Active Polling Method for Node Switch Information Based on Distribution Topology Network

Abstract

The present invention discloses an active polling method for node switch information based on a distribution network topology, comprising the following steps: S1, constructing a distribution network topology including a main protection, intermediate protection, and terminals as nodes and performing node configuration; S2, the main protection respectively sending first current modulation signals to the subordinate intermediate protection according to the first polling list, and the intermediate protection sequentially obtaining the corresponding first current modulation signals to perform corresponding actions; S3, the intermediate protection sending second current modulation signals to the subordinate terminals according to the second polling list, and the terminals receiving the second current modulation signals to perform corresponding actions; S4, the main protection sequentially obtaining the data uploaded by each intermediate protection terminal to perform quantitative analysis on the node switches of the topology network, and locating the faulty node switch. The solution sets the trigger conditions for each level of nodes, collects and transmits data in an orderly manner, avoids information redundancy and blockage, can accurately identify faulty nodes, and improves the intelligent level of the distribution network.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent distribution networks, and specifically, to an active polling method for node switch information based on a distribution topology network. Background Art

[0002] An intelligent power grid is the intellectualization of the power grid, also known as "Power Grid 2.0". It is based on an integrated, high-speed two-way communication network and realizes the goals of reliable, safe, economic, efficient, environmentally friendly, and user-safe power grids through the application of advanced sensing and measurement technologies, advanced equipment technologies, advanced control methods, and advanced decision support system technologies; an intelligent fusion terminal is an edge device in the "cloud management edge terminal" architecture of the intelligent Internet of Things system, with functions of information collection, Internet of Things agency, and edge computing, supporting marketing, power distribution, and emerging services, and can be well integrated into the new power grid as an intelligent device for information analysis and decision-making.

[0003] There are a large number of nodes at each level in the existing intelligent distribution network system, and it is extremely difficult to involve the receipt, transmission, and management of a large amount of data. How to orderly obtain and upload data, distinguish fault data, and locate fault nodes is an urgent problem to be solved. Summary of the Invention

[0004] In view of the above technical problems, the present invention proposes an active polling method for node switch information based on a distribution topology network. By setting the trigger conditions for nodes at each level, data collection, transmission, and reception are carried out orderly, avoiding information redundancy and congestion, and being able to accurately identify fault nodes and improve the intelligent level of the distribution network.

[0005] To achieve the above technical objectives, a technical solution provided by the present invention is an active polling method for node switch information based on a distribution topology network, including the following steps:

[0006] S1. Construct a distribution topology network with the main protection, intermediate protection, and terminals as nodes and perform node configuration;

[0007] S2. The main protection sends a first current modulation signal to the subordinate intermediate protection respectively according to the first polling list, and the intermediate protection sequentially obtains the corresponding first current modulation signal and executes corresponding actions;

[0008] S3. The intermediate protection sends a second current modulation signal to the subordinate terminal according to the second polling list, and the terminal receives the second current modulation signal and executes corresponding actions;

[0009] S4. The main protection sequentially obtains the data uploaded by each intermediate protection end and performs quantitative analysis on the node switches of the topology network to locate the fault node switch.

[0010] Preferably, in S1, a power distribution topology network including the main protection, intermediate protection, and terminals as node switches is constructed, including:

[0011] The main protection is electrically connected to at least two downstream intermediate protections, and the intermediate protection is electrically connected to at least two downstream terminals.

[0012] Preferably, in S1, the node configuration includes:

[0013] Configure the first round inquiry list, the first current modulator, and the first receiving unit at the main protection end;

[0014] Configure the second round inquiry list, the second current modulator, the first frequency identifier, and the second receiving unit at the intermediate protection end;

[0015] Configure the second frequency identifier at the terminal.

[0016] Preferably, in S2, the following steps are included:

[0017] Configure the first round inquiry list according to the switch address of the intermediate protection, and all the switch addresses of the downstream intermediate protections are included in the first round inquiry list;

[0018] Configure the first current frequency of the first current modulator according to the first round inquiry list, and the first current frequency is injected into the downstream line to generate a first current modulation signal; the first current modulation signal is used as the action trigger signal for the intermediate protection.

[0019] Preferably, in S3, the following steps are included:

[0020] Configure the second round inquiry list according to the switch address of the terminal, and all the switch addresses of the downstream terminals are included in the second round inquiry list;

[0021] Configure the second current frequency of the second current modulator according to the second round inquiry list, and the second current frequency is injected into the downstream circuit to generate a second current modulation signal; the second current modulation signal is used as the action trigger signal for the terminal.

[0022] Preferably, the first current modulation signal being used as the action trigger signal for the intermediate protection includes:

[0023] When the first frequency identifier receives the first current modulation signal, extract the first current frequency in the first current modulation signal. If the first current frequency is the same as the preset first current frequency, the second current modulator configures the second current frequency according to the second round inquiry list and injects the corresponding second current frequency into the downstream circuit in sequence.

[0024] Preferably, the second current modulation signal being used as the action trigger signal for the terminal includes:

[0025] When the second frequency identifier receives the second current modulation signal, it extracts the second current frequency in the second current modulation signal. If the second current frequency is the same as the preset second current frequency, the terminal will tag the collected information with the corresponding switch address to obtain the first tag information, and send the first tag information to the second receiving unit of the corresponding intermediate protection.

[0026] Preferably, in S4, the main protection sequentially obtains the data uploaded by each intermediate protection end and performs quantitative analysis on the node switches of the topology network to locate the faulty node switch, including:

[0027] The second receiving unit of the intermediate protection sequentially receives the first tag information uploaded by the downstream terminal, and tags all the first tag information with the switch information of the corresponding main protection to obtain the second tag information;

[0028] Send the second tag information to the first receiving unit of the main protection; after the first receiving unit analyzes the corresponding tag information, compare it with the typical value of the node. If the collected information of the node is greater than the corresponding typical value, it is determined that the node is faulty and a fault warning is issued.

[0029] The beneficial effects of the present invention: The present invention proposes an active polling method for node switch information based on the distribution network topology network. By setting the trigger conditions of each layer of nodes, data collection and transceiver are carried out in an orderly manner, avoiding information redundancy and congestion, and being able to accurately identify faulty nodes, improving the intelligent level of the distribution network. Description of the Drawings

[0030] Figure 1 It is a flowchart of the active polling method for node switch information based on the distribution network topology network of the present invention. Detailed Embodiment

[0031] To make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described here are only the best embodiments of the present invention, only used to explain the present invention, and do not limit the protection scope of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0032] Embodiment: As Figure 1 shown, the active polling method for node switch information based on the distribution network topology network includes the following steps:

[0033] S1. Construct a distribution network topology network including the main protection, intermediate protection, and terminal as nodes and perform node configuration; the main protection is electrically connected to at least two lower-level intermediate protections, and the intermediate protection is electrically connected to at least two lower-level terminals.

[0034] Among them, the node configuration includes:

[0035] Configure the first round of polling table, the first current modulator, and the first receiving unit of the main protection end;

[0036] Configure the second round of polling table, the second current modulator, the first frequency identifier, and the second receiving unit of the intermediate protection end;

[0037] Configure the second frequency identifier of the terminal.

[0038] In this embodiment, a fusion terminal is provided at the main protection end. The fusion terminal configures the first round of polling table according to the node address of the distribution topology network, and sets the modulation frequency of the corresponding first current modulator according to the first round of polling table, ensuring that the frequencies received by the downstream intermediate protections are all fixed frequencies that they default to receive, so that each downstream intermediate protection is independently triggered; the second round of polling table is configured according to the downstream terminal address, and the modulation frequency of the corresponding second current modulator is set according to the second round of polling table, ensuring that the frequencies received by the downstream terminals are all fixed frequencies that they default to receive, so that each downstream terminal is independently triggered; the first frequency identifier is used to identify the first current frequency in the first current modulation signal in the upstream circuit and compare it with the set inherent frequency to determine the trigger condition. The second frequency identifier is used to identify the second current frequency in the second current modulation signal in the upstream circuit and compare it with the set inherent frequency to determine the trigger condition.

[0039] S2. The main protection sends the first current modulation signal to the downstream intermediate protections respectively according to the first round of polling table, and the intermediate protections sequentially obtain the corresponding first current modulation signals and execute corresponding actions.

[0040] Configure the first round of polling table according to the switch address of the intermediate protection. The first round of polling table includes the switch addresses of all downstream intermediate protections;

[0041] Configure the first current frequency of the first current modulator according to the first round of polling table. The first current frequency is injected into the downstream line to generate the first current modulation signal; the first current modulation signal is used as the action trigger signal for the intermediate protection.

[0042] The first current modulation signal being used as the action trigger signal for the intermediate protection includes:

[0043] When the first frequency identifier receives the first current modulation signal, extract the first current frequency in the first current modulation signal. If the first current frequency is the same as the preset first current frequency, the second current modulator configures the second current frequency according to the second round of polling table and sequentially injects the corresponding second current frequency into the downstream circuit.

[0044] In this solution, each downstream terminal address corresponds to a second current frequency, and the second current frequencies are different from each other, which enables the triggering between each terminal to be triggered differentially according to the time sequence and conditions.

[0045] S3. The central protector sends a second current modulation signal to the downstream terminals according to the second polling table, and the terminals receive the second current modulation signal and perform corresponding actions.

[0046] Configure the second polling table according to the switch addresses of the terminals. The second polling table includes the switch addresses of all downstream terminals.

[0047] Configure the second current frequency of the second current modulator according to the second polling table. The second current frequency is injected into the downstream circuit to generate a second current modulation signal. The second current modulation signal is used as an action trigger signal for the terminals.

[0048] The second current modulation signal being used as an action trigger signal for the terminals includes:

[0049] When the second frequency identifier receives the second current modulation signal, extract the second current frequency in the second current modulation signal. If the second current frequency is the same as the preset second current frequency, the terminal will tag the collected information with the corresponding switch address to obtain first tag information, and send the first tag information to the second receiving unit of the corresponding central protector.

[0050] S4. The main protector sequentially obtains the data uploaded by each central protector terminal, performs a quantization analysis on the node switches of the topology network, and locates the faulty node switch.

[0051] The second receiving unit of the central protector sequentially receives the first tag information uploaded by the downstream terminals, and tags all the first tag information with the switch information of the corresponding main protector to obtain second tag information.

[0052] Send the second tag information to the first receiving unit of the main protector. After the first receiving unit analyzes the corresponding tag information, compare it with the typical value of the node. If the collected information of the node is greater than the corresponding typical value, it is determined that the node is faulty and a fault warning is given.

[0053] The above-mentioned specific implementation manners are the preferred implementation manners of the active polling method flowchart of the node switch information based on the distribution network topology of the present invention, and do not limit the specific scope of the present invention hereby. The scope of the present invention includes but is not limited to this specific implementation manner. All equivalent changes made according to the shape and structure of the present invention are within the protection scope of the present invention.

Claims

1. Active polling method for node switch information based on distribution network topology, Characterized in that, It includes the following steps: S1. Construct a distribution network topology with main protection, intermediate protection and terminals as nodes and perform node configuration; S2. The main protection sends the first current modulation signal to the downstream intermediate protection according to the first polling list respectively, and the intermediate protection sequentially obtains the corresponding first current modulation signal and performs corresponding actions; S3. The intermediate protection sends the second current modulation signal to the downstream terminal according to the second polling list, and the terminal receives the second current modulation signal and performs corresponding actions; S4. The main protection sequentially obtains the data uploaded by each intermediate protection terminal, performs quantitative analysis on the node switches of the topology network, and locates the faulty node switch; In S1, the node configuration includes: Configure the first polling list, the first current modulator, and the first receiving unit at the main protection end; Configure the second polling list, the second current modulator, the first frequency identifier, and the second receiving unit at the intermediate protection end; Configure the second frequency identifier at the terminal; In S2, it includes the following steps: Configure the first polling list according to the switch address of the intermediate protection, and the first polling list includes the switch addresses of all downstream intermediate protections; Configure the first current frequency of the first current modulator according to the first polling list, and the first current frequency is injected into the downstream line to generate the first current modulation signal; the first current modulation signal is used as the action trigger signal for the intermediate protection; In S3, it includes the following steps: Configure the second polling list according to the switch address of the terminal, and the second polling list includes the switch addresses of all downstream terminals; Configure the second current frequency of the second current modulator according to the second polling list, and the second current frequency is injected into the downstream circuit to generate the second current modulation signal; the second current modulation signal is used as the action trigger signal for the terminal; In S4, the main protection sequentially obtains the data uploaded by each intermediate protection terminal, performs quantitative analysis on the node switches of the topology network, and locates the faulty node switch, including: The second receiving unit of the intermediate protection sequentially receives the first tag information uploaded by the downstream terminal, and tags all the first tag information with the switch information of the corresponding main protection to obtain the second tag information; Send the second tag information to the first receiving unit of the main protection; after the first receiving unit analyzes the corresponding tag information, compare it with the typical value of the node. If the collected information of the node is greater than the corresponding typical value, it is determined that the node is faulty and a fault warning is issued.

2. The active polling method for node switch information based on distribution network topology according to claim 1, Characterized in that, In S1, constructing a distribution network topology with main protection, intermediate protection and terminal as node switches includes: The main protection is electrically connected to at least two downstream intermediate protections, and the intermediate protection is electrically connected to at least two downstream terminals.

3. The active polling method for node switch information based on distribution network topology according to claim 1, Characterized in that, The first current modulation signal is used as the action trigger signal for the intermediate protection, including: When the first frequency identifier receives the first current modulation signal, extract the first current frequency in the first current modulation signal. If the first current frequency is the same as the preset first current frequency, the second current modulator configures the second current frequency according to the second polling table and sequentially injects the corresponding second current frequency into the downstream circuit.

4. The active polling method for node switch information based on the distribution topology network according to claim 1, characterized in that the second current modulation signal serves as an action trigger signal for the terminal and includes: When the second frequency identifier receives the second current modulation signal, extract the second current frequency in the second current modulation signal. If the second current frequency is the same as the preset second current frequency, the terminal tags the collected information with the corresponding switch address to obtain the first tag information and sends the first tag information to the second receiving unit of the corresponding intermediate protection.

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