New energy AGVC centralized operation and maintenance management method, system, device and medium

Abstract

The invention relates to the technical field of power system operation and maintenance, in particular to a new energy AGVC centralized operation and maintenance management method, system, equipment and medium, and the method comprises the following steps: building an operation and maintenance response economic model containing operation and maintenance response operation constraint and operation and maintenance cost through analyzing the operation and maintenance response peak regulation capability of a new energy field station side; based on the operation and maintenance response economic model, considering the power load balance of the new energy station, and establishing an operation simulation constraint set suitable for AGVC operation and maintenance management system operation and maintenance strategy planning; based on the operation and maintenance response economy model and the operation simulation constraint set, establishing an operation and maintenance strategy planning model; and performing linear solution on the operation and maintenance strategy planning model to obtain an operation and maintenance strategy planning optimal configuration scheme with the optimal economic cost. According to the method, the operation and maintenance response peak regulation capability of the new energy station side can be accurately evaluated, the efficiency loss cost of operation and maintenance response is reduced while the dynamic balance of the output power / voltage of the new energy station and the demand of a power grid is realized, and the line pressing performance of the system is improved.

Description

Technical Field

[0001] This invention relates to the field of power system operation and maintenance technology, and more specifically, to a centralized operation and maintenance management method, system, equipment, and medium for new energy AGVC. Background Technology

[0002] New energy power plants, utilizing renewable energy sources such as wind and solar power, experience significant fluctuations in their power load, necessitating more complex load management and control. AGC and AVC systems (AGVC for short) are crucial control systems in these plants, forming the core of grid interconnection and handling random load fluctuations to ensure continuous and stable power supply. However, current maintenance capabilities for AGC and AVC systems among new energy power plant personnel are relatively weak, and maintenance techniques remain outdated. This poses a challenge to the safe and stable operation of these plants. Furthermore, existing AGC systems have insufficient line-closing performance during peak shaving periods, failing to meet the increasing economic and grid demands for peak shaving capacity from new energy power plants. Therefore, new energy power plant load management and control urgently require more comprehensive and efficient load management and control solutions, while simultaneously improving and enhancing the line-closing performance of AGC systems to meet the demands of power load management and control, increase power plant utilization, reduce costs, and ensure the safe and stable operation of the power grid. Summary of the Invention

[0003] The purpose of this invention is to provide a centralized operation and maintenance management method, system, equipment, and medium for new energy AGVC. It extends the operation and maintenance strategy planning problem into a planning optimization problem that considers operation and maintenance costs. It can accurately assess the operation and maintenance response peak-shaving capability of new energy power plants and incorporate it into the system's power load balance. While achieving a dynamic balance between the output power / voltage of new energy power plants and the demand of the power grid, it reduces the efficiency loss cost of operation and maintenance response, improves the system's line performance, and provides a decision-making basis for operation and maintenance troubleshooting.

[0004] The embodiments of the present invention are achieved through the following technical solution: a centralized operation and maintenance management method for new energy AGVC, comprising the following steps:

[0005] By analyzing the operation and maintenance response peak-shaving capacity of new energy power plants, an economic model of operation and maintenance response, including operation and maintenance response constraints and operation and maintenance costs, is established.

[0006] Based on the aforementioned operation and maintenance response economic model, and taking into account the power load balance of new energy power plants, an operation simulation constraint set suitable for operation and maintenance strategy planning of the AGVC operation and maintenance management system is established.

[0007] Based on the aforementioned operation and maintenance response economic model and operation simulation constraint set, an operation and maintenance strategy planning model is established.

[0008] The operation and maintenance strategy planning model is solved linearly to obtain the optimal configuration scheme for operation and maintenance strategy planning with the best economic cost.

[0009] According to a preferred embodiment, the operation and maintenance response economic model includes: establishing a set of operation and maintenance response constraints and an operation and maintenance response cost model.

[0010] According to a preferred embodiment, the expression of the operation and maintenance response cost model is as follows:

[0011]

[0012] In the above formula, Indicates the cost of operation and maintenance response. Indicates the total number of moments. Indicates the first time, Indicates the total number of nodes at the station. Indicates the first Node No. Indicates the overall maintenance response category. Indicates the first Operation and maintenance response, Indicates the first Node number 1 participates in the Cost reduction for similar operational and maintenance responses Indicates the first Node number 1 Participate in the first The amount of performance loss in operation and maintenance response.

[0013] According to a preferred embodiment, the set of operational constraints for the maintenance response includes: a constraint to minimize the efficiency loss of the maintenance response and a constraint to minimize the cost of the maintenance response.

[0014] According to a preferred embodiment, the set of operational simulation constraints includes: operation and maintenance response constraints, node power load balancing constraints, and output voltage constraints.

[0015] According to a preferred embodiment, the node power load balance constraint is: the output of any new energy power station at each node at each time must be balanced with the predicted power load.

[0016] The output voltage constraint is that the difference between the voltage of the high-voltage side bus of the main transformer at each node and the grid voltage must be kept within a safe range at each node at all times.

[0017] According to a preferred embodiment, the method further includes: constructing a power load prediction model to predict the power load of each power station.

[0018] The present invention also provides a centralized operation and maintenance management system for new energy AGVC, which is applied to the method described above. The operation and maintenance management system includes a main station-side production control platform, an AGVC operation and maintenance terminal, a main station-side management information platform, and multiple AGVC servers at various sites.

[0019] The main station-side production control platform is connected to the main station-side management information platform and the AGVC operation and maintenance terminal. The AGVC operation and maintenance terminal is connected to the AGVC server at the site. The main station-side production control platform includes multiple main station-side AGVC servers. The multiple main station-side AGVC servers are used to receive and store AGVC-related business data from each site AGVC server.

[0020] The main station-side management information platform includes an AGVC defect elimination knowledge base, which stores historical AGVC defect elimination information.

[0021] The AGVC operation and maintenance terminal is a terminal device deployed in the production control center on the main station side, used to calculate the operation and maintenance strategy planning and optimization configuration scheme based on AGVC-related business data and historical AGVC defect elimination information.

[0022] The present invention also provides an electronic device, comprising:

[0023] Memory, the memory storing execution instructions; and

[0024] A processor that executes the execution instructions stored in the memory, causing the processor to perform the method described above.

[0025] The present invention also provides a readable storage medium storing executable instructions, which, when executed by a processor, are used to implement the method described above.

[0026] The technical solution of the centralized operation and maintenance management method, system, equipment and medium for new energy AGVC in this embodiment of the invention has at least the following advantages and beneficial effects: This invention extends the operation and maintenance strategy planning problem into a planning optimization problem that considers operation and maintenance costs. It can accurately assess the peak-shaving capacity of the operation and maintenance response on the side of new energy power plants and incorporate it into the system power load balance. While realizing the dynamic balance between the output power / voltage of new energy power plants and the demand of the power grid, it reduces the efficiency loss cost of operation and maintenance response, improves the line performance of the system, and provides a decision basis for operation and maintenance troubleshooting. Attached Figure Description

[0027] Figure 1 This is a flowchart illustrating a centralized operation and maintenance management method for new energy AGVC provided in Embodiment 1 of the present invention;

[0028] Figure 2This is a system connection diagram of the centralized operation and maintenance management system for new energy AGVC provided in Embodiment 2 of the present invention;

[0029] Figure 3 This is a schematic diagram of the production control center terminal connection structure of the centralized operation and maintenance management system for new energy AGVC provided in Embodiment 2 of the present invention;

[0030] Figure 4 This is a schematic diagram of the information management center terminal connection structure of the centralized operation and maintenance management system for new energy AGVC provided in Embodiment 2 of the present invention;

[0031] Figure 5 This is a module connection diagram of the centralized operation and maintenance management system for new energy AGVC provided in Embodiment 2 of the present invention. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Example 1

[0034] See Figure 1 As shown, Figure 1 This is a flowchart illustrating a centralized operation and maintenance management method for new energy AGVC provided by the present invention.

[0035] The centralized operation and maintenance management method for new energy AGVC provided in this embodiment includes the following steps:

[0036] 1. Steps for constructing the economic model: By analyzing the peak-shaving capacity of the operation and maintenance response on the side of the new energy power station, an economic model of operation and maintenance response that includes operation and maintenance constraints and operation and maintenance costs is established.

[0037] The operational response economic model includes: establishing a set of operational response constraints and an operational response cost model. The expression for the operational response cost model is as follows:

[0038]

[0039] In the above formula, Indicates the cost of operation and maintenance response. Indicates the total number of moments. Indicates the first time, Indicates the total number of nodes at the station. Indicates the first Node No. Indicates the overall maintenance response category. Indicates the first Operation and maintenance response, Indicates the first Node number 1 participates in the Cost reduction for similar operational and maintenance responses Indicates the first Node number 1 Participate in the first The amount of performance loss in operation and maintenance response.

[0040] The set of operational constraints for the maintenance response includes: a constraint to minimize the efficiency loss of the maintenance response and a constraint to minimize the cost of the maintenance response. The expression for the constraint to minimize the efficiency loss of the maintenance response is as follows:

[0041]

[0042] In the above formula, Indicates the first Node number 1 The lower limit of the absolute value of the difference between power generation and efficiency loss at any given time. Indicates the first Node number 1 The upper limit of the absolute value of the difference between power generation and efficiency loss at any given time. Indicates the first Node number 1 Predicting output at any given moment Indicates the first The installed capacity of node number 1 Indicates the first Node number 1 Power generation at any given moment.

[0043] The expression for the minimum operation and maintenance response cost constraint is as follows:

[0044]

[0045] In the above formula, Indicates the cost of performance loss. This indicates the lower limit of the cost of performance loss. This indicates the upper limit of the cost of performance loss.

[0046] 2. Design constraints, the specific steps are as follows:

[0047] 2.1 Based on the aforementioned operation and maintenance response economic model, and taking into account the power load balance of new energy power plants, establish an operation simulation constraint set suitable for operation and maintenance strategy planning of the AGVC operation and maintenance management system.

[0048] The operational simulation constraint set includes: operation and maintenance response constraints, node power load balancing constraints, and output voltage constraints. Specifically, the node power load balancing constraint is that the output of any new energy power station at each node at any given time must be balanced with the predicted power load. The output voltage constraint is that the difference between the voltage of the high-voltage side bus of the node's main transformer and the grid voltage must be kept within a safe range at each node at any given time.

[0049] 2.2 Construct a power load prediction model to predict the power load of each power station. The details will not be elaborated here.

[0050] 3. Steps for constructing the operation and maintenance strategy planning model: Based on the operation and maintenance response economic model and the operation simulation constraint set, an operation and maintenance strategy planning model is established. The objective function expression of the operation and maintenance strategy planning model is as follows:

[0051]

[0052] In the above formula, the second row indicates that the types of units considered in the model include wind turbines, photovoltaic power plants, and hydropower units. This represents the cost of efficiency loss in wind turbine operation and maintenance response. The efficiency loss cost of operation and maintenance response of surface hydropower units This represents the cost of performance loss in response to operation and maintenance of photovoltaic (PV) units.

[0053] 4. Solve the operation and maintenance strategy planning model linearly to obtain the optimal configuration scheme for operation and maintenance strategy planning with the best economic cost. In one embodiment of this example, the solver used for solving the problem includes, but is not limited to, the CPLEX solver or the IPOPT solver, which will not be described in detail here.

[0054] In summary, the technical solution of the centralized operation and maintenance management method, system, equipment and medium for new energy AGVC according to the embodiments of the present invention has at least the following advantages and beneficial effects: The present invention extends the operation and maintenance strategy planning problem into a planning optimization problem that considers operation and maintenance costs, and can accurately assess the peak-shaving capacity of the operation and maintenance response on the side of new energy power plants and incorporate it into the system power load balance. While realizing the dynamic balance between the output power / voltage of new energy power plants and the demand of the power grid, it reduces the efficiency loss cost of operation and maintenance response, improves the line performance of the system, and provides a decision basis for operation and maintenance troubleshooting.

[0055] Example 2

[0056] See Figures 2 to 5 As shown, this embodiment provides a centralized operation and maintenance management system for new energy AGVC, which is applied to the method described in Embodiment 1. The operation and maintenance management system includes a main station-side production control platform, an AGVC operation and maintenance terminal, a main station-side management information platform, an energy management platform, and multiple AGVC servers at various sites.

[0057] The main station-side production control platform is connected to both the main station-side management information platform and the AGVC operation and maintenance terminal.

[0058] The AGVC operation and maintenance terminal connects to the AGVC server at the power station, and the energy management platform is deployed on the new energy power station side. In this embodiment, data probes are deployed on the new energy power station side to collect operational data from AGVC equipment and the energy management platform, as well as AGVC-related business data, and upload them to the main station side in a unified format. This implementation relies on front-end data probes to establish point-to-point connections, without consuming resources of the monitored system. Specifically, in one implementation of this embodiment, the new energy power station side connects to the communication link of the new energy central control center. The data probes and the main station side use standard power protocols, and communicate with each other through a vertical encryption device. Furthermore, both the main station side and the power station side are equipped with network security protection devices, including SDH equipment, routers, and vertical encryption devices. In addition, the main station side is equipped with a switch and firewall connecting to the main station side equipment. Furthermore, this embodiment also includes a fault alarm module on the main station side. Based on the business data obtained from the data probes, the fault alarm module analyzes the equipment failure rate and its distribution, and then predicts the occurrence of equipment failures in a future time period based on real-time operational data during system operation, and performs risk assessments of the failures. Based on the actual operation of the new energy plant, risk assessments can be conducted on production indicators and equipment operation data within the AGVC system, and risk indices can be preset. When the risk index exceeds a certain limit, an alarm message is issued. For resource data within the system, alarms can be issued in advance before the risk index limit is reached, based on the trend of resource data changes. The alarms can be issued using various visualization technologies, such as voice alarms, sound and light alarms, light boards, pop-up warnings on the system display screen at the main station, or remote alarms via mobile terminal devices, such as sending SMS messages. Different alarm methods can be set to differentiate alarms based on their severity. Alarms are categorized into levels according to the severity of the detected faults. In practical applications, the required level is set according to the specific situation. In this embodiment, three levels of warning methods are set: the lowest level is a minor fault that does not temporarily affect the system's operation; the highest level is a fault that seriously affects the overall normal operation of the system; and the intermediate level is a fault that affects a part of the system's operation but does not affect the overall system. Different alarm methods are used for different levels of warnings. For example, when using voice warnings, different voice prompts can be set to distinguish them; if using light warnings, different colors or different flashing frequencies of lights can be used for differentiation.

[0059] Furthermore, the master station-side production control platform includes multiple master station-side AGVC servers. These servers receive and store AGVC-related business data from each station's AGVC server via the new energy central control center service bus, and store the data in a database after standardization processing. Furthermore, the master station-side management information platform includes an AGVC defect elimination knowledge base, which stores historical AGVC defect elimination information. The AGVC operation and maintenance terminal is a terminal device deployed in the master station-side production control center, used to calculate operation and maintenance strategy planning and optimization configuration schemes based on AGVC-related business data and historical AGVC defect elimination information.

[0060] Furthermore, in one embodiment of this example, the main station also includes a fault elimination module. The fault elimination module is used to assist the system in fault elimination. When a fault occurs, it can send specific fault location and fault type to remind operators to eliminate the fault in time. It can also be implemented remotely. The system can remotely view the operating status of the equipment, communication messages between system equipment hardware and software, configuration files and other multi-dimensional data. After locating the fault, its code can be modified remotely to achieve the purpose of remote fault elimination.

[0061] Furthermore, the main station-side production control platform also includes a remote inspection module, which is communicatively connected to various devices on the site side. The remote inspection module periodically inspects the AGVC system, energy management platform equipment operation, business data uploads, interactions, software operation, middleware, etc., within the new energy power station to detect whether they are in normal operating condition. If any data is abnormal, an alarm signal is sent to the remote monitoring and inspection equipment.

[0062] Furthermore, the main station-side production control platform also includes a display device, which is connected to the status monitoring module, fault alarm module, defect elimination module, and remote inspection module. The status monitoring module displays diverse data through the display device; alarm signals and alarm prediction information issued by the fault alarm module are displayed on the display device, which needs to have multimedia capabilities and be able to provide voice broadcasts; the defect elimination module allows for human-machine interaction through the display device, enabling workers to select and control defect elimination; and the inspection results data from the remote inspection module are displayed on the display device. The display device is used for the overall visual display of information from the production control platform, facilitating on-duty personnel to intuitively observe data status, respond to data anomaly warnings, and improve the efficiency of daily inspections.

[0063] Example 3

[0064] This embodiment provides an electronic device, including: a memory storing execution instructions; and a processor executing the execution instructions stored in the memory, causing the processor to perform the method as described in the embodiment.

[0065] Example 4

[0066] This embodiment provides a readable storage medium that stores executable instructions, which, when executed by a processor, are used to implement the method described in Embodiment 1.

[0067] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A new energy AGVC centralized operation and maintenance management method, characterized in that, Includes the following steps: By analyzing the operation and maintenance response peak-shaving capacity of new energy power plants, an economic model of operation and maintenance response, including operation and maintenance response constraints and operation and maintenance costs, is established. Based on the aforementioned operation and maintenance response economic model, and taking into account the power load balance of new energy power plants, an operation simulation constraint set suitable for operation and maintenance strategy planning of the AGVC operation and maintenance management system is established. Based on the aforementioned operation and maintenance response economic model and operation simulation constraint set, an operation and maintenance strategy planning model is established. The operation and maintenance strategy planning model is solved linearly to obtain the optimal configuration scheme for operation and maintenance strategy planning with the best economic cost.

2. The new energy AGVC centralized operation and maintenance management method of claim 1, wherein, The operation and maintenance response economic model includes: establishing a set of operation and maintenance response constraints and an operation and maintenance response cost model.

3. The centralized operation and maintenance management method for new energy AGVC as described in claim 2, characterized in that, The expression for the operation and maintenance response cost model is as follows: ； In the above formula, Indicates the cost of operation and maintenance response. Indicates the total number of moments. Indicates the first time, Indicates the total number of nodes at the station. Indicates the first Node No. Indicates the overall maintenance response category. Indicates the first Operation and maintenance response, Indicates the first Node number 1 participates in the Cost reduction for similar operational and maintenance responses Indicates the first Node number 1 Participate in the first The amount of performance loss in operation and maintenance response.

4. The new energy AGVC centralized operation and maintenance management method of claim 3, wherein, The set of operational constraints for maintenance response includes: constraints on minimizing the efficiency loss of maintenance response and constraints on minimizing maintenance response cost.

5. The new energy AGVC centralized operation and maintenance management method according to any one of claims 1 to 4, characterized in that, The set of operational simulation constraints includes: operation and maintenance response constraints, node power load balancing constraints, and output voltage constraints.

6. The new energy AGVC centralized operation and maintenance management method of claim 5, wherein, The node power load balance constraint is: the output of any new energy power station at each node at any time must be balanced with the predicted power load. The output voltage constraint is that the difference between the voltage of the high-voltage side bus of the main transformer at each node and the grid voltage must be kept within a safe range at each node at all times.

7. The new energy AGVC centralized operation and maintenance management method of claim 6, wherein, The method also includes: constructing a power load prediction model to predict the power load of each power station.

8. A new energy AGVC centralized operation and maintenance management system applied to the method of any one of claims 1 to 7, characterized in that, The operation and maintenance management system includes a main station-side production control platform, AGVC operation and maintenance terminal, a main station-side management information platform, and multiple AGVC servers at various sites. The main station-side production control platform is connected to the main station-side management information platform and the AGVC operation and maintenance terminal. The AGVC operation and maintenance terminal is connected to the AGVC server at the site. The main station-side production control platform includes multiple main station-side AGVC servers. The multiple main station-side AGVC servers are used to receive and store AGVC-related business data from each site AGVC server. The main station-side management information platform includes an AGVC defect elimination knowledge base, which stores historical AGVC defect elimination information. The AGVC operation and maintenance terminal is a terminal device deployed in the production control center on the main station side, used to calculate the operation and maintenance strategy planning and optimization configuration scheme based on AGVC-related business data and historical AGVC defect elimination information.

9. An electronic device, comprising: include: The memory stores execution instructions; as well as A processor that executes execution instructions stored in the memory, causing the processor to perform the method as described in any one of claims 1 to 7.

10. A readable storage medium, characterized by, The readable storage medium stores execution instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 1 to 7.

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