CN-121985311-A - Intelligent installation and intelligent maintenance system for power station based on wireless self-organizing network

CN121985311ACN 121985311 ACN121985311 ACN 121985311ACN-121985311-A

Abstract

The invention discloses a wireless self-organizing network-based power station intelligent installation and intelligent maintenance system, which relates to the technical fields of power station operation and maintenance technology and industrial Internet, and comprises a plurality of node devices, wherein the node devices are used for data acquisition, edge calculation, wireless networking and data multi-hop transmission forwarding, the plurality of node devices form a system through wireless networking, the system has a distributed multi-copy data storage function and is applied to power station intelligent installation and intelligent maintenance, a decentralised distributed network is adopted in the networking mode of the plurality of node devices in the system, a dynamic source routing protocol and an active bridging protocol are used among the node devices, and the protocol is automatically switched according to the number of the node devices in the network so as to form a Mesh network. The invention does not need a base station, a wireless router, a switch and other network equipment, and can self-organize the network to transfer and share the data in the network by taking the network as the acquisition equipment and the network communication node equipment.

Inventors

ZHAO ZHENGLEI
LIU YUNPING
ZHOU JUNCHANG
LUO XIANLI
LIU HAOYANG
CHEN JUELIANG

Assignees

东方电气集团东方电机有限公司

Dates

Publication Date: 20260505
Application Date: 20260116

Claims (10)

1. Intelligent installation and intelligent maintenance system of power station based on wireless self-organizing network, its characterized in that includes: The system comprises a plurality of node devices, a wireless networking system, a wireless network system and a wireless network system, wherein the node devices are used for data acquisition, edge calculation, wireless networking and data multi-hop transmission and forwarding; The networking mode of a plurality of node devices in the system adopts a decentralised distributed network, a dynamic source routing protocol and an active bridging protocol are used among the node devices, the network protocol is automatically switched according to the number of the node devices in the network to form a Mesh network, when the number of the node devices in the network is smaller than a set value, the dynamic source routing protocol is used, and when the number of the node devices in the network is larger than or equal to the set value, the active bridging protocol is used.
2. The intelligent installation and intelligent maintenance system of a power station based on a wireless ad hoc network according to claim 1, wherein said node means comprises a general node means and a core node means; The common node device is used for local data acquisition and calculation and responds to a data request of the core node device; The core node device is used for collecting and calculating local data, broadcasting data requests to all other node devices, receiving and summarizing data of adjacent/communicable node devices, and maintaining a core node device routing table and a network state table together with other core node devices in the network.
3. The intelligent installation and maintenance system of a power station based on a wireless self-organizing network as set forth in claim 1, wherein the data synchronization is performed between the node devices, and the data synchronization includes that file data of a non-measuring point class among the node devices is data synchronized through asynchronous network programming and REST interfaces, so that files under the working path of the node devices are synchronized to other node devices, the IP of the original node device of the file is used as the path name of the file under the new node device, the data file is deleted after a preset time in a first-in first-out principle, the source file of the original node device is named < original file name > < original file suffix > < synchronization completion date > t < synchronization completion time >. Bak, and the data file is deleted after the preset time.
4. The intelligent installation and maintenance system of power station based on wireless self-organizing network as set forth in claim 1, wherein when new node device accesses network, it automatically completes network by self-organizing network specific broadcast perception mechanism, periodically transmits data frame containing self MAC address and link quality after node device starts, analyzes data frame after surrounding communicable node device receives, recognizes new node device existence, records its position information in locally maintained route mapping table, and returns self network state, new node device blends into existing topology to form multi-hop interconnected network structure.
5. The intelligent installation and maintenance system of power station based on wireless self-organizing network as set forth in claim 1, wherein in the data transmission stage, the network realizes self-organizing route by optimal route election algorithm, each node device continuously monitors link quality with neighbor and packages quality data in data frame for broadcasting, when node device needs to send data, dynamically selecting route with few hops and high stability according to link quality information shared by node device of whole network to send data.
6. The intelligent installation and maintenance system of a power station based on a wireless self-organizing network as claimed in claim 1, wherein when a node device fails, its neighbor node device does not receive the data frame of the node device within a preset time, automatically determines link interruption, and immediately updates a local routing table to reject the failed node device from available paths, and simultaneously, peripheral node devices trigger the recalculation of the whole network route by broadcasting new link state information, and the remaining node devices rapidly negotiate an alternative path.
7. The intelligent installation and maintenance system of a power station based on a wireless self-organizing network as set forth in claim 1, wherein the network optimizes network performance by adaptive broadcast suppression by dynamically adjusting the frequency of transmission of data frames when the node device density is too high, and simultaneously, the node device automatically shunts a portion of traffic to a neighbor node device with a lower load based on real-time load balancing link pressure.
8. The intelligent installation and maintenance system of power station based on wireless self-organizing network as claimed in claim 2, wherein each node device performs node information interaction through Socket broadcasting mechanism, when the core node device is connected to the network, broadcasts its own IP/MAC address, updates network time, and obtains the routing mapping table of the core node device in the broadcasted network, when the common node device is connected to the network, receives the broadcast to obtain IP/MAC address of the core node device in the network, and performs system level time synchronization with the upstream core node device by means of NTP while performing application level light time synchronization based on RESTfulAPI interface.
9. The wireless ad hoc network-based power station intelligent installation and intelligent maintenance system of claim 2, wherein said system subscribes to network information and processes data synchronization tasks in a multithreaded manner, wherein said multithreading comprises: a time synchronization thread for continuously outputting the synchronization time of the node device from the core node device or the network; a shared cache creation thread responsible for creating a shared cache for storing and managing data; a broadcast receiving thread, which continuously and asynchronously receives network broadcast information and updates a routing mapping table in real time no matter the type of the node device; The inter-process data synchronization thread is used for continuously synchronizing data with other processes, so that the data consistency among different processes is ensured; a route updating thread, wherein only a core node device runs the thread, periodically broadcasts route information and updates the route tables of other node devices in the network; a data acquisition thread for continuously acquiring the data of the node device and storing the data into a local cache; a data transmission thread for continuously transmitting data to other node devices according to the information in the routing table; An interface release thread, namely only the core node device runs the thread, and releases FastAPI interfaces for uploading data, and other node devices or external systems upload data to the core node device through the interfaces; and the cache management thread continuously monitors whether broadcast information is not received for a long time, and if so, releases the cache resources.
10. The intelligent installation and maintenance system for a power station based on a wireless ad hoc network according to claim 2, wherein the system comprises a plurality of sub-networks, each sub-network comprises a plurality of common node devices and a plurality of core node devices, the common node devices preferentially send data to the core node devices of the sub-networks, and when the core node devices of the sub-networks are offline, the common node devices transmit data to the core node devices of the other sub-networks.

Description

Intelligent installation and intelligent maintenance system for power station based on wireless self-organizing network Technical Field The invention relates to the technical fields of power station operation and maintenance technology and industrial Internet, in particular to a power station intelligent installation and intelligent maintenance system based on a wireless self-organizing network. Background The core of the development of the intelligent installation and intelligent overhaul business of the power station is the acquisition, transmission, storage and application of installation overhaul data, and at present, the data acquisition mainly uses intelligent tools, and the equipment often has the functions of A/D conversion and data output, and needs to synchronize data online by wireless routing equipment in a connection environment or manually upload the data in a storage card off line after the field work is completed. In the individual installation sites or most inspection paths, the situation that network signals are poor or even no network coverage exists often happens, so that service personnel cannot acquire data generated in the process of overhauling or inspecting the other party in time often. The hardware erection of the wireless self-organizing network is realized by constructing a Mesh network by wifi or Bluetooth, for example, "CN206471917U, a substation intelligent inspection device based on the Mesh network" describes that the Mesh wireless self-organizing network technology is used for carrying out network signal coverage on a weak network environment, and node equipment in the Mesh wireless self-organizing network is only used as communication relay equipment for networking, has no capabilities of data acquisition, edge analysis and the like, and does not provide application support such as distributed data storage, cache forwarding and the like for top-level application. The wireless self-organizing network is realized by using a dynamic source routing protocol (DynamicSourceRouting) or an active bridging protocol (BATMAN-ADV) at a software level, such as CN116647649A, which is suitable for a power transmission line self-organizing network monitoring system in a non-network area, a scheme for constructing the self-organizing network by using a self-organizing network technology which is not specified is described, the description of a specific technology used by the self-organizing network is lacking, and the problems possibly caused by different self-organizing network technologies are not analyzed and designed in a targeted manner. For example, a network node using an active bridge protocol will broadcast data frames to the whole network at regular time, so that more network resources are consumed to a certain extent, while a network using a dynamic source routing protocol only performs route discovery when data needs to be sent, although a certain network resource can be saved, a longer route discovery delay is generated relative to the former. Most self-organizing networks perform route discovery through multiple hops, and the purpose of the self-organizing networks is to find an optimal path between a sending end and a receiving end, for example, CN212009566U is provided, a power distribution room full-perception monitoring operation and maintenance system based on a wireless multi-hop network is provided, a basic application scene of uploading local equipment to a data center based on multiple hops is provided, the design of upper-layer application of multi-copy distributed storage of data in the network is lacking, and meanwhile, the dynamic redundancy function of the self-organizing networks is not utilized, and the multi-hop forwarding of the data is realized while a redundant communication link is realized by combining network multiple hops. Disclosure of Invention In order to overcome the defects in the prior art, the invention discloses a power station intelligent installation and intelligent maintenance system based on a wireless self-organizing network, the invention does not need a base station, a wireless router, a switch and other network equipment, and can self-organize the network to transfer and share the data in the network by taking the network as the acquisition equipment and the network communication node equipment. In order to achieve the above purpose, the present invention adopts the technical scheme that: Intelligent installation and intelligent maintenance system of power station based on wireless self-organizing network includes: The system comprises a plurality of node devices, a wireless networking system, a wireless network system and a wireless network system, wherein the node devices are used for data acquisition, edge calculation, wireless networking and data multi-hop transmission and forwarding; The networking mode of a plurality of node devices in the system adopts a decentralised distributed network, a dynamic source routing protocol and an