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Dynamic identification method for topological structure of low-voltage power distribution network

A low-voltage distribution network and topology technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve problems such as inability to automatically identify, unstable grid topology, and potential safety hazards.

Pending Publication Date: 2021-09-07
CHINA ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past development of the power grid, many power grid topologies were not clear, leading to possible instability or safety hazards in the existing power grid topology, and it has a major impact on whether the fault can be resolved in the first place when an accident occurs
[0003] The topology identification of the existing method requires on-site personnel to compare, connect and draw lines one by one, which is time-consuming. It takes a lot of manpower to complete the topology drawing of a station area, and in the case of equipment disconnection or reconnection, etc. Unable to automatically identify, still rely on on-site personnel to handle

Method used

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  • Dynamic identification method for topological structure of low-voltage power distribution network
  • Dynamic identification method for topological structure of low-voltage power distribution network
  • Dynamic identification method for topological structure of low-voltage power distribution network

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Embodiment 1

[0044] A flow diagram of a dynamic identification method for the topology of a low-voltage distribution network provided by the present invention is as follows figure 1 shown, including:

[0045] Step 1: Update the initial topology model of each low-voltage intelligent carrier device in the low-voltage distribution network according to the network status of each low-voltage intelligent carrier device in the low-voltage distribution network;

[0046] Step 2: matching the topology models of each low-voltage intelligent carrier device in the low-voltage distribution network to obtain the topology structure of the low-voltage distribution network;

[0047] Wherein, the initial topology model of the low-voltage smart carrier device consists of device information of the low-voltage smart carrier device, device information of upstream devices of the low-voltage smart carrier device, and device information and connection status of all downstream devices of the low-voltage smart carrie...

Embodiment 2

[0071] (1) The process of equipment network topology identification is as attached Figure 4 As shown, the steps are as follows:

[0072] 1. The low-voltage intelligent carrier device A successfully registers and joins the network;

[0073] 2. Device A updates its own topology model and adds the topology model information of upstream device B;

[0074] 3. Device A sends the topology model to the side device and sends its own device information to the upstream device B;

[0075] 4. When device B receives the device information of device A, it updates its own topology model and adds the topology model information of downstream device A;

[0076] 5. Device B sends its own topology model to the edge device;

[0077] 6. After receiving the topology model, the edge device stores it in the topology model library and sends it to the cloud master station;

[0078] 7. The cloud master station performs model analysis and matching. If the models of device A and device B are successful...

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Abstract

The invention provides a dynamic identification method for a topological structure of a low-voltage power distribution network. The dynamic identification method comprises the steps of: updating an initial topological model of each low-voltage intelligent carrier device in the low-voltage power distribution network according to a network state of each low-voltage intelligent carrier device in the low-voltage power distribution network; and matching the topological models of the low-voltage intelligent carrier devices in the low-voltage power distribution network to obtain a topological structure of the low-voltage power distribution network. The initial topological model of each low-voltage intelligent carrier device is composed of device information of the low-voltage intelligent carrier device, device information of an upstream device of the low-voltage intelligent carrier device and device information and connection states of all downstream devices of the low-voltage intelligent carrier device. By using the method provided by the invention, when the carrier devices in the low-voltage power distribution network change, disconnection and reconnection of the devices can be automatically identified, minute-level topology identification and automatic drawing of a topology diagram are realized, and time cost and labor cost are greatly saved.

Description

technical field [0001] The invention belongs to the field of intelligent terminals in distribution stations, and in particular relates to a dynamic identification method for the topological structure of a low-voltage distribution network. Background technique [0002] With the continuous development of the scale of the smart grid, the planning, design and sorting of the power system network structure become particularly important. In the past development of the power grid, many power grid topologies were not clear, leading to possible instability or safety hazards in the existing power grid topology, and had a major impact on whether the fault could be resolved in the first place when an accident occurred. [0003] The topology identification of the existing method requires on-site personnel to compare, connect and draw lines one by one, which is time-consuming. It takes a lot of manpower to complete the topology drawing of a station area, and in the case of equipment discon...

Claims

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Application Information

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IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 姚志国王鹏刘强张冀川郭屾林佳颖朱正谊秦四军谭传玉白帅涛张明宇孙浩洋张治明吕琦张永芳
Owner CHINA ELECTRIC POWER RES INST
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