Electrical topology identification system and method for low-voltage station area for fast fault location

Abstract

Low-voltage station area electrical topology identification system and method for fast fault location. At present, the principle of station area identification often uses a short-term short circuit between the phase line and the neutral line to modulate the voltage zero-crossing point signal. This scheme has long phase and neutral lines. The risk of time short circuit may cause equipment burnout or cause power failure in the station area. The invention includes: collection unit: installed at the outlet of the low-voltage side of the distribution transformer; identifying and judging the station area by detecting the characteristic signal on the bus, and automatically forming the electrical topology logic relationship by analyzing the logic relationship of each node; distribution unit: wirelessly connected with the collection unit , which is located at the branch point or the side of the meter box. This technical solution can describe the electrical topological logic relationship of the station area without power outages, find out the users under each transformer, realize the automatic identification of the relationship between households and transformers, and can truly reflect the basic data of the distribution station area, becoming the realization of the power grid. The basis of intelligent management.

Description

technical field [0001] The invention relates to an electrical topology identification system and method, in particular to a low-voltage station area electrical topology identification system and method for rapid fault location. Background technique [0002] At present, the transformers in the low-voltage station area have the following problems: 1) The wiring of users in the old station area is complicated, and the information is incomplete or not updated; 2) The new station area is adjacent to each other, and there are often multiple transformers in the same power distribution room. Nearly, it is the same group of high-voltage busbars, and it is impossible to correctly determine the ownership of the user's meter station area; 3) The electrical topology data of the low-voltage station area is even more incomplete, and the update is not timely. When a fault occurs, it is impossible to quickly locate the fault. [0003] Therefore, there is a need for a device and method that c...

AI Technical Summary

Problems solved by technology

[0004] The automatic generation of the electrical topological relationship of the station area is currently not applied to realize the identification of the station area. At present, the principle of station area identification often uses a short-circuit short circuit between the phase line and the neutral line to perform voltage zero-crossing signal modulation. This scheme has a long phase line and a neutral line. Risk of time short circuit, causing equipment to burn out or cause power failure in the station area

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