Generated power control method, device and equipment of slope type gravity energy storage system, storage medium and program product

Abstract

The invention relates to a generation power control method, device and equipment of a slope type gravity energy storage system, a storage medium and a program product, and relates to the technical field of gravity energy storage. By adopting the method, the flexibility of the output power of the slope type gravity energy storage system can be improved. The method comprises the following steps: determining power generation distribution power of each current available power generation unit according to a total power generation power instruction and the number of the current available power generation units; according to the power generation influence factors and the power generation distribution power, the target speed per hour of the truck in the constant-speed gliding stage is determined; according to the target speed per hour and a preset acceleration condition of the truck, the accelerated gliding time of the truck is determined, and according to the accelerated gliding time, the decelerated gliding time of the truck is determined; and in response to a power generation starting signal for the slope type gravity energy storage system, according to the target speed per hour, the accelerated gliding time and the decelerated gliding time, multiple batches of trucks in each current available power generation unit are controlled to glide on the high-altitude platform of the current available power generation unit in sequence.

Description

Technical Field

[0001] The present application relates to the field of gravity energy storage technology, and in particular to a method, device, computer equipment, computer-readable storage medium, and computer program product for controlling power generation of a slope-type gravity energy storage system. Background Art

[0002] Slope gravity energy storage technology is a new type of energy storage method. This technology converts electrical energy into gravitational potential energy through a slope gravity energy storage system and uses it as a form of energy storage. Gravity energy storage can not only achieve long-term energy storage, but also quickly release energy when needed, thereby enhancing the peak-shaving capacity of the power grid.

[0003] For a single slope-type gravity energy storage system, the output power of the slope-type gravity energy storage is unstable, so it cannot be used as a reliable power source. In order to solve the problem of fluctuations in the output power of slope-type gravity energy storage, traditional technologies generally use a delayed compensation method, that is, using two or more independent systems, assuming that the mass and sliding speed of each truck are the same, and running at a certain interval start time, and setting the time interval for the release of trucks on different tracks, so that the peak and valley values ​​of the power generation of each track are staggered, so that the overall fluctuation amplitude of the power output can be effectively reduced. However, the traditional technology of releasing multi-track trucks at fixed intervals cannot effectively adjust the interval time according to the power generation power instructions of the power grid, and has the problem of low flexibility. Summary of the Invention

[0004] Based on this, it is necessary to provide a method, device, computer equipment, computer-readable storage medium and computer program product for controlling the power generation of a slope-type gravity energy storage system in response to the above technical problems.

[0005] In a first aspect, the present application provides a method for controlling power generation of a slope-type gravity energy storage system, comprising:

[0006] Obtaining a total power generation command for the slope-type gravity energy storage system, and determining the power generation allocation power of each currently available power generation unit based on the total power generation command and the number of currently available power generation units; the currently available power generation unit is a power generation device including two tracks;

[0007] Determining a target speed of the truck in the currently available power generation unit during a uniform descent phase based on the power generation influencing factors of the currently available power generation unit and the power generation allocation power;

[0008] Determining an acceleration time of the truck during an acceleration phase according to the target speed and a preset acceleration condition of the truck, and determining a deceleration time of the truck during a deceleration phase according to the acceleration phase;

[0009] In response to the power generation start signal for the slope-type gravity energy storage system, multiple batches of the trucks in each of the currently available power generation units are controlled to slide down in sequence on the high-altitude platform of the currently available power generation unit according to the target speed, the acceleration descent time and the deceleration descent time.

[0010] In one embodiment, the acceleration descent time and the deceleration descent time are the same; and controlling the multiple batches of trucks in each currently available power generation unit to sequentially descend on the high altitude platform of the currently available power generation unit according to the target speed, the acceleration descent time, and the deceleration descent time includes:

[0011] After the current batch of trucks starts to slide down on one track on the high-altitude platform, the current batch of trucks is controlled to reach the target speed within the accelerated descent time and enter the uniform descent stage; when it is recognized that the current batch of trucks has entered the target position, the next batch of trucks is controlled to start sliding down on another track on the high-altitude platform.

[0012] In one embodiment, before controlling the multiple batches of trucks in each currently available power generation unit to sequentially slide down the high altitude platform of the currently available power generation unit according to the target speed, the acceleration and deceleration time, the further step further includes:

[0013] According to the preset deceleration conditions of the truck and the target speed, the speed change information of the truck during the deceleration and descent phase is obtained; according to the speed change information and the deceleration and descent time, the travel distance of the truck during the deceleration and descent phase is determined, and according to the travel distance and the preset end point of the truck, the target position is determined.

[0014] In one embodiment, the method further comprises:

[0015] According to the target speed and the factors affecting the descent of the truck, the traction force of the truck on the generator in the currently available power generation unit during the uniform descent is obtained; according to the traction force of the generator and the power generation influencing factors of the currently available power generation unit, the electromagnetic torque of the generator of the truck during the uniform descent is determined; based on the electromagnetic torque of the generator, the preset acceleration condition and the preset deceleration condition are set.

[0016] In one embodiment, the method further comprises:

[0017] A speed setting value of the truck and an actual speed value of the truck measured by a speed sensor are obtained, and a speed deviation is determined based on the speed setting value and the actual speed value; a speed adjustment signal is generated based on the speed deviation, and a controller changes the current electromagnetic torque of the generator based on the speed adjustment signal to adjust the descent speed of the truck.

[0018] In one embodiment, the method further comprises:

[0019] In response to a power generation stop signal for the slope type gravity energy storage system, sending a new batch of the trucks is stopped, and power generation is ended when it is identified that all the trucks have slid down and stopped at a low altitude platform of the slope type gravity energy storage system.

[0020] In a second aspect, the present application further provides a power generation control device for a slope-type gravity energy storage system, comprising:

[0021] a power distribution module configured to obtain a total power generation instruction for the ramp-type gravity energy storage system and determine the power generation distribution power of each currently available power generation unit based on the total power generation instruction and the number of currently available power generation units; the currently available power generation unit is a power generation device comprising two tracks;

[0022] a speed determination module, configured to determine a target speed of the truck in the currently available power generation unit during a uniform descent phase based on the power generation influencing factors of the currently available power generation unit and the power generation allocation power;

[0023] a time determination module, configured to determine an acceleration slump time corresponding to the truck during an acceleration slump phase according to the target speed and a preset acceleration condition of the truck, and to determine a deceleration slump time corresponding to the truck during a deceleration slump phase according to the acceleration slump time;

[0024] The power generation start module is used to respond to the power generation start signal for the slope-type gravity energy storage system, and control the multiple batches of the trucks in each of the currently available power generation units to slide down in sequence on the high-altitude platform of the currently available power generation unit according to the target speed, the acceleration descent time and the deceleration descent time.

[0025] In a third aspect, the present application further provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0026] Obtain a total power generation instruction for the slope-type gravity energy storage system, and determine the power generation allocation power of each currently available power generation unit based on the total power generation instruction and the number of currently available power generation units; the currently available power generation unit is a power generation device comprising two tracks; according to the power generation influencing factors of the currently available power generation unit and the power generation allocation power, determine the target speed of the truck in the uniform descent stage in the currently available power generation unit; according to the target speed and the preset acceleration conditions of the truck, determine the acceleration descent time corresponding to the truck in the acceleration descent stage, and according to the acceleration descent time, determine the deceleration descent time corresponding to the truck in the deceleration descent stage; in response to the power generation start signal for the slope-type gravity energy storage system, control the multiple batches of trucks in each currently available power generation unit to slide down in sequence on the high-altitude platform of the currently available power generation unit based on the target speed, the acceleration descent time and the deceleration descent time.

[0027] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the following steps are implemented:

[0028] Obtain a total power generation instruction for the slope-type gravity energy storage system, and determine the power generation allocation power of each currently available power generation unit based on the total power generation instruction and the number of currently available power generation units; the currently available power generation unit is a power generation device comprising two tracks; according to the power generation influencing factors of the currently available power generation unit and the power generation allocation power, determine the target speed of the truck in the uniform descent stage in the currently available power generation unit; according to the target speed and the preset acceleration conditions of the truck, determine the acceleration descent time corresponding to the truck in the acceleration descent stage, and according to the acceleration descent time, determine the deceleration descent time corresponding to the truck in the deceleration descent stage; in response to the power generation start signal for the slope-type gravity energy storage system, control the multiple batches of trucks in each currently available power generation unit to slide down in sequence on the high-altitude platform of the currently available power generation unit based on the target speed, the acceleration descent time and the deceleration descent time.

[0029] In a fifth aspect, the present application further provides a computer program product, comprising a computer program, which, when executed by a processor, implements the following steps:

[0030] Obtain a total power generation instruction for the slope-type gravity energy storage system, and determine the power generation allocation power of each currently available power generation unit based on the total power generation instruction and the number of currently available power generation units; the currently available power generation unit is a power generation device comprising two tracks; according to the power generation influencing factors of the currently available power generation unit and the power generation allocation power, determine the target speed of the truck in the uniform descent stage in the currently available power generation unit; according to the target speed and the preset acceleration conditions of the truck, determine the acceleration descent time corresponding to the truck in the acceleration descent stage, and according to the acceleration descent time, determine the deceleration descent time corresponding to the truck in the deceleration descent stage; in response to the power generation start signal for the slope-type gravity energy storage system, control the multiple batches of trucks in each currently available power generation unit to slide down in sequence on the high-altitude platform of the currently available power generation unit based on the target speed, the acceleration descent time and the deceleration descent time.

[0031] The power generation control method, device, computer equipment, computer-readable storage medium and computer program product of the above-mentioned slope-type gravity energy storage system first determine the power generation allocation power of each currently available power generation unit based on the total power generation instruction and the number of currently available power generation units, and then calculate the optimal falling speed of the truck in the uniform descent stage as the target speed based on the power generation influencing factors and the power generation allocation power. Then, based on the target speed and the preset acceleration conditions of the truck, calculate the time required for the truck in the acceleration descent stage and the deceleration descent stage, so as to regulate the initial falling time of the next batch of trucks, thereby improving the stability and flexibility of the output power of the slope-type gravity energy storage system. Compared with the delay compensation method in traditional technology, the present application can more flexibly regulate the falling time of the truck, reduce the power fluctuation amplitude, improve its adaptability to the power grid and the power quality, and at the same time optimize the energy conversion efficiency and operational reliability of the system, and promote the widespread application and development of gravity energy storage technology in the energy field. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments of the present application or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 This is a diagram of an application environment of a method for controlling power generation of a slope-type gravity energy storage system in one embodiment;

[0034] Figure 2 1 is a flow chart of a method for controlling power generation of a slope-type gravity energy storage system according to an embodiment;

[0035] Figure 3 A constant speed-power curve diagram between a truck and a generator power in one embodiment;

[0036] Figure 4 A power superposition diagram of a dual-track power generation process before and after optimization in one embodiment;

[0037] Figure 5 1. A schematic diagram of a process for real-time speed control of a truck in one embodiment;

[0038] Figure 6 Schematic diagram of a flow chart of a method for controlling power generation of a slope-type gravity energy storage system in a specific embodiment;

[0039] Figure 7 This is a structural block diagram of a power generation control device for a slope-type gravity energy storage system in one embodiment;

[0040] Figure 8 FIG. 1 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0042] The power generation control method of the slope type gravity energy storage system provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown, the slope gravity energy storage system mainly includes a high-altitude platform, a low-altitude platform, a track connecting the two platforms, a truck, a power generation unit, a transmission mechanism, and a control terminal. The control terminal can be, but is not limited to, various personal computers, laptops, smartphones, and tablet computers.

[0043] In one embodiment, Figure 2 As shown, a method for controlling the power generation of a slope type gravity energy storage system is provided. Figure 1 The control terminal in the example is used to illustrate the process, including the following steps:

[0044] Step S201, obtain the total power generation instruction for the slope type gravity energy storage system, and determine the power generation allocation power of each currently available power generation unit according to the total power generation instruction and the number of currently available power generation units; the currently available power generation unit is a power generation device including two tracks.

[0045] Specifically, the control terminal obtains a total power generation instruction for the slope-type gravity energy storage system, and calculates the power generation distribution power of each currently available power generation unit according to the total power generation instruction and the number of currently available power generation units.

[0046] For example, assuming that there are n power generation units in a state that can work simultaneously, without considering the influence of external factors such as the different friction of each track, the ideal situation is to evenly distribute the total power generation command to each power generation unit that can currently work simultaneously. Then the power P allocated to each power generation unit is i :

[0047] (i=1,2,3,.....,n)

[0048] Step S202 : determining the target speed of the truck in the currently available power generation unit during the uniform descent phase according to the power generation influencing factors and the power generation allocation power of the currently available power generation unit.

[0049] Among them, factors affecting power generation include but are not limited to the mass of the truck, the slope inclination angle, the air resistance coefficient, the windward area of ​​the truck, and the air density.

[0050] Specifically, because the speed of the truck changes rapidly during the acceleration and deceleration phases of energy release, the power generation is unstable. Therefore, the power generation requirement is mainly concentrated in the stage of uniform motion of the truck. Therefore, when the truck is moving at a uniform speed, its power generation should be slightly greater than or equal to the grid power generation instruction P i , the net force in the direction of motion is zero when the speed is uniform. At this time, the traction force F of the truck on the transmission system t for:

[0051]

[0052] In the above formula, m is the mass of the truck, g is the acceleration of gravity, β is the slope angle, C D is the air resistance coefficient, f is the rolling friction coefficient, A is the frontal area of ​​the truck, and ρ is the air density. i Calculate the mechanical power of a single-track permanent magnet synchronous motor. m represents the mechanical power provided by the truck to the system, η represents the power generation efficiency of the generator, and the formula for the mechanical power corresponding to the uniform speed is obtained as follows: Figure 3 The uniform speed-power curve shown is:

[0053]

[0054] Under the premise of keeping all equipment safe, the load truck should have an adjustable maximum speed range, according to the power generation power P required for a single slope load system. iThe speed V that the truck should maintain during the uniform speed period can be calculated by reverse calculation. <V max , to obtain the optimal uniform speed of the truck as the target speed, and avoid energy loss caused by inappropriate falling speed.

[0055] Step S203, determining the acceleration time of the truck in the acceleration downhill phase according to the target speed and the preset acceleration condition of the truck, and determining the deceleration time of the truck in the deceleration downhill phase according to the acceleration downhill time.

[0056] Specifically, for the traction force F of the transmission system in the currently available power generation unit t The equation is:

[0057]

[0058] In the above formula, T E is the electromagnetic torque of the generator, i G is the transmission ratio of the transmission system, η T is the mechanical efficiency of the transmission system, R is the radius of the transmission structure, and when the optimal uniform speed is known, the stator current (stator winding current) dq-axis component i of the permanent magnet generator is calculated according to the electromagnetic torque equation. d and i q :

[0059]

[0060] In the above formula, p is the number of rotor poles of the generator, Ψ d and Ψ q is the stator flux dq axis component. Based on the above equation, the stator current i can be obtained d and i q This relationship allows the generator to output a stable electromagnetic torque. Given the optimal uniform speed V, the change in truck speed from acceleration to uniform speed can be calculated, yielding the time t1 required for the acceleration phase. During the deceleration process of the trucks, considering power superposition, the time it takes for the first batch of trucks to decelerate to the bottom of the slope should be the same as the time it takes for the second batch of trucks to accelerate, thereby minimizing fluctuations in generated power.

[0061] Step S204, in response to the power generation start signal for the slope-type gravity energy storage system, multiple batches of trucks in each currently available power generation unit are controlled to sequentially slide down on the high-altitude platform of the currently available power generation unit according to the target speed, acceleration and deceleration time.

[0062] Specifically, while the first batch of trucks is descending, the second batch of trucks should be in place at the top of the slope, braked and parked, ready to descend at any time. During the deceleration process, the time it takes for the first batch of trucks to decelerate to the bottom of the slope should be the same as the acceleration phase for the second batch of trucks, considering power superposition. This reduces fluctuations in generated power. Assuming the time required for the deceleration phase of the trucks to descend, t2 = t1, according to the delay-compensated power curve, when the trucks on one track release energy and reach the descent phase, the other truck on the other track is controlled to begin accelerating downward.

[0063] The power generation control method of the above-mentioned slope-type gravity energy storage system first determines the power generation allocation power of each currently available power generation unit according to the total power generation power instruction and the number of currently available power generation units, and then calculates the optimal falling speed of the truck in the uniform descent stage according to the power generation influencing factors and the power generation allocation power as the target speed. Then, according to the target speed and the preset acceleration conditions of the truck, the time required for the truck in the acceleration descent stage and the deceleration descent stage is calculated, so as to regulate the initial falling time of the next batch of trucks, thereby improving the stability and flexibility of the output power of the slope-type gravity energy storage system. Compared with the delay compensation method in traditional technology, the present application can more flexibly regulate the falling time of the truck, reduce the power fluctuation amplitude, improve its adaptability to the power grid and the power quality, and at the same time optimize the energy conversion efficiency and operational reliability of the system, and promote the widespread application and development of gravity energy storage technology in the energy field.

[0064] In one embodiment, the acceleration and deceleration time are the same. In step S201, based on the target speed, the acceleration and deceleration time, multiple batches of trucks in each currently available power generation unit are controlled to sequentially descend on the high-altitude platform of the currently available power generation unit, specifically comprising the following steps:

[0065] After the current batch of trucks starts to slide down on one track of the high-altitude platform, the current batch of trucks is controlled to reach the target speed within the accelerated descent time and enter the uniform descent stage; when it is recognized that the current batch of trucks has entered the target position, the next batch of trucks is controlled to start sliding down on another track of the high-altitude platform.

[0066] Specifically, under actual working conditions, due to the slope length, single track operation power generation does not meet the actual power generation needs, and it takes a while to run after the single track operation ends, so in this embodiment, the power of two tracks is alternately superimposed to achieve stable power output. Figure 4As shown in the figure, (a) shows the power superposition diagram of the dual-track energy release process before optimization, and (b) shows the power superposition diagram of the dual-track energy release process after optimization. While the first batch of trucks is descending, the second batch of trucks should be in place at the top of the slope, parked with the brakes, and ready to descend at any time. During the deceleration process of the trucks, from the perspective of power superposition, the time it takes for the first batch of trucks to decelerate to the bottom of the slope should be the same as the time it takes for the second batch of trucks to accelerate, thereby reducing the fluctuation of the generated power. Assume that the time required for the trucks to decelerate and descend is t2 = t1. According to the delay-compensated power curve, when the trucks on one track release energy and reach the descent stage, the other batch of trucks is controlled to begin accelerating down the other track.

[0067] In one embodiment, before controlling the multiple batches of trucks in each currently available power generation unit to sequentially descend on the high-altitude platform of the currently available power generation unit according to the target speed, acceleration and deceleration time, the method of the present application further includes the following steps:

[0068] According to the preset deceleration conditions and target speed of the truck, the speed change information of the truck during the deceleration and descent phase is obtained; according to the speed change information and the deceleration and descent time, the driving distance of the truck during the deceleration and descent phase is determined, and the target position is determined according to the driving distance and the preset end point of the truck.

[0069] Specifically, because the moment the current batch of trucks begins its deceleration phase also coincides with the moment the next batch of trucks preparing for power generation begins its acceleration phase, this timing needs to be determined. The speed change information of the trucks during the deceleration phase can be estimated based on the trucks' preset deceleration conditions and target speed. The distance traveled during the deceleration phase is then calculated based on this speed change information and the deceleration time. The target position is determined when the distance between the trucks and the destination and the distance traveled are equal.

[0070] In one embodiment, the method of the present application further includes the following steps:

[0071] According to the target speed and the factors affecting the descent of the truck, the traction force of the generator of the currently available power generation unit of the truck during the uniform descent is obtained; according to the traction force of the generator and the power generation influencing factors of the currently available power generation unit, the electromagnetic torque of the generator of the truck during the uniform descent is determined; based on the electromagnetic torque of the generator, the preset acceleration conditions and the preset deceleration conditions are set.

[0072] When the truck moves at a constant speed, its power generation should be slightly greater than or equal to the grid power generation instruction P i , the net force in the direction of motion is zero when the speed is uniform. At this time, the traction force F of the truck on the transmission system t for:

[0073]

[0074] In the above formula, m is the mass of the truck, g is the acceleration of gravity, β is the slope angle, C D is the air resistance coefficient, f is the rolling friction coefficient, A is the frontal area of ​​the truck, and ρ is the air density. i Calculate the mechanical power of a single-track permanent magnet synchronous motor. m represents the mechanical power provided by the truck to the system, and η represents the power generation efficiency of the generator. The formula for the mechanical power corresponding to the uniform speed is:

[0075]

[0076] Under the premise of keeping all equipment safe, the load truck should have an adjustable maximum speed range, according to the power generation power P required for a single slope load system. i The speed V that the truck should maintain during the uniform speed period can be calculated by reverse calculation. <V max , to obtain the optimal uniform speed of the truck as the target speed, and avoid energy loss caused by inappropriate falling speed.

[0077] The traction force F of the drive system in the currently available power generation unit t The equation is:

[0078]

[0079] In the above formula, T E is the electromagnetic torque of the generator, i G is the transmission ratio of the transmission system, η T is the mechanical efficiency of the transmission system, R is the radius of the transmission structure, and when the optimal uniform speed is known, the stator current (stator winding current) dq-axis component i of the permanent magnet generator is calculated according to the electromagnetic torque equation. d and i q :

[0080]

[0081] In the above formula, p is the number of rotor poles of the generator, Ψ d and Ψ q is the stator flux dq axis component. Based on the above equation, the stator current i can be obtained d and i q The generator can be set to output a stable target electromagnetic torque. During the acceleration and deceleration phase, a current electromagnetic torque smaller than the target electromagnetic torque can be set as the preset acceleration condition. During the deceleration and deceleration phase, a current electromagnetic torque larger than the target electromagnetic torque can be set as the preset deceleration condition.

[0082] In one embodiment, the method of the present application further includes the following steps:

[0083] The speed setting value of the truck and the actual speed value of the truck measured by the speed sensor are obtained, and the speed deviation is determined based on the speed setting value and the actual speed value; a speed adjustment signal is generated based on the speed deviation, and the controller changes the current electromagnetic torque of the generator according to the speed adjustment signal to adjust the descent speed of the truck.

[0084] It should be noted that due to friction changes during the descent of the truck, as well as external factors such as the weather, the actual speed may vary. A speed sensor equipped with a wireless module is installed on the truck to measure the truck's real-time speed (Vr) and monitor the system's operating parameters. When the sensor detects the real-time speed, the PI controller adjusts the truck's speed based on feedback, compensating for any impact on power output. This ensures that the load's movement and power generation processes are better aligned, maintaining stable power output.

[0085]

[0086] Electromagnetic torque: V(t)+K I

[0087] Specifically, if Figure 5 As shown, the PI controller calculates the speed setpoint V(t) based on the grid power command and the sensor's real-time speed to obtain the speed deviation ∆V. This controller then calculates the motor's electromagnetic torque reference value, adjusts the current in the permanent magnet synchronous generator's stator winding, and changes the magnitude of the electromagnetic torque, increasing or decreasing the vehicle's descent speed until the energy release process is complete. During the drop, the interval between load releases is dynamically adjusted based on the system's real-time status and the preset power target, ensuring the generator's output power remains within the set range and ensuring stable system operation. Furthermore, sensors monitor the operating speed in real time to ensure it does not exceed safety limits. If an abnormal increase in speed is detected, the system can initiate emergency braking to prevent accidents.

[0088] In one embodiment, the method of the present application further includes the following steps:

[0089] In response to the power generation stop signal for the slope type gravity energy storage system, sending of a new batch of trucks is stopped, and power generation is ended when it is identified that all the trucks have slid down and stopped at the low altitude platform of the slope type gravity energy storage system.

[0090] Specifically, the control terminal stops sending a new batch of trucks in response to the power generation stop signal for the sloped gravity energy storage system, and ends power generation when it identifies that all the trucks have slid down and stopped on the low-altitude platform of the sloped gravity energy storage system, thereby flexibly controlling the start and stop of the sloped gravity energy storage system according to the power generation start signal and the power generation stop signal.

[0091] In one embodiment, Figure 6 As shown, a method for controlling power generation of a slope-type gravity energy storage system in a specific embodiment is provided, which specifically includes the following steps:

[0092] Step S601: Obtain a total power generation instruction for the slope-type gravity energy storage system, and determine the power generation allocation power of each currently available power generation unit according to the total power generation instruction and the number of currently available power generation units.

[0093] Step S602 : determining the target speed of the truck in the currently available power generation unit during the uniform descent phase according to the power generation influencing factors and the power generation allocation power of the currently available power generation unit.

[0094] Step S603, determining the acceleration time of the truck during the acceleration and descent phase according to the target speed and the preset acceleration condition of the truck, and determining the deceleration time of the truck during the deceleration and descent phase according to the descent time.

[0095] Step S604, based on the preset deceleration conditions and target speed of the truck, obtain the speed change information of the truck during the deceleration and descent phase; based on the speed change information and the deceleration and descent time, determine the distance traveled by the truck during the deceleration and descent phase, and determine the target position based on the travel distance and the preset end point of the truck.

[0096] Step S605: After the current batch of trucks starts to slide down on a track on the high-altitude platform, the current batch of trucks is controlled to reach the target speed within the accelerated descent time and enter the uniform descent stage; when it is recognized that the current batch of trucks has entered the target position, the next batch of trucks is controlled to start sliding down on another track on the high-altitude platform.

[0097] Step S606, obtain the speed setting value of the truck and the actual speed value of the truck measured by the speed sensor, determine the speed deviation based on the speed setting value and the actual speed value; generate a speed adjustment signal based on the speed deviation, and the controller changes the current electromagnetic torque of the generator according to the speed adjustment signal to adjust the descent speed of the truck.

[0098] Step S607, in response to the power generation stop signal for the slope type gravity energy storage system, stop sending a new batch of trucks, and end power generation when it is identified that all the trucks have slid down and stopped at the low altitude platform of the slope type gravity energy storage system.

[0099] The beneficial effects brought about by the above embodiment are as follows:

[0100] 1) This application allocates the optimal falling speed of the truck in the power generation unit as the target speed according to the total power generation power instruction, reduces the insufficient or redundant power generation caused by too fast or too slow speed in the uniform speed process, makes full use of the gravitational potential energy release process, and improves the power generation efficiency of the power generation process.

[0101] 2) This application achieves flexible adjustment of output power by predicting and controlling the downhill interval of the truck, while effectively reducing the power fluctuation amplitude.

[0102] 3) This application also collects real-time data from sensors and adjusts the descent speed of the truck in a timely manner based on the system's control algorithm to achieve precise control of the slope-type gravity energy storage system, making it better adapted to different grid operating conditions and requirements.

[0103] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0104] Based on the same inventive concept, the embodiments of the present application also provide a power generation control device for a ramp-type gravity energy storage system for implementing the power generation control method for the ramp-type gravity energy storage system involved above. The implementation solution provided by this device is similar to the implementation solution described in the above method. Therefore, the specific limitations of the power generation control device for one or more ramp-type gravity energy storage systems provided below can be found in the limitations of the power generation control method for the ramp-type gravity energy storage system above, and will not be repeated here.

[0105] In an exemplary embodiment, Figure 7 As shown, a power generation control device for a slope-type gravity energy storage system is provided, comprising:

[0106] The power allocation module 701 is used to obtain a total power generation instruction for the ramp-type gravity energy storage system and determine the power generation allocation power of each currently available power generation unit based on the total power generation instruction and the number of currently available power generation units; the currently available power generation unit is a power generation device comprising two tracks;

[0107] The speed determination module 702 is used to determine the target speed of the truck in the currently available power generation unit during the uniform descent phase based on the power generation influencing factors and the power generation allocation power of the currently available power generation unit;

[0108] The time determination module 703 is used to determine the acceleration time of the truck during the acceleration and descent phase according to the target speed and the preset acceleration condition of the truck, and to determine the deceleration time of the truck during the deceleration and descent phase according to the acceleration and descent time;

[0109] The power generation start module 704 is used to respond to the power generation start signal for the slope-type gravity energy storage system, and control multiple batches of trucks in each currently available power generation unit to slide down in sequence on the high-altitude platform of the currently available power generation unit according to the target speed, acceleration and deceleration time.

[0110] In one embodiment, the acceleration slump time is the same as the deceleration slump time; the power generation start module 704 is also used to control the current batch of trucks to reach the target speed within the acceleration slump time and enter the uniform slump stage after the current batch of trucks starts to slide on a track on the high-altitude platform; when it is recognized that the current batch of trucks has entered the target position, the next batch of trucks is controlled to start sliding on another track on the high-altitude platform.

[0111] In one embodiment, the power generation control device of the slope-type gravity energy storage system also includes a position determination module, which is used to obtain the speed change information of the truck during the deceleration and descent phase based on the preset deceleration conditions of the truck and the target speed; determine the travel distance of the truck during the deceleration and descent phase based on the speed change information and the deceleration and descent time, and determine the target position based on the travel distance and the preset end point of the truck.

[0112] In one embodiment, the power generation control device of the slope-type gravity energy storage system also includes a condition setting module, which is used to obtain the generator traction force of the truck on the currently available power generation unit during the uniform descent stage based on the target speed and the factors affecting the descent of the truck; determine the generator electromagnetic torque of the truck during the uniform descent stage based on the generator traction force and the power generation influencing factors of the currently available power generation unit; and set the preset acceleration condition and the preset deceleration condition based on the generator electromagnetic torque.

[0113] In one embodiment, the power generation control device of the slope-type gravity energy storage system also includes a speed adjustment module, which is used to obtain the speed setting value of the truck and the actual speed value of the truck measured by the speed sensor, and determine the speed deviation based on the speed setting value and the actual speed value; generate a speed adjustment signal based on the speed deviation, and the controller changes the current electromagnetic torque of the generator according to the speed adjustment signal to adjust the descent speed of the truck.

[0114] In one embodiment, the power generation control device of the slope-type gravity energy storage system further includes a power generation stop module, which is used to stop sending a new batch of the trucks in response to a power generation stop signal for the slope-type gravity energy storage system, and to end power generation when it is identified that all the trucks have slid down and stopped on the low-altitude platform of the slope-type gravity energy storage system.

[0115] Each module in the power generation control device for the aforementioned ramp-type gravity energy storage system can be implemented in whole or in part through software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in hardware form, or can be stored in a computer device's memory in software form, allowing the processor to call and execute the corresponding operations of each module.

[0116] In an exemplary embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as shown in FIG. Figure 8As shown. The computer device includes a processor, memory, an input / output interface, a communication interface, a display unit, and an input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are connected to the system bus via the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals via wired or wireless communication, and the wireless communication can be achieved via Wi-Fi, a mobile cellular network, near-field communication (NFC), or other technologies. When executed by the processor, the computer program implements a method for controlling the power generation of a slope-type gravity energy storage system. The display unit of the computer device is used to form a visually visible image and can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device casing, or an external keyboard, touchpad or mouse.

[0117] Those skilled in the art will understand that Figure 8 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0118] In one embodiment, a computer device is further provided, including a memory and a processor. The memory stores a computer program, and the processor implements the steps in the above method embodiments when executing the computer program.

[0119] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0120] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0121] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0122] Those skilled in the art will understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. In particular, any reference to memory, database, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the various embodiments provided herein may be, but are not limited to, general-purpose processors, central processing units (CPUs), graphics processing units (GPUs), digital signal processors (DSPs), programmable logic devices (PLDs), quantum computing-based data processing logic devices, artificial intelligence (AI) processors, and the like.

[0123] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, 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 application.

[0124] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A method for controlling power generation of a slope-type gravity energy storage system, characterized in that: The method comprises: Obtaining a total power generation command for the slope-type gravity energy storage system, and determining the power generation allocation power of each currently available power generation unit based on the total power generation command and the number of currently available power generation units; the currently available power generation unit is a power generation device including two tracks; Determining a target speed of the truck in the currently available power generation unit during a uniform descent phase based on the power generation influencing factors of the currently available power generation unit and the power generation allocation power; Determining an acceleration time of the truck during an acceleration phase according to the target speed and a preset acceleration condition of the truck, and determining a deceleration time of the truck during a deceleration phase according to the acceleration phase; In response to the power generation start signal for the slope-type gravity energy storage system, multiple batches of the trucks in each of the currently available power generation units are controlled to slide down in sequence on the high-altitude platform of the currently available power generation unit according to the target speed, the acceleration descent time and the deceleration descent time.

2. The method according to claim 1, characterized in that The acceleration descent time and the deceleration descent time are the same; and controlling the multiple batches of trucks in each currently available power generation unit to sequentially descend on the high altitude platform of the currently available power generation unit according to the target speed, the acceleration descent time, and the deceleration descent time includes: After the current batch of trucks starts to slide down a track on the high altitude platform, controlling the current batch of trucks to reach the target speed within the accelerated descent time and enter the uniform descent stage; When it is recognized that the current batch of trucks has entered the target position, the next batch of trucks is controlled to start sliding down another track on the high-altitude platform.

3. The method according to claim 2, characterized in that Before controlling the multiple batches of trucks in each currently available power generation unit to sequentially slide down on the high altitude platform of the currently available power generation unit according to the target speed, the acceleration and deceleration sliding times, the method further includes: According to the preset deceleration condition of the truck and the target speed, obtaining speed change information of the truck during the deceleration and gliding phase; The travel distance of the truck during the deceleration and descent phase is determined based on the speed change information and the deceleration and descent time, and the target position is determined based on the travel distance and a preset destination of the truck.

4. The method according to claim 3, characterized in that The method further comprises: Obtaining, according to the target speed and the factors affecting the decline of the truck, a traction force exerted by the truck on the generator in the currently available power generation unit during the uniform decline phase; determining the electromagnetic torque of the generator of the truck during the uniform descent phase according to the generator traction force and the power generation influencing factors of the currently available power generation unit; The preset acceleration condition and the preset deceleration condition are set based on the generator electromagnetic torque.

5. The method according to claim 1, wherein The method further comprises: Obtaining a speed setting value of the truck and an actual speed value of the truck measured by a speed sensor, and determining a speed deviation based on the speed setting value and the actual speed value; A speed adjustment signal is generated according to the speed deviation, and a controller changes the current electromagnetic torque of the generator according to the speed adjustment signal to adjust the downward sliding speed of the truck.

6. The method according to any one of claims 1 to 5, characterized in that The method further comprises: In response to a power generation stop signal for the slope type gravity energy storage system, sending a new batch of the trucks is stopped, and power generation is ended when it is identified that all the trucks have slid down and stopped at a low altitude platform of the slope type gravity energy storage system.

7. A power generation control device for a slope-type gravity energy storage system, characterized in that: The device comprises: A power distribution module is configured to obtain a total power generation instruction for the ramp-type gravity energy storage system and determine the power generation distribution power of each currently available power generation unit based on the total power generation instruction and the number of currently available power generation units; the currently available power generation unit is a power generation device comprising two tracks; a speed determination module, configured to determine a target speed of the truck in the currently available power generation unit during a uniform descent phase based on the power generation influencing factors of the currently available power generation unit and the power generation allocation power; a time determination module, configured to determine an acceleration slump time corresponding to the truck during an acceleration slump phase according to the target speed and a preset acceleration condition of the truck, and to determine a deceleration slump time corresponding to the truck during a deceleration slump phase according to the acceleration slump time; The power generation start module is used to respond to the power generation start signal for the slope-type gravity energy storage system, and control the multiple batches of the trucks in each of the currently available power generation units to slide down in sequence on the high-altitude platform of the currently available power generation unit according to the target speed, the acceleration descent time and the deceleration descent time.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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