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Topology identification method of low-voltage distribution station area

An identification method and low-voltage power distribution technology, applied in electrical components, circuit devices, sustainable buildings, etc., can solve the problems of common high-voltage crosstalk in the station area, low frequency of power frequency communication, etc., to achieve simple control, simple function implementation, logical clear effect

Active Publication Date: 2021-08-13
范伟 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the relatively low frequency of power frequency communication, it will cause the problem of common high voltage crosstalk in the station area

Method used

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  • Topology identification method of low-voltage distribution station area
  • Topology identification method of low-voltage distribution station area
  • Topology identification method of low-voltage distribution station area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1, see figure 2 , taking the rightmost branch as an example.

[0029] Step A, TTU as the root node, periodically generates topology identification commands and sends them through the downlink module in the power distribution box of the root node; the ID of the branch monitoring unit in the power distribution box of the root node is ID0, and ID0 is added to the topology identification command.

[0030] Step B. After the branch monitoring unit of the first-level distribution box ID3 receives the topology identification command through the uplink module, it adds its own ID, ID3, to the topology identification command, and sends the topology identification command through the downlink module. The topology identification command includes ID0 and ID3 .

[0031] The second-level distribution box ID8 completes the same steps, and the topology identification command includes ID0, ID3, and ID8.

[0032] After the upstream module of the final distribution box ID12 re...

Embodiment 2

[0047] Example 2, see figure 2 , taking the leftmost branch as an example.

[0048] Step A, TTU, as the root node, periodically generates topology identification commands and sends them through the downlink module in the power distribution box of the root node; the waiting time in the topology identification commands is T=3 seconds.

[0049] Step B: After receiving the topology identification command through the uplink module, the branch monitoring unit of the first-level distribution box ID1 changes the waiting time in the topology identification command to 1.8 seconds, and sends the topology identification command through the downlink module.

[0050] In step C, after the branch monitoring unit of ID4 receives the topology identification command through the upstream module, there will be no upload command because there is no lower-level distribution box. After waiting for 1.8 seconds, add its own ID to the topology identification command and send it through the uplink modu...

Embodiment 3

[0056] Embodiment 3, see figure 2 , taking the middle branch as an example.

[0057] Assume that ID10 is a newly added distribution box and has not been updated to the topology. In this case, the TTU can initiate topology identification, and incorporate the newly added node into the topology of the station.

[0058] The invention provides a method, which can start the topology identification process by the branch monitoring unit in the newly added distribution box, and incorporate it into the topology of the station area.

[0059] The topology identification process is started by sending a topology identification command through the downlink module.

[0060] After ID10 sends the topology identification command through the downlink module, since there is no lower distribution box, after waiting for a period of time, the topology identification command is sent through the uplink module, and the topology identification command includes ID10.

[0061] The ID6 branch monitoring...

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Abstract

The invention relates to a low-voltage distribution station topology identification method, which belongs to the field of distribution automation in electric power systems, in particular to a method for automatically identifying the low-voltage station topology. It is realized based on the TTU, the wave trap installed at the incoming line end in the distribution box and the branch monitoring unit; the branch monitoring unit includes an uplink module and a downlink module respectively installed at both ends of the wave trap; the uplink module and the upper level distribution box exchange topology To identify commands, the downlink module and the lower distribution box exchange topology identification commands; the topology identification commands are transmitted through the power line through the frequency band blocked by the notch filter; the TTU sends the topology identification commands, and each node forwards the commands and adds itself to the commands Information, TTU summarizes the returned topology identification commands, and completes topology identification according to the identity information in the commands. With the present invention, the communication mechanism of direction controllable communication lines and command forwarding is adopted, and the logic is clear; the topology identification command is limited to transmission between two distribution boxes, and the control is simple; in the summarized information, the position of the ID indicates the topology Subordinate relationship, TTU is easy to implement topology generation.

Description

technical field [0001] The invention belongs to the field of power distribution automation in power systems, in particular to a method for automatically identifying the topological structure of a low-voltage station area. Background technique [0002] In the distribution network, the premise of realizing the intelligent monitoring of station area distribution is that the topology structure of the station area is known. However, in the daily operation and maintenance management of power distribution, there are often cases where the connection relationship between households is not clear, especially for newly-built station areas. Some topologies cannot be directly obtained at all, requiring manual investigation, which requires a huge workload; when the actual topology changes, manually record these changes and update the topology data, or organize manpower to conduct on-site inspections to correct these errors. Manual census, due to the complex distribution of low-voltage dist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J13/00
CPCH02J13/00007H02J13/00028Y02B90/20Y02E60/00Y04S40/121
Inventor 范伟王东杰刘卫强孙佳伟马天祥刘滨滨沈晓娇李江峰王强刘海涛王鹏李春海翟志国王琳孟楠尹卫卫李飞
Owner 范伟
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