Cooperative operation regulation and control method, device and equipment for water-wind-light-storage multi-energy complementary system

Abstract

The invention relates to the technical field of renewable energy cooperative control, and discloses a cooperative operation regulation and control method, device and equipment for a water-wind-light-storage multi-energy complementary system, and the method comprises the steps: obtaining the output power of each power generation device in the multi-energy complementary system, the charging and discharging power of an energy storage device, and the vibration region range of a hydroelectric generating set; the output power of each power generation device, the charging and discharging power of the energy storage device and the vibration area range are input into a pre-established optimization strategy model, the optimization strategy model is solved to obtain an optimization strategy of the multi-energy complementary system in the next rolling window, and an objective function of the optimization strategy model comprises a vibration area penalty term; the representation is used for representing a loss value caused when the output power of the hydroelectric generating set falls into the vibration area range; and regulating and controlling the hydroelectric generating set and the energy storage device according to the optimization strategy and the real-time operation parameters of the multi-energy complementary system in the next rolling window. The probability that hydroelectric power falls into a dangerous zone is reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] This invention relates to the field of renewable energy collaborative control technology, specifically to a method, apparatus, and equipment for the collaborative operation and control of a multi-energy complementary system of hydro, wind, solar, and energy storage. Background Technology

[0002] As the global energy structure transitions towards a low-carbon model, the proportion of renewable energy sources, such as hydropower, wind power, and solar power, in the power system continues to increase. However, wind and solar power generation are characterized by significant intermittency and volatility, and their output is greatly affected by natural conditions. Direct grid connection may lead to problems such as power imbalance and frequency exceeding limits, threatening the safe and stable operation of the power grid. Meanwhile, although hydropower has good regulation capabilities, its operation is strictly limited by the vibration zone of the hydropower unit. That is, when operating within a specific load range, the turbine may suffer mechanical damage due to hydraulic vibration, cavitation, and other effects, shortening the equipment's lifespan.

[0003] Against this backdrop, constructing a multi-energy complementary system integrating hydropower, wind power, solar power, and energy storage, and optimizing the output of each unit through real-time coordinated control, has become a key technological path to enhance the absorption capacity of renewable energy and ensure the safe and economical operation of the power grid. However, existing control methods mostly focus on economic dispatch or power balance, failing to fully consider the dynamic matching problem between the vibration zone constraints of hydropower units and wind and solar fluctuations. This leads to frequent crossings of vibration zones by hydropower units when rapidly responding to wind and solar fluctuations, which may cause equipment fatigue or even failure, reducing system reliability. Summary of the Invention

[0004] In view of this, the present invention provides a method, device and equipment for coordinated operation and control of a multi-energy complementary system of hydropower, wind power, solar power and storage, in order to solve the problem that frequent crossing of vibration zones by hydropower units when responding quickly to wind and solar fluctuations may cause equipment fatigue or even failure, thereby reducing the reliability of the system.

[0005] In a first aspect, the present invention provides a method for coordinated operation and control of a multi-energy complementary system of hydropower, wind power, solar power, and energy storage, applied to such a system. The method includes: acquiring the output power of each power generation unit, the charging and discharging power of the energy storage unit, and the vibration zone range of the hydropower unit in the multi-energy complementary system; inputting the output power of each power generation unit, the charging and discharging power of the energy storage unit, and the vibration zone range of the hydropower unit into a pre-established optimization strategy model; solving the optimization strategy model to obtain the optimization strategy for the multi-energy complementary system in the next rolling window; the optimization strategy includes the output power of the hydropower unit and the charging and discharging power of the energy storage unit; the objective function of the optimization strategy model includes a vibration zone penalty term, used to characterize the loss value caused when the output power of the hydropower unit falls within the vibration zone range; and controlling the hydropower unit and energy storage unit in the multi-energy complementary system according to the optimization strategy and the real-time operating parameters of the multi-energy complementary system in the next rolling window.

[0006] The method provided in this invention introduces a vibration zone penalty term into the objective function when calculating the optimization strategy for compensating wind and solar power generation devices by hydropower units and energy storage devices in a multi-energy complementary system. This fully considers the damage caused to the hydropower units when they pass through the vibration zone, thereby enabling the hydropower units to actively avoid the vibration zone when solving the objective function, reducing the probability of hydropower falling into the dangerous range, reducing the mechanical losses caused by resonance, extending equipment life, and reducing maintenance costs.

[0007] In one alternative implementation, the objective function is established based on the sum of the hydropower generation cost, wind and solar power loss cost, energy storage state of charge deviation penalty, and vibration zone penalty, wherein the optimization strategy obtained by solving the optimization strategy model minimizes the value of the objective function.

[0008] In one optional implementation, the hydropower units and energy storage devices in the multi-energy complementary system are regulated according to the optimization strategy and the real-time operating data of the multi-energy complementary system in the next rolling window. This includes: generating reference commands for each power generation unit and energy storage device in the next rolling window according to the optimization strategy, the reference commands being used to regulate the power generation unit and energy storage device; collecting the operating parameters of each power generation unit and energy storage device in real time in the next rolling window, and adaptively regulating the power generation unit and energy storage device according to the operating parameters.

[0009] In one optional implementation, the operating parameters of each power generation device and energy storage device are collected in real time within the next rolling window, and adaptive control of the power generation device and energy storage device is performed based on the operating parameters, including: obtaining the actual output power of the wind and solar power generation device; if the actual output power of the wind and solar power generation device is less than the predicted output power, and the first deviation between the actual output power and the predicted output power is greater than a preset value, the discharge power of the energy storage device is determined based on the maximum power of the energy storage device and the first deviation within a first time period, and the energy storage device is controlled to discharge according to the discharge power; and the output power of the hydropower unit is adjusted according to the maximum ramp rate of the hydropower unit within a second time period.

[0010] In one optional implementation, the operating parameters of each power generation device and energy storage device are collected in real time within the next scrolling window, and adaptive control of the power generation device and energy storage device is performed based on the operating parameters, including: obtaining the actual output power of the wind and solar power generation device; if the actual output power of the wind and solar power generation device is less than the predicted output power, and the first deviation is less than or equal to a preset value, the adjustable range of the hydropower unit is determined according to the vibration zone range of the hydropower unit; if the first deviation is within the adjustable range of the hydropower unit, the output power of the hydropower unit is adjusted according to the first deviation.

[0011] In one optional implementation, if the first deviation is outside the adjustable range of the hydropower unit, the hydropower unit is regulated according to its maximum output power; a second deviation between the current power and the predicted output power is determined based on the regulated output power of the hydropower unit and the first deviation; and the discharge power of the energy storage device is regulated based on the second deviation.

[0012] In one optional implementation, regulating the discharge power of the energy storage device according to the second deviation includes: calculating the maximum discharge power of the energy storage device based on the state-of-charge limit constraint of the energy storage device; if the maximum discharge power of the energy storage device is greater than or equal to the second deviation, regulating the discharge power of the energy storage device according to the second deviation.

[0013] In one optional implementation, if the maximum discharge power of the energy storage device is less than the second deviation, the energy storage device is regulated according to the maximum discharge power of the energy storage device; a third deviation between the current power and the predicted output power is determined based on the output power of the hydropower unit after regulation, the maximum discharge power of the energy storage device, and the first deviation; and the output power is regulated by controlling the hydropower unit to pass through the vibration zone.

[0014] Secondly, this invention provides a coordinated operation control device for a multi-energy complementary system (hydropower, wind power, solar power, and energy storage), applied to such a system. The device includes: a data acquisition device for acquiring the output power of each power generation unit, the charging and discharging power of the energy storage unit, and the vibration zone range of the hydropower unit in the multi-energy complementary system; an optimization strategy calculation module for inputting the output power of each power generation unit, the charging and discharging power of the energy storage unit, and the vibration zone range of the hydropower unit into a pre-established optimization strategy model, solving the optimization strategy model to obtain the optimization strategy for the multi-energy complementary system in the next rolling window. The optimization strategy includes the output power of the hydropower unit and the charging and discharging power of the energy storage unit. The objective function of the optimization strategy model includes a vibration zone penalty term, which characterizes the loss value caused when the output power of the hydropower unit falls within the vibration zone range; and a control module for controlling the hydropower unit and energy storage unit in the multi-energy complementary system according to the optimization strategy and the real-time operating parameters of the multi-energy complementary system in the next rolling window.

[0015] Thirdly, the present invention provides a computer device, comprising: a memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the computer instructions to perform the above-described method for coordinated operation and control of a multi-energy complementary system of water, wind, solar and storage, or any of its corresponding embodiments. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a flowchart illustrating the coordinated operation and control method of a multi-energy complementary system based on water, wind, solar, and storage according to an embodiment of the present invention.

[0018] Figure 2 This is a structural block diagram of a multi-energy complementary system coordinated operation control device based on an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] According to an embodiment of the present invention, a method for coordinated operation and control of a multi-energy complementary system of water, wind, solar and energy storage is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0022] This embodiment provides a method for coordinated operation and control of a multi-energy complementary system of water, wind, solar, and storage. Figure 1 This is a flowchart of a multi-energy complementary system operation and control method based on an embodiment of the present invention, such as... Figure 1 As shown, the process includes the following steps:

[0023] Step S101: Obtain the output power of each power generation device in the multi-energy complementary system, the charging and discharging power of the energy storage device, and the vibration zone range of the hydropower unit in the multi-energy complementary system.

[0024] In one optional embodiment, the multi-energy complementary system includes various power generation devices and energy storage devices. The power generation devices include wind turbine generators, photovoltaic power generation devices, and hydroelectric generators. The actual output power of the wind turbine generators and photovoltaic power generation devices is affected by environmental factors such as wind speed and sunlight intensity, and their output power is difficult to control. Therefore, when the output power of the wind turbine generators and photovoltaic power generation devices fluctuates, it is necessary to regulate them through hydroelectric generators and energy storage devices.

[0025] In one optional embodiment, when the output power of the hydropower unit is within the vibration zone, the hydropower unit may suffer mechanical damage due to effects such as hydraulic vibration and cavitation, which may shorten the equipment life. Therefore, when using the hydropower unit to compensate for the fluctuations of the wind and solar power generation device, it is necessary to avoid the output power of the hydropower unit falling into the vibration zone as much as possible.

[0026] Step S102: Input the output power of each power generation device, the charging and discharging power of the energy storage device, and the vibration zone range of the hydropower unit into the pre-established optimization strategy model. Solve the optimization strategy model to obtain the optimization strategy of the multi-energy complementary system in the next rolling window. The optimization strategy includes the output power of the hydropower unit and the charging and discharging power of the energy storage device. The objective function of the optimization strategy model includes a vibration zone penalty term, which is used to characterize the loss value caused when the output power of the hydropower unit falls within the vibration zone range.

[0027] In one optional embodiment, the rolling window can be 5 to 15 minutes long, that is, the optimization strategy is updated every 5 to 15 minutes based on the operating status of each power generation device and energy storage device in the multi-energy complementary system, the load demand, and the interaction power between the multi-energy complementary system and the external power grid.

[0028] In one optional embodiment, the output power of the hydropower unit and the charging and discharging power of the energy storage device in the optimization strategy are used to compensate for the wind and solar power generation units. When the output power of the wind and solar power generation units cannot meet the load demand and the power interaction demand between the multi-energy complementary system and the external power grid, it is necessary to increase the output power of the hydropower unit or increase the discharge power of the energy storage device. When the output power of the wind and solar power generation units is greater than the load demand and the power interaction demand between the multi-energy complementary system and the external power grid, it is necessary to reduce the output power of the hydropower unit or increase the charging power of the energy storage device.

[0029] In an optional embodiment, since the output power of the hydropower unit will be subject to mechanical damage due to hydraulic vibration, cavitation and other effects when it falls within the vibration zone, thereby shortening the equipment life, the vibration zone penalty term can be the economic loss value caused by the shortened equipment life.

[0030] Step S103: Adjust the hydropower units and energy storage devices in the multi-energy complementary system according to the optimization strategy and the real-time operating parameters of the multi-energy complementary system in the next rolling window.

[0031] In one optional embodiment, when regulating the hydropower unit and energy storage device in the next rolling window, a reference command for each power generation unit and energy storage device in the next rolling window is first generated according to the optimization strategy. The reference command is used to regulate the power generation unit and energy storage device. Then, the operating parameters of each power generation unit and energy storage device are collected in real time, and the power generation unit and energy storage device are adaptively regulated according to the operating parameters.

[0032] In an optional embodiment, since the optimization strategy calculated in step S102 is a control strategy for a rolling window, and the optimization strategy is determined by combining the predicted output power of the wind and solar power generation device in the next rolling window, but due to the instability of the wind and solar power generation device, its actual output power may deviate from the predicted power. Therefore, after obtaining the optimization strategy, it is still necessary to monitor the real-time operating parameters of the multi-energy complementary system in real time, so as to adaptively control the hydropower unit and the energy storage device.

[0033] In one optional embodiment, when calculating the optimization strategy, it is necessary not only to combine the predicted output power of the wind and solar power generation devices in the next rolling window, but also to combine the load demand and the interaction power between the multi-energy complementary system and the external power grid to calculate the optimization strategy. The load demand and the interaction power between the multi-energy complementary system and the external power grid may also change within the rolling window. Therefore, when regulating the hydropower units and energy storage devices, it is also necessary to obtain the load demand and the interaction power between the multi-energy complementary system and the external power grid in real time.

[0034] The method provided in this invention introduces a vibration zone penalty term into the objective function when calculating the optimization strategy for compensating wind and solar power generation devices by hydropower units and energy storage devices in a multi-energy complementary system. This fully considers the damage caused to the hydropower units when they pass through the vibration zone, thereby enabling the hydropower units to actively avoid the vibration zone when solving the objective function, reducing the probability of hydropower falling into the dangerous range, reducing the mechanical losses caused by resonance, extending equipment life, and reducing maintenance costs.

[0035] In an optional embodiment, the objective function is established based on the sum of the hydropower generation cost, wind and solar power loss cost, energy storage state of charge deviation penalty, and vibration zone penalty, wherein the optimization strategy obtained by solving the optimization strategy model minimizes the value of the objective function.

[0036] In one specific embodiment, the objective function is:

[0037]

[0038] in, For the power generation cost of hydropower units, λ1·P curt For the cost of wind and solar power losses, λ2·||SOC t -SOC ref || represents the penalty term for the energy storage state of charge deviation. For the vibration zone penalty term, Q(P) h P is the output power of the hydroelectric generator unit. h Corresponding flow rate (m) 3 / s), λ0 is the water price coefficient (yuan / m³) 3 ), P curt Economic losses caused by wind and solar power generation restrictions, yuan / MWh, Φ(P) h ) is the vibration zone penalty term, for example, when P h When falling within the vibration zone, Φ(P) h If the value is maximized, it is 0 otherwise. (SOC) ref For the optimal state of charge of energy storage, λ1, λ2, and λ3 are the weighting coefficients for wind and solar loss costs, state of charge deviation penalties, and vibration zone penalties, respectively.

[0039] In an optional embodiment, the optimization strategy model further includes constraints:

[0040] Power balance constraint: P h +P PV +P WT +P ESS =P load ±P grid P h P is the output power of the hydroelectric generator unit. PV P represents the output power of photovoltaic power generation. WT P represents the output power of wind power generation. ESS P represents the charging and discharging power of the energy storage system. load P represents the actual load demand of the system. grid This refers to the interactive power of the external power grid.

[0041] Energy storage SOC constraint: SOC min ≤SOC≤SOC max Among them, SOC min The minimum value of the energy storage SOC, SOC max This represents the maximum value of the energy storage SOC.

[0042] Climbing speed constraint:

[0043] |P t -P t-1 |≤ΔP max

[0044] Hydropower unit: ΔP max =R hydro ·P rated ·Δt

[0045] Among them, P t Let P be the output power of the hydroelectric generator at time t. t-1 The output power of the hydropower unit at time t-1, ΔP max R is the maximum climbing rate of the hydroelectric generator unit. hydro P is the rated gradient rate coefficient of the hydropower unit. rated This refers to the rated power of the hydroelectric generator unit.

[0046] In an optional embodiment, a vibration zone constraint can also be added to the constraints: the hydropower unit power avoids the vibration zone: P h ≤P a or P h ≥P b , where P h P is the output power of the hydroelectric generator unit. a P is the lower limit of the vibration zone range. b This is the upper limit of the vibration zone range to prevent the power of the hydroelectric generator unit from crossing the vibration zone.

[0047] In one optional embodiment, the step of acquiring the operating parameters of each power generation device and energy storage device in real time within the next scrolling window, and adaptively controlling the power generation device and energy storage device based on the operating parameters specifically includes:

[0048] Step a1: Obtain the actual output power of the wind and solar power generation device.

[0049] The actual output power of a wind and solar power generation system refers to the sum of the actual output power of the wind turbine generator set and the actual output power of the photovoltaic power generation system.

[0050] If the actual output power of the wind and solar power generation device is less than the predicted output power, and the first deviation between the actual output power and the predicted output power is greater than the preset value, then steps a2 and a3 are executed.

[0051] In one alternative embodiment, the following steps are for rapid correction by hydropower units and energy storage devices when wind and solar power output drops sharply, and the preset value can be set to a large value.

[0052] Step a2: During the first time period, determine the discharge power of the energy storage device based on the maximum power of the energy storage device and the first deviation, and control the energy storage device to discharge according to the discharge power.

[0053] In one optional embodiment, when there is a large deviation between the actual output power and the predicted output power of the wind and solar power generation device, the hydropower unit and the energy storage device need to respond quickly. However, when the hydropower unit responds quickly, the risk of crossing the vibration zone is high. Therefore, the energy storage device can be controlled to respond quickly, and the energy storage device discharges according to the discharge power.

[0054] In one optional embodiment, when controlling the energy storage device to discharge, the maximum discharge power of the energy storage device is first determined. If the maximum discharge power is greater than the first deviation, the discharge is performed according to the first deviation. If the maximum discharge power is less than the first deviation, the discharge is performed according to the maximum discharge power.

[0055] In one alternative embodiment, the maximum discharge power of the energy storage device is determined based on the maximum state of charge of the energy storage device.

[0056] In one alternative embodiment, the first time period can be 0-10 seconds.

[0057] Step a3: During the second time period, adjust the output power of the hydropower unit according to the maximum climbing rate of the hydropower unit.

[0058] In one optional embodiment, the second time period can be 10 seconds to 5 minutes. In specific implementation, the end time can be determined according to the modification situation.

[0059] In an optional embodiment, after executing step a1, if it is determined that the actual output power of the wind and solar power generation device is less than the predicted output power, and the first deviation is less than or equal to a preset value, then steps a4-a8 are executed. That is, in this embodiment of the invention, when the actual output power of the wind and solar power generation device is less than the predicted output power, but has not yet reached the level of a sudden drop, steps a4-a8 are executed.

[0060] Step a4: Determine the adjustable range of the hydropower unit according to the vibration zone range of the hydropower unit.

[0061] Step a5: If the first deviation is within the adjustable range of the hydropower unit, adjust the output power of the hydropower unit according to the first deviation.

[0062] Step a6: If the first deviation is outside the adjustable range of the hydropower unit, adjust the hydropower unit according to the maximum output power of the hydropower unit.

[0063] Step a7: Determine the second deviation between the current power and the predicted output power based on the output power of the hydropower unit after regulation and the first deviation.

[0064] Step a8: Adjust the discharge power of the energy storage device according to the second deviation. That is, in this embodiment of the invention, if the hydropower unit cannot compensate for the deviation of the wind and solar power generation device, then after the hydropower unit is adjusted to its maximum adjustable power, it is still necessary to adjust it through the energy storage device.

[0065] In an optional embodiment, when performing step a8, the following steps are specifically performed:

[0066] Step a81: Calculate the maximum discharge power of the energy storage device based on the state-of-charge limit constraint of the energy storage device.

[0067] Step a82: If the maximum discharge power of the energy storage device is greater than or equal to the second deviation, the discharge power of the energy storage device is adjusted according to the second deviation.

[0068] Step a83: If the maximum discharge power of the energy storage device is less than the second deviation, adjust the energy storage device according to the maximum discharge power of the energy storage device.

[0069] In an optional embodiment, if the maximum discharge power of the energy storage device is less than the second deviation, after the energy storage device discharges, a third deviation between the current power and the predicted output power is determined based on the output power of the hydropower unit after regulation, the maximum discharge power of the energy storage device, and the first deviation, and the output power of the hydropower unit is regulated as it passes through the vibration zone.

[0070] In an optional embodiment, when hydropower must cross the vibration zone, short-term over-limit control is employed, and a vibration protection algorithm is triggered.

[0071] In one alternative embodiment, when compensating for deviations in wind and solar power generation devices, energy storage compensates for high-frequency fluctuations, and hydropower handles slow-varying components.

[0072] In one optional embodiment, when the actual output power of wind and solar power generation devices is excessive, if the energy storage device cannot absorb it and the hydropower unit drops to its minimum output, the curtailment strategy needs to be determined based on the curtailment cost of wind and solar power generation.

[0073] This embodiment also provides an apparatus for implementing the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0074] This embodiment provides a coordinated operation and control device for a multi-energy complementary system of water, wind, solar, and energy storage, such as... Figure 2 As shown, it includes:

[0075] The data acquisition device 201 is used to acquire the output power of each power generation device in the multi-energy complementary system, the charging and discharging power of the energy storage device, and the vibration zone range of the hydropower unit in the multi-energy complementary system.

[0076] The optimization strategy calculation module 202 is used to input the output power of each power generation device, the charging and discharging power of the energy storage device, and the vibration zone range of the hydropower unit into the pre-established optimization strategy model, solve the optimization strategy model to obtain the optimization strategy of the multi-energy complementary system in the next rolling window. The optimization strategy includes the output power of the hydropower unit and the charging and discharging power of the energy storage device. The objective function of the optimization strategy model includes a vibration zone penalty term, which is used to characterize the loss value caused when the output power of the hydropower unit falls into the vibration zone range.

[0077] The control module 203 is used to control the hydropower units and energy storage devices in the multi-energy complementary system according to the optimization strategy and the real-time operating parameters of the multi-energy complementary system in the next rolling window.

[0078] Further functional descriptions of the above modules and units are the same as those in the corresponding embodiments described above, and will not be repeated here.

[0079] In this embodiment, the coordinated operation and control device for the multi-energy complementary system of water, wind, solar and energy storage is presented in the form of a functional unit. Here, a unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that execute one or more software or fixed programs, and / or other devices that can provide the above functions.

[0080] This invention also provides a computer device having the above-described features. Figure 2 The device shown is a coordinated operation control device for a multi-energy complementary system of water, wind, solar, and storage.

[0081] Please see Figure 3 , Figure 3 This is a schematic diagram of the structure of a computer device provided in an optional embodiment of the present invention, such as... Figure 3As shown, the computer device includes one or more processors 10, memory 20, and interfaces for connecting the components, including high-speed interfaces and low-speed interfaces. The components communicate with each other via different buses and can be mounted on a common motherboard or otherwise installed as needed. The processors can process instructions executed within the computer device, including instructions stored in or on memory to display graphical information of a GUI on external input / output devices (such as display devices coupled to the interfaces). In some alternative implementations, multiple processors and / or multiple buses can be used with multiple memories and multiple memory modules, if desired. Similarly, multiple computer devices can be connected, each providing some of the necessary operations (e.g., as a server array, a group of blade servers, or a multiprocessor system). Figure 3 Take a processor 10 as an example.

[0082] Processor 10 may be a central processing unit, a network processor, or a combination thereof. Processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The programmable logic device may be a complex programmable logic device (CAMP), a field-programmable gate array (FPGA), a general-purpose array logic (GDA), or any combination thereof.

[0083] The memory 20 stores instructions executable by at least one processor 10 to cause at least one processor 10 to perform the method shown in the above embodiments.

[0084] The memory 20 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the computer device. Furthermore, the memory 20 may include high-speed random access memory and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some alternative embodiments, the memory 20 may optionally include memory remotely located relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0085] The memory 20 may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, hard disk or solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0086] The computer device also includes an input device 30 and an output device 40. The processor 10, memory 20, input device 30, and output device 40 can be connected via a bus or other means. Figure 3 Taking the example of a connection between China and Israel via a bus.

[0087] Input device 30 can receive input numerical or character information, and generate key signal inputs related to user settings and function control of the computer device, such as a touchscreen, keypad, mouse, trackpad, touchpad, joystick, one or more mouse buttons, trackball, joystick, etc. Output device 40 may include display devices, auxiliary lighting devices (e.g., LEDs), and haptic feedback devices (e.g., vibration motors). The aforementioned display devices include, but are not limited to, liquid crystal displays, light-emitting diodes, displays, and plasma displays. In some alternative embodiments, the display device may be a touchscreen.

[0088] This invention also provides a computer-readable storage medium. The methods described above according to embodiments of the invention can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor controllers, or programmable hardware include storage components capable of storing or receiving software or computer code, which, when accessed and executed by the computer, processor, or hardware, implements the methods shown in the above embodiments.

[0089] A portion of this invention can be applied as a computer program product, such as computer program instructions, which, when executed by a computer, can invoke or provide the methods and / or technical solutions according to the invention through the operation of the computer. Those skilled in the art will understand that the forms in which computer program instructions exist in a computer-readable medium include, but are not limited to, source files, executable files, installation package files, etc. Correspondingly, the ways in which computer program instructions are executed by a computer include, but are not limited to: the computer directly executing the instructions, or the computer compiling the instructions and then executing the corresponding compiled program, or the computer reading and executing the instructions, or the computer reading and installing the instructions and then executing the corresponding installed program. Here, the computer-readable medium can be any available computer-readable storage medium or communication medium accessible to a computer.

[0090] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A method for coordinated operation and control of a multi-energy complementary system of water, wind, solar, and storage, characterized in that, Applied to multi-energy complementary systems, the method includes: The output power of each power generation device in the multi-energy complementary system, the charging and discharging power of the energy storage device, and the vibration zone range of the hydropower unit in the multi-energy complementary system are obtained. The output power of each power generation unit, the charging and discharging power of the energy storage unit, and the vibration zone range of the hydropower unit are input into the pre-established optimization strategy model. The optimization strategy model is solved to obtain the optimization strategy of the multi-energy complementary system in the next rolling window. The optimization strategy includes the output power of the hydropower unit and the charging and discharging power of the energy storage unit. The objective function of the optimization strategy model includes a vibration zone penalty term, which is used to characterize the loss value caused when the output power of the hydropower unit falls into the vibration zone range. The hydropower units and energy storage devices in the multi-energy complementary system are regulated according to the optimization strategy and the real-time operating parameters of the multi-energy complementary system in the next rolling window.

2. The method according to claim 1, characterized in that, The objective function is established based on the sum of the hydropower generation cost, wind and solar power loss cost, energy storage state of charge deviation penalty, and vibration zone penalty. The optimization strategy obtained by solving the optimization strategy model minimizes the value of the objective function.

3. The method according to claim 1, characterized in that, Based on the optimization strategy and the real-time operating data of the multi-energy complementary system in the next rolling window, the hydropower units and energy storage devices in the multi-energy complementary system are regulated, including: The optimization strategy generates a reference instruction for each power generation device and energy storage device in the next rolling window, and the reference instruction is used to regulate the power generation device and energy storage device. In the next scrolling window, the operating parameters of each power generation device and energy storage device are collected in real time, and the power generation device and energy storage device are adaptively controlled according to the operating parameters.

4. The method according to claim 3, characterized in that, In the next scrolling window, the operating parameters of each power generation device and energy storage device are collected in real time, and adaptive control of the power generation device and energy storage device is performed based on the operating parameters, including: Obtain the actual output power of wind and solar power generation devices; If the actual output power of the wind and solar power generation device is less than the predicted output power, and the first deviation between the actual output power and the predicted output power is greater than a preset value, Within a first time period, the discharge power of the energy storage device is determined based on the maximum power of the energy storage device and the first deviation, and the energy storage device is controlled to discharge according to the discharge power. During the second time period, the output power of the hydropower unit is adjusted according to the maximum climbing rate of the hydropower unit.

5. The method according to claim 3, characterized in that, In the next scrolling window, the operating parameters of each power generation device and energy storage device are collected in real time, and adaptive control of the power generation device and energy storage device is performed based on the operating parameters, including: Obtain the actual output power of wind and solar power generation devices; If the actual output power of the wind and solar power generation device is less than the predicted output power, and the first deviation between the actual output power and the predicted output power is less than or equal to a preset value, The adjustable range of the hydropower unit is determined according to the vibration zone range of the hydropower unit. If the first deviation is within the adjustable range of the hydropower unit, the output power of the hydropower unit shall be adjusted according to the first deviation.

6. The method according to claim 5, characterized in that, If the first deviation is outside the adjustable range of the hydropower unit, the hydropower unit shall be adjusted according to the maximum output power of the hydropower unit; A second deviation between the current power and the predicted output power is determined based on the output power of the hydropower unit after regulation and the first deviation. The discharge power of the energy storage device is adjusted according to the second deviation.

7. The method according to claim 6, characterized in that, The step of adjusting the discharge power of the energy storage device according to the second deviation includes: Calculate the maximum discharge power of the energy storage device based on the state-of-charge limit constraint of the energy storage device; If the maximum discharge power of the energy storage device is greater than or equal to the second deviation, the discharge power of the energy storage device is adjusted according to the second deviation.

8. The method according to claim 7, characterized in that, If the maximum discharge power of the energy storage device is less than the second deviation, the energy storage device shall be regulated according to the maximum discharge power of the energy storage device. The third deviation between the current power and the predicted output power is determined based on the output power of the hydropower unit after regulation, the maximum discharge power of the energy storage device, and the first deviation. The output power of the hydroelectric generator is adjusted by controlling its movement through the vibration zone.

9. A coordinated operation and control device for a multi-energy complementary system of water, wind, solar, and energy storage, characterized in that, The device, applied to a multi-energy complementary system, includes: The data acquisition device is used to acquire the output power of each power generation device in the multi-energy complementary system, the charging and discharging power of the energy storage device, and the vibration zone range of the hydropower unit in the multi-energy complementary system. The optimization strategy calculation module is used to input the output power of each power generation device, the charging and discharging power of the energy storage device, and the vibration zone range of the hydropower unit into the pre-established optimization strategy model, and solve the optimization strategy model to obtain the optimization strategy of the multi-energy complementary system in the next rolling window. The optimization strategy includes the output power of the hydropower unit and the charging and discharging power of the energy storage device. The objective function of the optimization strategy model includes a vibration zone penalty term, which is used to characterize the loss value caused when the output power of the hydropower unit falls into the vibration zone range. The control module is used to control the hydropower units and energy storage devices in the multi-energy complementary system according to the optimization strategy and the real-time operating parameters of the multi-energy complementary system in the next rolling window.

10. A computer device, characterized in that, include: The system includes a memory and a processor, which are interconnected. The memory stores computer instructions, and the processor executes the computer instructions to perform the coordinated operation and control method for a multi-energy complementary system of water, wind, solar and storage as described in any one of claims 1 to 9.

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