Power cable temperature measuring device and temperature measuring method

Abstract

The invention discloses a power cable temperature measuring device. The power cable temperature measuring device comprises an embedded processing unit, a temperature measuring sensor unit, a data receiving and processing unit, a communication module, a display module, a storage unit, an alarm device and a supercapacitor power supply group; data measured by the temperature measuring sensor unit arefed into the data receiving and processing unit through the communication module to process; the data receiving and processing unit feeds the processed data into the embedded type processing unit; when monitoring that the temperature is abnormal, the embedded type processing unit sends out alarm information to the alarm device and stores failure information into the storage unit; and the displaymodule is a projection type capacitive touch screen, can display a monitored cable joint temperature value and a processing result, and can set the temperature monitoring condition through a screen menu and inquire historic record. The invention also provides a temperature measuring method of the power cable temperature measuring device. The power cable temperature measuring device and the temperature measuring method have the beneficial effects of high reliability, full functions and capabilities of effectively reducing failure occurrence times and reducing failure loss.

Description

technical field [0001] The invention relates to the technical field of power supply, in particular to a power cable temperature measuring device and a temperature measuring method. Background technique [0002] Power cables are cables used to transmit and distribute electric energy in power systems. Compared with overhead line power supply, power cable power supply has high power transmission reliability, small insulation distance between lines, less land occupation, no floor space, and strong confidentiality. And it is easy to greatly improve the power supply capacity and so on. Therefore, with the development of urbanization and urban power grids, power cables are widely used. However, in the process of use, power cables also have disadvantages such as high cost, difficult fault detection and maintenance, high technical requirements for power cable accessories (intermediate joints, terminal joints, etc.), and on-site construction operations require staff to have a high le...

AI Technical Summary

Problems solved by technology

In addition, if the current carrying capacity of the power cable is too large, the working temperature of the cable core will exceed the allowable value, which will shorten the insulation life of the cable; if the current carrying capacity is too small, the copper or aluminum core materials will not be fully utilized. The temperature of the core conductor can be calculated by the real-time measured temperature value to achieve the purpose of load regulation and dynamic capacity increase

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