Cable intermediate joint temperature rise on-line monitoring device and method based on temperature difference method

Abstract

The invention relates to a cable intermediate joint temperature rise on-line monitoring device and method, and mainly solves the problems of waste of manpower, material resources and financial resources, low monitoring reliability, poor real-time performance, and being difficult to find equipment safety hazards of a conventional cable joint manual inspection method in the prior art. The device comprises a temperature sensing module, a microprocessor and a power supply circuit. The method is characterized by carrying out screening on the detected temperature and calculating the difference valuebetween the temperature value and environmental temperature value to judge whether the temperature rise is normal. The method and device can accurately obtain the cable joint temperature and can carry out real-time monitoring on the cable joint temperature, thereby ensuring health and safe operation of a cable.

Description

technical field [0001] The invention relates to the field of electric equipment, in particular to an on-line monitoring device and method for the temperature rise of a cable intermediate joint. Background technique [0002] Due to the influence of production quality, installation quality, running time, frequency of use and working environment of power equipment, the contact at the installation place is unreliable, and the temperature rise exceeds the allowable range stipulated by the state, which makes the cable terminal insulation aging and even breakdown damage. as a result of. The temperature of the middle joint of the power cable is an important parameter reflecting its operating state. The direct cause of the temperature rise of the cable joint is the long running time of the joint, the crimping joint is not tight, and the contact resistance is too large. The phenomenon of overheating and burning through the insulation caused by the long-term operation of the joint is...

AI Technical Summary

Problems solved by technology

[0006] The invention mainly solves the waste of manpower, material resources and financial resources in the traditional manual inspection method of cable joints in the prior art, and the monitoring reliability is low, the real-time performance is poor, and it is difficult to find potential safety hazards of equipment in time, and a cable based on the temperature difference method is provided. The on-line monitoring device and method for the temperature rise of the intermediate joint can accurately obtain the temperature of the cable joint and monitor it in real time to ensure the healthy and safe operation of the cable

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