Thermocouple arrangement method for measuring axial temperature distribution of intermediate joint of high-voltage cable
A technology for high-voltage cables and temperature distribution, which is applied to measuring devices, measuring heat, and parts of thermometers, etc., can solve problems such as differences in temperature distribution, and achieve the effect of reducing accidental errors and reducing inherent errors
Active Publication Date: 2018-07-31
SOUTH CHINA UNIV OF TECH
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Problems solved by technology
In addition, due to the functional requirements of the intermediate joint, the materials of different parts are different, so there are obvious differences in temperature distribution in the axial direction where the intermediate joint is installed.
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Embodiment 1
[0026] In order to comprehensively analyze the relationship between temperature distribution, current carrying capacity and interface pressure, this embodiment provides a method for temperature measurement with two-layer arrangement on the same section. The T-type thermocouple point temperature measurement performance is excellent, the precision is high, and the arrangement is convenient, so it is selected as the temperature measurement sensor.
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The invention discloses a thermocouple arrangement method for measuring the axial temperature distribution of an intermediate joint of a high-voltage cable. In view of the axial difference of temperature distribution at different positions of a contact interface between a cable body and the intermediate joint, a fixed point thermocouple arrangement method for studying the axial temperature variation law is provided. From the selection and determination of specific thermocouple positions, the determination of the number of temperature measuring points, lead arrangement, the determination of hole depth, and the specific arrangement of the thermocouple, the method comprehensively measure the temperature distribution at positions of the intermediate joint of the cable, reduces the accidental error and the inherent error by repeating experiments to take an average, and lays an important experimental foundation for studying the relationship between the temperature distribution of the intermediate joint and the current carrying capacity and interface pressure.
Description
technical field [0001] The invention relates to the technical field of temperature measurement at the installation interface of a cable intermediate joint, in particular to a thermocouple arrangement method for measuring the axial temperature distribution of the interface between a high-voltage cable body and an intermediate joint. Background technique [0002] With the rapid acceleration of urbanization, the demand for electric energy, the most widely used energy in today's era, has increased significantly. As a result, power cables as electric energy carriers have been widely used in urban transmission networks to meet the needs of every household, The needs of all walks of life. At the same time, the rapid increase in urban electricity consumption has brought increasingly severe challenges to the safe and continuous operation of power systems, especially cable lines: the current carrying capacity of power cables in the same circuit has increased year by year, and some eve...
Claims
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IPC IPC(8): G01K7/02G01K1/14G01K3/04
CPCG01K1/14G01K1/143G01K3/04G01K7/02
Inventor 刘刚韩卓展范梓麒
Owner SOUTH CHINA UNIV OF TECH
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