Operation and maintenance device for a power generation plant, operation and maintenance system of centralized control for a power supply facility

Abstract

Centralized control operation and maintenance system for a power supply facility, characterized in that it comprises a multi-station control unit for obtaining information on the total power; wherein the multi-station control unit is electrically connected to a plurality of single-station control units; and wherein the single-station control units are electrically connected to a plurality of power generation plants of different energy types; and wherein the multi-station control unit is arranged to generate information about the individual station power for the individual station control unit based on the information about the total power and the number of individual stations of the individual station control unit; and wherein the single-station control unit is configured to control the plurality of power generation plants based on the information about the single-station power and the information about the production characteristics of the power generation plants.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of manufacturing power generation systems, in particular to an operation and maintenance method for a power generation plant, an operation and maintenance device for a power generation plant, an electronic device, a computer-readable storage medium and a centralized control operation and maintenance system for a power supply device. STATE OF THE ART

[0002] Current technology typically uses an independent one-to-one control method when performing power control at power generation plants of different energy types. The disadvantage of this approach is that a number of independent control systems are required for each energy type of power generation plants, resulting in high system complexity, high cost, and a lack of synergy between the systems, making it difficult to achieve optimal overall energy utilization efficiency. Furthermore, due to the large differences in the power generation characteristics of different energy types (e.g., the inconsistency of wind power, the intermittent nature of photovoltaics), independent control is difficult to cope with the rapid changes in the power grid, resulting in inefficient control. CONTENT OF THIS APPLICATION

[0003] In view of the above-mentioned problems, the present application provides a centralized operation and maintenance system or a centralized control operation and maintenance system for a power supply facility, which overcomes or at least partially solves the above-mentioned problems and comprises a multi-station control unit for obtaining information on the total power, wherein the multi-station control unit is electrically connected to a plurality of single-station control units; and wherein the single-station control units are electrically connected to a plurality of power generation plants of different energy types; and wherein the multi-station control unit serves or is intended to generate information about the individual station power for the individual station control unit based on the information about the total power and the number of individual stations of the individual station control unit; and wherein the single-station control unit is configured to control the plurality of power generation plants based on the information about the single-station power and the information about the production characteristics of the power generation plants.

[0004] Optionally, a first data switch is configured between the single-station control unit and the power generation plant; wherein the first data switch is configured to receive a power distribution command sent from the single-station control unit and forward the power distribution command to a power generation plant corresponding to the power distribution command.

[0005] Optionally, the centralized control operation and maintenance system for a power supply facility includes a static reactive power generator for the first data switch; wherein the first data switch is provided to record the operating data of the power generation plant; and wherein the static reactive power generator is configured to sense the grid parameters and output power based on the grid parameters, the power distribution commands, and the operating data.

[0006] Optionally, the power generation plant comprises a wind power plant, a photovoltaic power plant, a chemical energy storage power plant, a pumped storage power plant, a thermal power plant, and a hydropower plant; wherein the information on the production characteristics includes the priority order of energy storage of the wind power plant, the photovoltaic power plant, the chemical energy storage power plant, the pumped storage power plant, the thermal power plant, and the hydropower plant.

[0007] Optionally, the information on production characteristics also includes the target power generation capacity of the wind power plant and the photovoltaic power plant.

[0008] Optionally, the centralized control operation and maintenance system for a power supply facility comprises a power generation facility acquisition unit, wherein the first acquisition unit is configured to obtain the power generation information of the power generation facility.

[0009] Optionally, the centralized control operation and maintenance system for a power generation facility comprises a power prediction unit for the wind power plant and the photovoltaic power plant; the power prediction unit is configured to determine the target power generation power.

[0010] Optionally, the centralized control operation and maintenance system for a power supply facility includes an operation and maintenance data host, wherein the operation and maintenance data host is configured to generate the total power information through the target power generation power and the power generation information.

[0011] Optionally, a second data switch is configured between the operation and maintenance data host and the acquisition unit.

[0012] Optionally, the centralized control operation and maintenance system for a power supply device includes a filter unit for the second data switch.

[0013] Also disclosed is an operation and maintenance method for a power generation plant, wherein the method is provided for the multi-station control unit; wherein the multi-station control unit is electrically connected to a plurality of single-station control units; and wherein the single-station control units are electrically connected to a plurality of power generation plants of different energy types; and wherein the method comprises: Obtaining information about overall performance; Generating single-station power information for the single-station control unit based on the total power and number of single-station information of the single-station control unit; Sending the information on the individual station power to the individual station control unit; wherein the individual station control unit is configured to control the plurality of power generation plants based on the information on the individual station power and the information on the production characteristics of the power generation plants.

[0014] Also disclosed is an operation and maintenance method for a power generation plant, the method being provided for a station control unit corresponding to the multi-station control unit; wherein the multi-station control unit is electrically connected to a plurality of single-station control units; and wherein the single-station control units are electrically connected to a plurality of power generation plants of different energy types; and wherein the multi-station control unit is arranged to receive information about the total power, to generate information about the single-station power for the single-station control unit based on the information about the total power and the number of single stations of the single-station control unit, and to send the information about the single-station power to the single-station control unit; and wherein the method comprises: Obtaining information on individual station performance; Controlling the plurality of power generation plants based on the information of single station power and the information of power generation plant production characteristics.

[0015] The embodiments of the present invention also disclose an operation and maintenance apparatus for a power generation plant, the apparatus being provided for the multi-station control unit; wherein the multi-station control unit is electrically connected to a plurality of single-station control units; and wherein the single-station control units are electrically connected to a plurality of power generation plants of different energy types; and wherein the apparatus comprises: a module for obtaining information on the overall performance, which is intended to obtain the information on the overall performance; a single-station power information generation module configured to generate single-station power information for the single-station control unit based on the total power and number of single-station information of the single-station control unit; a single-station power information transmission module configured to transmit the single-station power information to the single-station control unit; and wherein the single-station control unit is configured to control the plurality of power generation plants based on the single-station power information and the information on the production characteristics of the power generation plants.

[0016] The embodiments of the present invention also disclose an operation and maintenance apparatus for a power generation plant, the apparatus being provided for a station control unit corresponding to the multi-station control unit; wherein the multi-station control unit is electrically connected to a plurality of single-station control units; and wherein the single-station control units are electrically connected to a plurality of power generation plants of different energy types; and wherein the multi-station control unit is arranged to receive information about the total power, to generate information about the single-station power for the single-station control unit based on the information about the total power and the number of single stations of the single-station control unit, and to send the information about the single-station power to the single-station control unit; and wherein the device comprises: a module for obtaining information on the individual station power, which is intended to obtain the information on the individual station power; a power generation plant control module designed to control the plurality of power generation plants based on the information on the individual station power and the information on the production characteristics of the power generation plants.

[0017] The embodiments of the present invention further provide an electronic device, comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory complete the communication with each other via the communication bus, and wherein the memory is provided for storing a computer program; and wherein the processor is provided to implement the operation and maintenance method for a power generation plant described in one of the above embodiments when the program stored in the memory is executed.

[0018] The embodiments of the present invention also disclose a computer-readable storage medium having instructions stored therein, which instructions, when executed on a computer, cause the computer to perform the operation and maintenance method described in the above embodiment.

[0019] The embodiment of the present application has the following advantages: In the implementation of the present application, the centralized control operation and maintenance system for a power supply facility includes a multi-station control unit; wherein the multi-station control unit is electrically connected to a plurality of single-station control units; and wherein the single-station control units are electrically connected to a plurality of power generation plants of different energy types to realize coordinated control of the power generation plants of different energy types, thereby improving the control efficiency of the power generation plants of different energy types. SHORT DESCRIPTION OF THE DRAWING Fig. 1 shows a schematic diagram of the structure of a centralized control operation and maintenance system for a power supply device provided by an embodiment of the present application; Fig. 2 shows a schematic diagram of the structure of another centralized control operation and maintenance system for a power supply device provided by an embodiment of the present application; Fig. 3 shows a flowchart of steps of an operation and maintenance method for a power generation plant; Fig. 4 shows a flowchart of steps of another operation and maintenance method for a power generation plant; Fig. 5 shows a structural block diagram of an operation and maintenance apparatus for a power generation plant provided by an embodiment of the present application; Fig. 6 shows a structural block diagram of another operation and maintenance apparatus for a power generation plant provided by an embodiment of the present application; Fig. 7 shows a block diagram of a hardware structure of an electronic device provided by an embodiment of the present application; Fig. 8 shows a schematic diagram of a computer-readable medium provided by an embodiment of the present application. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application are described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. It is obvious that the described embodiments are a part of the embodiments of the present application and not all embodiments. Starting from the embodiments in the present application, all other embodiments achieved by a person with ordinary skill in the art without creative work fall within the scope of the present application. The implementation of the technical solutions of the present application is explained in more detail below in conjunction with the accompanying drawings.

[0021] Referring to Fig. 1, shows Fig. 1 is a schematic diagram of the structure of a centralized control operation and maintenance system for a power supply device provided by an embodiment of the present application;

[0022] In practice, a single station may be an independent power generation or supply unit that does not refer to a single type of power generation facility, but rather to a geographically or logically relatively independent zone capable of integrally utilising multiple energy sources for power generation or energy storage.

[0023] A single station consists of the integration of multiple energy sources. For example, a single station may include power generation facilities for multiple energy sources such as wind power, photovoltaics, hydropower, pumped storage, electrochemical energy storage, thermal power, etc. This integration of multiple energy sources contributes to improving energy efficiency and grid stability.

[0024] The individual station can be geographically or logically independent. The individual station can be a geographically centralized power generation zone, e.g., a zone with wind farms, photovoltaic systems, and energy storage facilities.

[0025] It can also be a logical unit that connects a wide range of scattered power generation plants via an intelligent control system for unified management and planning.

[0026] As an independent power generation and supply unit, the single station can flexibly regulate power output according to grid demand and its own energy characteristics.

[0027] For example, a single station can improve the overall efficiency of energy use by taking advantage of different energy sources, such as the complementarity of wind power and photovoltaics.

[0028] Another example is that energy storage devices and pumped storage plants can compensate for fluctuations in the power grid and improve grid stability.

[0029] Centralized control management for a large number of individual stations is conducive to the unified management and control of distributed energy sources, and through the intelligent control and coordination of a large number of individual stations, the advantages of different energy sources complement each other, thereby improving energy utilization efficiency and grid stability.

[0030] The centralized control operation and maintenance system for a power supply device in the embodiment of the present application comprises: at least one multi-station control unit 101 and a plurality of single-station control units 102; wherein the multi-station control unit 101 may be electrically connected to the plurality of single-station control units 102, respectively, to achieve a function that the multi-station control unit 101 sends the data to the plurality of single-station control units 102 simultaneously; and wherein the single-station control units 102 can each be electrically connected to a plurality of power generation plants 103 of different energy types.

[0031] In the specific implementation, the multi-station control unit is the central control unit of the centralized control operation and maintenance system for a power facility and is responsible for coordinating and managing the operation of a plurality of individual stations.

[0032] The main function of the multi-station control unit is to obtain total power information and generate power distribution information for each single station (single-station power information) based on the total power demand and the number of connected single stations.

[0033] Each single-station control unit is responsible for managing the power generation facilities in a specific zone, meaning that one single-station control unit can be used to control a variety of power generation facilities of different energy types in a single station.

[0034] Each single-station control unit receives the information on the single-station power output from the multi-station control unit and controls the operation of the individual power generation units based on this information and the information on the production characteristics of the power generation units.

[0035] In practice, each type of energy generation system has its own operating mode and performance characteristics. For example, the power generation capacity of wind turbines is influenced by wind speed and is volatile; the power generation capacity of photovoltaic systems is influenced by light intensity and is intermittent.

[0036] Power generation facilities of different energy types may have different production characteristics, and the information on production characteristics includes various factors affecting the power generation capacity of power generation facilities, including but not limited to the rated power, environmental dependence, operating status, energy storage priority order of different facilities, target power generation capacity, volatility, and interruption of facilities.

[0037] The rated power is the maximum power generation capacity that a power generation plant can produce under ideal conditions. Examples include the rated power of wind turbines and photovoltaic systems.

[0038] Environmental dependence refers to the varying degrees of dependence of electricity generation plants of different energy types on environmental conditions. For example: Wind turbine: wind speed, wind direction. Photovoltaic system: light intensity, sunshine duration. Hydropower plant: water flow, water level.

[0039] Operating characteristics include the start-up time, response speed, and power control range of power generation plants. These characteristics affect the stability and controllability of the plants in the power grid.

[0040] The priority order of energy storage is the order in which different energy types are stored in a single station with energy storage devices. During periods of electricity surpluses, priority is given to energy sources that are underutilized or have unstable power generation, such as wind power and photovoltaics. During periods of electricity shortages, energy is withdrawn from the corresponding storage devices.

[0041] Volatility and intermittency of investments: The volatility and intermittency of electricity generation capacity from renewable energy sources such as wind power and photovoltaics is due to the uncontrollable nature of natural resources.

[0042] Power generation plants of different energy types may include, but are not limited to, wind power plants, photovoltaic power plants, chemical energy storage power plants, pumped storage power plants, thermal power plants, and hydropower plants, and they are connected to and controlled by the single-station control unit.

[0043] For example, it is assumed that a zone contains a large number of individual stations, each of which integrates power generation plants from a variety of energy sources such as wind power, photovoltaics, hydropower, energy storage, etc. The grid control center issues a command to increase power generation capacity by 500 megawatts (MW) in the zone over the next hour to meet peak demand.

[0044] The multi-station control unit receives the command to increase the power by 500 MW from the grid control center.

[0045] According to the station group algorithm, the multi-station control unit calculates the power generation increment that each individual station should adopt, taking into account factors such as the power generation capacity and energy storage state of each individual station and the grid stability.

[0046] Assuming that there are five single stations in the region, the multi-station control unit can be assigned as follows: Single station 1: 120 MW; Single station 2: 100 MW; Single station 3: 90 MW; Single station 4: 110 MW; Single station 5: 80 MW;

[0047] After each single-station control unit receives the assigned power increment, it makes further power allocations based on the production characteristics and energy storage priorities of each energy device within the station.

[0048] Using the example of Single Station 1 (which has been assigned an increment of 120 MW), the Single Station Control Unit can make the following assignments: Wind power: an increase of 60 MW; Photovoltaics: an increase of 30MW; Hydropower: an increase of 20MW; Energy storage: release of 10MW;

[0049] The single-station control unit sends the power allocation commands to the corresponding power generation facilities, e.g. wind turbines, photovoltaic inverters, hydro turbines and energy storage converters.

[0050] The power generation plant adjusts its operating state according to the instruction to increase power generation capacity or release energy storage.

[0051] The embodiment of the present application uses a multi-station control unit connected to a plurality of single-station control units and adopts a hierarchical control structure with the single-station control units and a plurality of power generation plants, and the advantages are as follows: 1. Improve the overall control efficiency and response speed of the system: 1.1 hierarchical management to reduce the load on the main control system: The multi-station control unit is responsible for power distribution and coordination at the macro level, while the single-station control unit is responsible for controlling and optimizing devices at the micro level. This hierarchical management reduces the computing and processing load of the multi-station control unit, allowing it to respond more quickly to grid demand. 1.2 distributed processing to reduce communication delays: The single-station control unit directly manages the local power generation facilities, reducing the distance and delay of data transmission and increasing the speed of control command execution. 2. improved system flexibility and expandability: 2.1 Modular design, easy to expand: The modular design of the single-station control unit makes the system easily expandable, and the number of individual stations can be increased or reduced as required without having to reconfigure the entire system on a large scale. 2.2. Adaptation to stations of different sizes and types: This hierarchical control structure can be flexibly adapted to power plants of different sizes and types, and both large integrated power bases and small distributed power generation units can be managed by the corresponding single-station control unit. 3. Improve system stability and reliability: 3.1. Decentralized control to reduce the risk of single-point failures: Even if a single-station control unit fails, it will not affect the normal operation of other single stations, thereby improving the overall stability and reliability of the system. 3.2. Local control to improve anti-interference capability: The single-station control unit has a certain degree of local control capability, even in the event of communication interruption with the multi-station control unit, the basic operation can also be maintained, thereby improving the anti-interference capability of the system. 4. Optimize energy use and grid planning: 4.1. Global optimization and local refinement: The multi-station control unit performs global optimization to achieve overall power balance and optimal scheduling of the power grid, while the single-station control unit performs local refinement control to fully utilize the advantages of different energy sources. 4.2 Adaptation to the properties of the different energy sources: The single-station control unit can better adjust the power generation characteristics of different power sources, so that the power equipment functions better.

[0052] The hierarchical control structure achieves efficient, flexible, stable and reliable management and control of large, complex energy supply systems through sensible task allocation and cooperative work.

[0053] In summary, when implementing the present application, the centralized control operation and maintenance system for a power facility includes a multi-station control unit; the multi-station control unit is electrically connected to a plurality of single-station control units; and the single-station control units are electrically connected to a plurality of power generation facilities of different energy types to realize coordinated control of the power generation facilities of different energy types, thereby improving the control efficiency of the power generation facilities of different energy types. The use of the hierarchical control structure contributes to achieving efficient, flexible, stable, and reliable management and control of large, complex power facilities through reasonable task allocation and cooperative work.

[0054] Based on the above embodiment, a variant embodiment of the above embodiment is proposed, and it should be noted that in the variant embodiment, only differences from the above embodiment are described in order to keep the description concise and concise.

[0055] Referring to Fig. 2, shows Fig. 2 is a schematic diagram of the structure of another centralized control operation and maintenance system for a power supply device provided by an embodiment of the present application; wherein the centralized control operation and maintenance system for a power supply device 200 comprises: at least one multi-station control unit 201 and a plurality of single-station control units 202; wherein the multi-station control unit 201 may be electrically connected to the plurality of single-station control units 202, respectively, to achieve a function that the multi-station control unit 201 sends the data to the plurality of single-station control units 202 simultaneously; and wherein the single-station control units 202 can each be electrically connected to a plurality of power generation plants 203 of different energy types; and wherein a first data switch 204 is configured between the single-station control unit 202 and the power generation plant 203.

[0056] The centralized control operation and maintenance system for a power supply facility 200 includes a static reactive power generator 205 for the first data switch 204.

[0057] Power generation plant 203 includes a wind power plant, a photovoltaic power plant, a chemical energy storage power plant, a pumped storage power plant, a thermal power plant and a hydroelectric power plant.

[0058] The centralized control operation and maintenance system for a power supply facility 200 includes a power generation facility acquisition unit 206.

[0059] The centralized control operation and maintenance system for a power supply facility 200 includes a power prediction unit for the wind power plant and the photovoltaic power plant,

[0060] The centralized control operation and maintenance system for a power supply facility 200 includes an operation and maintenance data host 208 for the acquisition unit 206 and the power prediction unit 207.

[0061] A second data switch 209 is configured between the operation and maintenance data host 208 and the acquisition unit 206.

[0062] A filter unit 210 is configured between the acquisition unit 206 and the second data switch 209.

[0063] The centralized control operation and maintenance system for a power supply facility 200 includes a power generation facility protection unit 211.

[0064] Optionally, a first data switch is configured between the single-station control unit and the power generation plant; wherein the first data switch is configured to receive a power distribution command sent from the single-station control unit and forward the power distribution command to a power generation plant corresponding to the power distribution command. I. Functions of the first data switch: 1. Data routing and forwarding: The main function of the first data switch is to receive a power distribution command sent from the single-station control unit and forward the power distribution command to a power generation facility corresponding to the power distribution command, e.g., according to the type of target facility (wind power, photovoltaic, hydropower, energy storage, thermal power) corresponding to the power distribution command, accurately forward the power distribution command to the corresponding target power generation facility. 2. Centralization and distribution of data: It acts as a data concentration point, receiving control commands from the single-station control unit and forwarding these commands to the various power generation plants connected to it. II. Purpose of the arrangement of the first data switch: 1. Simplify the control architecture: By introducing the first data switch, the connection between the single-station control unit and the various power generation units can be simplified, thus avoiding complex point-to-point connections and reducing system complexity. 2. Improve data transmission efficiency: The data switch can transmit data at high speed, improve the transmission efficiency of control commands, and ensure that the power generation plants can respond to the control commands in a timely manner. 3. Improve the extensibility of the system: When a single station needs to increase or reduce the number of power generation units, it only needs to adjust the configuration of the data switch without changing the control logic of the single station control unit, which improves the expandability of the system. 4. Standardizing data interfaces: The data switch enables the data interfaces for power generation plants of different energy types to be standardized, which facilitates the control of different plants by the control unit. III. Advantages of the configuration: 1. Real-time control and coordination: The high-speed data transmission capability of the first data switch ensures that the single-station control unit can control and coordinate the operation of a variety of power generation units in real time to achieve rapid power regulation and response. 2. Optimize power distribution: through the first data switch, the single-station control unit can accurately send power distribution commands to each power generation unit, thereby achieving fine power control and optimizing energy utilization efficiency. 3. Improve system reliability: the data switch has data buffering and error detection functions, which can improve the reliability of data transmission, reduce the possibility of loss or error of control commands, and improve the stability of the system. 4. Facilitate fault diagnosis and maintenance: the first data switch can record data transmission logs to facilitate fault diagnosis and maintenance, thereby improving the maintainability of the system. 5. Increase the intelligence level of the entire power plant: through the data switch, it is possible to transmit the operating data and control data of each device in the power plant through the data switch, so as to lay the database for more intelligent operation of the power plant.

[0065] The first data switch of the embodiment of the present application plays an important role in the centralized control operation and maintenance system for a power facility, realizing precise control and coordination of various power generation facilities by a single-station control unit through efficient data routing and forwarding, thereby improving the control efficiency, reliability, and expandability of the system.

[0066] Optionally, the centralized control operation and maintenance system for a power supply facility includes a static reactive power generator for the first data switch; wherein the first data switch is provided to record the operating data of the power generation plant; and wherein the static reactive power generator is configured to sense the grid parameters and output power based on the grid parameters, the power distribution commands, and the operating data. I. Function of the static reactive power generator SVG: The static reactive power generator SVG is a power electronic device for the dynamic compensation of reactive power in the power grid.

[0067] It compensates for the inductive or capacitive reactive power in the power grid by quickly adjusting its own output current, thus stabilizing the grid voltage, increasing the power factor and improving power quality.

[0068] Compared to conventional reactive power compensation devices (such as capacitors and reactors), the SVG offers the advantages of high response speed, wide adjustment range and good accuracy. II. Purpose of the arrangement of the static reactive power generator SVG: 1. Stabilizing the grid voltage: When wind power, photovoltaics, and other fluctuating power sources are connected, the grid voltage is susceptible to fluctuations. The SVG can quickly respond to voltage changes, supply the required reactive power, and stabilize the grid voltage. 2. Increasing the power factor: Increasing the power factor can reduce grid losses and improve power transmission efficiency. The SVG can dynamically compensate for reactive power and bring the grid's power factor close to 1. 3. Improve power quality: The SVG can prevent voltage flicker and harmonics in the power grid, improve power quality and ensure the normal operation of power-consuming devices. 4. Improving the stability of the power plant in cooperation with the first data switch: The improvement of the stability of the power plant by the static reactive power generator (SVG) in cooperation with the first data switch is mainly reflected in the fact that they act together on the voltage and reactive power control in the power plant in order to achieve finer and faster regulation.

[0069] In detail: 4.1 The independent function of the SVG: The SVG itself is a power electronic device that can quickly regulate its own output current and dynamically compensate for reactive power in the power grid. This contributes to stabilizing the grid voltage, increasing the power factor, and improving power quality, especially when connected to fluctuating power sources such as wind power and photovoltaics. 4.2 Data transmission capacity of the first data switch: The first data switch plays the role of data routing and forwarding between the single-station control unit and various power generation facilities. It is capable of transmitting power distribution commands at high speed to ensure that the control commands reach the various power generation facilities in a timely and accurate manner. 4.3 Cooperation to improve stability: 4.3.1 Real-time control and coordination: The high-speed data transmission capability of the first data switch ensures that the single-station control unit can control and coordinate the operation of a plurality of power generation units in real time to achieve rapid power regulation and response. 4.3.2 Fine control of voltage and reactive power: the SVG determines its output current based on the network parameters (e.g. voltage fluctuations, reactive power demand, etc.) that it monitors itself, as well as the power distribution commands forwarded by the first data switch, the single-station control unit, or the operating data of the power generation plants concerned.

[0070] The data used to determine the output voltage of the static reactive power generator is commonly referred to as grid operating condition parameters or power quality data, including but not limited to: Voltage data: real-time voltage amplitude, voltage fluctuation, etc., which form the basis for controlling voltage stabilization by SVG. Current data: Real-time current amplitude, phase, etc. used to calculate reactive power. Reactive power data: Real-time reactive power demand or surplus in the power grid. Frequency data: although SVG mainly targets reactive power and voltage, frequency is also an important grid parameter. Power factor: the real-time power factor of the power grid.

[0071] This data forms the basis for the SVG's functions such as "dynamic reactive power compensation in the power grid" and "grid voltage stabilization." The role of the first data switch is to ensure that the single-station control unit can "control and coordinate the operation of various power generation units in real time." In this process, it can transmit information related to the overall operating status of the power plant (including voltage, reactive power, etc.) or direct control commands to the SVG, allowing it to cooperate more effectively to improve the stability of the power plant. 4.3.3 Rapid response to grid changes: Combined with the high-efficiency data transmission of the first data switch, the SVG can more quickly adjust reactive power output according to the real-time situation in the power plant, quickly suppressing voltage fluctuations and maintaining stable power grid operation within the power plant. This collaboration makes the power plant more adaptable and resilient to changes in the external power grid and internal power generation fluctuations. 4.3.4 Increasing the level of power plant intelligence: By using SVG in conjunction with the transmission through the data switch, the power plant can be made more intelligent in voltage and reactive power control, thereby increasing the level of intelligence of the entire power plant. Example scenario:

[0072] It is assumed to comprise a single station with wind turbines, photovoltaics, and energy storage systems. At a certain point in time, the wind farm's output drops sharply due to a sudden drop in wind speed, while PV generation also decreases due to cloud cover. This causes the voltage within the power plant to begin to drop, creating a large inductive reactive power demand, which lowers the power factor of the power plant and jeopardizes the operation of the power grid. S1. The process of cooperation between SVG and the first data switch: Data acquisition and monitoring: First, the acquisition unit in the power plant monitors the operating status of the power generation equipment (including wind turbines and PV inverters, etc.) in real time, e.g., output voltage, current, active and reactive power, and other data. This data is transmitted via the network within the power plant to the first data switch, possibly after noise removal by the filter unit. S2. Data routing and forwarding of the first data switch: The main function of the first data switch is to receive power distribution commands from the single-station control unit and forward them to the corresponding power generation facilities. At the same time, it also serves as a data concentration point for receiving power grid operation data from various devices (including data monitored by the SVG itself). S3. SVG response and reactive power compensation: The SVG continuously monitors the voltage and reactive power status within the power plant. If a voltage drop and a reactive power deficiency are detected, the SVG reacts quickly. The SVG dynamically adjusts its output current to these grid operating parameters (e.g., if the detected voltage is below the set value or there is an excessive reactive power demand). It immediately supplies capacitive reactive power to compensate for the inductive reactive power deficit in the grid. S4. Improving power plant stability: The rapid release of capacitive reactive power from the SVG can quickly raise the voltage level in the power plant and bring it back to normal.

[0073] At the same time, reactive power compensation improves the power factor, which reduces grid losses and improves power quality.

[0074] Through this collaboration, the power plant can quickly respond to voltage and reactive power problems caused by fluctuations in wind and photovoltaic power, avoiding the risk of grid collapse or equipment tripping, thereby improving the stability of the entire power plant.

[0075] In summary, the static reactive power generator, through its own reactive power compensation capability, combined with the highly efficient data transmission and routing function of the first data switch, enables the power plant to perform voltage and reactive power control in real time and with greater accuracy, thereby significantly improving the operational stability and power quality of the entire power plant. III. Advantages of the configuration: 1. Improving the dynamic stability of the power grid: The fast response capability of SVG enables voltage fluctuations and flicker in the power grid to be effectively suppressed and the dynamic stability of the power grid to be improved. 2. Improving the adaptability of the power grid: The SVG can adapt to different grid operating conditions, provide the required reactive power and improve the adaptability of the power grid. 3. Reduce grid losses: By increasing the power factor, the SVG can reduce the reactive power flow in the power grid and reduce grid losses. 4. Increasing the intelligence level of the power plant: By using SVG, the power plant can be made more intelligent in voltage and reactive power control, thereby increasing the intelligence level of the entire power plant.

[0076] In the embodiment of the present application, in the centralized control operation and maintenance system for a power plant, SVG is configured in the first data switch to improve the voltage stability, power factor, and power quality of the power grid, enhance the adaptability of the power grid, and increase the intelligence level of the power plant.

[0077] Optionally, the centralized control operation and maintenance system for a power supply facility comprises a power generation facility acquisition unit, wherein the first acquisition unit is configured to obtain the power generation information of the power generation facility. I. Function of the recording unit: The recording unit is a data acquisition device for real-time monitoring and recording of the operating status and performance parameters of the power generation plant. It can detect various types of signals, including voltage, current, power, temperature, pressure, vibration, etc.

[0078] The acquisition unit usually has high-speed and high-accuracy data acquisition capability, which can meet the requirements of real-time monitoring and control of the power system. II. Purpose of the arrangement of the recording unit: 1. Real-time monitoring of the operating status of power generation plants: By collecting operating data from the power generation plant in real time, it is able to know the operating status of the plant in a timely manner and detect potential errors and hidden dangers. 2. Providing the data required for control and optimization: The data collected by the acquisition unit forms the basis for controlling and optimizing the power system. The control system requires this data to adjust the operating parameters of the power generation plants, thereby achieving power balance and grid stability. 3. Support fault diagnosis and predictive maintenance: The historical data collected by the acquisition unit can be used for fault diagnosis and predictive maintenance. By analyzing this data, the remaining service life of the asset can be predicted, and maintenance work can be performed in advance to reduce downtime. 4. Providing data to the Operations and Maintenance Data Host: The data collected by the acquisition unit is transmitted to the operation and maintenance data host via the filter unit to provide the operation and maintenance data host with a database. III. Advantages of the configuration: 1. Improving the security of the power system: By monitoring the operating status of power generation plants in real time, anomalies can be detected and treated in a timely manner to prevent damage to the plants and power accidents. 2. Improving the reliability of the power system: Predictive maintenance can reduce the failure rate of equipment and improve the reliability of the power system. 3. Improving the economic efficiency of the power system: By optimizing the operating parameters of power generation plants, the efficiency of energy use can be improved, thereby reducing operating costs. 4. Increasing the intelligence level of the entire power plant: The data collected by the acquisition unit is the database for the intelligence of the power plant, and the configuration of the acquisition unit increases the intelligence level of the entire power plant.

[0079] In the centralized control operation and maintenance system for a power supply facility in the embodiment of the present application, the acquisition unit is an indispensable component for real-time monitoring, control, and optimization of power generation facilities. It provides important data support for the safe, reliable, and economical operation of the power system.

[0080] Optionally, the centralized control operation and maintenance system for a power generation facility comprises a power prediction unit for the wind power plant and the photovoltaic power plant; the power prediction unit is configured to determine the target power generation power. I. Function of the performance prediction unit: The power prediction unit is an intelligent system for predicting the future power generation capacity of a wind power plant and a photovoltaic power plant using meteorological forecast data and historical operating data. It typically uses advanced algorithms and models such as machine learning and deep learning to analyze meteorological factors such as wind speed, light intensity, temperature, etc. and combine them with historical power generation data, thereby predicting power generation output in a future period. Example scenario: Forecast of electricity generation in the next 24 hours for a single station of integrated energy sources: Assume a single station of integrated energy sources, including a wind farm and a photovoltaic power plant. It is necessary to forecast the power generation capacity of this station over the next 24 hours (at hourly intervals) for grid planning and optimized power distribution. 1. Data preparation:

[0081] To train the performance prediction model, the following data must be collected: 1.1 Historical operating data: Wind farms: hourly wind speed, wind direction, ambient temperature, and corresponding data on actual power generation capacity over the past few years. Photovoltaic power plant: hourly light intensity (irradiance), ambient temperature, humidity, and the corresponding data on the actual power generation capacity of the last few years.

[0082] The data on the actual power generation capacity can be collected by the acquisition unit in the power plant and stored in the operation and maintenance data host.

[0083] Meteorological forecast data: the meteorological forecast data for the next 24 hours (or a longer period) are obtained from a professional weather service provider, including: Wind power: Wind speed, wind direction, and temperature forecast for each hour of the next 24 hours. Photovoltaics: Forecast of light intensity (irradiance), temperature and humidity for each hour of the next 24 hours. 2. Training the model (example: machine learning): The power prediction unit can use this historical data to train the prediction model for the target power generation output. Here are two common machine learning models as examples: 2.1 Training of the wind power prediction model: Model type: time series-based machine learning models such as long-term and short-term memory network (LSTM), gated recurrent unit (GRU) or more traditional regression models such as random forest, gradient boosting tree can be selected. Training data: historical wind speed, wind direction and temperature are used as input features (X), and the corresponding actual wind power generation power is used as output features (Y). Training process: Data cleaning and preprocessing: Removing outliers and missing values ​​from the training data and performing data normalization (e.g., min-max scaling or z-score normalization) to ensure data quality.

[0084] Feature engineering: from the raw data of wind speed and direction, further useful features can be derived according to the turbine characteristics, e.g. the wind speed cube (related to the wind power curve).

[0085] Dataset division: The historical data is divided into a training set (for model learning), a validation set (for tuning the model hyperparameters), and a test set (for evaluating model performance). For example: 80% training set, 10% validation set, 10% test set.

[0086] Model selection and training: A suitable model architecture is selected, e.g., a multilayer LSTM network is constructed. Training data is fed into the model, and the model's weights and biases are continuously adjusted using backpropagation algorithms and optimizers (e.g., Adam) to minimize the error between predicted and actual performance (e.g., mean square error, MSE).

[0087] Hyperparameter tuning: The hyperparameters such as learning rate, number of hidden layer nodes, batch size, etc. of the model are tuned on the validation set to achieve the best performance.

[0088] Model evaluation: Evaluation of the performance of the trained model on the test set. Commonly used indicators are root mean square error (RMSE), mean absolute error (MAE), and coefficient of determination (R 2). For example, the smaller the RMSE, the closer the prediction is to the true value. 2.2 Training the PV power prediction model:

[0089] Model type: LSTM, GRU or regression models such as support vector regression (SVR), neural networks, etc. can also be selected.

[0090] Training data: historical light intensity, temperature, humidity are used as input features (X), and the corresponding actual PV power generation power is used as output features (Y).

[0091] Training process: Similar to wind power model training, including data cleaning, feature engineering (e.g., considering timestamp information such as hours, months, and other seasonal factors), dataset splitting, model selection and training, hyperparameter tuning, and model evaluation. PV power generation is more closely related to sunlight intensity and temperature, and the model learns these nonlinear relationships.

[0092] 3. The wind power power prediction model and the PV power prediction model are used as the target power generation power prediction model, and the target power generation power is output by the target power generation power prediction model.

[0093] After the trained wind power prediction model and PV power prediction model are configured in the power prediction unit, they are used to predict future power generation capacity. Entering forecast data:

[0094] When a forecast is required, the power forecast unit receives meteorological forecast data (wind speed, wind direction, light intensity, temperature, humidity, etc.) for each hour of the next 24 hours.

[0095] This prediction data is used as new input features for the model. Model inference (prediction):

[0096] The trained wind power prediction model receives the information such as wind speed, wind direction, temperature, etc. from the meteorological forecast data for the next 24 hours and outputs the predicted wind power for each hour of the next 24 hours based on the learned patterns.

[0097] The trained PV power prediction model receives the information such as light intensity, temperature, humidity, etc. from the meteorological forecast data for the next 24 hours and outputs the predicted PV power for each hour of the next 24 hours.

[0098] Generating information about target power generation capacity: The power prediction unit combines the predicted wind power power and the predicted PV power to obtain the entire predicted power generation power curve for the next 24 hours for that individual station.

[0099] This prediction result (i.e., the information on the target power generation capacity) is forwarded to the operation and maintenance data host for fusion and eventual use by the multi-station control unit and the single-station control unit. II. Purpose of the arrangement of the performance prediction unit: 1. Optimize power distribution: By predicting the power generation capacity of the wind power plant and the photovoltaic power plant, a decision basis can be provided for the multi-station control unit and the single-station control unit to optimize the power distribution and improve the energy utilization efficiency. 2. Realizing stable operation of the power grid: Wind power and photovoltaics have volatility and intermittency, and the prediction of power generation capacity helps in grid planning by taking measures in advance to manage fluctuations in power generation to ensure the stable operation of the power grid. 3. Improving the accuracy of power generation planning: Power generation forecasting can improve the accuracy of the power generation schedule, reduce schedule deviations, and reduce grid operation costs. 4. Supporting the control of individual station optimization: According to the forecast data, the single-station control unit can regulate the wind power and PV power generation capacity in advance to make the power plant's power generation plan more accurate. III. Advantages: 1. Improving energy efficiency: By optimizing power distribution, wind and solar energy resources can be fully utilized to improve energy efficiency. 2. Improving grid stability: By predicting power generation capacity, it can respond to fluctuations in power generation in advance to improve grid stability. 3. Reduce network operating costs: By improving the accuracy of the power generation plan, grid operation costs can be reduced. 4. Increasing the overall intelligence level of the power plant: By predicting power generation capacity, the power plant can be made more intelligent in power control, thereby increasing the intelligence level of the entire power plant. 5. Realizing synergistic regulation on a variety of time scales: According to the prediction of the power prediction unit and in combination with the integrated multi-station control unit and the integrated single-station control unit at two levels, all-round perception at different time scales of milliseconds, seconds and minutes and synergistic regulation of various heterogeneous wind power, photovoltaic and energy storage resources can be realized.

[0100] The power prediction unit in the embodiment of the present application plays an important role in the centralized control operation and maintenance system for a power facility and provides a decision basis for power distribution, grid planning, and power generation plan by predicting the power generation capacity of the wind power plant and the photovoltaic power plant, thereby improving energy utilization efficiency, power grid stability, and economic efficiency.

[0101] Furthermore, the centralized control operation and maintenance system for a power facility in the embodiment of the present application, with the arrangement of the power prediction unit and in combination with the two-stage control architecture of the integrated multi-station control unit and the integrated single-station control unit, realizes all-round perception and synergistic regulation of various heterogeneous wind power, photovoltaic, and energy storage resources on different time scales of milliseconds, seconds, and minutes.

[0102] In particular, the integrated multi-station control unit is responsible for forwarding the commands and efficiently transmits the commands from the main distribution station to each integrated single-station control unit to ensure the accuracy and timeliness of the commands.

[0103] After the integrated single-station control unit receives the commands from the integrated multi-station control unit, it can optimize and redistribute the commands based on the prediction results of the power prediction unit to ensure that the commands can be accurately transmitted to the wind power, photovoltaic, and energy storage units within the station for execution.

[0104] By optimizing the time series and depth of regulation of wind power, photovoltaic, and energy storage units, high-precision tracking of the real-time performance of power plants according to the power generation schedule (command tracking) is achieved, and peak power supply and system peak control are jointly achieved under the premise that there is no mutual interference between the units, which improves the stability of the power grid and the reliability of the power supply.

[0105] Through all-round sensing and synergistic regulation on different time scales of milliseconds, seconds and minutes, a rapid response to fluctuations in the power grid and precise control can be achieved.

[0106] By optimizing the time series and depth of regulation of wind power, photovoltaic and energy storage units, the real-time performance of the power plant can follow the power generation schedule with high accuracy, which improves the accuracy and reliability of grid planning.

[0107] In this way, synergistic regulation of various heterogeneous wind power, photovoltaic and energy storage resources is achieved, thereby fully exploiting the advantages of the different energy sources and improving energy utilization efficiency and grid stability.

[0108] The units do not interfere with each other and jointly realize peak power supply and system peak control, thereby improving grid stability and power reliability.

[0109] Optionally, the centralized control operation and maintenance system for a power supply facility includes an operation and maintenance data host for the acquisition unit and the power prediction unit, wherein the operation and maintenance data host is configured to generate the total power information through the target power generation power and the power generation information. I. Functions of the Operations and Maintenance Data Host: The operation and maintenance data host is the central data processing and analysis platform of the centralized control operation and maintenance system for a power facility.

[0110] It receives the real-time operating data from the sensing unit and the predicted power generation power from the power prediction unit and performs comprehensive analysis and processing of these data.

[0111] The operations and maintenance data host typically has extensive computing and storage capabilities and can support complex data analytics and predictive models. II. Purpose of the Operation and Maintenance Data Host: 1. Generating information about overall performance: The operation and maintenance data host integrates the target power generation power generated by the power prediction unit and the real-time power generation information obtained by the acquisition unit to generate accurate information on the total power, thereby providing a decision basis for the multi-station control unit. 2. Support network planning and optimization: By analyzing real-time operating data and predicting power generation performance, the operation and maintenance data host can provide a comprehensive overview of the operating status of the power grid to assist grid planning and optimization and improve energy utilization efficiency. 3. Implementation of fault diagnosis and predictive maintenance: The operation and maintenance data host can analyze historical operating data, detect potential faults and hidden hazards, and predict the remaining service life of assets to support predictive maintenance. 4. Creating a model to predict the decline in electrochemical energy storage capacity: The operation and maintenance data host is used to build a model to predict the decline of electrochemical energy storage capacity for electrochemical energy storage and predict the health status of energy storage devices. III. Advantages: 1. Improving the reliability of network operations: Through real-time monitoring and prediction, the operation and maintenance data host can detect and resolve anomalies in a timely manner, thereby improving the reliability of network operation. 2. Improving energy efficiency: By optimizing power distribution and network planning, the operation and maintenance data host can improve energy utilization efficiency, thereby reducing operating costs. 3. Reduce maintenance costs: Through predictive maintenance, the operations and maintenance data host can reduce the failure rate and downtime of equipment and lower maintenance costs. 4. Increasing the overall intelligence level of the power plant: By using the operation and maintenance data host, the power plant becomes more intelligent in power control and equipment maintenance, thereby increasing the intelligence level of the entire power plant.

[0112] The operation and maintenance data host in the embodiment of the present application is the core component of the centralized control operation and maintenance system for a power facility, and provides powerful data support for the operation, planning, and maintenance of the power grid through the comprehensive analysis of real-time operation data and the prediction of power generation performance, which improves the reliability and economic efficiency of the grid operation.

[0113] Optionally, a second data switch is configured between the operation and maintenance data host and the acquisition unit. I. Functions of the first data switch: The second data switch is a network device for transferring data between the acquisition unit and the operations and maintenance data host.

[0114] It receives the real-time operating data from the acquisition unit and forwards this data to the operation and maintenance data host for analysis and processing.

[0115] The second data switch typically has high-speed and high-reliability data transmission capability, which can meet the requirements of real-time monitoring and control of the power system. II. Purpose of the arrangement of the second data switch: 2. centralized data transmission: As a data concentration point, the second data switch receives data from multiple acquisition units and transmits this data centrally to the operations and maintenance data host, simplifying the data transmission architecture. 2. Improve data transmission efficiency:

[0116] The data switch can forward data at high speed, improve the efficiency of data transmission, and ensure that the operation and maintenance data host can obtain the real-time operation data in a timely manner. 3. Improve the extensibility of the system:

[0117] If the system needs to increase or reduce the number of acquisition units, it only needs to adjust the configuration of the data switch without changing the control logic of the operation and maintenance data host, which improves the expandability of the system. 4. Data filtering:

[0118] in combination with the filter unit, the data can be filtered and then forwarded to the second switch, and finally the filtered data is forwarded to the operation and maintenance algorithm server, so that the data received by the operation and maintenance algorithm server does not contain any noise. III. Advantages of configuring the second data switch: 1. Real-time data analysis: The high-speed data transmission capability of the second data switch ensures that the operation and maintenance data host can obtain real-time operating data and perform real-time analysis and processing to improve the response speed of the power system. 2. Improve system reliability: The data switch has data buffering and error detection functions, which can improve the reliability of data transmission, reduce the possibility of data loss or error, and improve system stability. 3. Facilitate fault diagnosis and maintenance: The second data switch can record data transmission logs to facilitate fault diagnosis and maintenance, thereby improving system maintainability. 4. Increasing the overall intelligence level of the power plant: By using the second data switch, it is possible to transmit the operating data of each device in the power plant through the data switch in order to lay the database for the more intelligent operation of the power plant.

[0119] The second data switch of the embodiment of the present application plays an important role in the centralized control operation and maintenance system for a power supply facility, realizing data exchange between the acquisition unit and the operation and maintenance data host through efficient data transmission, which improves the real-time, reliability, and maintainability of the system.

[0120] Optionally, a filter unit is configured between the acquisition unit 206 and the second data switch. I. Function of the filter unit: The filter unit is a signal processing device for removing noise and interference from the raw data collected by the acquisition unit.

[0121] It can selectively retain useful signals and suppress unusable signals according to the frequency characteristics of the signals to improve the signal-to-noise ratio of the data.

[0122] The filter unit can use a variety of filtering techniques, such as low-pass filtering, high-pass filtering, band-pass filtering, band-stop filtering, etc. II. Purpose of the arrangement of the filter unit: 1. Improve data quality: The raw data collected by the acquisition unit may contain noise and interference that affect the accuracy and reliability of the data. The filtering unit improves data quality by filtering out noise and interference. 2. Reduce data transfer volume: The noise and interference increase the data transmission volume, and by filtering out noise and interference, the filter unit reduces the data transmission volume and improves the efficiency of data transmission. 3. Improve the accuracy of data analysis: High-quality data is the foundation of data analysis. The filter unit improves the accuracy of data analysis by improving data quality. 4. Guarantee the purity of the data received by the operation and maintenance algorithm server: the filter unit can filter the data and then forward it to the second data switch, and finally forward the filtered data to the operation and maintenance algorithm server, so that the data received by the operation and maintenance algorithm server does not contain any noise. III. Advantages of the configuration: 1. Improve the accuracy of fault diagnosis: High-quality data is the foundation of fault diagnosis. By improving data quality, the filter unit improves the accuracy of fault diagnosis and reduces miscalculations and omissions. 2. Improve the accuracy of predictive maintenance: High-quality data is the foundation of predictive maintenance. By improving data quality, the filter unit improves the accuracy of predictive maintenance to extend equipment life and reduce maintenance costs. 3. Improve the stability of the power system: High-quality data is the foundation of power system control. By improving data quality, the filter unit improves the accuracy and reliability of power system control, thereby enhancing power system stability. 4. Increasing the overall intelligence level of the power plant: The use of the filter unit makes the data within the power plant purer and creates a database for more intelligent operation of the power plant.

[0123] The filter unit in the embodiment of the present application is an important component for improving data quality, reducing data transmission volume, and improving the accuracy of data analysis. It provides an important data guarantee for the safe, reliable, and economical operation of the power system.

[0124] Optionally, the centralized control operation and maintenance system for a power supply facility includes a protection unit for the power generation plant. I. Function of the protection unit: In the complementary integrated multi-energy operation and maintenance system, the protection unit in the embodiment of the present application is a component located in each power generation facility (wind power, photovoltaics, hydropower, pumped storage, electrochemical energy storage, thermal power). It is electrically connected to the acquisition unit and its primary function is to protect the acquisition unit. II. Purpose of the arrangement of the protection unit: The main purpose of the protection unit is to protect the detection unit 206 from the effects of electrical faults. In the power grid, various electrical faults (e.g., overvoltage, overcurrent, short circuit, etc.) can cause damage to the detection unit and impair its normal operation. The protection unit can detect and isolate these faults in a timely manner to ensure the safe operation of the detection unit. III. Advantages of the protection unit configuration: Improve system reliability: By protecting the detection unit from damage caused by electrical faults, the protection unit can improve the reliability and stability of the entire complementary integrated multi-energy operation and maintenance system.

[0125] Ensuring the accuracy of data acquisition: The acquisition unit is the key component of data acquisition. The protection unit ensures the normal operation of the acquisition unit, thus guaranteeing the accuracy and integrity of data acquisition.

[0126] Extending the service life of equipment: By isolating electrical faults in a timely manner, the protection unit reduces the risk of equipment damage and extends the service life of the detection unit and other associated devices.

[0127] Reduce operating and maintenance costs: By reducing equipment damage and downtime, the protection unit reduces the operating and maintenance costs of the system.

[0128] Improve system safety: the protection unit can detect and isolate electrical faults in time, reduce the occurrence of electrical accidents and improve the safety of the system.

[0129] In the embodiment of the present application, the protection unit plays an important protective function in the complementary integrated multi-energy operation and maintenance system. It can protect the detection unit 206 from electrical faults to improve the reliability, stability, and safety of the system, reduce operation and maintenance costs, and extend the service life of the equipment.

[0130] Optionally, the single station control unit can also control a plurality of the above-mentioned power generation plants in the following manner.

[0131] The single-station control unit sets an objective function for the maximum power generation capacity of the wind power plant and the photovoltaic power plant through the target power generation capacity, and determines the constraints through the priority order of energy storage of the wind power plant, the photovoltaic power plant, the chemical energy storage power plant, the pumped storage power plant, the thermal power plant, and the hydropower plant to construct a restrictive peak control and dispatching model, whereby the power generation plant is controlled by the restrictive peak control and dispatching model to output an amount of electricity satisfying the information of the single-station power. Scenario settings:

[0132] A single station receives the task (single station power information) from a multi-station control unit: to provide an additional power generation increment of 120 MW within the next hour.

[0133] This single station control unit includes: Wind power: currently predicted maximum output up to 60 MW. Photovoltaics: currently predicted maximum output up to 30 MW. Chemical energy storage power plant: currently sufficient capacity to release up to a maximum of 20 MW. Hydropower: current water availability, maximum power up to 30 MW. Thermal power: as reserve with a minimum output of 10 MW and a maximum output of 50 MW.

[0134] Determine constraints and priorities: Total power requirement: an increment of 120 MW must be provided, as shown in the single station power information. Wind power and photovoltaics: primarily as renewable energy sources, but limited by their maximum predicted power.

[0135] Logic for storage prioritization: During periods of electricity surpluses, priority is given to energy sources that are underutilized or have unstable power generation, such as wind power and photovoltaics. In times of electricity shortage (need for additional power), energy is drawn from the corresponding storage facilities.

[0136] Hydropower: has a certain degree of flexibility and can be regulated.

[0137] Thermal power: less flexible, with start / stop and minimum power limits, as a last resort for supplementation or regulation.

[0138] Power limitations of the plants: Each power generation plant must not exceed its rated power or maximum power under the current operating conditions.

[0139] Constructing a restrictive peak control and dispatching model (simplified logic): After the single-station control unit receives a command to generate an additional 120 MW of power, it initiates an internal optimization and dispatching model.

[0140] Objective function: Minimization of operating costs (e.g. preference for low-cost renewable energy sources and reduction of thermal power consumption) while simultaneously covering the total power demand. Restrictions: Demand for the total power increment: P wind power + P photovoltaics + P energy storage output + P hydropower + P thermal power = 120 MW; Wind power capacity constraints: 0 ≤ P Wind power ≤ 60 MW (current predicted maximum power); Photovoltaic power limitations: 0 ≤ P Photovoltaic ≤ 30 MW (current predicted maximum power); Restrictions for charging / discharging energy storage devices: 0 ≤ P storage release ≤ 20 MW (current maximum release power); Hydropower capacity restrictions: 0 ≤ P Hydropower ≤ 30 MW (current available water volume and maximum capacity); Thermal power capacity restrictions: 10 MW ≤ P thermal power ≤ 50 MW (assuming that the thermal power plant operates with minimum power restrictions); Priority of energy storage: in case of electricity shortage, the release of energy storage has priority. Priority of energy storage: in case of electricity shortage, the release of energy storage has priority. Model solution process (decision logic for the single-station control unit): The optimization model of the single-station control unit is calculated based on the objective function and constraints described above. Example:

[0141] 1. The potential of wind power and photovoltaics has priority: try to maximize performance in order to fully exploit renewable energy sources. Wind power increment: 60 MW; Photovoltaic increment: 30 MW; at this point the total increment is: 60 + 30 = 90 MW; the required increment: 120 - 90 = 30 MW;

[0142] 2. Priority of energy storage is taken into account: at this time, the power is insufficient and needs to be increased, so releasing energy storage has priority. Energy storage release: 20 MW (maximum release capacity); at this point the total increment is: 90 + 20 = 110 MW; the required increment: 120 - 110= 10 MW;

[0143] 3. Supplementation with hydropower or thermal power will be considered: the remaining 10 MW can be supplemented with hydropower or thermal power. If hydropower is efficient and less costly, priority will be given to hydropower. Hydropower increment: 10 MW (assuming that hydropower can be flexibly adjusted); At this point, the total increment is: 110 + 10 = 120 MW, which covers the demand. 4. Issue of the final control command:

[0144] According to the optimization results of the model, the single-station control unit sends specific power distribution commands to the individual power generation plants: Wind turbine: capacity increment of 60 MW; Photovoltaic inverters: power increment of 30 MW; Energy storage converter: release of 20 MW of electricity; Hydraulic turbines: power increment of 10 MW; Thermal power plant: Maintain current output or fine-tune as needed; if there is no other demand, additional thermal power may not be required.

[0145] These commands are forwarded to the corresponding power generation units via the first data switch, enabling fine-tuned control of the power generation units to meet the grid's peak control needs and optimize energy utilization. This approach embodies the "global optimization, local refinement" principle, meaning the multi-station control unit performs macroscopic scheduling, while the single-station control unit performs microscopic refinement control based on the optimization model.

[0146] With reference to Fig. Figure 3 shows a flowchart of steps of an operation and maintenance method for a power generation plant, which method may in particular comprise the following steps: Step 301: Obtaining information about overall performance; Step 302: Generating single-station power information for the single-station control unit based on the total power information and the number of single stations of the single-station control unit; Step 303: Sending the single-station power information to the single-station control unit; wherein the single-station control unit is configured to control the plurality of power generation plants based on the single-station power information and the power generation plant production characteristic information.

[0147] In a specific implementation, the embodiment of the present invention is used for a multi-station control unit; wherein the multi-station control unit is electrically connected to a plurality of single-station control units; and wherein the single-station control units are electrically connected to a plurality of power generation plants of different energy types.

[0148] With reference to Fig. Figure 4 shows a flowchart of steps of another operation and maintenance method for a power generation plant, which method may in particular comprise the following steps: Step 401: Obtaining information about single station performance; Step 402: Controlling the plurality of power generation plants based on the information on the single-station power and the information on the production characteristics of the power generation plants.

[0149] In a specific implementation, the embodiment of the present invention is applied to a station control unit corresponding to the multi-station control unit; wherein the multi-station control unit is electrically connected to a plurality of single-station control units; and wherein the single-station control units are electrically connected to a plurality of power generation plants of different energy types; and wherein the multi-station control unit is configured to obtain total power information, generate single-station power information for the single-station control unit based on the total power information and the number of single stations of the single-station control unit, and transmit the single-station power information to the single-station control unit.

[0150] It should be noted that, for the sake of simplicity, the embodiments of the method are all presented as a series of combinations of actions. However, those skilled in the art should be aware that the embodiments of the present invention are not limited by the order of the described actions, since certain steps according to the embodiments of the present invention may be performed in a different order or simultaneously. Second, those skilled in the art should also be aware that the embodiments explained in the description are preferred embodiments, and the respective actions are not absolutely necessary for the embodiments of the present invention.

[0151] With reference to Fig. Figure 5 shows a structural block diagram of an operation and maintenance device for a power generation plant provided by an embodiment of the present application, which device may in particular comprise the following modules: a total power information obtaining module 501 configured to obtain the total power information; a single-station power information generation module 502 configured to generate single-station power information for the single-station control unit based on the total power and number of single-station information of the single-station control unit; a single-station power information transmission module 503 configured to transmit the single-station power information to the single-station control unit; wherein the single-station control unit is configured to control the plurality of power generation plants based on the single-station power information and the power generation plant production characteristic information.

[0152] With reference to Fig. 6 shows a structural block diagram of another operation and maintenance device for a power generation plant provided by an embodiment of the present application, which device may in particular comprise the following modules: a single-station power information obtaining module 601 configured to obtain the single-station power information; a power generation plant control module 602 configured to control the plurality of power generation plants based on the single-station power information and the power generation plant production characteristic information.

[0153] The embodiments of the device are described in a relatively simple manner, since they are substantially similar to the embodiments of the method, and it is sufficient to refer to part of the description of the embodiments of the method where relevant.

[0154] Moreover, an embodiment of the present invention further provides an electronic device as described in Fig. 7, it comprises a processor 701, a communication interface 702, a memory 703 and a communication bus 704, wherein the processor 701, the communication interface 702 and the memory 703 complete the communication with each other via the communication bus 704, and wherein the memory 703 is provided for storing a computer program; and wherein the processor 701 is provided to implement the operation and maintenance method for a power generation plant described in one of the above embodiments when the program stored in the memory 703 is executed: The communication bus referred to in the terminal device above can be, for example, a Peripheral Component Interconnect Standard (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The communication bus can be divided into address bus, data bus, control bus, etc. For simplicity, only a thick line is shown in the drawings, but this does not imply that there is only one bus or one bus type.

[0155] The communication interface is used for communication between the above-mentioned terminal device and other systems.

[0156] The memory may comprise random access memory (RAM) or non-volatile memory, such as at least one disk drive. Optionally, the memory may also be at least one storage device remote from the aforementioned processor.

[0157] The aforementioned processor may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processing (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

[0158] As in Fig.8, in a further embodiment of the present invention, a computer-readable storage medium 801 is also provided in which instructions are stored, which instructions, when executed on a computer, cause the computer to carry out the operation and maintenance method for the power generation plant described in the above embodiment.

[0159] The embodiments of the present invention are explained in more detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above-described embodiments. The specific embodiments mentioned above are merely illustrative and not restrictive. Under the inspiration of the present invention, one of ordinary skill in the art can also implement many other forms without departing from the spirit of the present invention and the scope of the claims, all of which fall within the scope of the present invention.

[0160] One of ordinary skill in the art can understand that the units and algorithmic steps of the examples described in connection with the embodiments disclosed herein can be implemented as electronic hardware or as a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the particular application and the design constraints of the technical solution. One of ordinary skill in the art may use different methods to implement the described functions for each particular application, but such implementations should not be considered outside the scope of the present invention.

[0161] One skilled in the art will clearly recognize that the specific operations of the systems, devices, and units described above may, for the sake of simplicity, be referred to the corresponding operations in the preceding embodiments of the method and will not be repeated here.

[0162] In the disclosed embodiments of the present application, it can be understood that the disclosed apparatus and method can be implemented using other methods. For example, the above-explained embodiments of the apparatus are only exemplary; for example, the division of the unit is only a division of the logical function, and in actual implementation, other division methods may be used; for example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not implemented. Furthermore, the illustrated or discussed coupling between each other, or the direct coupling or communication connection, may be a direct coupling or a communication connection via some interfaces, devices, or units, and may be electrical, mechanical, or in another form.

[0163] A unit explained as a separate element may be physically separate or physically non-separated; an element indicated as a unit may be a physical unit or not a physical unit; namely, it may be located in one location or distributed across multiple network units. Depending on actual needs, some or all of the units may be selected to achieve the objective of the solution of the present embodiment.

[0164] Furthermore, in the respective embodiments of the present invention, the respective functional units may be integrated into one processing unit, the respective units may each physically exist separately, and it is also possible for two or more than two units to be integrated into one unit.

[0165] If the function is implemented as a functional unit of software and is sold or provided as a separate product, it may be stored in a computer-readable storage medium. Based on the understanding, the essence of the technical solution of the present invention or a part or part of the technical solution contributing to the prior art may be represented in the form of a software product, and the computer software product is stored in a storage medium and includes a plurality of instructions used to make a computing device (may be a PC, server, or network device, etc.) perform all or part of the steps of the method in each of the embodiments of the present invention. The above-mentioned storage medium includes a USB flash drive, a portable hard disk, ROM, RAM, a magnetic disk, or an optical storage device, and other media capable of storing program codes.

[0166] The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto. Any person skilled in the art familiar with the technical field of the present invention can readily conceive modifications or substitutions within the technical range disclosed by the present invention, and all such modifications or substitutions fall within the scope of the present invention. The scope of the present invention is therefore determined by the scope of the claims.

Claims

[1] Centralized control operation and maintenance system for a power supply facility, characterized by that it comprises a multi-station control unit for obtaining information on the overall performance; wherein the multi-station control unit is electrically connected to a plurality of single-station control units; and wherein the single-station control units are electrically connected to a plurality of power generation plants of different energy types; and wherein the multi-station control unit is arranged to generate information about the individual station power for the individual station control unit based on the information about the total power and the number of individual stations of the individual station control unit; and wherein the single-station control unit is configured to control the plurality of power generation plants based on the information about the single-station power and the information about the production characteristics of the power generation plants. [2] Centralized control operation and maintenance system for a power supply device according to claim 1, characterized by that a first data switch is configured between the single-station control unit and the power generation plant; wherein the first data switch is configured to receive a power distribution command sent from the single-station control unit and to forward the power distribution command to a power generation plant that corresponds to the power distribution command. [3] Centralized control operation and maintenance system for a power supply device according to claim 2, characterized bythat the centralized control operation and maintenance system for a power supply facility comprises a static reactive power generator for the first data switch; wherein the first data switch is provided to record the operating data of the power generation plant; and wherein the static reactive power generator is configured to sense the grid parameters and output power based on the grid parameters, the power distribution commands, and the operating data. [4] Centralized control operation and maintenance system for a power supply device according to one of claims 1 to 3, characterized bythat the power generation plant comprises a wind power plant, a photovoltaic power plant, a chemical energy storage power plant, a pumped storage power plant, a thermal power plant and a hydroelectric power plant; wherein the information on the production characteristics includes the priority order of energy storage of the wind power plant, the photovoltaic power plant, the chemical energy storage power plant, the pumped storage power plant, the thermal power plant and the hydroelectric power plant. [5] Centralized control operation and maintenance system for a power supply device according to one of claims 1 to 4, characterized by that the information on production characteristics continues to include the target power generation capacity of the wind power plant and the photovoltaic power plant. [6] Centralized control operation and maintenance system for a power supply device according to claim 5, characterized bythat the centralized control operation and maintenance system for a power supply facility comprises a power generation plant acquisition unit, wherein the first acquisition unit is provided to obtain the power generation information of the power generation plant. [7] Centralized control operation and maintenance system for a power supply device according to claim 6, characterized by that the centralized control operation and maintenance system for a power supply facility comprises a power prediction unit for the wind power plant and the photovoltaic power plant; wherein the power prediction unit is arranged to determine the target power generation power. [8] Centralized control operation and maintenance system for a power supply device according to claim 7, characterized bythat the centralized control operation and maintenance system for a power supply facility comprises an operation and maintenance data host, wherein the operation and maintenance data host is arranged to generate the information on the total power through the target power generation power and the power generation information. [9] Centralized control operation and maintenance system for a power supply device according to claim 8, characterized by that a second data switch is configured between the operations and maintenance data host and the acquisition unit. [10] Centralized control operation and maintenance system for a power supply device according to claim 9, characterized by that the centralized control operation and maintenance system for a power supply device comprises a filter unit for the second data switch.

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