A power plant power generation control method, device, equipment and readable storage medium

Abstract

The application discloses a power station power generation amount control method and device, electronic equipment and a readable storage medium, comprising: acquiring real-time unit power generation power of each generator unit in a target power station; judging whether the real-time unit power generation power exceeds a preset unit power generation power threshold; if the real-time unit power generation power exceeds the unit power generation power threshold, judging whether real-time power of a target collection line corresponding to an over-generation unit exceeding the unit power generation power threshold exceeds a preset collection line power threshold; if the real-time collection line power does not exceed the collection line power threshold, performing power rollback control on the over-generation unit; if the real-time collection line power exceeds the collection line power threshold, judging whether real-time power of a grid connection point of the target power station exceeds a preset grid connection point power threshold; and if the real-time power of the grid connection point does not exceed the grid connection point power threshold, performing power rollback control on an over-generation collection line exceeding the collection line power threshold. The above scheme can provide more refined over-generation control effect for the power station.

Description

Technical Field

[0001] This application relates to the field of power generation control, and in particular to a power plant power generation control method, device, electronic equipment, and computer-readable storage medium. Background Technology

[0002] Various regions are imposing increasingly stringent assessments on the active power of new energy power plants. The current control strategies for new energy are relatively crude and lack control logic for new energy power generation under abnormal conditions (communication interruption, uncontrolled units). This leads to problems such as power plants exceeding their power generation targets due to uncontrolled power, directly affecting the revenue loss of the power plants.

[0003] Current known technologies control the over-generation of renewable energy by monitoring the power of renewable energy grid connection points. When the grid connection point is detected to exceed the target value, the power can only be brought back to within the reasonable target value range through control measures. It cannot prevent the over-generation of power and lacks multi-level and multi-dimensional monitoring and control methods. Summary of the Invention

[0004] The purpose of this application is to provide a power plant power generation control method, device, electronic equipment, and computer-readable storage medium.

[0005] To achieve the above objectives, this application provides a power plant power generation control method in a first aspect. The method includes: acquiring the real-time unit power generation of each generator unit in the target power plant; determining whether the real-time unit power generation exceeds a preset unit power generation threshold; if the real-time unit power generation exceeds the unit power generation threshold, determining whether the real-time collector power of the target collector corresponding to the over-generating unit that exceeds the unit power generation threshold exceeds a preset collector power threshold; if the real-time collector power does not exceed the collector power threshold, performing power correction control on the over-generating unit; if the real-time collector power exceeds the collector power threshold, determining whether the real-time power at the grid connection point of the target power plant exceeds a preset grid connection point power threshold; if the real-time power at the grid connection point does not exceed the grid connection point power threshold, performing power correction control on the over-generating collector that exceeds the collector power threshold.

[0006] Optionally, the method may further include:

[0007] If the over-generating unit remains in an over-generating state after multiple power correction controls are applied, the inverter of the over-generating unit will be shut down.

[0008] Optionally, the second power callback control unit is further configured to:

[0009] It was determined that there were over-generation collectors exceeding the collector power threshold;

[0010] Determine the actual proportion of the number of generating units exceeding the power generation threshold under the over-generation collector line to the total number of generating units;

[0011] If the actual ratio exceeds the preset ratio threshold, the over-generated collector wire will be completely cut off.

[0012] Optionally, the method may further include:

[0013] The third power reversal control unit is configured to perform power reversal control on all over-generating units until the real-time collector power of the over-generating collector falls back to no more than the collector power threshold if the actual ratio does not exceed the preset ratio threshold.

[0014] Optionally, the method may further include:

[0015] The warning sending unit is configured to send a power plant over-generation warning via a preset path if the real-time power of the grid connection point exceeds the grid connection point power threshold. The preset path includes at least one of the following: interface pop-up, interface alarm, SMS, email, telephone, and audible and visual alarm.

[0016] Optionally, the power callback control method includes at least one of the following:

[0017] Adjust the unit speed, control voltage and reactive power, adjust the power factor, adjust the load, adjust the blade angle of the wind turbine, adjust the operating parameters of the solar photovoltaic inverter, and introduce an energy storage system.

[0018] Optionally, the method may further include:

[0019] If the over-generating collector line remains in an over-generating state after multiple power correction controls, the grid connection of the over-generating collector line will be disconnected and an alarm will be issued.

[0020] To achieve the above objectives, this application provides a power plant power generation control device in a second aspect. The device includes: a generator power acquisition unit configured to acquire the real-time generator power of each generator unit in a target power plant; a first judgment unit configured to determine whether the real-time generator power exceeds a preset generator power threshold; a second judgment unit configured to, if the real-time generator power exceeds the generator power threshold, determine whether the real-time collector power of the target collector corresponding to an over-generating generator exceeding the generator power threshold exceeds a preset collector power threshold; a first power callback control unit configured to, if the real-time collector power does not exceed the collector power threshold, perform power callback control on the over-generating generator; a third judgment unit configured to, if the real-time collector power exceeds the collector power threshold, determine whether the real-time power at the grid connection point of the target power plant exceeds a preset grid connection point power threshold; and a second power callback control unit configured to, if the real-time power at the grid connection point does not exceed the grid connection point power threshold, perform power callback control on the over-generating collector that exceeds the collector power threshold.

[0021] Optionally, the device may also include:

[0022] If the over-generating unit remains in an over-generating state after multiple power correction controls are applied, the inverter of the over-generating unit will be shut down.

[0023] Optionally, the second power callback control unit is further configured to:

[0024] It was determined that there were over-generation collectors exceeding the collector power threshold;

[0025] Determine the actual proportion of the number of generating units exceeding the power generation threshold under the over-generation collector line to the total number of generating units;

[0026] If the actual ratio exceeds the preset ratio threshold, the over-generated collector wire will be completely cut off.

[0027] Optionally, the device may also include:

[0028] The third power reversal control unit is configured to perform power reversal control on all over-generating units until the real-time collector power of the over-generating collector falls back to no more than the collector power threshold if the actual ratio does not exceed the preset ratio threshold.

[0029] Optionally, the device may also include:

[0030] The warning sending unit is configured to send a power plant over-generation warning via a preset path if the real-time power of the grid connection point exceeds the grid connection point power threshold. The preset path includes at least one of the following: interface pop-up, interface alarm, SMS, email, telephone, and audible and visual alarm.

[0031] Optionally, the power callback control method includes at least one of the following:

[0032] Adjust the unit speed, control voltage and reactive power, adjust the power factor, adjust the load, adjust the blade angle of the wind turbine, adjust the operating parameters of the solar photovoltaic inverter, and introduce an energy storage system.

[0033] Optionally, the device may also include:

[0034] If the over-generating collector line remains in an over-generating state after multiple power correction controls, the grid connection of the over-generating collector line will be disconnected and an alarm will be issued.

[0035] To achieve the above objectives, this application provides an electronic device in a third aspect, the electronic device comprising:

[0036] Memory, used to store computer programs;

[0037] A processor is configured to implement the steps of the power plant power generation control method as described in any of the embodiments of the first aspect above when executing a computer program stored in a memory.

[0038] To achieve the above objectives, this application provides a computer-readable storage medium in a fourth aspect, on which a computer program is stored, which, when executed by a processor, implements the steps of power plant power generation control as described in any of the embodiments of the first aspect above.

[0039] Compared to existing technologies, the power generation control scheme provided in this application sets corresponding power thresholds for detecting whether power over-generation occurs by following the order in which the power is transmitted through the power plant, from the lowest-level generator set, to the collector lines that control multiple generator sets, and then to the grid connection point that aggregates the power transmitted from multiple collector lines. It also provides corresponding anti-over-generation control strategies based on the over-generation phenomena occurring at different levels, thereby providing a more refined over-generation control effect.

[0040] This application also provides a power plant power generation control device, electronic equipment, and computer-readable storage medium, which have the aforementioned beneficial effects, and will not be elaborated further here. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0042] Figure 1A flowchart of a power plant power generation control method provided in this application embodiment;

[0043] Figure 2 A flowchart of a method for power callback control of an over-generating collector wire in a power plant power generation control method provided in an embodiment of this application;

[0044] Figure 3 This is a structural block diagram of a power plant power generation control device provided in an embodiment of this application. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] Please see Figure 1 , Figure 1 A flowchart for power plant power generation control provided in this application includes the following steps:

[0047] Step 101: Obtain the real-time generating power of each generator unit in the target power plant;

[0048] This step is designed to involve an entity suitable for implementing the power generation control method provided in this application (e.g., a local server or cloud server for data processing and analysis) monitoring and recording the current electrical power generated by each generator unit in a power plant or power plant.

[0049] A power plant is a facility containing multiple generator sets, each typically consisting of a single generator (such as a steam turbine, gas turbine, water turbine, generator set, or solar photovoltaic array) used to produce electricity. Each generator set can operate independently or work in conjunction with other units to meet grid demands. The real-time power output of a generator set refers to the electrical energy it is currently producing. This power is usually expressed in watts (W) or kilowatts (kW), and can also be expressed in megawatts (MW). Especially in large power plants, this value represents the current capacity of the plant and is a key parameter for grid operation. To obtain the real-time power output of the generator sets, power plants typically use various monitoring and measurement devices, which may include power meters, current sensors, voltage sensors, transformers, digital energy metering equipment, etc. These devices can measure current and voltage values ​​and calculate the real-time power output based on electrical formulas.

[0050] Step 102: Determine whether the real-time unit power generation exceeds the preset unit power generation threshold. If not, proceed to step 103; otherwise, proceed to step 104.

[0051] Based on step 101, this step aims to have the aforementioned executing entity determine whether the real-time power generation of each generator set exceeds its preset power generation threshold. That is, the preset power generation threshold varies depending on the generator set.

[0052] It should be noted that the power generation threshold set for each unit usually corresponds to the power generation allocated to that unit. That is, if the actual power generation exceeds the power generation threshold, it usually means that the unit is over-generating, and vice versa.

[0053] Step 103: Do not implement control measures;

[0054] This step is based on the premise that the judgment result in step 102 is that the real-time power generation of each generator set does not exceed the preset power generation threshold, so there is no need to perform any control actions on the power generation of the generator sets.

[0055] Step 104: Determine whether the real-time collector power of the target collector corresponding to the over-generating unit that exceeds the unit's power generation threshold exceeds the preset collector power threshold. If not, proceed to step 105; otherwise, proceed to step 106.

[0056] This step is based on the premise that the judgment result in step 102 is that there are over-generating units with actual generating power exceeding the preset unit generating power threshold. The purpose is for the aforementioned execution entity to further determine whether the real-time collector power of the target collector corresponding to the over-generating unit that exceeds the unit generating power threshold exceeds the preset collector power threshold, so as to clarify whether the upper-level collector side is also in an over-generating state.

[0057] Step 105; Perform power correction control on the over-generating units;

[0058] This step is based on the condition that the judgment result in step 104 is that there is an over-generating unit that exceeds the unit's power generation threshold, and the real-time power of the target collector line corresponding to it does not exceed the preset collector line power threshold. Since the actual power on the collector line side where the over-generating unit is located has not exceeded the collector line power threshold set for that collector line, it is only necessary to perform power callback control on the over-generating unit.

[0059] There are various methods for controlling the power generation of power generation equipment in a power plant. The specific choice depends on the type of power plant, the nature of the equipment, and the system requirements. Power rollback control methods include at least one of the following: reducing the unit speed, controlling voltage and reactive power, adjusting the power factor, adjusting the load, adjusting the blade angle of the wind turbine, adjusting the operating parameters of the solar photovoltaic inverter, and introducing an energy storage system. The following are some common methods:

[0060] 1) Generator speed governor: Controls the output power by adjusting the generator's speed. This can be achieved through a mechanical or electronic speed governor, ensuring the generator operates at its rated speed;

[0061] 2) Unit Controller: The unit control system is used to monitor and control the operation of the entire generator set. This can include the coordinated and synchronized control of multiple generators.

[0062] 3) Voltage and reactive power control: This involves influencing the generator's output power by adjusting the power station's voltage and / or reactive power. This is a common control method when maintaining grid stability is required.

[0063] 4) Power factor adjustment: Controlling the output of active power by adjusting the power factor. This is important for improving the system's power factor or meeting the power factor requirements of the power grid.

[0064] 5) Load regulation: Controlling the generator's output power by adjusting the load. This can be achieved by adjusting the load connected to the power station or by using the power station's energy storage system.

[0065] 6) Blade angle control of wind turbines: For wind power stations, the wind force on the rotor can be controlled by adjusting the blade angle of the wind turbine, thereby adjusting the power generation.

[0066] 7) Solar photovoltaic inverter control: In a solar power plant, the inverter can control the DC output of the solar photovoltaic array to adjust the power generation.

[0067] 8) Gas turbine governor: For gas turbine power plants, adjusting the speed of the gas turbine can directly affect the output power of the generator.

[0068] 9) Application of energy storage systems: Use energy storage systems (such as batteries) to store excess electricity so that it can be released when needed, thereby balancing the power generation of the system.

[0069] 10) Smart microgrid management: In a microgrid, a smart energy management system is used to coordinate the output of different energy sources to meet the grid demand, which may include the adjustment of power generation capacity.

[0070] The above methods are usually used in combination to ensure that the power plant can flexibly adjust its power generation to adapt to changes in grid demand, while maintaining system stability and efficiency.

[0071] Step 106: Determine whether the real-time power of the target power plant at the grid connection point exceeds the preset grid connection point power threshold. If not, proceed to step 107.

[0072] This step is based on the judgment result in step 104 that there is an over-generating unit whose real-time collector power of the target collector line exceeds the preset collector power threshold. The purpose is for the above-mentioned execution entity to further determine whether the real-time power of the grid connection point of the target power station exceeds the preset grid connection point power threshold, so as to clarify whether it is also in an over-generating state at the grid connection point of the upper layer.

[0073] Step 107: Perform power callback control on over-generating collectors that exceed the collector power threshold.

[0074] This step is based on the assumption that the real-time power of the grid connection point does not exceed the preset grid connection point power threshold, as determined in step 106. Therefore, it is only necessary to implement power reversal control for the over-generating collector lines that exceed the collector line power threshold. In addition to the power reversal control methods for generator sets mentioned above, the power reversal control methods for collector lines also include directly shutting down all generator sets under that collector line, or directly adjusting the entire system using the collector line as the management unit.

[0075] Compared to existing technologies, the power generation control method provided in this application sets corresponding power thresholds for detecting whether power over-generation occurs by following the order in which the power is transmitted through the power plant, from the lowest-level generator set, to the collector lines that control multiple generator sets, and then to the grid connection point that aggregates the power transmitted from multiple collector lines. It also provides corresponding anti-over-generation control strategies based on the over-generation phenomena occurring at different levels, thereby providing a more refined over-generation control effect.

[0076] To deepen the understanding of how to perform power correction control on the over-generated collector wire, this embodiment uses... Figure 2 A flowchart is provided for a method of power callback control of an over-generating collector wire, which specifically includes the following steps:

[0077] Step 201: Identify the existence of an over-generation collector that exceeds the collector power threshold;

[0078] This step aims to have the aforementioned implementing entity first identify collectors that exceed the collector power threshold as over-generating collectors.

[0079] Step 202: Determine the actual proportion of the number of generating units exceeding the power generation threshold under the over-generation collector line to the total number of generating units;

[0080] Based on step 401, this step aims to determine, by the aforementioned implementing entity, the actual proportion of the number of generating units exceeding the power generation threshold below the over-generating collector line to the total number of generating units. This actual proportion is mainly used to reflect the number of over-generating units and whether a small-scale adjustment or an overall adjustment is appropriate.

[0081] Step 203: Determine whether the actual ratio exceeds the preset ratio threshold. If yes, proceed to step 204; otherwise, proceed to step 205.

[0082] Step 204: Completely cut off the over-generated collector wire;

[0083] This step is based on the judgment result in step 203 that the actual ratio exceeds the preset ratio threshold. This indicates that at this time, many units under the over-generating collector line are in an over-generating state, and it is not suitable to perform power callback control for each over-generating unit separately. Therefore, this step is performed by the above-mentioned execution entity to disconnect the over-generating collector line as a whole, that is, to disconnect the electrical energy carried on the entire collector line.

[0084] Step 205: Perform power correction control on all over-generating units until the real-time collector power of the over-generating collector line drops back to no more than the collector power threshold.

[0085] This step is based on the condition that the actual ratio does not exceed the preset ratio threshold in the judgment result of step 203. This means that at this time, the number of units with a small number of over-generating collectors is in an over-generating state. It is suitable to perform power correction control on only a few over-generating units until the real-time collector power of the over-generating collector falls back to not exceed the collector power threshold.

[0086] This embodiment provides a specific power callback control method for over-generating collectors through steps 201-205, aiming to adopt the most appropriate processing method for different situations in order to improve the control effect.

[0087] Based on any of the above embodiments, if the over-generating unit is still in an over-generating state after multiple power correction controls, the inverter of the over-generating unit can be directly shut down; and if the real-time power at the grid connection point exceeds the grid connection point power threshold, a power plant over-generating warning can be sent through a preset path. The preset path can include at least one of the following: interface pop-up, interface alarm, SMS, email, telephone, and audible and visual alarm, so as to ensure that the warning is transmitted to the relevant management personnel as much as possible.

[0088] Furthermore, if the over-generating collector line remains in an over-generating state after multiple power correction controls, the grid connection of the over-generating collector line can be disconnected and an alarm can be triggered.

[0089] To enhance understanding of the overall solution, this application also provides a complete and specific implementation scheme through the following embodiments:

[0090] This embodiment mainly constructs an anti-over-generation algorithm model by comparing the power at the new energy generator terminal with the target value, the power at the collector line with the target value, and the power at the grid connection point with the target power in multiple dimensions. This anti-over-generation algorithm model includes the following two main logics:

[0091] Logic 1: When the generator terminal power exceeds the upper limit of the unit's target value by a certain parameter range, and the power of the collector line where the unit is located is within a reasonable range of the collector line's target value, the system will use control methods to perform power callback control on the over-generating unit. If the unit refuses to callback, the system will take measures to shut down the over-generating inverter.

[0092] Logic 2: When the generator power exceeds the upper limit of the unit's target value by a certain parameter range, and the active power of the collector line also exceeds the upper limit of the collector line's target value range, while the power at the grid connection point is still within the reasonable range of the target value, the system will perform power correction through control means. If the collector line is still in an over-generating state after multiple power corrections, the system will cut off the collector line power and provide an alarm prompt on the system interface.

[0093] Due to the complexity of the situation, it is impossible to list and elaborate on them all. Those skilled in the art should realize that there are many examples based on the basic method principles provided in this application and in combination with actual situations. Without sufficient creative effort, they should all be within the protection scope of this application.

[0094] Please see below. Figure 3 , Figure 3 This is a structural block diagram of a power plant power generation control device 300 provided in this application embodiment. This embodiment exists as a device embodiment corresponding to the above method embodiment. The power plant power generation control device 300 may include:

[0095] The generator power acquisition unit 301 is configured to acquire the real-time generator power of each generator unit in the target power plant.

[0096] The first judgment unit 302 is configured to judge whether the real-time unit power generation exceeds the preset unit power generation threshold.

[0097] The second judgment unit 303 is configured to determine whether the real-time collector power of the target collector line corresponding to the over-generating unit that exceeds the unit power generation threshold exceeds the preset collector power threshold if the real-time unit power generation exceeds the unit power generation threshold.

[0098] The first power callback control unit 304 is configured to perform power callback control on the over-generating unit if the real-time collector power does not exceed the collector power threshold.

[0099] The third judgment unit 305 is configured to determine whether the real-time power of the target power station at the grid connection point exceeds the preset grid connection point power threshold if the real-time power of the collector line exceeds the collector line power threshold.

[0100] The second power callback control unit 306 is configured to perform power callback control on over-generation collectors that exceed the collector power threshold if the real-time power at the grid connection point does not exceed the grid connection point power threshold.

[0101] In some embodiments of this application, the power plant power generation control device 300 may further include:

[0102] If the over-generating unit remains in an over-generating state after multiple power correction controls are applied, the inverter of the over-generating unit will be shut down.

[0103] In some embodiments of this application, the second power callback control unit 306 is further configured to:

[0104] It was determined that there were over-generation collectors exceeding the collector power threshold;

[0105] Determine the actual proportion of the number of generating units exceeding the power generation threshold under the over-generation collector line to the total number of generating units;

[0106] If the actual ratio exceeds the preset ratio threshold, the over-generated collector wire will be completely cut off.

[0107] In some embodiments of this application, the power plant power generation control device 300 may further include:

[0108] The third power reversal control unit is configured to perform power reversal control on all over-generating units until the real-time collector power of the over-generating collector falls back to no more than the collector power threshold if the actual ratio does not exceed the preset ratio threshold.

[0109] In some embodiments of this application, the power plant power generation control device 300 may further include:

[0110] The warning sending unit is configured to send a power plant over-generation warning via a preset path if the real-time power of the grid connection point exceeds the grid connection point power threshold. The preset path includes at least one of the following: interface pop-up, interface alarm, SMS, email, telephone, and audible and visual alarm.

[0111] In some embodiments of this application, the power callback control method includes at least one of the following:

[0112] Adjust the unit speed, control voltage and reactive power, adjust the power factor, adjust the load, adjust the blade angle of the wind turbine, adjust the operating parameters of the solar photovoltaic inverter, and introduce an energy storage system.

[0113] In some embodiments of this application, the power plant power generation control device 300 may further include:

[0114] If the over-generating collector line remains in an over-generating state after multiple power correction controls, the grid connection of the over-generating collector line will be disconnected and an alarm will be issued.

[0115] This embodiment exists as a device embodiment corresponding to the method embodiment described above. Compared to the prior art, the power plant power generation control device provided in this embodiment sets corresponding power thresholds for detecting whether power over-generation has occurred, according to the order in which the power plant transmits electrical energy, from the lowest-level generator set, to the collector lines that control multiple generator sets, and then to the grid connection point that aggregates the electrical energy transmitted from multiple collector lines. It also provides corresponding anti-over-generation control strategies based on the over-generation phenomena occurring at different levels, thereby providing a more refined over-generation control effect.

[0116] Based on the above embodiments, this application also provides an electronic device, which may include a memory and a processor. The memory stores a computer program, and when the processor calls the computer program in the memory, it can implement the steps provided in the above embodiments. Of course, the electronic device may also include various necessary network interfaces, a power supply, and other components.

[0117] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by an execution terminal or processor, can perform the steps provided in the above embodiments. The storage medium may include various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0118] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0119] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0120] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. For those skilled in the art, various improvements and modifications can be made to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

[0121] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

Claims

1. A method for controlling the power generation of a power plant, characterized in that, include: Obtain the real-time generating power of each generator unit in the target power plant; By following the sequence of power transmission in the power plant, from the lowest-level generator units, to the collector lines controlling multiple generator units, and finally to the grid connection point where power is transmitted from multiple collector lines, corresponding power thresholds are set for each layer to detect whether excessive power generation has occurred. Based on the excessive generation phenomena occurring at different levels, corresponding anti-over-generation control strategies are provided, including: Determine whether the real-time unit power generation exceeds a preset unit power generation threshold; If the real-time generating power of the unit exceeds the generating power threshold of the unit, it is determined whether the real-time collector power of the target collector corresponding to the over-generating unit that exceeds the generating power threshold of the unit exceeds the preset collector power threshold. If the real-time collector power does not exceed the collector power threshold, power callback control is performed on the over-generating unit; If the real-time collector line power exceeds the collector line power threshold, determine whether the real-time grid connection point power of the target power station exceeds the preset grid connection point power threshold. If the real-time power of the grid connection point does not exceed the power threshold of the grid connection point, then the power of the over-generating collectors that exceed the power threshold of the collectors will be subject to power callback control.

2. The method according to claim 1, characterized in that, Also includes: If the over-generating unit remains in an over-generating state after multiple consecutive power correction controls, the inverter of the over-generating unit will be shut down.

3. The method according to claim 1, characterized in that, The step of performing power correction control on over-generating collectors that exceed the collector power threshold includes: It was determined that there was an over-generation collector exceeding the collector power threshold; Determine the actual proportion of the number of generating units exceeding the power generation threshold below the over-generation collector line to the total number of generating units; If the actual ratio exceeds the preset ratio threshold, the over-generated collector wire is completely cut off.

4. The method according to claim 3, characterized in that, Also includes: If the actual ratio does not exceed the preset ratio threshold, power callback control is applied to all over-generating units until the real-time collector power of the over-generating collector line drops back to no more than the collector power threshold.

5. The method according to claim 1, characterized in that, Also includes: If the real-time power of the grid connection point exceeds the grid connection point power threshold, a power plant over-generation warning is sent through a preset path; wherein, the preset path includes at least one of the following: interface pop-up window, interface alarm, SMS, email, telephone, and audible and visual alarm.

6. The method according to claim 1, characterized in that, The power callback control method includes at least one of the following: Adjust the unit speed, control voltage and reactive power, adjust the power factor, adjust the load, adjust the blade angle of the wind turbine, adjust the operating parameters of the solar photovoltaic inverter, and introduce an energy storage system.

7. The method according to any one of claims 1-6, characterized in that, Also includes: If the over-generating collector line remains in an over-generating state after multiple consecutive power correction controls, the grid connection of the over-generating collector line will be disconnected and an alarm will be issued.

8. A power plant power generation control device, characterized in that, include: The generator power acquisition unit is configured to acquire the real-time generator power of each generator unit in the target power plant; By following the sequence of power transmission in the power plant, from the lowest-level generator units, to the collector lines controlling multiple generator units, and finally to the grid connection point where power is transmitted from multiple collector lines, corresponding power thresholds are set for each layer to detect whether excessive power generation has occurred. Based on the excessive generation phenomena occurring at different levels, corresponding anti-over-generation control strategies are provided, including: The first judgment unit is configured to judge whether the real-time unit power generation exceeds a preset unit power generation threshold. The second judgment unit is configured to determine whether the real-time collector power of the target collector corresponding to the over-generating unit that exceeds the unit power generation threshold exceeds the preset collector power threshold if the real-time unit power generation exceeds the unit power generation threshold. The first power callback control unit is configured to perform power callback control on the over-generating unit if the real-time collector power does not exceed the collector power threshold. The third judgment unit is configured to determine whether the real-time power of the target power station at the grid connection point exceeds the preset grid connection point power threshold if the real-time power of the collector line exceeds the collector line power threshold. The second power callback control unit is configured to perform power callback control on over-generating collectors that exceed the collector power threshold if the real-time power of the grid connection point does not exceed the grid connection point power threshold.

9. An electronic device, characterized in that, include: Memory, used for computer programs; A processor, configured to implement the steps of the power plant power generation control method as described in any one of claims 1 to 7 when executing a computer program stored in the memory.

10. A readable storage medium, characterized in that, The readable storage medium stores a computer program, which, when executed by a processor, can implement the steps of the power plant power generation control method as described in any one of claims 1 to 7.

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