CN112543424A - Autonomous edge control method for distributed smart power grid - Google Patents
Autonomous edge control method for distributed smart power grid Download PDFInfo
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- CN112543424A CN112543424A CN202011601619.XA CN202011601619A CN112543424A CN 112543424 A CN112543424 A CN 112543424A CN 202011601619 A CN202011601619 A CN 202011601619A CN 112543424 A CN112543424 A CN 112543424A
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- mobile node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/029—Location-based management or tracking services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/005—Discovery of network devices, e.g. terminals
Abstract
The invention discloses an autonomous edge control method for a distributed smart power grid, which comprises the following steps: 1, using a platform framework consisting of a plurality of mobile nodes, a plurality of terminal nodes and a cloud server; 2, the mobile node is used as a transfer connection terminal node and a cloud server; 3, the terminal node uploads data to a cloud server through a secure socket protocol, a transport layer security protocol and a link layer security protocol encryption line; and 4, if the connection is interrupted, re-acquiring the GPS position change of the mobile node. The invention can improve the network security and the data transmission efficiency of the terminal node and the cloud server.
Description
Technical Field
The invention relates to a distributed power grid, intelligent edge equipment and an autonomous control technology, in particular to an autonomous edge control method for a distributed intelligent power grid.
Background
As power distribution systems move toward decentralized, millions of devices, including transformers, capacitors, switches, photovoltaic inverters, and loads, etc., requiring coordinated power grids to provide queriable status data, solutions traditionally used for power generation and transmission systems are not necessarily suitable for power distribution systems, which may be located in remote areas with poor connectivity, which makes connecting large numbers of devices to cloud servers very complicated and expensive, because of the apparent difference in facility categories.
The existing power distribution system cloud connection method is a distributed control method based on multilayer intelligent communication, a platform form taking a terminal facility as a center is adopted, the platform is used for connecting field equipment and a cloud server through ZigBee (also called purple bee, which is a wireless internet protocol for low-speed short-distance transmission) and a network base station, the connected equipment is indicated to take action through a distributed controller, and energy consumption control is realized by combining an intelligent system, and the consumption of data flow can be reduced.
However, this method (i.e., the existing method for connecting the power distribution system facilities to the cloud) depends on the infrastructure construction, and cannot efficiently handle the scenes of remote geographic locations and numerous devices in the power distribution system, so the existing technical method has more limitations in practical application, complex structure, high cost, low return on investment, and lacks of a strict security protection method.
The existing method for connecting the power distribution system facilities and the cloud server is not flexible in design, different terminal devices and network base stations cannot be effectively compatible, and time cost is increased due to the fact that the different terminal devices and the network base stations need to be independently arranged.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides an autonomous edge control method for a distributed smart grid, so that a mobile node supporting Bluetooth is used as a transfer node to connect a terminal node and a cloud server to realize data transmission, and the network safety problem of the system in long-period operation is solved, so that the stability of data transmission of a power grid terminal facility and the cloud server is improved, the actual requirement of rapidness and accuracy is met, and the operation efficiency of the system is ensured.
The invention adopts the following technical scheme for solving the technical problems:
the invention relates to an autonomous edge control method for a distributed smart grid, which is characterized by being applied to a network environment consisting of a cloud server, a plurality of mobile nodes and a plurality of terminal nodes and comprising the following steps:
step 1, acquiring the GPS position of any mobile node in real time;
step 2, judging whether the GPS position changes, if so, the mobile node sends a query instruction with the GPS position to the server by using a line encrypted by an SLL protocol and a TLS protocol, otherwise, directly executing step 6;
step 3, the mobile node judges whether the server is accessed normally, if so, step 4 is executed, otherwise, step 1 is returned;
step 4, the cloud server returns the own Bluetooth physical address, the identity verification information and the downlink data of each terminal node nearby according to the query instruction;
step 5, the mobile node receives the data returned by the cloud server and stores the data in the local area;
step 6, the mobile node scans whether a terminal node with a Bluetooth transceiver exists nearby, if so, the mobile node scans information data from the Bluetooth transceiver of the terminal node and stores a Bluetooth physical address in the Bluetooth transceiver of the terminal node corresponding to each information data, otherwise, the step 1 is executed;
step 7, the mobile node judges whether the Bluetooth physical address scanned from the Bluetooth transceiver of the terminal node is matched with the Bluetooth physical address received from the cloud server; if the mobile node is matched with the matched terminal node, the mobile node establishes Bluetooth connection with the matched terminal node, and step 9 is executed; otherwise, executing step 8;
step 8, the mobile node judges whether the matching time is overtime, if yes, the step 1 is executed, otherwise, the step 6 is executed;
and 9, the matched terminal equipment judges whether the Bluetooth connection with the mobile node is interrupted, if the connection is interrupted, the step 1 is returned, otherwise, the terminal equipment performs data transmission with the mobile node by using the line encrypted by the LLS protocol.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention provides a method for connecting a power distribution system terminal facility and a cloud server based on autonomous edge control, and realizes data connection between the cloud server and the terminal facility by scanning and connecting the mobile node with the nearby terminal facility, thereby improving the operating efficiency of the power distribution system in remote areas, having strong equipment compatibility by using Bluetooth for connection, greatly improving the flexibility of the system and reducing the cost, and realizing the safe transmission of data information by adopting different data encryption measures among different lines.
2. According to the invention, the mobile node can automatically forward the data packet to the cloud server and encrypt the communication path, so that the safe and efficient transmission of information data is realized;
3. the terminal node of the invention uses the low-cost high-efficiency Bluetooth transceiver to connect with the mobile node, thereby reducing the cross-region connection cost to the maximum extent.
Drawings
FIG. 1 is a flow chart of an autonomous edge control method for a distributed smart grid according to the present invention;
fig. 2 is a system communication timing diagram of the autonomous edge control method for the distributed smart grid according to the present invention.
Detailed Description
In this embodiment, an autonomous edge control method for a distributed smart grid is applied to a network environment including a cloud server, a plurality of mobile nodes, and a plurality of terminal nodes, as shown in fig. 1 and fig. 2, and includes the following steps:
step 1, acquiring the GPS position of any mobile node in real time;
step 2, judging whether the GPS position changes, if so, randomly generating a secret key encrypted by a cloud server public key by the mobile node by using a Secure socket protocol (SSL) and a Transport Layer Security protocol (TLS), sending the secret key to the server, and only decrypting by using a private key of the mobile node to generate a protocol encryption circuit for Secure connection, sending a query instruction with the GPS position to the server by the mobile node by using the circuit encrypted by the protocol, otherwise, directly executing the step 6;
step 3, the mobile node judges whether the server is normally accessed, if so, the step 4 is executed, otherwise, the step 1 is returned;
step 4, the cloud server returns the Bluetooth physical address, the identity verification information and the downlink data of each terminal node nearby according to the query instruction, and the identity authentication of the mobile node on each terminal node nearby is completed to ensure accurate connection;
step 5, the mobile node receives the data returned by the cloud server and stores the data in the local to ensure the flexibility of local data calling and the transmission safety;
step 6, the mobile node scans whether a terminal node with a Bluetooth transceiver exists nearby according to the identity verification information returned by the cloud server and the downlink data of the terminal node, if so, the mobile node scans information data from the Bluetooth transceiver of the nearby terminal node and stores a Bluetooth physical address in the Bluetooth transceiver of the terminal node corresponding to each information data, otherwise, the step 1 is executed;
step 7, the mobile node judges whether the Bluetooth physical address scanned from the Bluetooth transceiver of the nearby terminal node is matched with the Bluetooth physical address received from the cloud server, if so, the mobile node establishes Bluetooth connection with the matched terminal node, and step 9 is executed; otherwise, executing step 8;
step 8, the mobile node judges whether the matching time exceeds the set specific time period t allowing matching, if yes, the step 1 is executed, otherwise, the step 6 is executed;
and 9, judging whether the Bluetooth connection between the matched terminal device and the mobile node is interrupted or not, if the connection is interrupted (for example, when the mobile node moves out of the coverage area of the cloud server), returning to the step 1, otherwise, performing data transmission between the line encrypted by using a Link Layer Security protocol (LLS) and the mobile node by the terminal device, specifically, encrypting data before the data is transmitted for a communication Link between the mobile node and the terminal node, decrypting the received data at each node, and then performing encrypted transmission on a message by using a key of the next Link, thereby providing Security guarantee for the transmitted data.
Claims (1)
1. An autonomous edge control method for a distributed smart grid is characterized by being applied to a network environment consisting of a cloud server, a plurality of mobile nodes and a plurality of terminal nodes and comprising the following steps:
step 1, acquiring the GPS position of any mobile node in real time;
step 2, judging whether the GPS position changes, if so, the mobile node sends a query instruction with the GPS position to the server by using a line encrypted by an SLL protocol and a TLS protocol, otherwise, directly executing step 6;
step 3, the mobile node judges whether the server is accessed normally, if so, step 4 is executed, otherwise, step 1 is returned;
step 4, the cloud server returns the own Bluetooth physical address, the identity verification information and the downlink data of each terminal node nearby according to the query instruction;
step 5, the mobile node receives the data returned by the cloud server and stores the data in the local area;
step 6, the mobile node scans whether a terminal node with a Bluetooth transceiver exists nearby, if so, the mobile node scans information data from the Bluetooth transceiver of the terminal node and stores a Bluetooth physical address in the Bluetooth transceiver of the terminal node corresponding to each information data, otherwise, the step 1 is executed;
step 7, the mobile node judges whether the Bluetooth physical address scanned from the Bluetooth transceiver of the terminal node is matched with the Bluetooth physical address received from the cloud server; if the mobile node is matched with the matched terminal node, the mobile node establishes Bluetooth connection with the matched terminal node, and step 9 is executed; otherwise, executing step 8;
step 8, the mobile node judges whether the matching time is overtime, if yes, the step 1 is executed, otherwise, the step 6 is executed;
and 9, the matched terminal equipment judges whether the Bluetooth connection with the mobile node is interrupted, if the connection is interrupted, the step 1 is returned, otherwise, the terminal equipment performs data transmission with the mobile node by using the line encrypted by the LLS protocol.
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| CN112543424B (en) | 2022-04-26 |
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