctuation, and to obtain the current stable pressure that balances the current pressure fluctuation.

[0109] The optimization module 408 is used to train the prediction model based on the current stable pressure to obtain an optimized model, and to balance the pressure fluctuations of the hydraulic system based on the optimized model.

[0110] For specific limitations regarding a pressure balancing device for a hydraulic system, please refer to the limitations of a pressure balancing method for a hydraulic system described above, which will not be repeated here. Each module in the aforementioned device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device in hardware form, or stored in the memory of a computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0111] This application also provides a system for balancing pressure fluctuations in a hydraulic system, such as... Figure 5 As shown, it includes: an oil source device X1, a blade servo reversing device X2, a guide vane servo reversing device X3, a blade servo device X4, a guide vane servo device X5, a blade circuit energy dissipation device X6, a guide vane circuit energy dissipation device X7, a storage device, and a processing device; wherein:

[0112] The oil source device X1 is connected to the blade relay reversing device and the guide vane relay reversing device respectively, so as to provide hydraulic energy to the working medium in the blade circuit and the guide vane circuit respectively.

[0113] The blade servo reversing device X2 is connected to the oil source device, the blade servo device, and the blade circuit energy dissipation device, respectively. The guide vane servo reversing device X3 is connected to the oil source device, the guide vane servo device, and the guide vane circuit energy dissipation device, respectively. The blade servo reversing device and the guide vane servo reversing device together change the flow direction of the hydraulic oil and control the hydraulic system to achieve different working conditions.

[0114] The blade relay device X4 is connected to the blade relay reversing device and the blade circuit energy dissipation device to convert the hydraulic energy of the hydraulic oil in the hydraulic system into the mechanical energy of the blade relay, thereby realizing the control and adjustment of the blade opening.

[0115] The guide vane relay device X5 is connected to the guide vane relay reversing device and the guide vane circuit energy dissipation device to convert the hydraulic energy of the hydraulic oil in the hydraulic system into the mechanical energy of the guide vane relay, thereby realizing the control and adjustment of the guide vane opening.

[0116] The blade circuit energy dissipation device X6 is connected to the blade relay reversing device and the blade relay device respectively, in order to reduce pressure fluctuations in the blade circuit under different stable pressures.

[0117] The guide vane circuit energy dissipation device X7 is connected to the guide vane relay reversing device and the guide vane relay device respectively, in order to reduce pressure fluctuations in the guide vane circuit under different stable pressures.

[0118] The storage device stores computer programs, prediction models, and optimization models;

[0119] The processing device is connected to the blade relay reversing device, the guide vane relay reversing device, the blade circuit energy dissipation device, the guide vane circuit energy dissipation device, and the storage device. When the processing device executes the computer program, it realizes a method for balancing pressure fluctuations in a hydraulic system.

[0120] In one specific embodiment, the oil source device X1 includes: an oil tank 1, a filter 2, a hydraulic oil pump motor 3, a hydraulic oil pump 4, a combination valve 5, and a working oil tank 6; wherein, the oil tank 1, the filter 2, the hydraulic oil pump 4, the combination valve 5, and the working oil tank 6 are connected in sequence, and the hydraulic oil pump motor 3 is connected to the hydraulic oil pump 4.

[0121] The blade relay reversing device X2 includes: a three-position four-way reversing valve 111 in the blade circuit and a three-position four-way reversing valve control signal receiver 112 in the blade circuit; wherein, the three-position four-way reversing valve 111 in the blade circuit is connected to the working oil tank 6, the blade relay device X4 and the blade circuit energy dissipation device X6 respectively, and the three-position four-way reversing valve control signal receiver 112 in the blade circuit is connected to the three-position four-way reversing valve 111 in the blade circuit.

[0122] The guide vane relay reversing device X3 includes: a three-position four-way reversing valve 11 of the guide vane circuit and a three-position four-way reversing valve control signal receiver 12 of the guide vane circuit; wherein, the three-position four-way reversing valve 11 of the guide vane circuit is connected to the working oil tank 6, the guide vane relay device X5 and the guide vane circuit energy dissipation device X7 respectively, and the three-position four-way reversing valve control signal receiver 12 of the guide vane circuit is connected to the three-position four-way reversing valve 11 of the guide vane circuit.

[0123] The blade relay device X4 includes a blade relay 122 and a blade relay control signal receiver 123; wherein, the blade relay 122 is connected to the blade relay reversing device X2 and the blade circuit energy dissipation device X6 respectively, and the blade relay control signal receiver 123 is connected to the blade relay 122.

[0124] The guide vane relay device X5 includes: a guide vane relay 22, a guide vane relay control signal receiver 23, and a segmented closing device 7; wherein, one end of the guide vane relay 22 is connected to the guide vane relay reversing device X3 through the segmented closing device 7, and the other end is connected to the guide vane circuit energy dissipation device X7, and the guide vane relay control signal receiver 23 is connected to the guide vane relay 22.

[0125] The blade circuit energy dissipation device X6 includes: a post-pipe sensor 110 for the blade circuit, a pre-pipe sensor 113 for the blade circuit, a pressure-resistant outer shell 114 for the flexible hose of the blade circuit, an energy dissipation hose 115 for the blade circuit, a pressure sensor 116 for the blade circuit, a shut-off valve 117 for the blade circuit, a shut-off valve control signal receiver 118 for the blade circuit, a gas pump 119 for the blade circuit, a gas pump motor 120 for the blade circuit, and a gas cylinder 121 for the blade circuit. The energy dissipation hose 115 of the blade circuit is located inside the pressure-resistant hard shell 114 of the blade circuit hose. Both ends of the energy dissipation hose 115 of the blade circuit pass through the pressure-resistant hard shell 114 of the blade circuit hose and are connected to the blade relay device X4 and the blade relay reversing device X2 respectively. The outlets at both ends are respectively equipped with the blade circuit post-pipe sensor 110 and the blade circuit pre-pipe sensor 113. The pressure-resistant hard shell 114 of the hose is also equipped with the blade circuit pressure sensor 116. The pressure-resistant hard shell 114 of the hose is connected to the blade circuit gas pump 119 through the blade circuit shut-off valve 117. The blade circuit shut-off valve 117 is connected to the blade circuit shut-off valve control signal receiver 118. The blade circuit gas pump 119 is also connected to the blade circuit gas pump motor 120 and the blade circuit gas cylinder 121.

[0126] The guide vane circuit energy dissipation device X7 includes: a post-pipe sensor 10 of the guide vane circuit, a pre-pipe sensor 13 of the guide vane circuit, a pressure-resistant outer shell 14 of the guide vane circuit hose, an energy dissipation hose 15 of the guide vane circuit, a pressure sensor 16 of the guide vane circuit, a shut-off valve 17 of the guide vane circuit, a shut-off valve control signal receiver 18 of the guide vane circuit, a gas pump 19 of the guide vane circuit, a gas pump motor 20 of the guide vane circuit, and a gas cylinder 21 of the guide vane circuit. The energy dissipation hose 15 of the guide vane circuit is located inside the pressure-resistant hard shell 14 of the guide vane circuit hose. Both ends of the energy dissipation hose 15 of the guide vane circuit pass through the pressure-resistant hard shell 14 of the guide vane circuit hose and are connected to the guide vane relay device X5 and the guide vane relay reversing device X3 respectively. The outlets at both ends are respectively equipped with the guide vane circuit downstream sensor 10 and the guide vane circuit upstream sensor 13. The pressure sensor 16 of the guide vane circuit is also provided on the pressure-resistant hard shell 14 of the guide vane circuit hose. The pressure-resistant hard shell 14 of the guide vane circuit hose is connected to the gas pump 19 of the guide vane circuit through the guide vane circuit shut-off valve 17. The guide vane circuit shut-off valve 17 is connected to the guide vane circuit shut-off valve control signal receiver 18. The gas pump 19 of the guide vane circuit is also connected to the guide vane circuit gas pump motor 20 and the guide vane circuit gas cylinder 21.

[0127] It should also be noted that the main valve of the blade oil circuit is located between the blade servo reversing device X2 and the blade servo device X4; the blade oil circuit regulating valve is located between the oil source device X1 and the blade servo reversing device X2; the guide vane oil circuit main valve is located between the guide vane servo reversing device X3 and the guide vane servo device X5; and the guide vane oil circuit regulating valve is located between the oil source device X1 and the guide vane servo reversing device X3. The main valves of the blade and guide vane oil circuits serve the functions of reversing and hydraulic amplification, while the regulating valves of the blade and guide vane oil circuits are used to regulate the flow rate of their respective pipelines. Preferably, the blade servo reversing device and the main valve of the blade oil circuit are the same component, and the blade servo reversing device and the main valve of the guide vane oil circuit are the same component; that is, the blade servo reversing device uses the main valve of the blade oil circuit, and the guide vane servo reversing device uses the main valve of the guide vane oil circuit.

[0128] like Figure 6 As shown, a hose support structure A and a support ring B are provided between the outer pressure-resistant hard shell C (i.e., 14 or 114) and the energy-dissipating hose D (15 or 115). To ensure that the energy-dissipating hose is positioned in the middle of the pipeline, a corresponding number of hose support structures are set according to the length of the energy-dissipating hose. Among them, B is a support ring, the diameter of which is slightly larger than the diameter of the energy-dissipating hose D to prevent it from excessively affecting the elastic deformation of the energy-dissipating hose; the hose support structure A is a fixing device for the support ring B, which is connected to the outer pressure-resistant hard shell C of the hose by welding.

[0129] The working process of this embodiment is as follows:

[0130] (1) The propeller oil circuit and the guide vane oil circuit share a common oil source device; the hydraulic oil pump motor 3 drives the hydraulic oil pump 4, and pumps the clean hydraulic oil in the oil tank 1 through the filter 2 and the combination valve 5 into the working oil tank 6. The three-position four-way reversing valve control signal receiver 12 (112) receives the three-position four-way reversing valve control signal sent by the processing device, controls the three-position four-way reversing valve 11 (111) to switch, and realizes the relay 22 (122) to reach the specified working condition through the relay control signal receiver 23 (123). The segmented closing device 7 controls the guide vane relay 22 to avoid loss of control due to the impact force of the water flow on the guide vane blades when closing, and avoids damage to the guide vane relay. The propeller relay does not need a segmented closing device.

[0131] (2) Upon receiving the AGC command, the three-position four-way directional valve 11 (111) quickly changes its operating condition as required. Due to inertia and its incompressibility, the hydraulic oil inside the system pipeline generates water hammer. Since the pipelines inside the system are all made of rigid materials, they cannot effectively mitigate the water hammer caused by the hydraulic oil. They can only transfer the water hammer energy through pipeline vibration, which can easily cause pipeline valve rupture, pipeline support structure loosening, and noise, endangering the safe and stable operation of the system.

[0132] (3) The shut-off valve 17 (117) receives the signal sent by the shut-off valve control signal receiver 18 (118) and controls the gas pump motor 20 (120) in the gas pressure control circuit to drive the gas pump 19 (119) to pump the gas (such as nitrogen) in the gas cylinder 21 (121) into the space between the energy dissipation hose 15 (115) and the outer pressure-resistant hard shell 14 (114) of the hose. The shut-off valve 17 (117) controls the opening and closing according to the command to realize the control of the internal pressure of the outer pressure-resistant hard shell 14 (114) of the hose, that is, to realize the control of the working pressure of the energy dissipation hose. By applying pressure to the energy dissipation hose, the pressure inside and outside the energy dissipation hose is equal, ensuring the safe operation of the hose and reducing energy consumption, absorbing the energy of hydraulic water hammer. When the internal hydraulic oil generates pressure fluctuations, the energy dissipation hose absorbs the oil pressure fluctuations of the hydraulic oil, i.e., pressure energy, by relying on its own deformation, so as to weaken the pressure fluctuations under different stable pressures.

[0133] (4) Pressure sensor 16 (116) is used to monitor the external working pressure of the energy dissipation hose to realize the primary pressure regulation control of the energy dissipation device, that is, to obtain the initial pressure. The inlet and outlet pressure monitoring devices of the energy dissipation device, namely the inlet and outlet pressure monitoring devices, namely the inlet and outlet pressure monitoring devices 13 (113) and the outlet pressure monitoring devices 10 (110), are used to monitor the pressure fluctuation of the inlet and outlet, that is, to obtain the actual pressure value for secondary pressure regulation control.

[0134] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described above.

[0135] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0136] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0137] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method of balancing pressure fluctuations in a hydraulic system, characterized by, The method comprises the following steps: obtaining historical AGC instruction information, historical pressure fluctuation and historical stable pressure, and establishing a prediction model through neural network learning; obtaining current AGC instruction information, and predicting a predicted pressure corresponding to the pressure fluctuation position of the hydraulic system according to the current AGC instruction information by using the prediction model; adjusting the outer pressure of the hose at the pressure fluctuation position of the hydraulic system according to the predicted pressure and the obtained current pressure fluctuation, and obtaining a current stable pressure balancing the current pressure fluctuation; training the prediction model according to the current stable pressure, obtaining an optimized model, and balancing the pressure fluctuation of the hydraulic system according to the optimized model; the pressure fluctuation position of the hydraulic system comprises a guide vane oil path main valve, a guide vane oil path regulating valve, a paddle oil path main valve and a paddle oil path regulating valve; adjusting the outer pressure of the hose at the pressure fluctuation position of the hydraulic system according to the predicted pressure and the obtained current pressure fluctuation, and obtaining a current stable pressure balancing the current pressure fluctuation, comprises: adjusting the outer pressure of the hose at the pressure fluctuation position of the hydraulic system according to the predicted pressure, and obtaining a first adjusting pressure; obtaining a current pressure fluctuation, adjusting the outer pressure of the hose at the pressure fluctuation position of the hydraulic system according to the current pressure fluctuation and the first adjusting pressure, and obtaining a current stable pressure balancing the current pressure fluctuation; adjusting the outer pressure of the hose at the pressure fluctuation position of the hydraulic system according to the predicted pressure, and obtaining a first adjusting pressure, comprises: in the starting process of the hydraulic system, when the guide vane oil path main valve and the paddle oil path main valve are opened at the same time, a second pressure fluctuation and a fifth fluctuation time are generated, the outer pressures of the hoses at the outlet of the guide vane oil path main valve and the outlet of the paddle oil path main valve are adjusted according to the second pressure fluctuation and the fifth fluctuation time, and a first adjusting pressure of the guide vane oil path main valve and the paddle oil path main valve is obtained; in the running process of the hydraulic system, when the guide vane oil path regulating valve is opened, a fifth pressure fluctuation and a third fluctuation time are generated, the outer pressure of the hose of the guide vane oil path regulating valve is adjusted according to the fifth pressure fluctuation and the third fluctuation time, and a first adjusting pressure of the guide vane oil path regulating valve is obtained; when the paddle oil path regulating valve is opened, a sixth pressure fluctuation and a fourth fluctuation time are generated, the outer pressure of the hose of the paddle oil path regulating valve is adjusted according to the sixth pressure fluctuation and the fourth fluctuation time, and a first adjusting pressure of the paddle oil path regulating valve is obtained; when the paddle oil path regulating valve is closed, a fourth pressure fluctuation and a second fluctuation time are generated, the outer pressure of the hose of the paddle oil path regulating valve is adjusted according to the fourth pressure fluctuation and the second fluctuation time, and a first adjusting pressure of the paddle oil path regulating valve is obtained; when the guide vane oil path regulating valve is closed, a third pressure fluctuation and a first fluctuation time are generated, the outer pressure of the hose of the guide vane oil path regulating valve is adjusted according to the third pressure fluctuation and the first fluctuation time, and a first adjusting pressure of the guide vane oil path regulating valve is obtained; in the shutdown process of the hydraulic system, when the guide vane oil path main valve and the paddle oil path main valve are closed at the same time, a first pressure fluctuation is generated, the outer pressures of the hoses of the guide vane oil path main valve and the paddle oil path main valve are adjusted according to the first pressure fluctuation, and first adjusting pressures of the guide vane oil path main valve and the paddle oil path main valve are obtained respectively; The first pressure fluctuation, the second pressure fluctuation, the third pressure fluctuation, the fourth pressure fluctuation, the fifth pressure fluctuation and the sixth pressure fluctuation decrease in turn, and the first fluctuation time, the second fluctuation time, the third fluctuation time, the fourth fluctuation time and the fifth fluctuation time decrease in turn.

2. The method of balancing pressure fluctuations in a hydraulic system of claim 1, wherein, The current AGC instruction information is acquired, and the prediction model is used to predict the predicted pressure corresponding to the pressure fluctuation position of the hydraulic system according to the current AGC instruction information, including: The current AGC instruction information is acquired, and the prediction model is used to predict the predicted pressure corresponding to the pressure fluctuation position of the hydraulic system according to the current AGC instruction information, including: The current AGC instruction information is acquired, and the prediction model is used to predict the predicted pressure corresponding to the pressure fluctuation position of the hydraulic system according to the current AGC instruction information, including:

3. The method of balancing pressure fluctuations in a hydraulic system of claim 1 or 2, wherein, The historical AGC instruction information, the historical pressure fluctuation and the historical stable pressure are acquired, and the prediction model is established through neural network learning, including: The historical AGC instruction information, the historical pressure fluctuation and the historical stable pressure are acquired, and the prediction model is established through neural network learning, including:

4. The method of balancing pressure fluctuations in a hydraulic system of claim 1 or 2, wherein, According to the current stable pressure, the prediction model is trained to obtain an optimization model, and the balance of the pressure fluctuation of the hydraulic system is performed according to the optimization model, including: According to the current stable pressure, the prediction model is trained to obtain an optimization model, and the balance of the pressure fluctuation of the hydraulic system is performed according to the optimization model, including: The next AGC instruction information is acquired, and the optimization model is used to predict the next predicted pressure corresponding to the pressure fluctuation position of the hydraulic system according to the next AGC instruction information; According to the next predicted pressure and the acquired next pressure fluctuation, the outer pressure of the hose at the pressure fluctuation position of the hydraulic system is adjusted, and the next stable pressure balancing the next pressure fluctuation is obtained.

5. A hydraulic system pressure fluctuation equalizing device characterized by comprising: The balance method of the pressure fluctuation of the hydraulic system in any one of claims 1 to 4 is adopted, including: The acquisition module is used to acquire the historical AGC instruction information, the historical pressure fluctuation and the historical stable pressure, and to establish the prediction model through neural network learning; The prediction module is used to acquire the current AGC instruction information, and to predict the predicted pressure corresponding to the pressure fluctuation position of the hydraulic system according to the current AGC instruction information by using the prediction model; The adjustment module is used to adjust the outer pressure of the hose at the pressure fluctuation position of the hydraulic system according to the predicted pressure and the acquired current pressure fluctuation, and to obtain the current stable pressure balancing the current pressure fluctuation; The optimization module is used to train the prediction model according to the current stable pressure to obtain an optimization model, and to perform the balance of the pressure fluctuation of the hydraulic system according to the optimization model.

6. A system for balancing pressure fluctuations in a hydraulic system, comprising: It includes: The oil source device, the paddle servomotor reversing device, the guide vane servomotor reversing device, the paddle servomotor device, the guide vane servomotor device, the paddle circuit energy dissipation device, the guide vane circuit energy dissipation device, the storage device and the processing device; wherein: The oil source device is connected with the blade servomotor reversing device and the guide vane servomotor reversing device respectively, so as to provide hydraulic energy for working medium in the blade loop and the guide vane loop respectively; The blade servomotor reversing device is connected with the oil source device, the blade servomotor device and the blade loop energy dissipation device respectively, and the guide vane servomotor reversing device is connected with the oil source device, the guide vane servomotor device and the guide vane loop energy dissipation device respectively, so as to change the flow direction of hydraulic oil and control the hydraulic system to realize different working conditions; The blade servomotor device is connected with the blade servomotor reversing device and the blade loop energy dissipation device, so as to convert the hydraulic energy of the hydraulic oil of the hydraulic system into the mechanical energy of the blade servomotor, and then realize the control and adjustment of the blade opening degree; The guide vane servomotor device is connected with the guide vane servomotor reversing device and the guide vane loop energy dissipation device, so as to convert the hydraulic energy of the hydraulic oil of the hydraulic system into the mechanical energy of the guide vane servomotor, and then realize the control and adjustment of the guide vane opening degree; The blade loop energy dissipation device is connected with the blade servomotor reversing device and the blade servomotor device respectively, and the guide vane loop energy dissipation device is connected with the guide vane servomotor reversing device and the guide vane servomotor device respectively, so as to weaken the pressure fluctuation under different stable pressures; The storage device stores a computer program, a prediction model and an optimization model; The processing device is connected with the blade servomotor reversing device, the guide vane servomotor reversing device, the blade loop energy dissipation device, the guide vane loop energy dissipation device and the storage device, and the processing device realizes the steps of the method in any one of claims 1 to 4 when executing the computer program.

7. A computer readable storage medium having stored thereon a computer program, characterized in that, The computer program realizes the steps of the method in any one of claims 1 to 4 when executed by the processor.

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