Wireless digital power supply line fault alarm device and method

Abstract

The invention relates to the technical field of power line detection, in particular to a wireless digital power supply line fault alarm device and a wireless digital power supply line fault alarm method. The device comprises a signal pick-up unit, a processing unit, and an indicating unit, and is characterized in that: the signal pick-up unit comprises a conductive rubber block, a magnetic permeability material and a coil; the conductive rubber block and the magnetic permeability material form a button clamping structure; the coil is wound on the magnetic permeability material to form a current transformer for picking up current and voltage signals; the processing unit comprises a power-off detection unit, a power supply detection unit, a short-circuit detection unit and a grounding detection unit; and the indicating unit comprises a flop unit, an indicator light unit and a radio-frequency unit. The system and the method have the advantages that: 1) wireless signals are uploaded to a control center, so fault points can be accurately positioned in real time; 2) the labor intensity is lightened, and the fault points are quickly transmitted to the control center; and 3) the indication of faults is obvious, and the system and the method are suitable for wide promotion and have important effect of ensuring safe operation of a power grid.

Description

technical field The invention relates to the technical field of power line detection, in particular to a wireless digital power supply line fault alarm device and method for medium and high voltage power line fault indication and alarm. Background technique With the rapid development of the national economy, the scale of the power system continues to expand, and the safe and stable operation of power transmission and distribution lines plays a decisive role in the power system. After a line fault occurs, it is of great significance to find out the fault point and eliminate the fault as soon as possible for the safe, stable and economical operation of the power system. At present, the traditional line fault alarm devices for line fault detection include on-site fault addresser and small current grounding line selection system. The field type fault finder can only detect short-circuit faults to detect short-circuit faults and about 40% ground faults; the small current ground...

AI Technical Summary

Problems solved by technology

The traditional fault finding methods do not have the function of uploading fault information, and do not have the function of automatic fault location. Once a fault occurs on the line, it needs to be manually searched along the line, which increases the difficulty and time of fault finding. However, the automatic fault location can be realized by using the distribution network automation system , but the cost is too high to promote

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