Method and system for on-line generation and real-time monitoring of physical topology in low-voltage station area

A technology of physical topology, low-voltage station area, applied in information technology support systems, sustainable buildings, electrical components, etc., can solve the problems of increasing the chaos of the station area, manual sorting, and heavy workload, and achieve economic benefits and The effect of social benefits, improving work efficiency and reducing management costs

Active Publication Date: 2019-07-12
SHANDONG SENTER ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The basic information of the station area is incomplete; for some old station areas, due to the long period of time, the original saved data was lost, or the basic information was not updated in time after the later line reconstruction, resulting in a mismatch between the data and the actual line
[0004] 2. Users privately connect power lines, especially at the junction of the station area, which is more likely to cause crossover, which aggravates the confusion of the line in the station area
[0008] The simple use of power carrier communication has two obvious disadvantages: in the case of adjacent substations sharing high voltage, common ground, and common cable trench, it is easy to cause misjudgment due to the cross-connection of carrier signals; the power carrier signal is a high-frequency signal, attenuation Seriously, users with long distances and large line interference cannot be identified; although the method of combining pulse characteristic current signals and power carrier signals improves the reliability of identification, the operation is complicated and the workload is heavy
During the on-site test, the staff need to manually test the relationship between the measured point and the distribution transformer in the station area. For the distribution transformer station area with complex lines, when determining the branch relationship of the line, the workload of the on-site personnel is heavy, it takes a lot of time, and it cannot be automatically generated. The line connection relationship needs to be sorted out manually
This offline test method also cannot realize real-time monitoring of the topology of the station area

Method used

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  • Method and system for on-line generation and real-time monitoring of physical topology in low-voltage station area
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  • Method and system for on-line generation and real-time monitoring of physical topology in low-voltage station area

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Such as Figure 1-2As shown, taking the tree connection as an example, the core equipment for line connection in the low-voltage station area mainly includes: distribution transformers, outlet cabinets, branch boxes, and user meter boxes. The branch box is the intermediate equipment of the line in the station area, and the outlet cabinet is the head-end equipment of the line in the station area. figure 1 The middle black thick solid line represents the busbar (A, B, C, N three-phase four-wire), and the black thin solid line represents the single-phase line distributed to the user meter box (L, N two-wire line of any phase of A, B, C ), the online generation and real-time monitoring method of the physical topology of the low-voltage platform area of ​​the present invention, comprising:

[0040] Set signal generation units at the end equipment and intermediate equipment of the line in the station area, set up signal detection units at the intermediate equipment and head-...

Embodiment 2

[0054] Such as image 3 As shown, on the basis of Embodiment 1, this embodiment integrates the signal generation unit and the signal detection unit provided by each intermediate device of the line in the station area, collectively referred to as the line monitoring unit, and the online generation and real-time monitoring method of its physical topology Same as Example 1.

Embodiment 3

[0056] Take the tree connection as an example, such as figure 1 As shown, the core equipment connected to the line in the low-voltage station area mainly includes: distribution transformers, outlet cabinets, branch boxes and user meter boxes. Among them, the user meter box is the terminal equipment of the station area line, and the cascaded branch box is the center equipment, the outlet cabinet is the head-end equipment of the line in the station area, such as figure 2 As shown, this embodiment provides an online generation and real-time monitoring system for the physical topology of a low-voltage station area, including a signal generation unit, a signal detection unit, and a data concentration unit, and the signal generation unit is located at the line end equipment and intermediate equipment in the station area , the signal detection unit is set at the line intermediate equipment and head-end equipment in the station area, the data concentration unit is set at the low-volt...

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Abstract

The invention relates to the technical field of detection of low-voltage distribution network lines, in particular to a method for online generation and real-time monitoring of the physical topology of a low-voltage station area. A signal generation unit, a signal detection unit, and a data transmission unit are reasonably deployed on the line in the station area. The data transmission unit and Power supervision platform communication; after sending the topology online generation command, generate the physical topology of each branch line one by one, and merge it into the physical topology of the entire low-voltage station area and save it; compare the generated physical topology with the previously stored one, if different, mark the change position The present invention also provides a low-voltage station area physical topology online generation and real-time monitoring system, a signal generating unit is set at the end of the line in the station area and at the intermediate equipment, a signal detection unit is set at the middle of the line in the station area and at the head-end equipment, and at the distribution The low-voltage side of the electric transformer is equipped with a data transmission unit; the invention can generate the physical topology of the line in the station area online and monitor it in real time, discover changes in the line topology in time, and ensure the reliable operation of the power system.

Description

technical field [0001] The invention relates to the technical field of detection of low-voltage distribution network lines, in particular to a method and system for on-line generation and real-time monitoring of the physical topology of a low-voltage station area. Background technique [0002] In recent years, with the rapid development of the power grid, the hardware facilities in the distribution transformer area have been greatly improved. The marketization of the power system has put forward more refined management requirements for the power management department. The need to reduce consumption and loss is more urgent. It has become an important indicator to reduce the line loss rate of the station area and make the line loss rate of the station area meet the national standard. In line loss management, it is the most difficult to manage by station area and phase, mainly reflected in: [0003] 1. The basic information of the station area is incomplete; for some old stat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J13/00
CPCH02J13/00007Y04S40/121Y02B90/20Y02E60/00
Inventor 李忠平文刚蔡富东岳维超马景行崔利刘在平许宝进唐坤王成
Owner SHANDONG SENTER ELECTRONICS
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