Information collection method and system of power system and power system

Abstract

This application discloses a method, system, and power system for information collection in a power system, belonging to the field of communication technology. The method includes: receiving a request message sent by a near-end maintenance device, and determining the power equipment under maintenance and the corresponding information type to be collected based on the request message; if the near-end gateway device and the power equipment under maintenance are different devices, forwarding the request message to the communication bus; receiving a first reply message from the target power equipment via the communication bus; the first reply message carrying target information corresponding to the information type to be collected; and sending the first reply message to the near-end maintenance device. This application enables the near-end maintenance device to access any power equipment and collect information from all power equipment in the power system, eliminating the need for maintenance personnel to approach each power equipment individually or to repeatedly establish communication connections when switching maintenance targets, thereby improving the efficiency of power plant maintenance.

Description

Technical Field

[0001] This application belongs to the field of communication technology, and in particular relates to an information acquisition method, system, and power system for a power system. Background Technology

[0002] With the rapid development of the new energy industry, integrated photovoltaic and energy storage power stations, which combine photovoltaic inverters, energy storage inverters, energy storage batteries, charging piles and data acquisition devices, are being put into operation on a large scale. In order to ensure the power generation efficiency of the power station and the safety of the power grid, operation and maintenance personnel need to carry out regular equipment inspections, parameter debugging, and fault diagnosis.

[0003] In related technologies, for power plants without a networked remote operation and maintenance platform, on-site operation and maintenance operations can only be completed using local operation and maintenance equipment. This means that maintenance personnel must carry mobile phones, laptops, or dedicated local operation and maintenance equipment to the power plant site to establish a one-to-one independent communication connection with each device to perform operations such as parameter configuration, fault diagnosis, and software upgrades. However, this operation and maintenance method requires interrupting the current connection and re-establishing a new local link when switching maintenance targets. For large power plants with dispersed layouts, maintenance personnel also need to locate the physical location of each device on-site and perform close-range interaction, severely impacting the efficiency of power plant operation and maintenance. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes an information acquisition method, system, and power system for power systems to improve the operation and maintenance efficiency of power plants.

[0005] In a first aspect, this application provides an information acquisition method for a power system, applied to a near-end gateway device. The power system includes multiple power devices connected via a communication bus, and the near-end gateway device is a power device in the power system that establishes a communication connection with near-end maintenance equipment. The method includes: Receive the request message sent by the near-end maintenance equipment, and determine the power equipment under maintenance and the type of information to be collected corresponding to the power equipment under maintenance based on the request message; If the near-end gateway device and the power equipment under maintenance are different devices, the request message is forwarded to the communication bus; Receive a first reply message from the target power equipment via the communication bus; the first reply message carries target information corresponding to the type of information to be collected. The first reply message is sent to the near-end maintenance equipment.

[0006] According to the power system information collection method of this application, a request message sent by a near-end maintenance device is received, and the power equipment under maintenance and the corresponding information type to be collected are determined based on the request message. If the near-end gateway device and the power equipment under maintenance are different devices, the request message is forwarded to the communication bus. A first reply message is received from the target power equipment via the communication bus. The first reply message carries the target information corresponding to the information type to be collected. The first reply message is then sent to the near-end maintenance device. This embodiment of the application establishes a communication link in the power system. When the near-end maintenance device connects to any power equipment, that power equipment can be used as a near-end gateway device. Through the near-end gateway device's mechanism for identifying and forwarding request messages, and the feedback mechanism of the target power equipment, the near-end maintenance device can collect information from all power equipment in the power system by connecting to any power equipment. This eliminates the need for maintenance personnel to approach each power equipment individually or to repeatedly establish communication connections when switching maintenance targets, thereby improving the efficiency of power plant maintenance.

[0007] According to one embodiment of this application, the target power equipment is the power equipment under maintenance; Alternatively, the target power device is a power device in the power system that stores target node information for each power device.

[0008] In this embodiment, by providing feedback response information from the maintained power equipment, the near-end maintenance equipment can directly obtain the real-time operating data of the maintained power equipment, thereby improving the accuracy of information collection. By providing feedback response information from the power equipment that stores the target node information of each power equipment, it is not necessary to send requests to each maintained power equipment one by one and wait for a response, which reduces the number of communication interactions and bus occupancy time, and improves the efficiency of information collection.

[0009] According to one embodiment of this application, the request message carries target identification information; the target identification information includes the equipment identifier of the power equipment under maintenance and the type of information to be collected corresponding to the power equipment under maintenance; The step of determining the power equipment under maintenance and the type of information to be collected corresponding to the power equipment under maintenance based on the request message includes: The type of power equipment to be maintained and the type of information to be collected are determined based on the target identification information.

[0010] In this embodiment, by carrying target identification information in the request message, the near-end gateway device can parse the power equipment under maintenance and the type of information to be collected based on the target identification information, thereby improving the real-time performance of the request response.

[0011] According to one embodiment of this application, the request message carries a near-end maintenance identifier; the near-end maintenance identifier is used to characterize the request message as a target type near-end maintenance message. The step of determining the power equipment under maintenance and the type of information to be collected corresponding to the power equipment under maintenance based on the request message includes: Determine the power equipment under maintenance corresponding to the near-end maintenance message of the target type and the information type to be collected corresponding to the power equipment under maintenance.

[0012] In this embodiment, by carrying a near-end maintenance identifier in the request message, the near-end gateway device can identify the request message as a near-end maintenance message of the target type, thereby distinguishing it from other types of messages transmitted in the power system and improving message identification efficiency.

[0013] According to one embodiment of this application, the receiving of the first reply message from the target power device via the communication bus includes: Parse the target message intercepted from the communication bus; Determine whether the target message is the first reply message; If the target message is determined to be the first reply message, the first reply message is received.

[0014] In this embodiment, by monitoring and parsing the communication bus, and receiving the first reply message when the target message is determined to be the first reply message, the near-end gateway device can accurately identify the reply message corresponding to the current operation and maintenance request in a multi-device concurrent communication environment, thereby improving the accuracy of reply message reception.

[0015] According to one embodiment of this application, whether the target message is the first reply message is determined according to at least one of the following methods: If the target message carries the equipment identifier of the power equipment under maintenance and / or the target information encapsulated by the information type to be collected, the target message is determined to be the first reply message; If the target message carries a near-end maintenance response identifier, the target message is determined to be the first response message; the near-end maintenance response identifier is used to characterize the target message as a response message to a near-end maintenance message; If the message number of the target message is the target number, then the target message is determined to be the first reply message.

[0016] In this embodiment, by using device identifiers and / or the type of information to be collected, the near-end gateway device can accurately identify the reply message corresponding to the current operation and maintenance request content; by using the near-end operation and maintenance reply identifier, the near-end gateway device can distinguish the reply message of the near-end operation and maintenance message from other types of messages, thus improving message identification efficiency; by using the message number, the one-to-one correspondence between the request and the reply can be accurately confirmed, thus improving the accuracy of message identification.

[0017] According to one embodiment of this application, the method further includes: When the near-end gateway device and the power equipment under maintenance are the same device, collect the target information corresponding to the type of information to be collected. The collected target information is encapsulated into a second response message; The second reply message is sent to the near-end maintenance equipment.

[0018] In this embodiment, when the near-end gateway device is a power device under maintenance, the target information corresponding to the type of information to be collected is encapsulated into a second reply message and sent to the near-end maintenance device. There is no need to forward the request message to the communication bus for broadcasting or wait for other devices to reply, thereby reducing bus occupation and communication latency and improving the response efficiency of information collection.

[0019] According to one embodiment of this application, the method further includes: Broadcast a gateway announcement message to non-near-end gateway devices within the communication range; the gateway announcement message includes the device identifier of the near-end gateway device.

[0020] In this embodiment, by broadcasting a gateway announcement message carrying the identifier of the near-end gateway device to non-near-end gateway devices within the communication range, other power devices within the communication range can learn about the current near-end gateway access point, thereby improving the efficiency of information transmission.

[0021] Secondly, this application provides an information acquisition system for a power system, including a power system and near-end maintenance equipment; The power system includes multiple power devices connected via a communication bus, and the power device in the power system that establishes a communication connection with the near-end maintenance equipment is a near-end gateway device. The near-end gateway device is used to execute the above-mentioned power system information collection method.

[0022] According to the power system information acquisition system of this application, the system receives request messages sent by near-end maintenance equipment and determines the power equipment under maintenance and the corresponding information type to be collected based on the request messages. When the near-end gateway device and the power equipment under maintenance are different devices, the request message is forwarded to the communication bus. The system receives a first reply message from the target power equipment via the communication bus. The first reply message carries the target information corresponding to the information type to be collected. The first reply message is then sent to the near-end maintenance equipment. This embodiment of the application establishes a communication link in the power system. When the near-end maintenance equipment connects to any power equipment, that power equipment can be used as a near-end gateway device. Through the near-end gateway device's mechanism for identifying and forwarding request messages, and the feedback mechanism of the target power equipment, the near-end maintenance equipment can collect information from all power equipment in the power system by connecting to any power equipment. This eliminates the need for maintenance personnel to approach each power equipment individually or to repeatedly establish communication connections when switching maintenance targets, thereby improving the efficiency of power plant maintenance.

[0023] Thirdly, this application provides a power system including multiple power devices connected via a communication bus, wherein the power device in the power system that establishes a communication connection with the near-end maintenance device is a near-end gateway device; The near-end gateway device is used to execute the above-mentioned power system information collection method.

[0024] Fourthly, this application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the aforementioned information acquisition method for a power system.

[0025] Fifthly, this application provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-described information acquisition method for a power system.

[0026] Sixthly, this application provides a chip, which includes a processor and a communication interface, the communication interface being coupled to the processor, and the processor being used to run programs or instructions to implement the above-mentioned information acquisition method for power systems.

[0027] In a seventh aspect, this application provides a computer program product, including a computer program that, when executed by a processor, implements the above-described information acquisition method for a power system.

[0028] The above-described one or more technical solutions in the embodiments of this application have at least one of the following technical effects: According to the power system information collection method of this application, a request message sent by a near-end maintenance device is received, and the power equipment under maintenance and the corresponding information type to be collected are determined based on the request message. If the near-end gateway device and the power equipment under maintenance are different devices, the request message is forwarded to the communication bus. A first reply message is received from the target power equipment via the communication bus. The first reply message carries the target information corresponding to the information type to be collected. The first reply message is then sent to the near-end maintenance device. This embodiment of the application establishes a communication link in the power system. When the near-end maintenance device connects to any power equipment, that power equipment can be used as a near-end gateway device. Through the near-end gateway device's mechanism for identifying and forwarding request messages, and the feedback mechanism of the target power equipment, the near-end maintenance device can collect information from all power equipment in the power system by connecting to any power equipment. This eliminates the need for maintenance personnel to approach each power equipment individually or to repeatedly establish communication connections when switching maintenance targets, thereby improving the efficiency of power plant maintenance.

[0029] In some embodiments, by providing feedback response information from the maintained power equipment, the near-end maintenance equipment can directly obtain the real-time operating data of the maintained power equipment, thereby improving the accuracy of information collection. By providing feedback response information from the power equipment that stores the target node information of each power equipment, it is not necessary to send requests to each maintained power equipment one by one and wait for a response, which reduces the number of communication interactions and bus occupancy time, and improves the efficiency of information collection.

[0030] In some embodiments, by carrying target identification information in the request message, the near-end gateway device can parse the power equipment under maintenance and the type of information to be collected based on the target identification information, thereby improving the real-time performance of the request response.

[0031] In some embodiments, by carrying a near-end maintenance identifier in the request message, the near-end gateway device can identify the request message as a near-end maintenance message of the target type, thereby distinguishing it from other types of messages transmitted in the power system and improving message identification efficiency.

[0032] In some embodiments, by listening to and parsing messages on the communication bus, and receiving the first reply message when the target message is determined to be the first reply message, the near-end gateway device can accurately identify the reply message corresponding to the current operation and maintenance request in a multi-device concurrent communication environment, thereby improving the accuracy of reply message reception.

[0033] In some embodiments, the device identifier and / or the type of information to be collected enable the near-end gateway device to accurately identify the reply message corresponding to the current operation and maintenance request content; the near-end operation and maintenance reply identifier enables the near-end gateway device to distinguish the reply message of the near-end operation and maintenance message from other types of messages, thereby improving the message identification efficiency; and the message number enables the accurate confirmation of the one-to-one correspondence between the request and the reply, thereby improving the accuracy of message identification.

[0034] In some embodiments, when the near-end gateway device is a power device under maintenance, the target information corresponding to the type of information to be collected is encapsulated into a second reply message and sent to the near-end maintenance device. This eliminates the need to forward the request message to the communication bus for broadcasting or wait for a reply from other devices, thereby reducing bus occupancy and communication latency and improving the response efficiency of information collection.

[0035] In some embodiments, by broadcasting a gateway announcement message carrying the identifier of the near-end gateway device to non-near-end gateway devices within the communication range, other power devices within the communication range can be informed of the current near-end gateway access point, thereby improving the efficiency of information transmission.

[0036] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a flowchart illustrating the information collection method for a power system provided in an embodiment of this application; Figure 2 This is one of the schematic diagrams of communication connection scenarios between power systems provided in the embodiments of this application; Figure 3 This is the second schematic diagram of a communication connection scenario between power systems provided in the embodiments of this application; Figure 4 This is the third schematic diagram of a communication connection scenario between power systems provided in the embodiments of this application; Figure 5 This is the fourth schematic diagram of a communication connection scenario between power systems provided in the embodiments of this application; Figure 6 This is a schematic diagram of the structure of the information acquisition device for a power system provided in the embodiments of this application; Figure 7 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0040] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0041] The following description, in conjunction with the accompanying drawings, details the information collection method, system, and power system for the power system provided in this application through specific embodiments and application scenarios.

[0042] The power system information collection method provided in this application can be widely applied to various power systems related to power production, transmission, distribution, and monitoring and control, including new energy power generation systems, traditional power distribution systems, power storage systems, and integrated energy management systems. New energy power generation systems can include photovoltaic grid-connected power generation systems, wind power grid-connected power generation systems, and integrated photovoltaic-storage-charging systems. These power systems typically contain a large number of distributed devices, requiring maintenance personnel to regularly conduct equipment inspections, parameter adjustments, and fault diagnosis, collecting relevant information about the power equipment. Traditional power distribution systems can include urban distribution network systems and industrial park distribution systems, involving the collection of information from equipment such as distribution switches, ring main units, and distribution transformer monitoring equipment. Of course, it can also be applied to other power systems, and this application does not limit this application.

[0043] The power system information collection method provided in this application can be widely applied to various scenarios requiring power equipment information collection, such as routine operation and maintenance scenarios, including periodic parameter inspections of urban power distribution network equipment and routine collection of operating status information of energy storage power station equipment; it can also be applied to fault diagnosis scenarios, enabling rapid acquisition of equipment fault alarm information and historical operating data when power equipment malfunctions; and it can also be applied to batch inspection scenarios, such as centralized information collection and verification of distributed photovoltaic inverters within a region. Of course, it can also be applied to other scenarios requiring power equipment information collection, which this application does not limit.

[0044] The information acquisition method for a power system provided in this application embodiment allows power equipment in the power system to be connected via a communication bus. The communication bus can be in the form of Fast Ethernet (FE) network cable, Wireless Fidelity Mesh (WIFI-MESH), or a hybrid network of FE and WIFI-MESH. Other communication connection methods adapted to the power system can also be used, such as RS-485 bus, 5G wireless communication networking, etc., and this application embodiment does not limit the specific methods used.

[0045] The information collection method for power systems provided in this application embodiment can be executed by an electronic device or a functional module or entity in an electronic device that can implement the information collection method for power systems. The electronic device mentioned in this application embodiment can be a near-end gateway device, which is any power device in the power system that establishes a communication connection with near-end operation and maintenance equipment. The following uses an electronic device as the execution subject to illustrate the information collection method for power systems provided in this application embodiment.

[0046] like Figure 1 As shown, the information collection method of this power system includes steps 110, 120, 130 and 140.

[0047] Step 110: Receive the request message sent by the near-end maintenance equipment, and determine the power equipment under maintenance and the type of information to be collected corresponding to the power equipment under maintenance based on the request message.

[0048] In this embodiment of the application, the near-end maintenance device is a terminal device operated by maintenance personnel. For example, the near-end maintenance device can be a mobile phone, tablet computer, computer, wearable device, etc.

[0049] Near-end maintenance equipment can establish communication connections with power equipment in the power system via wired means, such as Ethernet or RS485, or via wireless means, such as hotspot APs (Access Points), FE cables, WIFI-MESH, FE or WIFI forwarding of network routers.

[0050] In this embodiment of the application, any power device in the power system that establishes a communication connection with the near-end maintenance equipment is a near-end gateway device. Through the near-end gateway device, the near-end maintenance equipment can obtain relevant information about any power device.

[0051] In one example, the application of power system information acquisition methods to a multi-parallel inverter photovoltaic system is taken as an example, such as... Figure 2 As shown, a multi-parallel inverter photovoltaic system includes multiple photovoltaic inverters connected via FE network cables. Each inverter has an AP hotspot function, allowing near-end maintenance devices such as a mobile app to connect to the AP hotspot of any inverter for comprehensive near-end maintenance of the entire system. The inverter connected to the mobile app serves as the near-end gateway device.

[0052] like Figure 3 As shown, a multi-parallel inverter photovoltaic system includes multiple photovoltaic inverters connected via a WiFi-Mesh network. Each inverter has an AP hotspot function, and near-end maintenance equipment such as a mobile app can connect to the AP hotspot of any inverter to perform near-end maintenance of the entire system.

[0053] like Figure 4 As shown, a multi-parallel inverter photovoltaic system includes multiple photovoltaic inverters. The inverters are connected via a hybrid Ethernet (FE) and WiFi connection. Communication between any two inverters can be achieved using at least one of FE and WiFi-Mesh. Each inverter has an access point (AP) hotspot function, allowing near-end maintenance equipment such as a mobile app to connect to the AP hotspot of any inverter for near-end maintenance of the entire system.

[0054] like Figure 5 As shown, a multi-parallel inverter photovoltaic system includes multiple photovoltaic inverters connected via Ethernet cables. One inverter is connected to a router via an Ethernet cable, or at least one inverter is connected to the router via WiFi. Near-end maintenance devices include, but are not limited to, mobile phones and computers. If the near-end maintenance device is a mobile phone, it connects to the router via WiFi; if the near-end maintenance device is a computer, it can connect to the router via WiFi or an Ethernet cable. The inverter connected to the near-end maintenance device via the router is the near-end gateway device.

[0055] A request message is a data packet sent by a near-end maintenance device to a near-end gateway device when initiating an information collection request. It may include the identification information of the power equipment being maintained and an indication of the type of information to be collected. The power equipment being maintained refers to the power equipment in the power system whose information needs to be collected. This could be a power device directly connected to the communication bus, or a sub-device connected via other communication methods at a lower level. The identification information of the power equipment being maintained includes, but is not limited to, the device's unique serial number, communication IP (Internet Protocol), MAC (Media Access Control) address, physical address, and network logical address. The type of information to be collected indicates the category of information to be obtained, such as real-time operating data or historical data like voltage, current, power, temperature, and switch status.

[0056] Step 120: If the near-end gateway device and the power equipment being maintained are different devices, forward the request message to the communication bus.

[0057] In this embodiment, the near-end gateway device can parse the request message and compare its own device identifier with the identifier of the power equipment being maintained. If the identifier of the power equipment being maintained matches the device identifier of the near-end gateway device, it indicates that the near-end gateway device and the power equipment being maintained are the same device, and the near-end gateway device can collect the corresponding information stored locally and generate a reply message. If the identifier of the power equipment being maintained does not match the device identifier of the near-end gateway device, it indicates that the near-end gateway device and the power equipment being maintained are different devices, and the maintenance request is directed to other power equipment in the power system. The near-end gateway device can forward the request message to the communication bus.

[0058] The communication bus is a shared communication medium connecting various power devices in a power system, supporting both unicast and broadcast data. When the near-end gateway device is not the power device being maintained, it forwards received request messages to the communication bus via unicast or broadcast. Since the communication bus connects all power devices in the power system, each device can listen to the request messages on the communication bus and determine whether to respond to the request based on the device identifier in the request message.

[0059] By forwarding request messages, the near-end maintenance equipment can connect to any power device in the power system without establishing a direct connection with the power equipment being maintained. This enables the collection of information from each power device, including power devices directly connected to the communication bus, as well as sub-devices connected to the power equipment using other communication methods.

[0060] Step 130: Receive the first reply message from the target power equipment via the communication bus; the first reply message carries the target information corresponding to the type of information to be collected.

[0061] In some embodiments, the target power equipment can be the power equipment under maintenance. When the target power equipment listens to a request message on the communication bus, it verifies the device identifier carried in the request message. After confirming that it is the object under maintenance, it parses the type of information to be collected and collects the target information corresponding to the type of information to be collected. For example, if the type of information to be collected is voltage parameters or current parameters, real-time operating data can be collected through voltage sensors and current sensors; if the type of information to be collected is operating status identifier or fault alarm information, then locally stored operating logs, fault records, and other data are extracted. After the target information is collected, the target power equipment encapsulates the target information into a first reply message according to a preset message format and feeds the first reply message back to the communication bus. The first reply message may include fields such as the device identifier of the equipment under maintenance, the type of information to be collected, the content of the target information, and the feedback timestamp.

[0062] In this embodiment, by using feedback information from the power equipment under maintenance, the near-end maintenance equipment can directly obtain the real-time operating data of the power equipment under maintenance, thereby improving the accuracy of information collection.

[0063] In some embodiments, the target power device may be a power device that stores target node information for each power device.

[0064] In this embodiment, the power system is equipped with power equipment for storing and managing target node information of each power device. This power equipment can maintain the target node information of each power device in the power system through continuous data acquisition or periodic synchronization mechanisms, forming a target node information database. The target node information may include real-time operating data or historical data such as voltage, current, power, temperature, and switch status of each power device.

[0065] When the target power equipment listens to the request message through the communication bus, it will parse the equipment identifier and the type of information to be collected of the power equipment under maintenance in the request message, then search for the target node information of the power equipment under maintenance in the target node information database, filter out the target information corresponding to the type of information to be collected from the target node information of the power equipment under maintenance, encapsulate the target information into a first reply message according to the preset message format, and feed the first reply message back to the communication bus.

[0066] In this embodiment, the power equipment that stores the target node information of each power device sends back response information, eliminating the need to send requests to each power device under maintenance one by one and wait for a response. This reduces the number of communication interactions and bus occupancy time, and improves the efficiency of information collection.

[0067] Step 140: Send the first reply message to the near-end maintenance equipment.

[0068] In this embodiment of the application, after receiving and verifying the first reply message, the near-end gateway device can forward the first reply message to the near-end maintenance device.

[0069] After receiving the first reply message, the near-end maintenance equipment will parse the target information in the message. Maintenance personnel can judge the operating status of the power equipment under maintenance based on the target information, and promptly detect abnormalities and troubleshoot faults.

[0070] In some embodiments, if the request message includes device identifiers or other identifiers of multiple maintained power devices to indicate the need to obtain relevant information about multiple maintained power devices, the near-end gateway device can receive first response messages from each maintained power device. In this case, the near-end gateway device can either integrate multiple first response messages and then send them to the near-end maintenance device, or send the first response messages sequentially according to the time order in which they are received.

[0071] It should be noted that, in this embodiment, the near-end gateway device can be any power device in the power system that has established a communication connection with the near-end maintenance device, and the power device being maintained can be any power device in the power system. Depending on the maintenance requirements, the near-end gateway device may or may not be the power device being maintained. The near-end gateway device can forward request messages to obtain response messages from other power devices carrying target information corresponding to the type of information to be collected, or it can independently collect target information corresponding to the type of information to be collected to generate a response message.

[0072] According to the power system information collection method of this application, a request message sent by a near-end maintenance device is received, and the power equipment under maintenance and the corresponding information type to be collected are determined based on the request message. If the near-end gateway device and the power equipment under maintenance are different devices, the request message is forwarded to the communication bus. A first reply message is received from the target power equipment via the communication bus. The first reply message carries the target information corresponding to the information type to be collected. The first reply message is then sent to the near-end maintenance device. This embodiment of the application establishes a communication link in the power system. When the near-end maintenance device connects to any power equipment, that power equipment can be used as a near-end gateway device. Through the near-end gateway device's mechanism for identifying and forwarding request messages, and the feedback mechanism of the target power equipment, the near-end maintenance device can collect information from all power equipment in the power system by connecting to any power equipment. This eliminates the need for maintenance personnel to approach each power equipment individually or to repeatedly establish communication connections when switching maintenance targets, thereby improving the efficiency of power plant maintenance.

[0073] In some embodiments, the request message carries target identification information; the target identification information includes the equipment identifier of the power equipment being maintained and the type of information to be collected corresponding to the power equipment being maintained. The request message determines the power equipment under maintenance and the corresponding information to be collected, including: The type of power equipment to be maintained and the type of information to be collected are determined based on the target identification information.

[0074] In this embodiment, the target identification information carried in the request message may include the device identifier of the power equipment being maintained and the type of information to be collected corresponding to the power equipment being maintained. The near-end gateway device can parse the target identification information in the request message to determine the power equipment being maintained and the type of information to be collected.

[0075] In this embodiment, by carrying target identification information in the request message, the near-end gateway device can parse the power equipment under maintenance and the type of information to be collected based on the target identification information, thereby improving the real-time performance of the request response.

[0076] In some embodiments, the request message carries a local maintenance identifier; the local maintenance identifier is used to characterize the request message as a local maintenance message of the target type; The request message determines the power equipment under maintenance and the corresponding information to be collected, including: Determine the type of near-end maintenance message corresponding to the maintained power equipment and the type of information to be collected corresponding to the maintained power equipment.

[0077] In this embodiment, the near-end maintenance identifier is used to distinguish and identify the type of request message. In the communication environment of a power system, there may be various types of data interaction between power devices, such as periodic status reporting, alarm event notifications, remote control commands, and maintenance information collection. The near-end maintenance identifier enables the near-end gateway device to identify the type of message and distinguish it from regular data interaction messages.

[0078] The local maintenance identifier can take the form of a preset code, identifier bit, or feature field, and its value is unique and exclusive, used to represent the local maintenance message of the target type. For example, a specific identifier code (such as "01" representing the local maintenance message of the target type, and "02" representing other types of messages) can be set as the local maintenance identifier.

[0079] In some embodiments, near-end maintenance messages may include one or more types, with different types of near-end maintenance messages corresponding to different types of information to be collected and / or the devices being maintained. For example, one type of near-end maintenance message is used to obtain the operating status information of all power equipment in the power system, enabling batch inspection of all network equipment; another type of near-end maintenance message is used to obtain specific parameter information of power equipment in a local area; and yet another type of near-end maintenance message is used to obtain historical fault record information of a single power device, a local power device, or all power devices, etc.

[0080] The target type of near-end maintenance message is the type of near-end maintenance message corresponding to this request message, which can be uniquely identified by the type field or encoding value in the near-end maintenance identifier.

[0081] After receiving a request message, the near-end gateway device identifies the request message as a near-end maintenance message of the target type through the near-end maintenance identifier. Then, according to the processing rules corresponding to the near-end maintenance message of the target type, it determines the power equipment to be maintained and the type of information to be collected.

[0082] The types of near-end maintenance messages and the corresponding types of power equipment under maintenance and information to be collected can be pre-associated and stored in a data table. After the near-end gateway device identifies a near-end maintenance message of the target type, it can match it with the data table according to the target type to determine the power equipment under maintenance and the type of information to be collected.

[0083] It should be noted that including the near-end maintenance identifier in the request message is not mandatory, and the request message may also exclude the near-end maintenance identifier. The near-end maintenance equipment can identify which power equipment is being maintained based on the equipment identifier of the power equipment being maintained carried in the request message.

[0084] In this embodiment, by carrying a near-end maintenance identifier in the request message, the near-end gateway device can identify the request message as a near-end maintenance message of the target type, thereby distinguishing it from other types of messages transmitted in the power system and improving message identification efficiency.

[0085] In some embodiments, receiving a first response message from the target power device via a communication bus includes: Parse the target message intercepted from the communication bus; Determine if the target message is the first reply message; If the target message is determined to be the first reply message, the first reply message is received.

[0086] In this embodiment, the near-end gateway device can continuously monitor the data flow on the communication bus through the communication bus interface. When data transmission is detected, it receives and parses the target message monitored from the communication bus. The target message is a data message transmitted on the communication bus whose source is yet to be confirmed. The target message may be a first reply message, or it may be a regular interaction message between other power devices, an alarm message, or a broadcast notification, etc.

[0087] The near-end gateway device can identify and verify the frame header, frame trailer, and check field of the target message according to the preset communication protocol specifications, and extract key field information in the target message, such as source device address, destination device address, message type identifier, and payload data length.

[0088] After parsing the target packet, the near-end gateway device can determine whether the target packet is the first reply packet based on the key field information obtained from the parsing. For example, it checks whether the source device address in the target packet belongs to the address range of the power equipment being maintained; it checks whether the packet type identifier in the target packet corresponds to the reply packet type; it checks whether the transaction identifier or sequence number in the target packet matches the previously forwarded request packet; and it checks whether the near-end maintenance identifier in the target packet exists and is consistent with the identifier in the request packet.

[0089] The system can employ a single-dimensional check; if the check passes, the target message is identified as the first reply message. Alternatively, a combination of multi-dimensional checks can be used; if all dimensions pass, the target message is identified as the first reply message; otherwise, it is identified as other types of communication data. Through multi-dimensional checks, the near-end gateway device can accurately identify the first reply message.

[0090] In some embodiments, a time window mechanism may also be used to receive the first matching reply message within a preset time range after the request message is sent. If the target message arrives after the timeout period, even if it meets the check conditions, it is considered invalid, thereby reducing interference from expired responses.

[0091] After determining that the target message is the first reply message, the near-end gateway device can formally receive the target message as the first reply message and store it in its local buffer. After receiving the message, the near-end gateway device can stop listening for the current request message or continue listening to receive subsequent first reply messages from other maintained power equipment.

[0092] In this embodiment, by monitoring and parsing the communication bus, and receiving the first reply message when the target message is determined to be the first reply message, the near-end gateway device can accurately identify the reply message corresponding to the current operation and maintenance request in a multi-device concurrent communication environment, thereby improving the accuracy of reply message reception.

[0093] In some embodiments, whether a target message is a first reply message is determined according to at least one of the following methods: If the target message carries the equipment identifier of the power equipment being maintained and / or the target information encapsulated by the type of information to be collected, the target message is determined to be the first reply message. If the target message carries a near-end maintenance response identifier, the target message is identified as the first response message; the near-end maintenance response identifier is used to identify the target message as a response message to a near-end maintenance message; If the message number of the target message is the target number, then the target message is determined to be the first reply message.

[0094] In this embodiment, the near-end gateway device can inspect specific fields of the target message. If it finds that the target message contains a device identifier that matches the power equipment under maintenance determined in the request message, or if it finds that the target message encapsulates target information (such as voltage value, current value, temperature data, etc.) corresponding to the type of information to be collected, or if the target message contains a device identifier that matches the power equipment under maintenance determined in the request message and encapsulates target information corresponding to the type of information to be collected, then it is determined that the target message is a response to the request message, and the target message is the first reply message.

[0095] The near-end maintenance response identifier is used to identify a response message to a near-end maintenance message. The near-end maintenance response identifier can correspond to the near-end maintenance identifier in the request message or use a dedicated response type encoding. The near-end gateway device can check the header or a specific location of the target message; if a near-end maintenance response identifier is found, the target message is determined to be the first response message.

[0096] A message number is a unique sequence number or identifier used to identify a communication service. When sending a request message, the near-end gateway device can assign a unique message number as the target number. When receiving a target message, it checks whether the message number of the target message matches the target number. If they match, the target message is determined to be the first reply message to the request message.

[0097] In this embodiment, by using device identifiers and / or the type of information to be collected, the near-end gateway device can accurately identify the reply message corresponding to the current operation and maintenance request content; by using the near-end operation and maintenance reply identifier, the near-end gateway device can distinguish the reply message of the near-end operation and maintenance message from other types of messages, thus improving message identification efficiency; by using the message number, the one-to-one correspondence between the request and the reply can be accurately confirmed, thus improving the accuracy of message identification.

[0098] In some embodiments, the method further includes: When the near-end gateway device and the power equipment being maintained are the same devices, collect the target information corresponding to the type of information to be collected. The collected target information is encapsulated into a second response message; The second reply message is sent to the near-end maintenance equipment.

[0099] In this embodiment, the device identifier of the power equipment under maintenance can be extracted from the request message and compared with the device identifier of the near-end gateway device itself. If the device identifier of the power equipment under maintenance is the same as the device identifier of the near-end gateway device itself, it is determined that the near-end gateway device and the power equipment under maintenance are the same device.

[0100] In this embodiment, the near-end gateway device can acquire target information in real time by using sensors or data acquisition modules, or retrieve target information from local storage units, based on the type of information to be collected in the request message. Then, according to a preset communication protocol format, the target information is encapsulated into a second reply message, and the second reply message is sent to the near-end maintenance device through the established communication connection between the near-end gateway device and the near-end maintenance device.

[0101] In this embodiment, when the near-end gateway device is a power device under maintenance, the target information corresponding to the type of information to be collected is encapsulated into a second reply message and sent to the near-end maintenance device. There is no need to forward the request message to the communication bus for broadcasting or wait for other devices to reply, thereby reducing bus occupation and communication latency and improving the response efficiency of information collection.

[0102] In some embodiments, the method further includes: Broadcast a gateway announcement message to non-near-end gateway devices within the communication range; the gateway announcement message includes the device identifier of the near-end gateway device.

[0103] In this embodiment, non-near-end gateway devices are other power devices in the power system besides near-end gateway devices. Non-near-end gateway devices have communication capabilities and can interact with near-end gateway devices through a communication bus. However, non-near-end gateway devices have not yet established a direct communication connection with near-end maintenance devices, and therefore have not been selected as near-end gateway devices.

[0104] After the near-end gateway device establishes a communication connection with the near-end maintenance device but before the information collection process, it can broadcast a gateway announcement message to non-near-end gateway devices within the communication range, enabling non-near-end gateway devices within the communication range to obtain the identity information of the near-end gateway device.

[0105] The gateway announcement message is used to announce to other power devices within the communication range that the device is currently acting as a near-end gateway device. The gateway announcement message may include the device identifier of the near-end gateway device, enabling non-near-end gateway devices to determine which power device is currently performing gateway functions, thereby determining the target address for data forwarding or response.

[0106] Near-end gateway devices can broadcast gateway announcement messages to non-near-end gateway devices within their communication range via the communication bus. Upon receiving the gateway announcement message, a non-near-end gateway device can parse the device identifier of the near-end gateway device and update its locally maintained gateway information table for subsequent data forwarding. For example, when a non-near-end gateway device needs to report information to a near-end maintenance device or respond to a maintenance request, it can send the data to the announced near-end gateway device for forwarding.

[0107] In this embodiment, by broadcasting a gateway announcement message carrying the identifier of the near-end gateway device to non-near-end gateway devices within the communication range, other power devices within the communication range can learn about the current near-end gateway access point, thereby improving the efficiency of information transmission.

[0108] The power system information collection method provided in this application can be executed by a power system information collection device. This application uses the example of a power system information collection device executing the power system information collection method to illustrate the power system information collection device provided in this application.

[0109] This application also provides an information acquisition device for a power system.

[0110] like Figure 6 As shown, the information acquisition device for this power system includes: The first receiving module 610 is used to receive the request message sent by the near-end maintenance equipment, and determine the power equipment under maintenance and the type of information to be collected corresponding to the power equipment under maintenance based on the request message. The forwarding module 620 is used to forward request messages to the communication bus when the near-end gateway device and the power equipment being maintained are different devices. The second receiving module 630 is used to receive a first reply message fed back by the target power equipment through the communication bus; the first reply message carries target information corresponding to the type of information to be collected. The sending module 640 is used to send the first reply message to the near-end maintenance equipment.

[0111] According to the power system information acquisition device of this application, the device receives request messages sent by near-end maintenance equipment and determines the power equipment under maintenance and the type of information to be collected corresponding to the power equipment under maintenance based on the request messages. When the near-end gateway device and the power equipment under maintenance are different devices, the request message is forwarded to the communication bus. The device receives a first reply message from the target power equipment via the communication bus. The first reply message carries the target information corresponding to the type of information to be collected. The first reply message is then sent to the near-end maintenance equipment. This embodiment of the application establishes a communication link in the power system. When the near-end maintenance equipment connects to any power equipment, that power equipment can be used as a near-end gateway device. Through the near-end gateway device's mechanism for identifying and forwarding request messages, and the feedback mechanism of the target power equipment, the near-end maintenance equipment can collect information from all power equipment in the power system by connecting to any power equipment. This eliminates the need for maintenance personnel to approach each power equipment individually or to repeatedly establish communication connections when switching maintenance targets, thereby improving the efficiency of power plant maintenance.

[0112] This application also provides an information acquisition system for a power system, including a power system and near-end maintenance equipment; A power system includes multiple power devices connected via a communication bus. The power devices in the power system that establish communication connections with near-end maintenance equipment are called near-end gateway devices. The near-end gateway device is used to execute the various processes of the above-described power system information collection method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0113] This application also provides a power system, including multiple power devices connected via a communication bus, wherein the power device in the power system that establishes a communication connection with the near-end maintenance equipment is a near-end gateway device; The near-end gateway device is used to execute the various processes of the above-described power system information collection method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0114] like Figure 7As shown, this application embodiment also provides an electronic device 700, including a processor 701, a memory 702, and a computer program stored in the memory 702 and executable on the processor 701. When the program is executed by the processor 701, it implements the various processes of the above-described power system information acquisition method embodiment and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0115] Electronic devices can be the aforementioned power equipment, or components within power equipment, such as integrated circuits or chips.

[0116] This application also provides a non-transitory computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it implements the various processes of the above-described power system information acquisition method embodiments and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0117] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0118] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described information acquisition method for a power system.

[0119] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0120] This application also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described power system information acquisition method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0121] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0122] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0123] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0124] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

[0125] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0126] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A method for information acquisition in a power system, characterized in that, The method is applied to a near-end gateway device, wherein the power system includes multiple power devices connected via a communication bus, and the near-end gateway device is a power device in the power system that establishes a communication connection with near-end maintenance equipment; the method includes: Receive the request message sent by the near-end maintenance equipment, and determine the power equipment under maintenance and the type of information to be collected corresponding to the power equipment under maintenance based on the request message; If the near-end gateway device and the power equipment under maintenance are different devices, the request message is forwarded to the communication bus; Receive a first reply message from the target power equipment via the communication bus; the first reply message carries target information corresponding to the type of information to be collected. The first reply message is sent to the near-end maintenance equipment.

2. The method according to claim 1, characterized in that, The target power equipment is the power equipment being maintained; Alternatively, the target power device is a power device in the power system that stores target node information for each power device.

3. The method according to claim 1, characterized in that, The request message carries target identification information; the target identification information includes the equipment identifier of the power equipment under maintenance and the type of information to be collected corresponding to the power equipment under maintenance. The step of determining the power equipment under maintenance and the type of information to be collected corresponding to the power equipment under maintenance based on the request message includes: The type of power equipment to be maintained and the type of information to be collected are determined based on the target identification information.

4. The method according to claim 1, characterized in that, The request message carries a local maintenance identifier; the local maintenance identifier is used to identify that the request message is a local maintenance message of the target type. The step of determining the power equipment under maintenance and the type of information to be collected corresponding to the power equipment under maintenance based on the request message includes: Determine the power equipment under maintenance corresponding to the near-end maintenance message of the target type and the information type to be collected corresponding to the power equipment under maintenance.

5. The method according to claim 1, characterized in that, The first reply message received from the target power equipment via the communication bus includes: Parse the target message intercepted from the communication bus; Determine whether the target message is the first reply message; If the target message is determined to be the first reply message, the first reply message is received.

6. The method according to claim 5, characterized in that, Whether the target message is the first reply message can be determined using at least one of the following methods: If the target message carries the equipment identifier of the power equipment under maintenance and / or the target information encapsulated by the information type to be collected, the target message is determined to be the first reply message; If the target message carries a near-end maintenance response identifier, the target message is determined to be the first response message; The near-end maintenance response identifier is used to indicate that the target message is a response message to a near-end maintenance message; If the message number of the target message is the target number, then the target message is determined to be the first reply message.

7. The method according to claim 1, characterized in that, The method further includes: When the near-end gateway device and the power equipment under maintenance are the same device, collect the target information corresponding to the type of information to be collected. The collected target information is encapsulated into a second response message; The second reply message is sent to the near-end maintenance equipment.

8. The method according to claim 1, characterized in that, The method further includes: Broadcast a gateway announcement message to non-near-end gateway devices within the communication range; the gateway announcement message includes the device identifier of the near-end gateway device.

9. An information acquisition system for a power system, characterized in that, This includes power systems and near-end maintenance equipment; The power system includes multiple power devices connected via a communication bus, and the power device in the power system that establishes a communication connection with the near-end maintenance equipment is a near-end gateway device. The near-end gateway device is configured to perform the method as described in any one of claims 1-8.

10. An electric power system, characterized in that, It includes multiple power devices connected via a communication bus, and the power devices in the power system that establish a communication connection with the near-end maintenance equipment are near-end gateway devices; The near-end gateway device is configured to perform the method as described in any one of claims 1-8.

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