Three-dimensional temperature measurement wireless sensor for power cable joint

Abstract

The invention discloses a three-dimensional temperature measurement wireless sensor for a power cable joint. The sensor comprises a three-dimensional temperature measurement watchband and a battery bin connected to the watchband, the three-dimensional temperature measurement watchband comprises an elastic plastic annular band, different types of temperature measurement probe sensors and an electronic bin, the elastic plastic annular band is connected to the two sides of the electronic bin respectively, a plurality of sensor groups are distributed on the inner side surface of the elastic plastic annular band at equal intervals in a full-length range, each sensor group is composed of a plurality of temperature measurement probe grooves which are arranged at equal intervals, all the temperature measurement probes form a temperature measurement probe array on the surface of the inner side of the elastic plastic annular band, a temperature measurement probe sensor is arranged in each temperature measurement probe groove, the temperature measurement probe sensors are connected to the electronic bin through wires, and the electronic bin is connected to the battery bin through a wire. According to the invention, accurate on-line monitoring of the temperature of power cables can be realized conveniently and efficiently.

Description

technical field [0001] The invention relates to a three-dimensional temperature measuring wireless sensor for power cable joints used in the field of on-line monitoring of power cables. Background technique [0002] On-line monitoring of power cable lines is currently the preferred technical measure to discover local hot spots of power cable lines, detect the insulation status of operating lines, and calculate the ampacity of conductors. Among them, since the conductor does not have ideal electrical conductivity when the cable is running, the loss caused by resistance will be manifested through heat, so the temperature monitoring of the conductor can directly reflect whether the cable is running normally and whether there is a safety hazard. The conductor operating temperature can only be estimated from the sheath temperature or the surface temperature. If the cable is installed underground, the soil and backfill around the cable will hinder the heat dissipation of the cabl...

AI Technical Summary

Problems solved by technology

But for the power supply and distribution cables that have been built, it is very difficult to lay optical fibers, and there are also problems that the ambient temperature such as water immersion affects the temperature of the cable sheath; at the same time, for the measurement of multi-branch cable lines, the installation and operation and maintenance workload required for optical fibers Big

Therefore, optical fiber measurement is more suitable for long-distance cable temperature measurement with fewer line branches, and it is not suitable for application scenarios where cables are densely distributed and branched in cities

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