Low-voltage transformer area line-changing user relationship identification system and method

Abstract

The invention relates to a low-voltage transformer area line-changing user relationship identification system and method. The low-voltage transformer area line-changing user relationship identification system comprises a first identification device which is arranged at a distribution transformer outgoing line, second identification devices arranged at the wire inlet switch of each branch box, andthird identification devices arranged at the wire inlet switch of each meter box; the first identification device is used for acquiring transformer area identification codes, installation informationand harmonic data of all the second identification devices and all the third identification devices, screening out the corresponding second identification devices, and setting father nodes of the second identification devices as the first identification devices; and the first identification device is also used for screening out father nodes of all the third identification devices according to theharmonic data of the second identification devices and the third identification devices to form a transformer, line and user topological relation graph of the transformer area. According to the method, the characteristic curve of each harmonic is analyzed by adopting a harmonic analysis algorithm, so that the transformer area relationship can be identified more accurately.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a system and method for identifying relationship between line changers in a low-voltage station area. Background technique [0002] The lines in the low-voltage station area are intricate, and the distribution of user meters is irregular. It is often the case that two or more distribution transformers are close together. The ownership relationship of the energy meters is usually recorded manually, which can easily lead to file errors. The problem of the attribution of the meter has brought great trouble to the line loss statistics. [0003] At present, the low-voltage station area recognition instrument mainly adopts the carrier signal modulation method, installs the signal generating device at the place where the distribution transformer appears, injects the carrier signal on the bus, and installs the signal receiving device at the end of the low-voltage station area, that...

AI Technical Summary

Problems solved by technology

For lines with long distances and severe interference, the power carrier signal may not be transmitted, and the distribution transformer cannot completely isolate the carrier signal, and the signal may be coupled to another station area through the high-voltage side of the distribution transformer, making the station area identification inaccurate

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