Laser anti-external force damage early warning system for high-voltage line

Abstract

The invention discloses a laser anti-external force damage early warning system for a high-voltage line, and relates to the technical field of transmission line protection. The system comprises a laser band modulation signal transmitting part, a return type chromatographic change analyzing unit, a displacement detecting unit, a magnetic field monitoring module, an analysis module, a data acquisition module, a display module, an alarm unit, a laser detection module, a controller and a storage module, wherein the magnetic field monitoring module monitors the field strength around the high-voltage line in real time and transmits the magnetic field strength information to the controller. The system provided by the invention monitors the change of the magnetic field intensity around the high-voltage line in real time through the monitoring module for the magnetic field change, forms a micro-discharge over the ground through the foreign object by the high-voltage line when a foreign object enters the high-voltage line and exceeds the safe distance, and pre-alarms according to the preset parameter values when the magnetic field changes slightly to form a peak mutation to generate high, medium and low three high potentials of different numbers, so that the external equipment entering the site under the high-voltage line stops working, thereby reducing transmission line accidents caused by external force, and guaranteeing the safe operation of the power line.

Description

technical field [0001] The invention belongs to the technical field of transmission line protection, in particular to a high-voltage line laser anti-external force damage early warning system. Background technique [0002] High-voltage lines have a wide distribution area and long transmission distances. Ultra-high vehicles such as construction cranes work under or pass under high-voltage transmission lines, which not only endangers the personal safety of workers, but also threatens the safe operation of the power grid. Moreover, the phenomenon that the high-voltage power line is damaged by other external forces is also very prominent, which seriously affects the operation safety of the power grid. [0003] Aiming at the damage of high-voltage lines by external forces, video image monitoring is currently the main method. However, due to the need for real-time observation by personnel in the background, effective monitoring cannot be guaranteed for a long time. A laser anti-ex...

AI Technical Summary

Problems solved by technology

[0002] High-voltage lines are distributed in a wide area and have long transmission distances. Ultra-high vehicles such as construction cranes work under high-voltage transmission lines or pass under high-voltage transmission lines, which not only endangers the personal safety of workers, but also threatens the safe operation of the power grid.

Moreover, the phenomenon that the high-voltage power line is damaged by other external forces is also very prominent, which seriously affects the operation safety of the power grid.

[0003] Aiming at the damage of high-voltage lines by external forces, video image monitoring is currently the main method. However, due to the need for real-time observation by personnel in the background, effective monitoring cannot be guaranteed for a long time. A laser anti-external damage early warning system for high-voltage lines is now provided. By detecting the magnetic field of high-voltage lines The linear relationship between the change value of the intensity and the distance between the foreign object and the high-voltage line is used to determine the position distance between the foreign object and the high-voltage line, and the pre-alarm is carried out according to the preset distance parameter value, so as to reduce the transmission line accident caused by external force and enhance the reliability of power supply

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