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Temperature detection method and system for power cable conductor

A technology for conductor temperature and cable conductors, which is applied in the field of power cable conductor temperature detection methods and systems, and can solve problems such as complex calculations and inaccuracies

Inactive Publication Date: 2019-04-02
XUCHANG XJ SOFTWARE TECH +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a method and system for detecting the temperature of a power cable conductor to solve the problem of complex and inaccurate calculations when converting the cable surface temperature value into a cable conductor temperature value using a calculation model

Method used

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  • Temperature detection method and system for power cable conductor

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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] method embodiment

[0019] Step 1, such as figure 1 As shown, the tunnel contains three cables, namely L1, L2 and L3. In the tunnel or pipe gallery, temperature-sensing cables are laid longitudinally along each cable to detect the cable surface temperature value of each cable in the tunnel or pipe gallery. The cable surface temperature values ​​detected on the cable L1 are respectively: t′ 11 , t' 12 ,...,t' 19 , the cable surface temperature values ​​detected on the cable L2 are: t′ 21 , t' 22 ,...,t′ 29 , the cable surface temperature values ​​detected on the cable L3 are: t′ 31 , t' 32 ,...,t′ 39 . The detected cable surface temperature value of each cable is led to the temperature measurement host through wired or wireless mea...

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Abstract

The invention relates to a temperature detection method and system for a power cable conductor. The method comprises the following steps that: firstly, measuring the cable surface temperature value ofeach cable in one tunnel or pipe gallery; meanwhile, arranging a conductor temperature reference point of a conductor temperature in the cable in the cable; detecting the temperature value of the conductor temperature reference point, and the cable surface temperature value of the external corresponding position of the conductor temperature reference point so as to obtain a corresponding proportional relationship between the temperature value of the conductor temperature reference point and the corresponding cable surface temperature value; and according to the proportional relationship, combining with the cable surface temperature values of other positions to obtain the cable conductor temperature values of other positions. The method is simple, the calculated cable conductor temperaturevalue is high in accuracy and precision, and engineering application requirements are met.

Description

technical field [0001] The invention belongs to the technical field of power transmission and transformation equipment operation and management, and in particular relates to a method and system for detecting the temperature of a power cable conductor. Background technique [0002] Distributed optical fiber temperature measurement products for power cables mainly sense the surface temperature of the cable through the temperature-sensing optical cable laid longitudinally along the cable, and give an early warning of the temperature limit and sudden change at each point along the cable, and give the specific location. In recent years, with the rapid development of urban transmission lines into the ground, power cable distributed optical fiber temperature measurement products have been widely used in power cable online monitoring projects. [0003] In engineering applications, the distributed optical fiber temperature measurement of power cables exposes the problem of insufficie...

Claims

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Application Information

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IPC IPC(8): G01K13/00
CPCG01K13/00
Inventor 路光辉倪传坤张志伟兰五胜毛丽娜周水斌王志成王伟杰雍明超卢声杨芳
Owner XUCHANG XJ SOFTWARE TECH
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