Power cable joint temperature measuring device

Abstract

The invention relates to a power cable joint temperature measuring device which comprises the components of a temperature measuring sensor module, a data receiving and processing module, a wireless communication module, a display module, a storage module, an alarm module and a power module. The temperature measuring sensor is arranged on the grounded part of the outer conductive layer of the power cable joint. Data which are measured by the temperature measuring sensor are transmitted to the data receiving and processing module through the wireless communication module for being processed. The storage module is used for storing failure information. The display module is a projection type capacitive touch screen and can display a cable joint temperature result which is obtained through monitoring. Furthermore the display module can set a temperature monitoring mode through a screen menu and inquires a historical record. The power module supplies electric power for the whole system. When overhigh temperature of the cable joint occurs, a monitoring result is displayed on the screen, and simultaneously the fault information is transmitted to the alarm module. Related personnel can understand the fault condition timely and accurately through the screen and the alarm information, thereby facilitating maintenance and emergency repair of the cable.

Description

technical field [0001] The invention belongs to the technical field of power supply, and in particular relates to a temperature measuring device for a power cable joint. 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 level of oper...

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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