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Cable overheating monitoring device and method

A monitoring device and overheating technology, which is applied to measurement devices, fault locations, and fault detection according to conductor types, etc., can solve the problems of easy folding of optical fibers, large influence, and high temperature resistance, so as to reduce monitoring costs, simple structure, and improve performance. The effect of monitoring accuracy

Inactive Publication Date: 2018-10-19
XI AN JIAOTONG UNIV
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Problems solved by technology

The infrared temperature measurement method requires that there should be no obstacles between the measured object and the measuring instrument, and is greatly affected by the external environment; the optical fiber is easy to break, easy to break, and not resistant to high temperatures, and the cost of the components of the optical fiber temperature measurement system is also high; The temperature measurement range of the temperature sensor is limited to a small space around the sensor, and a large number of temperature sensors are required to achieve comprehensive monitoring

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  • Cable overheating monitoring device and method
  • Cable overheating monitoring device and method

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Embodiment Construction

[0032] Specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although specific embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and is not limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0033] It should be noted that certain terms are used in the specification and claims to refer to specific components. Those skilled in the art should understand that they may use different terms to refer to the same component. The specification and claims do not use differences in nouns as a way of distinguishing components, but use differences in functions of components as a criterion for distinguishing. "Includes" or "comprises" mentioned throughout the spe...

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Abstract

The invention discloses a cable overheating monitoring device and method. The device comprises a cable trench (1) for accommodating a to-be-measured cable, a gas detection module (2), and a processingmodule (3). The gas detection module (2) is in gas communication with the cable trench (1) through a gas channel (4). The processing module (3) emits a start signal to a solenoid valve (5) so as to enable the cable trench (1) and the gas channel (4) to be in gas communication, also starts a vacuum pump (7) to controllably pump a preset amount of predetermined gas from the cable trench (1) to thegas channel (4), and emits a turn-off signal so as to turn off the solenoid valve (5) and the vacuum pump (7). A gas sensor (6) detects the concentration data of predetermined gas in the gas channel (4). A processing unit (8) compares the concentration data with a gas concentration threshold value. When the concentration data is greater than the gas concentration threshold value, the processing module (3) transmits an overheating alarm.

Description

technical field [0001] The invention relates to the technical field of electric equipment, in particular to a cable overheat monitoring device and a preparation method thereof. Background technique [0002] Cable is one of the most important power equipment in power production and transmission, and the safe operation of cables plays a very important role in the safe operation of the entire power grid. According to statistics, overheating faults of cables and cable joints account for about 80% of cable faults, so it is of great significance to monitor cable overheating faults. [0003] At present, the monitoring of cable overheating faults is generally realized by temperature measurement. There are mainly three temperature measurement methods: infrared temperature measurement, optical fiber temperature measurement and temperature sensor temperature measurement. These methods can indeed realize the monitoring of cable temperature. measurement, but there are also many shortcom...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08G01N33/00
CPCG01N33/0036G01R31/083
Inventor 杨爱军刘洋王小华刘雄荣命哲刘定新
Owner XI AN JIAOTONG UNIV
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