A communication method and system for the operation and distribution network in a low-voltage power distribution area

Abstract

The present invention relates to the technical field of low-voltage intelligent distribution networks, and specifically provides a method and system for communication between operation and distribution networks in a low-voltage substation area, including: an edge gateway device uses an HPLC central coordinator to form a network; after the device under test accesses the network, the service master station corresponding to the edge gateway device sends a task to the edge gateway device; the edge gateway device that receives the task executes the task based on the network status of other edge gateway devices in the network. The technical solution provided by the present invention can effectively improve the network utilization rate and reduce the network loss caused by network coordination such as the two networks competing for TDMA segments.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage intelligent distribution networks, and particularly relates to a communication method and system for operation and distribution networks in a low-voltage substation area. Background Art

[0002] With the construction of low-voltage intelligent distribution networks and the gradual improvement of the "cloud, pipe, edge, and terminal" architecture system, the demand for communication has become increasingly obvious. Currently, the edge-side interaction in low-voltage distribution networks mainly uses HPLC, and there are two communication networks for marketing and power distribution. These two networks mainly coexist in two ways: same frequency and different frequencies. Both of these methods have significant drawbacks. When the two networks are of the same frequency, due to the large number of devices for power distribution and marketing intersecting with each other, the network coordination task volume increases, resulting in a network efficiency loss of about 60%. When the two networks are of different frequencies, due to out-of-band radiation and noise interference, etc., there is still a network efficiency loss of about 25%.

[0003] The above two methods have low communication utilization rates, which will affect the services and cannot ensure the integrity of services such as high-frequency collection and the timeliness of services such as event reporting. Summary of the Invention

[0004] In order to overcome the above defects, the present invention proposes a communication method and system for operation and distribution networks in a low-voltage substation area.

[0005] In a first aspect, a communication method for operation and distribution networks in a low-voltage substation area is provided. The communication method for operation and distribution networks in the low-voltage substation area includes:

[0006] The edge gateway device uses the HPLC central coordinator to form a network;

[0007] After the device under test accesses the network, the service master station corresponding to the edge gateway device issues a task to the edge gateway device;

[0008] The edge gateway device that receives the task executes the task based on the network status of other edge gateway devices in the network.

[0009] Preferably, the edge gateway device uses the HPLC central coordinator to form a network, including:

[0010] The edge gateway device adjusts the communication frequency band of its HPLC central coordinator to be the same as the frequency band of the HPLC central coordinator module of other edge gateway devices, and receives the device file information of other edge gateway devices issued by its corresponding service master station;

[0011] The HPLC central coordinator of the edge gateway device sends an inquiry about whether it supports collaborative networking to the HPLC central coordinator of other edge gateway devices;

[0012] After receiving the inquiry of whether to support collaborative networking, the HPLC central coordinator of other edge gateway devices determines whether it supports the collaborative networking protocol. If so, it returns the support networking confirmation information to the HPLC central coordinator of the edge gateway device. Otherwise, it returns the information that it does not support networking.

[0013] After receiving the confirmation frame confirming support for the collaborative networking protocol, the HPLC central coordinator of the edge gateway device sends a networking request to the HPLC central coordinators of other edge gateway devices;

[0014] After receiving the networking request, the HPLC central coordinator of other edge gateway devices calls the device file information of the edge gateway device and compares it. After the comparison is successful, the networking success information is returned to the HPLC central coordinator of the edge gateway device;

[0015] The HPLC central coordinator of the edge gateway device exchanges the device archive information stored in itself with the HPLC central coordinators of other edge gateway devices, and the networking is completed.

[0016] Furthermore, the edge gateway device is an intelligent fusion terminal or concentrator in the substation area.

[0017] Furthermore, when the edge gateway device is a substation intelligent fusion terminal, the device under test is an intelligent circuit breaker or a photovoltaic circuit breaker; when the edge gateway device is a concentrator, the device under test is an electric meter.

[0018] Preferably, the network access process of the device under test includes:

[0019] The business master station corresponding to the edge gateway device sends the file of the device under test to the edge gateway device;

[0020] After the edge gateway device finds that the profile information is updated, it sends the profile of the device under test to other edge gateway devices in the network with it;

[0021] After the device under test is powered on, it sends a network access request to the edge gateway device through its corresponding HPLC tail module;

[0022] After receiving the network access request, the edge gateway device determines through the HPLC central coordinator whether the device under test belongs to this specialty or area and whether there is archival information;

[0023] After the comparison is successful, the device under test is allowed to access the network and the successful access information of the device under test is returned, and the network information is updated to other edge gateway devices in the network.

[0024] Preferably, the network access process of the device under test includes:

[0025] The business master station corresponding to the edge gateway device sends the file of the device under test to the edge gateway device;

[0026] After the edge gateway device discovers that the file information is updated, it sends the file of the device under test to other edge gateway devices networking with it.

[0027] The edge gateway device and other edge gateway devices networking with it send commands to scan the specified device under test to all child nodes through the HPLC central coordinator at fixed intervals.

[0028] After receiving the command, the child node scans the surrounding devices.

[0029] After the child node searches for the device under test, it sends an access command to it.

[0030] After receiving the access command, the device under test sends an access request to the child node carrying the device information.

[0031] The child node forwards the access request to the edge gateway device.

[0032] The edge gateway device analyzes the routing information of the device under test and sends the routing information of the device under test to the device under test.

[0033] The device under test completes access through the routing information.

[0034] Preferably, the edge gateway device that receives the task executes the task based on the network status of other edge gateway devices in the network, including:

[0035] Step 1: The edge gateway device that receives the task determines whether its own network status is idle. If so, it enters Step 2; otherwise, it re-determines after a preset time.

[0036] Step 2: The edge gateway device that receives the task asks whether the network status of other edge gateway devices in its network is idle. If so, it enters Step 3; otherwise, it re-determines after a preset time.

[0037] Step 3: The edge gateway device that receives the task issues a command to the device under test and locks the resource occupancy status.

[0038] Step 4: After the device under test successfully executes the command, it returns the data to the edge gateway device that receives the task.

[0039] Step 5: After the edge gateway device that receives the task receives the task information indicating that the collection is completed, it unlocks the resource status and the service is completed.

[0040] In a second aspect, a medium-voltage and low-voltage distribution network communication system in a low-voltage power distribution area is provided. The medium-voltage and low-voltage distribution network communication system in the low-voltage power distribution area includes: an edge gateway device, a service master station corresponding to the edge gateway device, and other edge gateway devices networking with the edge gateway device.

[0041] The edge gateway device is used to form a network with other edge gateway devices by using the HPLC central coordinator;

[0042] The service master station corresponding to the edge gateway device is used to send tasks to the edge gateway device after the device under test accesses the network;

[0043] The edge gateway device is further used to execute the task based on the network status of other edge gateway devices in the network.

[0044] Further, the edge gateway device is specifically used for:

[0045] Adjust the communication frequency band of its HPLC central coordinator to be the same as that of the HPLC central coordinator module of other edge gateway devices, and receive the device file information of other edge gateway devices sent by its corresponding service master station;

[0046] Send an inquiry about whether it supports collaborative networking to the HPLC central coordinator of other edge gateway devices through the HPLC central coordinator, so that the HPLC central coordinator of other edge gateway devices can judge whether it supports the collaborative networking protocol after receiving the inquiry about whether it supports collaborative networking. If so, return a confirmation message of supporting networking to the HPLC central coordinator of the edge gateway device; otherwise, return a message of not supporting networking;

[0047] After receiving the confirmation frame of supporting the collaborative networking protocol through the HPLC central coordinator, send a networking request to the HPLC central coordinator of other edge gateway devices, so that the HPLC central coordinator of other edge gateway devices can call the device file information of the edge gateway device and compare it after receiving the networking request. After successful comparison, return a message of successful networking to the HPLC central coordinator of the edge gateway device;

[0048] Exchange the device file information stored by itself with the HPLC central coordinator of other edge gateway devices through the HPLC central coordinator, and the networking is completed.

[0049] Further, the edge gateway device is a smart fusion terminal or concentrator in the substation area.

[0050] Further, when the edge gateway device is a smart fusion terminal in the substation area, the device under test is a smart circuit breaker or a photovoltaic circuit breaker; when the edge gateway device is a concentrator, the device under test is an electricity meter.

[0051] Preferably, the process of the device under test accessing the network includes:

[0052] The service master station corresponding to the edge gateway device sends the file of the device under test to the edge gateway device;

[0053] After the edge gateway device discovers that the file information is updated, it sends the file of the device under test to other edge gateway devices networking with it;

[0054] After the device under test is powered on, it sends an access request to the edge gateway device through its corresponding HPLC end;

[0055] After receiving the access request, the edge gateway device determines whether the device under test belongs to this specialty or distribution area and whether there is file information through the HPLC central coordinator;

[0056] After successful comparison, it agrees to the access of the device under test and returns the access success information of the device under test, and updates the network information to other edge gateway devices in the network.

[0057] Preferably, the access process of the device under test includes:

[0058] The service master station corresponding to the edge gateway device issues the file of the device under test to the edge gateway device;

[0059] After the edge gateway device discovers that the file information is updated, it sends the file of the device under test to other edge gateway devices networking with it;

[0060] The edge gateway device and other edge gateway devices networking with it send commands to scan specified devices under test to all child nodes through the HPLC central coordinator at a fixed period;

[0061] After receiving the command, the child node scans the surrounding devices;

[0062] After the child node searches for the device under test, it sends an access command to it;

[0063] After receiving the access command, the device under test sends an access request to the child node carrying the device information;

[0064] The child node forwards the access request to the edge gateway device;

[0065] The edge gateway device analyzes the routing information of the device under test and sends the routing information of the device under test to the device under test;

[0066] The device under test completes access through the routing information.

[0067] Preferably, the edge gateway device is specifically used for:

[0068] Step 1: Judge whether its own network status is idle. If so, enter Step 2; otherwise, re-judge after a preset time;

[0069] Step 2: Ask whether the network status of other edge gateway devices in its network is idle. If so, enter Step 3; otherwise, re-judge after a preset time;

[0070] Step 3: Send a command to the device under test and lock the resource occupancy status, so that after the device under test successfully executes the command, it returns data to the edge gateway device that received the task;

[0071] Step 4: After receiving the task information indicating the completion of data collection, unlock the resource status, and the service is completed.

[0072] In a third aspect, a computer device is provided, including: one or more processors;

[0073] The processor is used to store one or more programs;

[0074] When the one or more programs are executed by the one or more processors, the described communication method for the operation and distribution network in the low-voltage substation area is implemented.

[0075] In a fourth aspect, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed, the described communication method for the operation and distribution network in the low-voltage substation area is implemented.

[0076] One or more of the above technical solutions of the present invention have at least one or more of the following beneficial effects:

[0077] The present invention provides a communication method and system for the operation and distribution network in the low-voltage substation area, including: the edge gateway device uses the HPLC central coordinator to form a network; after the device under test accesses the network, the service master station corresponding to the edge gateway device sends a task to the edge gateway device; the edge gateway device that receives the task executes the task based on the network status of other edge gateway devices in the network. The technical solution provided by the present invention can effectively improve the network utilization rate, reduce the network loss caused by network coordination such as the two networks competing for the TDMA segment, and at the same time, since the two professional devices can relay each other, the network strength is improved, and the communication delay and communication reliability are greatly improved, and the success rate of services such as data collection and event reporting is improved. The present invention improves the overall network efficiency by 162.5% compared with the same-frequency dual-HPLC network method. Description of the Drawings

[0078] Figure 1 It is a schematic flowchart of the main steps of the communication method for the operation and distribution network in the low-voltage substation area according to the embodiment of the present invention;

[0079] Figure 2 It is a flow chart of the cooperative network formation of the substation area intelligent fusion terminal and the concentrator according to the embodiment of the present invention;

[0080] Figure 3 It is a flowchart of the access of the low-voltage intelligent switch according to the embodiment of the present invention;

[0081] Figure 4It is the flowchart of the low-voltage intelligent switch accessing the network in another embodiment of the present invention;

[0082] Figure 5 It is the flowchart of service distribution in the embodiment of the present invention. Detailed implementation manners

[0083] The following further elaborates on the detailed implementation manners of the present invention with reference to the accompanying drawings.

[0084] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0085] Embodiment 1

[0086] Refer to the attached Figure 1 , Figure 1 It is the schematic diagram of the main steps of the communication method for the operation and distribution network in the low-voltage substation area in an embodiment of the present invention. As Figure 1 shown, the communication method for the operation and distribution network in the low-voltage substation area in the embodiment of the present invention mainly includes the following steps:

[0087] Step S101: The edge gateway device uses the HPLC central coordinator to form a network;

[0088] Step S102: After the device under test accesses the network, the service master station corresponding to the edge gateway device sends a task to the edge gateway device;

[0089] Step S103: The edge gateway device that receives the task executes the task based on the network status of other edge gateway devices in the network.

[0090] In this embodiment, the edge gateway device uses the HPLC central coordinator to form a network, including:

[0091] The edge gateway device adjusts the communication frequency band of its HPLC central coordinator to be the same as the frequency band of the HPLC central coordinator module of other edge gateway devices, and receives the device file information of other edge gateway devices sent by its corresponding service master station;

[0092] The HPLC central coordinator of the edge gateway device sends an inquiry about whether it supports collaborative networking to the HPLC central coordinators of other edge gateway devices;

[0093] After receiving the inquiry of whether to support collaborative networking, the HPLC central coordinator of other edge gateway devices determines whether it supports the collaborative networking protocol. If so, it returns the support networking confirmation information to the HPLC central coordinator of the edge gateway device. Otherwise, it returns the information that it does not support networking.

[0094] After receiving the confirmation frame confirming support for the collaborative networking protocol, the HPLC central coordinator of the edge gateway device sends a networking request to the HPLC central coordinators of other edge gateway devices;

[0095] After receiving the networking request, the HPLC central coordinator of other edge gateway devices calls the device file information of the edge gateway device and compares it. After the comparison is successful, the networking success information is returned to the HPLC central coordinator of the edge gateway device;

[0096] The HPLC central coordinator of the edge gateway device exchanges the device archive information stored in itself with the HPLC central coordinators of other edge gateway devices, and the networking is completed.

[0097] Among them, the edge gateway device is an intelligent fusion terminal or concentrator in the substation area.

[0098] Furthermore, when the edge gateway device is a substation intelligent fusion terminal, the device under test is an intelligent circuit breaker or a photovoltaic circuit breaker; when the edge gateway device is a concentrator, the device under test is an electric meter.

[0099] In one implementation, taking the distribution professional low-voltage intelligent fusion terminal and the marketing professional concentrator as an example, the fusion terminal and the concentrator networking process is as follows: Figure 2 As shown, the specific steps are as follows:

[0100] Step 1: Adjust the HPLC channel of the low-voltage intelligent fusion terminal so that it works on the same channel as the frequency of the concentrator HPLC central coordinator module, and the business main stations of both parties send the equipment file information of the other party respectively;

[0101] Step 2: The low-voltage intelligent fusion terminal central coordinator A searches for surrounding central coordinators;

[0102] Step 3: After A finds the available central coordinator B, it sends a query whether it supports collaborative networking;

[0103] Step 4: After receiving the inquiry request, B determines whether it supports the collaborative networking protocol. If it supports the collaborative networking protocol, it returns a confirmation message of supporting networking.

[0104] Step 5: After receiving the confirmation frame confirming support for the collaborative networking protocol, A sends a networking request to B;

[0105] Step 6: After B receives the network access request, it compares it with the archived information stored in itself. After successful comparison, it returns the information indicating successful network formation.

[0106] Step 7: A and B exchange the archived information stored in themselves

[0107] Step 8: The collaborative network formation is successful, and the network formation ends.

[0108] In this embodiment, the network access process of the device under test includes:

[0109] The service master station corresponding to the edge gateway device issues the archive of the device under test to the edge gateway device;

[0110] After the edge gateway device discovers the update of the archive information, it sends the archive of the device under test to other edge gateway devices that are networked with it;

[0111] After the device under test is powered on, it sends a network access request to the edge gateway device through its corresponding HPLC end;

[0112] After the edge gateway device receives the network access request, it determines whether the device under test belongs to this specialty or district and whether there is archive information through the HPLC central coordinator;

[0113] After successful comparison, it agrees to the network access of the device under test and returns the information indicating successful network access of the device under test, and updates the network information to other edge gateway devices in the network.

[0114] In one embodiment, taking the network access of a low-voltage intelligent switch as an example, the network access process is as Figure 3 shown, and the specific steps are as follows:

[0115] Step 1: The distribution automation master station issues the archive of the low-voltage intelligent switch to the district intelligent fusion terminal.

[0116] Step 2: After the intelligent fusion terminal discovers the update of the archive information, it sends the archive of the low-voltage intelligent switch to the concentrator.

[0117] Step 3: The low-voltage intelligent switch is connected and powered on, and the communication module A in the switch searches for available network nodes around.

[0118] Step 3: After discovering an available network, it sends a network access request to it carrying the switch information.

[0119] Step 3: After node B receives the information, the central coordinator determines whether this device belongs to this specialty or district and whether there is archive information.

[0120] Step 4: After successful comparison, it agrees to network formation and returns the information indicating successful network formation, and at the same time updates the new network information to the concentrator.

[0121] Step 5: After A receives the information indicating successful network formation, it completes the network formation.

[0122] In this embodiment, for the above-mentioned low-voltage intelligent switch network access process of the present invention, it can also be implemented by using the active search method of the central coordinator. The network access process of the device under test includes:

[0123] The service master station corresponding to the edge gateway device issues the file of the device under test to the edge gateway device;

[0124] After the edge gateway device discovers the update of the file information, it sends the file of the device under test to other edge gateway devices networking with it;

[0125] The edge gateway device and other edge gateway devices networking with it send commands to scan the specified device under test to all sub-nodes through the HPLC central coordinator at a fixed period;

[0126] After receiving the command, the sub-node scans the surrounding devices;

[0127] After the sub-node searches for the device under test, it sends a network access command to it;

[0128] After receiving the network access command, the device under test sends a network access request to the sub-node carrying the device information;

[0129] The sub-node forwards the network access request to the edge gateway device;

[0130] The edge gateway device analyzes the routing information of the device under test and sends the routing information of the device under test to the device under test;

[0131] The device under test completes network access through the routing information.

[0132] In one embodiment, taking the network access of the low-voltage intelligent switch as an example, as Figure 4 shown, the specific steps are as follows:

[0133] Step 1: The distribution automation master station issues device file information to the intelligent fusion terminal of the substation area.

[0134] Step 2: The central coordinator of the intelligent fusion terminal of the substation area updates the file information to the central coordinator of the concentrator.

[0135] Step 3: The low-voltage intelligent switch is connected and powered on.

[0136] Step 4: The intelligent fusion terminal of the substation area and the central coordinator of the concentrator send commands to scan the specified file device to all its sub-nodes at a fixed period.

[0137] Step 5: After receiving the command, the sub-node starts to scan the surrounding devices.

[0138] Step 6: When Node A searches for the low-voltage intelligent switch device, it sends a ready-to-network access command to it.

[0139] Step 7: After receiving the command to prepare for network access, the low-voltage intelligent switch sends a network access request to Node A carrying device information.

[0140] Step 8: Node A forwards the network access request to the substation area intelligent fusion terminal.

[0141] Step 9: The substation area intelligent fusion terminal notifies it to access the network with a new route by calculating and analyzing the optimal route information of the low-voltage intelligent switch.

[0142] Step 10: The low-voltage intelligent switch adjusts the route and the network formation is completed.

[0143] In this embodiment, the edge gateway device that receives the task executes the task based on the network status of other edge gateway devices in the network, including:

[0144] Step 1: The edge gateway device that receives the task determines whether its own network status is idle. If so, it proceeds to Step 2; otherwise, it re-determines after a preset time.

[0145] Step 2: The edge gateway device that receives the task asks whether the network status of other edge gateway devices in its network is idle. If so, it proceeds to Step 3; otherwise, it re-determines after a preset time.

[0146] Step 3: The edge gateway device that receives the task issues a command to the device under test and locks the resource occupancy status.

[0147] Step 4: After the device under test successfully executes the command, it returns the data to the edge gateway device that receives the task.

[0148] Step 5: After the edge gateway device that receives the task receives the task information indicating that the collection is completed, it unlocks the resource status and the service is completed.

[0149] In one embodiment, the equipment of the two majors of operation and distribution is in a single communication network, and the central coordinators of the equipment of each major work independently. Coordinating the TDMA segment in one network can effectively solve the problem that two networks compete for the TDMA segment exceeding the beacon period. When issuing services, it is necessary to ask the central coordinator of the other party whether the resources are free, and only when they are free can the service be issued. The process is as Figure 5 shown. Taking the collection of the switch status by the low-voltage intelligent switch as an example, the specific steps are as follows:

[0150] Step 1: The substation area intelligent fusion terminal issues a task for freezing data collection.

[0151] Step 2: The CCO of the substation area intelligent fusion terminal first asks whether the resources of the concentrator CCO are free.

[0152] Step 3: After obtaining the resource idle confirmation, send a command to the low-voltage intelligent switch and lock the resource occupancy status.

[0153] Step 4: After successfully collecting the data of the low-voltage intelligent switch, return the data to the intelligent integration terminal in the substation area.

[0154] Step 5: After the CCO of the intelligent integration terminal in the substation area receives the task information indicating the completion of data collection, unlock the resource status and complete the service.

[0155] Embodiment 2

[0156] Based on the same inventive concept, the present invention further provides a communication system for the operation and distribution network in a low-voltage substation area. The communication system for the operation and distribution network in the low-voltage substation area includes: an edge gateway device, a service master station corresponding to the edge gateway device, and other edge gateway devices networked with the edge gateway device;

[0157] The edge gateway device is used to network with other edge gateway devices by using an HPLC central coordinator;

[0158] The service master station corresponding to the edge gateway device is used to send a task to the edge gateway device after the device under test accesses the network;

[0159] The edge gateway device is further used to execute the task based on the network status of other edge gateway devices in the network.

[0160] Further, the edge gateway device is specifically used for:

[0161] Adjust the communication frequency band of its HPLC central coordinator to be the same as the frequency band of the HPLC central coordinator module of other edge gateway devices, and receive the device file information of other edge gateway devices sent by its corresponding service master station;

[0162] Send an inquiry about whether it supports collaborative networking to the HPLC central coordinator of other edge gateway devices through the HPLC central coordinator, so that after the HPLC central coordinator of other edge gateway devices receives the inquiry about whether it supports collaborative networking, it judges whether it supports the collaborative networking protocol. If so, it returns a networking confirmation message supporting networking to the HPLC central coordinator of the edge gateway device, otherwise, it returns a message not supporting networking;

[0163] After receiving the confirmation frame confirming the support for the collaborative networking protocol through the HPLC central coordinator, send a networking request to the HPLC central coordinator of other edge gateway devices, so that after the HPLC central coordinator of other edge gateway devices receives the networking request, it calls the device file information of the edge gateway device and makes a comparison. After the comparison is successful, it returns a networking success message to the HPLC central coordinator of the edge gateway device;

[0164] The networking is completed by exchanging the device profile information stored in the HPLC central coordinator with the HPLC central coordinators of other edge gateway devices.

[0165] Furthermore, the edge gateway device is an intelligent fusion terminal or concentrator in the substation area.

[0166] Furthermore, when the edge gateway device is a substation intelligent fusion terminal, the device under test is an intelligent circuit breaker or a photovoltaic circuit breaker; when the edge gateway device is a concentrator, the device under test is an electric meter.

[0167] Preferably, the network access process of the device under test includes:

[0168] The business master station corresponding to the edge gateway device sends the file of the device under test to the edge gateway device;

[0169] After the edge gateway device finds that the profile information is updated, it sends the profile of the device under test to other edge gateway devices in the network with it;

[0170] After the device under test is powered on, it sends a network access request to the edge gateway device through its corresponding HPLC tail module;

[0171] After receiving the network access request, the edge gateway device determines through the HPLC central coordinator whether the device under test belongs to this specialty or area and whether there is archival information;

[0172] After the comparison is successful, the device under test is allowed to access the network and the successful access information of the device under test is returned, and the network information is updated to other edge gateway devices in the network.

[0173] Preferably, the network access process of the device under test includes:

[0174] The business master station corresponding to the edge gateway device sends the file of the device under test to the edge gateway device;

[0175] After the edge gateway device finds that the profile information is updated, it sends the profile of the device under test to other edge gateway devices in the network with it;

[0176] The edge gateway device and other edge gateway devices networked with it send commands to scan the specified device under test to all child nodes through the HPLC central coordinator at a fixed period;

[0177] After receiving the command, the child node scans the surrounding devices;

[0178] After searching for the device under test, the subnode sends a network access command to it;

[0179] After receiving the network access command, the device under test sends a network access request to the subnode with device information;

[0180] The child node forwards the network access request to the edge gateway device;

[0181] The edge gateway device analyzes the routing information of the device under test and sends the routing information of the device under test to the device under test;

[0182] The device under test completes network access through the routing information.

[0183] Preferably, the edge gateway device is specifically used for:

[0184] Step 1: Determine whether its own network status is idle. If so, go to Step 2; otherwise, re-determine after a preset time;

[0185] Step 2: Ask whether the network status of other edge gateway devices in its network is idle. If so, go to Step 3; otherwise, re-determine after a preset time;

[0186] Step 3: Send a command to the device under test and lock the resource occupancy status, so that after the device under test successfully executes the command, it returns data to the edge gateway device that received the task;

[0187] Step 4: After receiving the task information indicating that the collection is completed, unlock the resource status and the service is completed.

[0188] Embodiment 3

[0189] Based on the same inventive concept, the present invention also provides a computer device, which includes a processor and a memory. The memory is used to store a computer program, and the computer program includes program instructions. The processor is used to execute the program instructions stored in the computer storage medium. The processor may be a Central Processing Unit (CPU), or may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. It is the computing core and control core of the terminal, and is suitable for implementing one or more instructions, specifically suitable for loading and executing one or more instructions in the computer storage medium to implement the corresponding method flow or corresponding function, so as to implement the steps of a low-voltage substation operation and distribution network communication method in the above embodiment.

[0190] Embodiment 4

[0191] Based on the same inventive concept, the present invention also provides a storage medium, specifically a computer-readable storage medium (Memory). The computer-readable storage medium is a memory device in a computer device and is used to store programs and data. It can be understood that the computer-readable storage medium here can include both the built-in storage medium in the computer device and, of course, the extended storage medium supported by the computer device. The computer-readable storage medium provides a storage space, and this storage space stores the operating device of the terminal. Moreover, in this storage space, there is also stored one or more instructions suitable for being loaded and executed by the processor. These instructions can be one or more computer programs (including program codes). It should be noted that the computer-readable storage medium here can be a high-speed RAM memory or a non-volatile memory, such as at least one disk memory. The one or more instructions stored in the computer-readable storage medium can be loaded and executed by the processor to implement the steps of a method for communication between operation and distribution networks in a low-voltage power distribution area in the above embodiments.

[0192] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program codes.

[0193] The present invention is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present invention. It should be understood that each flow and / or block in the flowchart and / or block diagram, as well as the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate a system for implementing the specified functions in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0194] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device implements the specified functions in Figure 1 one flow or multiple flows and / or blocks Figure 1The functions specified in one or more boxes.

[0195] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process. Thus, the instructions executed on the computer or other programmable device provide for implementing the steps of the functions specified in one Figure 1 one process or more processes and / or boxes Figure 1 step of the functions specified in one or more boxes.

[0196] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the specific implementation manners of the present invention can still be modified or equivalently replaced, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the protection scope of the claims of the present invention.

Claims

1. A communication method for the operation and distribution network in a low-voltage power distribution area, characterized in that, The method comprises: The edge gateway devices are networked using the HPLC central coordinator; After the device under test is connected to the network, the service master station corresponding to the edge gateway device sends tasks to the edge gateway device; The edge gateway device that receives the task executes the task based on the network status of other edge gateway devices in the network; The edge gateway device is networked using the HPLC central coordinator, including: The edge gateway device adjusts the communication frequency band of its HPLC central coordinator to be the same as the frequency band of the HPLC central coordinator modules of other edge gateway devices, and receives the device profile information of other edge gateway devices issued by its corresponding business master station; The HPLC central coordinator of the edge gateway device sends a query to the HPLC central coordinators of other edge gateway devices whether collaborative networking is supported; After receiving the inquiry of whether to support collaborative networking, the HPLC central coordinator of other edge gateway devices determines whether it supports the collaborative networking protocol. If so, it returns the support networking confirmation information to the HPLC central coordinator of the edge gateway device. Otherwise, it returns the information that it does not support networking. After receiving the confirmation frame confirming support for the collaborative networking protocol, the HPLC central coordinator of the edge gateway device sends a networking request to the HPLC central coordinators of other edge gateway devices; After receiving the networking request, the HPLC central coordinator of other edge gateway devices calls the device file information of the edge gateway device and compares it. After the comparison is successful, the networking success information is returned to the HPLC central coordinator of the edge gateway device; The HPLC central coordinator of the edge gateway device exchanges the device archive information stored in itself with the HPLC central coordinators of other edge gateway devices, and the networking is completed.

2. The method according to claim 1, characterized in that, The edge gateway device is an intelligent fusion terminal or concentrator in the substation area.

3. The method according to claim 2, wherein When the edge gateway device is a substation intelligent fusion terminal, the device under test is an intelligent circuit breaker or a photovoltaic circuit breaker; when the edge gateway device is a concentrator, the device under test is an electric meter.

4. The method according to claim 1, wherein The network access process of the device under test includes: The business master station corresponding to the edge gateway device sends the file of the device under test to the edge gateway device; After the edge gateway device finds that the profile information is updated, it sends the profile of the device under test to other edge gateway devices in the network with it; After the device under test is powered on, it sends a network access request to the edge gateway device through its corresponding HPLC central coordinator; After receiving the network access request, the edge gateway device determines through the HPLC central coordinator whether the device under test belongs to this specialty or area and whether there is archival information; After the comparison is successful, the device under test is allowed to access the network and the successful access information of the device under test is returned, and the network information is updated to other edge gateway devices in the network.

5. The method according to claim 1, wherein The network access process of the device under test includes: The business master station corresponding to the edge gateway device sends the file of the device under test to the edge gateway device; After the edge gateway device finds that the profile information is updated, it sends the profile of the device under test to other edge gateway devices in the network with it; The edge gateway device and other edge gateway devices networked with it send commands to scan the specified device under test to all child nodes through the HPLC central coordinator at a fixed period; After receiving the command, the child node scans the surrounding devices; After the child node searches for the device under test, it sends an access network command to it; After receiving the access network command, the device under test sends an access network request to the child node carrying the device information; The child node forwards the access network request to the edge gateway device; The edge gateway device analyzes the routing information of the device under test and sends the routing information of the device under test to the device under test; The device under test completes network access through the routing information.

6. The method according to claim 1, wherein The edge gateway device that receives the task executes the task based on the network status of other edge gateway devices in the network, including: Step 1: The edge gateway device that receives the task determines whether its own network status is idle. If so, it proceeds to Step 2; otherwise, it rejudges after a preset time; Step 2: The edge gateway device that receives the task asks whether the network status of other edge gateway devices in its network is idle. If so, it proceeds to Step 3; otherwise, it rejudges after a preset time; Step 3: The edge gateway device that receives the task issues a command to the device under test and locks the resource occupancy status; Step 4: After the device under test successfully executes the command, it returns the data to the edge gateway device that received the task; Step 5: After the edge gateway device that receives the task receives the task information indicating that the collection is completed, it unlocks the resource status and the service is completed.

7. A communication system for the operation and distribution network in a low-voltage substation area, characterized in that, The system includes: an edge gateway device, a service master station corresponding to the edge gateway device, and other edge gateway devices networked with the edge gateway device; The edge gateway device is used to network with other edge gateway devices using the HPLC central coordinator; The service master station corresponding to the edge gateway device is used to issue a task to the edge gateway device after the device under test accesses the network; The edge gateway device is also used to execute the task based on the network status of other edge gateway devices in the network; The edge gateway device is specifically used for: Adjust the communication frequency band of its HPLC central coordinator to be the same as the frequency band of the HPLC central coordinator module of other edge gateway devices, and receive the device file information of other edge gateway devices issued by its corresponding service master station; Send an inquiry about whether it supports collaborative networking to the HPLC central coordinator of other edge gateway devices through the HPLC central coordinator, so that after the HPLC central coordinator of other edge gateway devices receives the inquiry about whether it supports collaborative networking, it judges whether it supports the collaborative networking protocol. If so, it returns a networking confirmation message to the HPLC central coordinator of the edge gateway device; otherwise, it returns a non - support networking message; After receiving the confirmation frame supporting the collaborative networking protocol through the HPLC central coordinator, send a networking request to the HPLC central coordinator of other edge gateway devices, so that after the HPLC central coordinator of other edge gateway devices receives the networking request, it calls the device file information of the edge gateway device and performs a comparison. After the comparison is successful, it returns a networking success message to the HPLC central coordinator of the edge gateway device; Exchange the device file information stored by itself with the HPLC central coordinator of other edge gateway devices through the HPLC central coordinator, and the networking is completed.

8. The system according to claim 7, wherein The edge gateway device is an intelligent fusion terminal or concentrator in the substation area.

9. The system according to claim 8, wherein When the edge gateway device is a substation intelligent fusion terminal, the device under test is an intelligent circuit breaker or a photovoltaic circuit breaker; when the edge gateway device is a concentrator, the device under test is an electric meter.

10. The system according to claim 7, wherein, The network access process of the device under test includes: The business master station corresponding to the edge gateway device sends the file of the device under test to the edge gateway device; After the edge gateway device finds that the profile information is updated, it sends the profile of the device under test to other edge gateway devices in the network with it; After the device under test is powered on, it sends a network access request to the edge gateway device through its corresponding HPLC central coordinator; After receiving the network access request, the edge gateway device determines through the HPLC central coordinator whether the device under test belongs to this specialty or area and whether there is archival information; After the comparison is successful, the device under test is allowed to access the network and the successful access information of the device under test is returned, and the network information is updated to other edge gateway devices in the network.

11. The system according to claim 7, wherein The network access process of the device under test includes: The business master station corresponding to the edge gateway device sends the file of the device under test to the edge gateway device; After the edge gateway device finds that the profile information is updated, it sends the profile of the device under test to other edge gateway devices in the network with it; The edge gateway device and other edge gateway devices networked with it send commands to scan the specified device under test to all child nodes through the HPLC central coordinator at a fixed period; After receiving the command, the child node scans the surrounding devices; After searching for the device under test, the subnode sends a network access command to it; After receiving the network access command, the device under test sends a network access request to the subnode with device information; The child node forwards the network access request to the edge gateway device; The edge gateway device analyzes the routing information of the device under test and sends the routing information of the device under test to the device under test; The device under test completes network access through the routing information.

12. The system according to claim 7, wherein The edge gateway device is specifically used for: Step 1: Determine whether the network status is idle. If yes, proceed to step 2. Otherwise, re-determine after a preset time. Step 2: Inquire whether the network status of other edge gateway devices in the network is idle. If so, proceed to step 3. Otherwise, re-judge after a preset time. Step 3: Send a command to the device under test and lock the resource occupancy status so that after the device under test successfully executes the command, it returns data to the edge gateway device that receives the task; Step 4: After receiving the task information of collection completion, unlock the resource status and the business is completed.

13. A computer device, characterized in that, include: one or more processors; The processor is used to store one or more programs; When the one or more programs are executed by the one or more processors, the low-voltage distribution network communication method according to any one of claims 1 to 6 is implemented.

14. A computer-readable storage medium, characterized in that, A computer program is stored thereon, and when the computer program is executed, it implements the method for network communication in a low-voltage distribution area as described in any one of claims 1 to 6.

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