Two-in-one sensor for measuring power frequency and high frequency signals of high-voltage cable

Abstract

The invention relates to a two-in-one sensor for measuring power frequency and high-frequency signals of a high-voltage cable, which comprises a sensor shell, a quick sensor fixing bracket, a power frequency signal sensor, a high-frequency traveling wave signal sensor and a signal transmission line, one ends of the two semicircular hollow shells are rotationally connected with each other, and the other ends of the two semicircular hollow shells are detachably connected with each other, so that an openable annular shell is integrally formed; the power frequency signal sensor and the high-frequency traveling wave signal sensor are both arranged in the sensor shell and are led out through signal transmission lines; the middle of the sensor shell is used for allowing a high-voltage cable to extend in, and the sensor rapid fixing support is installed on the outer side of the sensor shell and used for abutting against the high-voltage cable in the middle of the sensor shell. Compared with the prior art, the cable fault monitoring device has the advantages that the number of sensors needing to be installed on the cable fault monitoring device is reduced, installation steps are simplified, installation is rapid, and the cable fault monitoring device can adapt to cables of different thicknesses.

Description

technical field [0001] The invention relates to the field of cable running state monitoring equipment, in particular to a two-in-one sensor for measuring high-voltage cable power frequency and high-frequency signals. Background technique [0002] With the rapid development of urban power grids, the scale of high-voltage cable lines continues to expand. Affected by factors such as cable quality, construction environment, insulation aging, and external force damage, cable line failures are inevitable, and the difficulty of cable line operation and maintenance management is gradually increasing. In recent years, power cable line failures have occurred frequently, and the safe operation of the power grid is facing severe challenges. Cable faults are highly concealed, sudden faults are very harmful, and fault finding takes a long time. If both ends of the cable are GIS equipment, it will take longer cooperation time and cost, which is not conducive to rapid troubleshooting and re...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the above-mentioned prior art that each electrical quantity of the cable operation status monitoring equipment requires a separate sensor for measurement, resulting in a large number of sensors for the cable online monitoring equipment and complicated transmission line routing. Two-in-one sensor for high-voltage cable power frequency and high-frequency signal measurement

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