A Power Distribution Terminal Security Authentication Method Based on Bluetooth Operation and Maintenance

Abstract

The present invention discloses a power distribution terminal security authentication method based on Bluetooth operation and maintenance. By establishing a secure and reliable Bluetooth connection, it is used for the operation and maintenance of power distribution terminals, and is implemented in a system mainly composed of power distribution terminals, mobile terminals, distribution network encryption authentication systems, front-end servers, and database servers. Implementing the present invention can upgrade the human-machine interface and debugging methods of existing power distribution terminals, and on the basis of information security, facilitate on-site personnel to perform operations such as data browsing, device operation, report viewing, and device parameter modification on power distribution terminals. At the same time, by utilizing the portability of mobile phones and tablets, the convenience of maintenance is greatly improved, and at the same time, there is no need to add relevant hardware devices, and there is no increase in hardware costs; the efficiency and security are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of maintenance operations of distribution terminals, and particularly relates to a security authentication method for distribution terminals based on Bluetooth operation and maintenance. Background Art

[0002] In recent years, the construction of the power grid has entered a period of rapid development. The operating range of the distribution network is gradually expanding, and the corresponding distribution network monitoring and automation system has also begun to be widely used. The distribution network monitoring and automation system includes a distribution automation master station and various distribution terminals, and is an important part of the smart grid. At the same time, the applications of Android and Bluetooth have widely penetrated into various industries, and intelligentization and mobility have become the new development directions of the smart grid. Meanwhile, by accessing devices through Bluetooth, the efficiency of staff will be greatly improved.

[0003] Distribution terminals mainly refer to feeder terminals supporting pole-mounted switches on the distribution network and substation terminals supporting ring main units / switch stations. It can communicate with the master station through 101 and 104 protocols, send telemetry, tele-signaling and other data of operating equipment to the master station, and at the same time receive remote control commands from the master station and complete local protection functions. The substation terminals installed inside ring main units / switch stations can be connected to a computer through a network cable, and the device can be maintained and operated through maintenance software installed on the computer. However, for the feeder terminals installed on pole-mounted switches, maintenance personnel need to climb to high places to view data through a liquid crystal panel or connect the device through a long network cable, which brings great trouble to maintenance operations. Therefore, there is a great on-site demand for how to safely use Bluetooth to connect devices.

[0004] The security of existing devices connected through Bluetooth is poor. A fixed number of digits password is used, which is easy to be cracked, threatening the power supply reliability of users. It is even possible to invade the information channel of the master station through the substation, causing a greater range of security threats. Therefore, how to develop a Bluetooth operation and maintenance for distribution terminals with encryption authentication has become an urgent problem to be solved. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a security authentication method for distribution terminals based on Bluetooth operation and maintenance, which can improve work efficiency and security.

[0006] To solve the above technical problem, the present invention provides a security authentication method for distribution terminals based on Bluetooth operation and maintenance, which is implemented in a system including a distribution terminal, a mobile terminal, a distribution network encryption authentication system, a front-end server, and a database server. The method at least includes the following steps:

[0007] The distribution terminal reads the ID number of its internal hard encryption chip, generates a set of encrypted random numbers using the hard encryption chip, and sends them to the mobile terminal through its built-in or external Bluetooth module;

[0008] The mobile terminal sends the read ID number of the hard encryption chip and the set of encrypted random numbers to the front-end server;

[0009] The front-end server sends the ID number to the database server; and at the same time sends the set of encrypted random numbers to the network distribution encryption authentication system; the data server locates the corresponding power distribution terminal according to the ID number;

[0010] The network distribution encryption authentication system generates a set of corresponding decryption random numbers according to the set of encrypted random numbers and sends them back to the front-end server;

[0011] After receiving the decryption random numbers sent back by the network distribution encryption authentication system, the front-end server sends them back to the mobile terminal through the public wireless network; and sends the decryption random numbers to the corresponding power distribution terminal found in the data server through the wireless module or optical fiber.

[0012] After receiving the decryption random numbers sent by the front-end server, the mobile terminal uses this set of decryption random numbers to request the power distribution terminal to open Bluetooth operation and maintenance;

[0013] The power distribution terminal decides whether to open Bluetooth operation and maintenance by comparing whether the two sets of decryption random numbers are the same. When the verification is successful, the power distribution terminal opens the Bluetooth operation and maintenance function and notifies the network distribution master station.

[0014] Preferably, it further includes:

[0015] After receiving the notice of opening Bluetooth operation and maintenance, the network distribution master station remotely closes the Bluetooth operation and maintenance function of the power distribution terminal after a predetermined number of hours.

[0016] Preferably, it further includes:

[0017] The network distribution master station monitors the power distribution terminal in real time through the service channel. Once an abnormal operation is found, the Bluetooth port of the power distribution terminal is immediately closed.

[0018] Preferably, it further includes:

[0019] Maintenance personnel use the mobile terminal to connect to the device through Bluetooth and use the Bluetooth operation and maintenance software to perform maintenance operations on the power distribution terminal for debugging and maintenance of a series of products of the network distribution automation terminal.

[0020] Preferably, the steps for the maintenance personnel to perform maintenance operations on the power distribution terminal using the Bluetooth operation and maintenance software specifically include:

[0021] The mobile terminal uses the built-in Bluetooth module or uses a serial port to externally connect a Bluetooth device, opens the corresponding Bluetooth operation and maintenance software, enters the user name and password, and enters the interface of the Bluetooth operation and maintenance software after the password and user permissions are verified correctly;

[0022] The Bluetooth operation and maintenance software automatically searches for nearby Bluetooth devices that can be paired, selects the device to be debugged for encrypted pairing. After successful pairing, a connection is established and the debugging and maintenance interface is entered. Select the corresponding functions for debugging and maintenance work, mainly including data browsing, device operation, report viewing, and device parameter modification.

[0023] Implementing the embodiments of the present invention has the following beneficial effects:

[0024] The present invention relates to a power distribution terminal security authentication method based on Bluetooth operation and maintenance, which improves the existing power distribution network maintenance method. By using a mobile terminal to connect to a device via Bluetooth, the corresponding maintenance software can be conveniently used to perform maintenance operations on the device, improving work efficiency. An encryption authentication method based on the encrypted chip ID and encrypted / decrypted random numbers is used. After ensuring the legitimacy of the mobile terminal, a secure encrypted Bluetooth connection can be established with the power distribution terminal for debugging and operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a schematic diagram of the overall architecture of the power distribution terminal security authentication system based on Bluetooth operation and maintenance related to the present invention;

[0027] Figure 2 It is a schematic diagram of the security authentication process of a power distribution terminal security authentication method based on Bluetooth operation and maintenance related to the present invention;

[0028] Figure 3 It is a schematic diagram of the system architecture of the Bluetooth operation and maintenance software related to the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0030] Such as Figure 1The following shows the overall architecture diagram of the distribution terminal security authentication system based on Bluetooth operation and maintenance involved in the present invention. It mainly consists of five parts: a distribution terminal, a mobile terminal, a distribution network encryption authentication system, a front-end server, and a database server. Among them,

[0031] The distribution terminal is equipped with a hardware encryption chip and an internally or externally connected Bluetooth module. The distribution terminal is connected to the front-end server of the distribution network master station through a wireless module or optical fiber, and the distribution network encryption authentication system is connected to the front-end server.

[0032] The mobile terminal has an Internet access function, which can be a mobile phone, a tablet, etc., and is connected to the front-end server through a public wireless network.

[0033] Such as Figure 2 The following shows the schematic diagram of the security authentication process of a security authentication method for a distribution terminal based on Bluetooth operation and maintenance of the present invention. In an embodiment of the present invention, the method includes the following steps:

[0034] Step S1, the Bluetooth module of the distribution terminal reads the ID number of the hardware encryption chip and generates a set of encrypted random numbers by the hardware encryption chip, and sends them to the mobile terminal through Bluetooth.

[0035] Step S2, the mobile terminal sends the read ID number of the hardware encryption chip and a set of encrypted random numbers to the front-end server.

[0036] Step S3, the front-end server sends the ID number to the database server; and in step S5, at the same time, it sends a set of encrypted random numbers to the distribution network encryption authentication system;

[0037] Step S4, the data server finds the corresponding distribution terminal according to the ID number;

[0038] Step S6, the distribution network encryption authentication system generates a set of corresponding decrypted random numbers according to the encrypted random numbers and sends them back to the front-end server.

[0039] Step S7, after receiving the decrypted random numbers sent back by the distribution network encryption authentication system, the front-end server sends them back to the mobile terminal through the public wireless network;

[0040] Step S8, the front-end server sends them to the corresponding distribution terminal found in the data server through a wireless module or optical fiber.

[0041] Step S9, after receiving the decrypted random numbers sent by the front-end server, the mobile terminal uses this set of decrypted random numbers to request the distribution terminal to open Bluetooth operation and maintenance;

[0042] Step S10, the power distribution terminal decides whether to open the Bluetooth operation and maintenance by comparing the two sets of decrypted random numbers. When the verification is successful, the power distribution terminal opens the Bluetooth operation and maintenance function and notifies the distribution network master station. After receiving the notification of opening the Bluetooth operation and maintenance, the distribution network master station remotely closes the Bluetooth operation and maintenance function at a predetermined interval (such as 8 hours) to prevent safety hazards caused by too long opening time.

[0043] At the same time, the distribution network master station can monitor the distribution terminal in real time through the business channel. Once any abnormal operation is found, the Bluetooth port of the distribution terminal can be immediately closed. If the account is abnormal, the corresponding user ID can also be locked to prevent it from logging in.

[0044] It can be understood that in the embodiment of the present invention, the maintenance personnel use the Bluetooth connection device through the mobile terminal, and then use the Bluetooth operation and maintenance software to perform maintenance operations on the distribution terminal. The Bluetooth operation and maintenance software is mainly used for the debugging and maintenance of a series of products of the distribution network automation terminal.

[0045] In a specific example, the main method used by the Bluetooth maintenance software is as follows: Devices without built-in Bluetooth need to use a serial port to connect to Bluetooth, which makes it easy to expand the Bluetooth of existing devices. When the mobile device opens the Bluetooth operation and maintenance software App, it is necessary to enter the user name and password. After the password and user authority are verified correctly, the interface of the Bluetooth operation and maintenance software App is entered. The Bluetooth operation and maintenance software App automatically searches for nearby Bluetooth devices that can be paired, selects the device that needs to be debugged for encrypted pairing, and after the pairing is successful, establishes a connection and enters the debugging and maintenance interface, and selects the corresponding function for debugging and maintenance work. Mainly includes data browsing, device operation, report viewing, and device parameter modification;

[0046] More specifically, data browsing refers to viewing the device's action elements, device self-test, telesignaling status, soft pressure plate status, and analog quantity sampling; device operation refers to remote control, reset, restart, and manual triggering of recording of the distribution terminal; report viewing refers to viewing the action report, self-test report, displacement report, and device log of the distribution terminal; device parameter modification refers to modification of the device's equipment parameters, communication parameters, protection settings, soft pressure plates, etc.

[0047] like Figure 3 As shown, a schematic diagram of the system architecture of the Bluetooth operation and maintenance software involved in the present invention is shown. The Bluetooth maintenance software adopts a three-layer architecture model. The first layer is the interface display layer, including the main interface display information, hierarchical menu information, etc. The second layer is the data processing layer, which is responsible for parsing the data stream sent on the network to form structured data, general and extensible data, and at the same time organizes the client structured data into stream data and sends it out through the network layer. The third layer is the Bluetooth network service layer, which is used for the transmission of stream data.

[0048] The implementation of the embodiments of the present invention has the following beneficial effects:

[0049] The present invention relates to a safety authentication method for a distribution terminal based on Bluetooth operation and maintenance, which improves the existing distribution network maintenance method. By using a mobile terminal to connect to a device via Bluetooth, the corresponding maintenance software can be conveniently used to perform maintenance operations on the device, improving work efficiency. An encryption authentication method based on the encryption chip ID and encrypted / decrypted random numbers is used. After ensuring the legitimacy of the mobile terminal, a secure encrypted Bluetooth connection can be established with the distribution terminal for debugging and operation and maintenance.

[0050] The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the claims of the present invention. Therefore, any equivalent changes or modifications made without departing from the spirit disclosed by the present invention should be included within the scope of the claims of the present invention.

Claims

1. A power distribution terminal security authentication method based on Bluetooth operation and maintenance, characterized in that, It is implemented in a system including a distribution terminal, a mobile terminal, a distribution network encryption authentication system, a front-end server, and a database server. The method at least includes the following steps: The distribution terminal reads the ID number of its internal hard encryption chip, generates a set of encrypted random numbers using the hard encryption chip, and sends them to the mobile terminal through its built-in or external Bluetooth module; The mobile terminal sends the read ID number of the hard encryption chip and the set of encrypted random numbers to the front-end server; The front-end server sends the ID number to the database server; And at the same time, sends the set of encrypted random numbers to the distribution network encryption authentication system; The database server finds the corresponding distribution terminal according to the ID number; The distribution network encryption authentication system generates a set of corresponding decrypted random numbers according to the set of encrypted random numbers and sends them back to the front-end server; After receiving the decrypted random numbers sent back by the distribution network encryption authentication system, the front-end server sends them back to the mobile terminal through the public wireless network; And sends the decrypted random numbers to the corresponding distribution terminal found in the database server through the wireless module or optical fiber; After receiving the decrypted random numbers sent by the front-end server, the mobile terminal uses this set of decrypted random numbers to request the distribution terminal to open Bluetooth operation and maintenance; The distribution terminal decides whether to open Bluetooth operation and maintenance by comparing whether the two sets of decrypted random numbers are the same. When the verification is successful, the distribution terminal opens the Bluetooth operation and maintenance function and notifies the distribution network master station.

2. The method according to claim 1, characterized in that, It further includes: After receiving the notice of opening Bluetooth operation and maintenance, the distribution network master station remotely closes the Bluetooth operation and maintenance function of the distribution terminal after a predetermined number of hours.

3. The method according to claim 2, characterized in that, It further includes: The distribution network master station monitors the distribution terminal in real time through the service channel. Once an abnormal operation is found, the Bluetooth port of the distribution terminal is immediately closed.

4. The method according to claim 3, characterized in that, It further includes: The maintenance personnel use the mobile terminal to connect to the device through Bluetooth, and use the Bluetooth operation and maintenance software to perform maintenance operations on the distribution terminal to debug and maintain a series of products of the distribution network automation terminal.

5. The method according to claim 4, characterized in that, The steps for the maintenance personnel to perform maintenance operations on the distribution terminal using the Bluetooth operation and maintenance software specifically include: The mobile terminal uses the built-in Bluetooth module or uses a serial port to externally connect a Bluetooth device, opens the corresponding Bluetooth operation and maintenance software, enters the user name and password, and enters the interface of the Bluetooth operation and maintenance software after the password and user permissions are verified correctly; The Bluetooth operation and maintenance software automatically searches for nearby Bluetooth devices that can be paired, selects the device to be debugged for encrypted pairing. After the pairing is successful, a connection is established and the debugging and maintenance interface is entered, and the corresponding functions are selected for debugging and maintenance work, mainly including data browsing, device operation, report viewing, and device parameter modification.

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