A plug-and-play method for power distribution terminal equipment applied to intelligent fusion terminal

Abstract

The present invention discloses a plug-and-play method for power distribution terminal equipment applied to intelligent fusion terminals, comprising the following steps: Step 1, the terminal configures the device types allowed to access the network by CCO through the extended 376.2 message. Step 2, after the STA is powered on, the device address is obtained and different device types are distinguished. Step 3, the CCO initiates STA networking through the central beacon, and the STA sends a network association request according to its own device type. Step 4, the CCO determines the device type in the association request and actively reports it to the intelligent fusion terminal. Step 5, the intelligent fusion terminal starts household change identification and sorts out the equipment in this area according to the reported archive. Step 6, the terminal reads the location description information of the terminal device and determines the change status of the terminal device. Step 7, the collection class APP detects the change of the archive configuration file, updates it to the data center, and uploads the terminal device data to the distribution automation master station. Step 8, start the topology identification function, perform topology identification on the changed equipment, and realize the automation of terminal device access.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution network automation, and in particular to a plug-and-play method for power distribution terminal equipment applied to an intelligent fusion terminal. Background Art

[0002] The existing low-voltage substations usually have marketing concentrators installed. During the construction of marketing and distribution integration, there are two terminals, marketing and distribution, coexisting in the same distribution substation. This solution aims to solve the problem of how to independently manage the network identification, file management and business realization of distribution network equipment such as smart circuit breakers, LTUs, SVGs, AUCs, and smart capacitors when the integrated terminal is installed, without affecting the normal operation of the original marketing concentrator substation; at the same time, it can meet the unified management requirements of distribution network equipment and marketing equipment after SCU switching, and truly realize the plug-and-play of distribution network equipment. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the problems existing in the above-mentioned prior art and provide a plug-and-play method for distribution terminal equipment applied to intelligent fusion terminals. By automatically networking the distribution terminal equipment, the automatic addition and replacement status recognition function of distribution network equipment such as intelligent circuit breakers, LTUs, SVGs, AUCs, and intelligent capacitors is realized. In combination with the terminal equipment self-description information and topology recognition technology, the file status combing is completed to realize the communication function between the distribution network equipment and the distribution automation master station.

[0004] To achieve the above-mentioned object of the invention, the present invention adopts the following technical scheme.

[0005] A plug-and-play method for a power distribution terminal device applied to an intelligent converged terminal comprises the following steps:

[0006] Step 1: After the CCO is powered on, the substation terminal configures the device types allowed to access the network by extending the 376.2 message;

[0007] Step 2: After STA is powered on, it obtains the device address and distinguishes different device types;

[0008] Step 3: CCO initiates STA networking through the central beacon. After receiving the central beacon, the STA sends a network association request based on its own device type;

[0009] Step 4: CCO identifies the device type in the association request, allows only the configured device type to access the network, and replies to the association confirmation command, obtains the device registration file, and actively reports it to the intelligent fusion terminal;

[0010] Step 5: Start household change identification: The intelligent fusion terminal configures the STA characteristic current sending time in the registration file according to the CCO reporting terminal equipment file, starts household change identification and sorts out the files of this area; the terminal sends the files that do not belong to this area to the CCO, and the CCO sends an offline indication to the STA that does not belong to this area and adds it to the blacklist. For the equipment that belongs to this area, it is added to the file configuration file of the intelligent fusion terminal;

[0011] Step 6: Determine the terminal device change status: For the terminal device file newly reported by the CCO, the intelligent fusion terminal actively reads the location description information of the terminal device and compares it with the file configuration file, and determines the terminal device change status based on the location description information;

[0012] Step 7: The collection APP detects changes in the file configuration file, sorts out the terminal device files, updates them synchronously to the data center, communicates with the terminal device, and uploads the terminal device data to the distribution automation master station;

[0013] Step 8: After the device profile is synchronized and updated to the data center, start the topology recognition function to perform topology recognition on the changed end devices to achieve fully automated end device access.

[0014] Furthermore, the extended 376.2 message format in step 1 is as follows:

[0015] Downlink message (AFN = 05Fn = F101) sets the type of device allowed to access the network

[0016]

[0017]

[0018] The supported device types are indicated by setting a bit, "1" means allowed, and "0" means rejected.

[0019]

[0020] Furthermore, the extended 645 message in step 2 distinguishes different device types, and the extended format is as follows: Master Station Request Frame

[0021] a) Function: Request device type

[0022] b) Control code: C = 11H

[0023] c) Data field length: L = 04H

[0024] d) Data identification DI: 04A0 00 01

[0025] C.2.2 Slave normal response frame

[0026] a) Function: Request device type

[0027] b) Control code: C = 11H

[0028] c) Data field length: L = 05H

[0029] The slave station replies with the following message data:

[0030]

[0031]

[0032] Furthermore, in step 5, the intelligent fusion terminal and the terminal equipment connected to the substation need to install mutual inductors to sense the micro-current signals in the process of household transformer identification; and write the archive configuration file devcfg.json according to the specification "Substation Intelligent Fusion Terminal Micro-Application Development Specification Part 1: Technical Requirements".

[0033] Furthermore, in step 6, the terminal device accessing the station area needs to have its location description information written in advance to distinguish it from other devices of the same type.

[0034] Furthermore, in step 7, each collection APP periodically monitors changes in the archive configuration file and is only responsible for the synchronization of the device files of this category.

[0035] Furthermore, in step 8, the topology identification function is started by using inter-process communication.

[0036] The beneficial effects of the present invention are as follows: the method can automatically identify the power distribution equipment in this substation without manual intervention through the main station or terminal. The power distribution equipment only needs to be connected to the power grid, and the equipment will automatically form a network with the fusion terminal and report the equipment file information to realize the function of communication between the power distribution equipment and the main station. In addition, through household change identification, the equipment information of this substation is sorted out, and the power distribution equipment not in this substation is automatically deleted. The method realizes the automation of power distribution equipment access and has good engineering practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is an overall interaction diagram of the present invention.

[0038] Figure 2 This is the information flow diagram of the plug-and-play micro-application of the intelligent fusion terminal described in the present invention.

[0039] Figure 3 This is a flow chart of the plug-and-play core micro-application of the intelligent fusion terminal described in the present invention. DETAILED DESCRIPTION

[0040] The present invention is further described below in conjunction with the accompanying drawings. The following content is only used to more clearly illustrate the technical solution of the present invention and cannot be used to limit the protection scope of the present invention.

[0041] Combined with Figure 1 , a plug-and-play method for a power distribution terminal device applied to an intelligent converged terminal, comprising the following steps:

[0042] Step 1: After the CCO is powered on, the substation terminal configures the device types allowed to access the network by extending the 376.2 message.

[0043] Step 2: After the STA is powered on, it obtains the device address and distinguishes different device types.

[0044] Step 3: CCO initiates STA networking through the central beacon. After receiving the central beacon, the STA sends a network association request based on its own device type.

[0045] Step 4: CCO identifies the device type in the association request, only allows the configured device type to access the network, and replies to the association confirmation command, obtains the device registration file, and actively reports it to the intelligent fusion terminal.

[0046] Step 5: Start household change identification: The intelligent fusion terminal configures the STA characteristic current sending time in the registration file according to the CCO reporting terminal equipment file, starts household change identification and sorts out the files of this area; the terminal sends the files that do not belong to this area to the CCO, and the CCO sends an offline indication to the STA that does not belong to this area and adds it to the blacklist. For the equipment belonging to this area, it is added to the file configuration file of the intelligent fusion terminal. The main logical process of the core micro application of the plug-and-play method is as follows Figure 3 shown.

[0047] Step 6: Determine the terminal device change status: For the terminal device file newly reported by CCO, the intelligent fusion terminal actively reads the location description information of the terminal device and compares it with the file configuration file. According to the location description information, the terminal device change status is determined. The logical process is as follows: Figure 3 As shown;

[0048] Step 7: The collection APP detects changes in the file configuration file, sorts the file, updates it synchronously to the data center, communicates with the terminal device, uploads the terminal device data to the distribution automation master station, and communicates between related micro-applications in the intelligent fusion terminal. Figure 2 shown.

[0049] Step 8: After the device profile is synchronized and updated to the data center, start the topology recognition function to perform topology recognition on the changed devices to achieve fully automated access to end devices.

[0050] The above embodiments are descriptions of specific implementation methods of the present invention rather than limitations of the present invention. Technical personnel in the relevant technical field may make various changes and modifications to obtain corresponding equivalent technical solutions without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should be included in the patent protection scope of the present invention.

Claims

1. A plug-and-play method for a power distribution terminal device applied to an intelligent converged terminal, characterized in that: The following steps are involved: Step 1: After the CCO is powered on, the intelligent convergence terminal in the substation configures the types of end devices allowed to access the network by extending the 376.2 message; Step 2: After the STA is powered on, it obtains the end device address and distinguishes different end device types; Step 3: CCO initiates STA networking through the central beacon. After receiving the central beacon, the STA sends a network association request based on its own device type; Step 4: CCO identifies the terminal device type in the association request, only allows the configured device type to access the network, and replies to the association confirmation command, obtains the terminal device registration file, and actively reports it to the intelligent fusion terminal; Step 5: Start household change identification: The intelligent fusion terminal configures the STA characteristic current sending time in the registration file according to the CCO reporting terminal equipment file, starts household change identification and sorts out the files of this area; the terminal sends the files that do not belong to this area to the CCO, and the CCO sends an offline indication to the STA that does not belong to this area and adds it to the blacklist. For the equipment that belongs to this area, it is added to the file configuration file of the intelligent fusion terminal; Step 6: Determine the terminal device change status: For the terminal device file newly reported by the CCO, the intelligent fusion terminal actively reads the location description information of the terminal device and compares it with the file configuration file, and determines the terminal device change status based on the location description information; Step 7: The collection APP detects changes in the file configuration file, sorts the file, updates it synchronously to the data center, communicates with the terminal device, and uploads the terminal device data to the distribution automation master station; Step 8: After the device profile is synchronized and updated to the data center, start the topology recognition function to perform topology recognition on the changed end devices to achieve fully automated end device access.

2. According to claim 1, a plug-and-play method for power distribution terminal equipment applied to an intelligent converged terminal is characterized in that: The step 1 configures the terminal device types allowed to access the network by CCO by extending the 376.2 message. The message format uses a setting method to indicate the supported device types, "1" represents permission, and "0" represents rejection.

3. According to claim 1, a plug-and-play method for power distribution terminal equipment applied to an intelligent converged terminal is characterized in that: The step 2 distinguishes different device types by extending the 645 message and extending a data identifier to identify different types of end devices.

4. According to claim 1, a plug-and-play method for power distribution terminal equipment applied to an intelligent converged terminal is characterized in that: In step 5, the intelligent fusion terminal and the terminal equipment accessing the substation are equipped with a mutual inductor for sensing micro-current signals in the process of identifying the household transformer.

5. The plug-and-play method for power distribution terminal equipment applied to an intelligent converged terminal according to claim 1, characterized in that: In step 6, the terminal device connected to the station area needs to have its location description information written in advance to distinguish it from other devices of the same type.

6. The plug-and-play method for power distribution terminal equipment applied to an intelligent converged terminal according to claim 1, characterized in that: In step 7, the collection APP periodically monitors changes in the archive configuration file and is responsible for synchronizing the distribution end equipment files.

7. The plug-and-play method for power distribution terminal equipment applied to an intelligent converged terminal according to claim 1, characterized in that: In step 8, the topology identification function is started by using inter-process communication.

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