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Ultrasonic technology based high-tension switch cabinet partial discharge location and early-warning system

A technology of high-voltage switchgear and partial discharge, which is applied in the direction of testing dielectric strength, etc., can solve the problems of inability to determine the position and failure to find faults, and achieve the effects of improving safety, improving work efficiency, and being convenient to use

Pending Publication Date: 2019-05-24
STATE GRID LIAONING ELECTRIC POWER RES INST +2
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AI Technical Summary

Problems solved by technology

The insulation test of the existing high-voltage switchgear adopts the method of regular inspection and fault test, and the fault cannot be found before the accident occurs, let alone the location of the impending accident point cannot be judged

Method used

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  • Ultrasonic technology based high-tension switch cabinet partial discharge location and early-warning system
  • Ultrasonic technology based high-tension switch cabinet partial discharge location and early-warning system
  • Ultrasonic technology based high-tension switch cabinet partial discharge location and early-warning system

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Embodiment Construction

[0026] Partial discharge positioning and early warning system of high voltage switchgear based on ultrasonic technology, characterized in that the system mainly includes DSP minimum system, ultrasonic sensor, signal amplification unit, signal filter unit, sound and light early warning unit, reset unit, start button, stop button, emergency Stop button, parameter setting unit, display drive unit, liquid crystal display, data export unit, communication interface and monitoring computer;

[0027] The measuring end of the ultrasonic sensor is connected to the grounding device of the high-voltage switchgear, the signal output end of the ultrasonic sensor is connected to the signal input end of the signal amplifying unit, and the signal output end of the signal amplifying unit is connected to the signal input end of the signal filtering unit The signal output end of the signal filtering unit is connected with the signal input end of the DSP minimum system, the signal input end of the ...

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Abstract

An ultrasonic technology based high-tension switch cabinet partial discharge location and early-warning system mainly comprises a DSP (digital signal processor) minimum system, an ultrasonic sensor, asignal amplifier unit, a signal filter unit, an acousto-optic early warning unit, a resetting unit, a start button, a stop button, an emergency button, a parameter setting unit, a display drive unit,a liquid crystal display screen, a data export unit, a communication interface and a monitoring computer; the DSP minimum system extracts partial discharge early ultrasonic characteristic signals detected by the ultrasonic sensor, identifies the ultrasonic signals, judges partial discharge faults and sends early warning to the faults. Based on the research on ultrasonic technology based high-tension switch cabinet partial discharge location and early-warning, fault of the switch cabinet can be detected in time, and safety of a power distribution network can be improved.

Description

technical field [0001] The invention relates to a high-voltage power distribution switchgear monitoring technology, in particular to a high-voltage switchgear partial discharge positioning and early warning system based on ultrasonic technology. Background technique [0002] Insulation faults seriously threaten the normal operation of high-voltage switchgear, and partial discharge is an important means to detect its insulation faults. The insulation test of the existing high-voltage switchgear adopts the method of regular inspection and fault test, and the fault cannot be found before the accident occurs, let alone the location of the impending accident point can not be determined. Contents of the invention [0003] Purpose of the invention: [0004] The invention provides a partial discharge localization and early warning system of a high-voltage switchgear based on ultrasonic technology, and its purpose is to solve the existing problems in the past. [0005] Technical ...

Claims

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Application Information

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IPC IPC(8): G01R31/12
Inventor 郎福成赵义松吴北平张红奎屈静段慧娟贾玥韩英田博文伊文龙
Owner STATE GRID LIAONING ELECTRIC POWER RES INST
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