Electrical topology identification system of low-voltage court and working method thereof

Abstract

The invention relates to an electrical topology identification system of a low-voltage court and a working method thereof. At present, short-time short circuit occurrence between a phase line and a midcourt line is employed based on the existing court identification principle and thus voltage zero-crossing signal modulation is realized; however, a problem of the court faulted power interruption orequipment burning caused by the long-time short-circuit risk of the phase line and the midcourt line is caused. The system is composed of a collecting unit and a distribution unit. The collecting unit is arranged at a low-voltage side outlet of distribution transform; court identification and determination are carried out by detecting a feature signal on a bus; and a logic relation among all nodes is analyzed and an electrical topological logic relationship is formed automatically. The distribution unit connected with the collecting unit wirelessly is arranged a branch point or a meter box side. Under the circumstance that no power interruption is needed, the electrical topological logic relationship of the court is depicted, the user under each transformer is checked clearly, and thus the household changing relationship is identified automatically. Therefore, the basic data under the distribution court can be reflected truly and become the foundation for realizing the intelligent management of the grid.

Description

technical field [0001] The invention relates to an electrical topology identification system and method, in particular to an electrical topology identification system for a low-voltage station area and a working method thereof. 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. Recently, 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 structure data of the low-voltage station area is even more incomplete, and the update is not timely. When a fault occurs, it cannot be quickly located. [0003] Therefore, there is a need for a device and method that can describe the electrical topology logic relationship of the station area without ...

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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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