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Judgment Method of Topology Recognition Rate Based on Line Loss

A technology of line loss rate and recognition rate, applied in instruments, measuring devices, AC network circuits, etc., can solve problems such as lack of a method to verify the accuracy of automatic topology identification, inability to clarify which branch the meter box belongs to, and relationship errors.

Active Publication Date: 2022-02-18
JIANGSU INTELEVER ENERGY TECH CO LTD
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Problems solved by technology

[0002] At present, the information automation level and management level of my country's high-voltage power grid are relatively high. Compared with low-voltage power distribution network, there are many types of electrical equipment, complex power consumption behavior of users, and low level of information automation.
It manifests as chaotic file management of power distribution equipment, mainly reflected in: (1) The distribution transformer-meter box relationship is wrong, and the meter box is divided into areas that do not belong to it, resulting in file errors; (2) The relationship between household line transformers is not clear , it is impossible to tell which branch the table box belongs to
Automatic topology recognition can automatically identify the distribution transformer-meter box and the sub-branch relationship of the meter box, but there is no method to verify whether the automatic topology recognition is accurate

Method used

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  • Judgment Method of Topology Recognition Rate Based on Line Loss
  • Judgment Method of Topology Recognition Rate Based on Line Loss
  • Judgment Method of Topology Recognition Rate Based on Line Loss

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Embodiment Construction

[0025] now combined with figure 1 and 2 The present invention is described in further detail.

[0026] The specific steps of the method for judging the topology recognition rate based on line loss of the present invention are as follows (see figure 2 ):

[0027] Step 1: Obtain the results of automatic topology recognition in the distribution transformer area, and divide the topology results according to the levels of distribution transformer-branch box-meter box. figure 1 A schematic diagram is given, and the identification results are distribution transformers, outlet cabinets, branch boxes, and meter boxes. The topology identification results are shown in the appendix figure 1 .

[0028] Step 2: Obtain the power of the branch nodes. The branch nodes include the power data of the low-voltage side of the distribution transformer, the outgoing line of the outlet cabinet, and the incoming line of the meter box. The power data collected by each node is shown in Table 1.

[...

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Abstract

The invention relates to a method for judging topology recognition rate based on line loss, which belongs to the technical field of smart grid, including obtaining the result of automatic topology recognition in the distribution transformer station area, and calculating the topology result according to distribution transformer-outlet cabinet-branch box-table The level division of the box; obtain the power data of the low-voltage side of the distribution transformer, the outgoing line of the outlet cabinet, and the incoming line of the meter box; calculate the line loss rate from the low-voltage side of the distribution transformer to the meter box, and calculate the line loss rate from the outlet cabinet to the meter box. Determine whether the current line loss is within the preset range. If it is within the preset range, judge whether all the branch lines have been judged. If the judgment is completed, calculate the accuracy of topology recognition; if it exceeds the preset range, it is judged as abnormal. Classify and judge the abnormal line loss rate, and record the topology. The invention is directly used for judging whether the topology of the low-voltage station area is accurate, and provides important basis and scientific support for whether the automatic topology recognition of the low-voltage station area is accurate.

Description

technical field [0001] The invention relates to a method for judging topology recognition rate based on line loss, which belongs to the technical field of smart grid. Background technique [0002] At present, the level of information automation and management of high-voltage power grids in my country is relatively high. Compared with low-voltage power distribution networks, there are many types of electrical equipment, complex power consumption behaviors of users, and low levels of information automation. It is manifested as chaotic file management of power distribution equipment, mainly reflected in: (1) The relationship between distribution transformers and meter boxes is wrong, and the meter boxes are divided into areas that do not belong to them, resulting in file errors; (2) The relationship between household line transformers is not clear , it is impossible to know which branch the table box belongs to. Automatic topology recognition can automatically identify the dis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00G01R31/00G01R22/06
CPCH02J3/00G01R31/00G01R22/06
Inventor 邓士伟周璇倪淏
Owner JIANGSU INTELEVER ENERGY TECH CO LTD
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