Power cable joint automatic detection device and method

Abstract

The invention relates to the technical field of power cable automatic detection, and specifically provides a power cable joint automatic detection device and method. Comprising a femtosecond pulse laser, a first dispersion compensation optical fiber, a first adjustable attenuator, a first polarization-maintaining transmission optical fiber, a bias high-voltage source, a terahertz transmitting antenna, a terahertz receiving antenna, a data acquisition card, a computer software system, a second polarization-maintaining transmission optical fiber and a second adjustable attenuator, an optical fiber optical delay line and a second dispersion compensation optical fiber; according to the technical scheme provided by the invention, automatic focusing scanning imaging can be realized, so that health state diagnosis of the cable joint is realized, and health active prevention and fault diagnosis of the position of the cable joint are finally obtained.

Description

technical field [0001] The invention relates to the technical field of automatic detection of power cables, in particular to an automatic detection device and method for power cable joints. Background technique [0002] With the rapid development of social economy, urban construction and social development are inseparable from the support of electric energy. Social development has higher and higher requirements for the capacity of power grids, the stability of power supply lines, and the safety of power cables. The safety of cables is a key factor affecting the safe and stable operation of power grids. In the transmission process of the power system, a large number of insulating materials are involved in power equipment such as transmission lines and power facilities to ensure the safety and efficiency of the power transmission process. In addition to the insulation properties of power cables, typical insulation equipment also includes power cable line insulators. , Composi...

AI Technical Summary

Problems solved by technology

However, this design has obvious fragility while achieving good space compactness and easy maintenance. Once a cable fault deteriorates and causes a fire, it may quickly damage the surrounding cables and building structures, resulting in the paralysis of all lines in the pipeline.

Underground high-voltage cable projects are expensive, usually tens of millions of yuan per kilometer, and fires can cause major direct property losses, and the repair period is long

Moreover, the underground environment of the city is relatively complex, and the threat of cable fires to other municipal pipelines, common trenches, subways, including ground facilities and personnel safety cannot be ruled out.

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