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Device and method for monitoring temperature and current carrying capacity of cable

A technology of flow monitoring and ampacity, which is applied in the field of electric power engineering, can solve problems such as the complexity of the operating environment, and achieve the effect of improving utilization rate, calculation accuracy and speed

Inactive Publication Date: 2012-09-19
JINING POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO +1
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  • Abstract
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  • Application Information

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Problems solved by technology

However, with the development of cities, these laying methods are more and more widely used, and the density of cable laying is getting higher and higher, and the operating environment becomes more complicated.

Method used

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  • Device and method for monitoring temperature and current carrying capacity of cable
  • Device and method for monitoring temperature and current carrying capacity of cable
  • Device and method for monitoring temperature and current carrying capacity of cable

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Embodiment Construction

[0054] The present invention will be further described below in conjunction with the accompanying drawings.

[0055] The present invention proposes a cable temperature and ampacity monitoring device and method, wherein a cable temperature and ampacity monitoring device includes a temperature sensing optical fiber 1, a signal processing host 2, and a cable dynamic ampacity monitor 3. The temperature sensing optical fiber 1 is connected to the input end of the signal processing host 2 , and the output end of the signal processing host 2 is connected to the cable dynamic ampacity monitor 3 .

[0056] The signal processing host in the present invention includes an LD pulse generation module 4, a WDM spectroscopic filter module 5, a photoelectric receiving converter 6, a signal amplification module 7, an A / D conversion module 8, a digital multi-point signal averager 9, and a storage module 10 And accumulator 11, wherein LD pulse generation module 4 is connected with WDM spectroscop...

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Abstract

The invention relates to the technical field of electric power engineering, in particular to a device and a method for monitoring the temperature and the current carrying capacity of a cable based on a distributed fiber temperature sensor and having function of monitoring the temperature and the current carrying capacity of the high-voltage cable on line. The device mainly comprises a temperature sensing fiber, a signal processing host and a cable dynamic current carrying capacity monitor, and is characterized in that the temperature sensing fiber is connected with an input end of the signal processing host, and output of the signal processing host is connected with the cable dynamic current carrying capacity monitor. Compared with the prior art, the device and the method have advantages that the fiber laid on the surface of the cable is used for measuring the temperature of the surface of the cable, test demonstration for measurement accuracy of the fiber and analysis for data of actual cases are carried out, the device is reasonable in structure, simple and convenient in operation, and high in measurement accuracy.

Description

Technical field: [0001] The invention relates to the technical field of electric power engineering, in particular to a cable temperature and ampacity monitoring device and method based on a distributed optical fiber temperature sensor that can realize on-line monitoring of the temperature and ampacity of high-voltage cables. Background technique: [0002] With the implementation of urban and rural power grid transformation, more and more power cables are laid. Although the underground high-voltage cable has the disadvantages of high cost, large investment, and inconvenient maintenance, it also has the advantages of reliable operation, not easily affected by the outside world, no need to erect poles, no floor occupation, no hindrance to the view, and beautifying the environment. When there are corrosive gases and flammable and explosive places, it is not suitable to erect overhead lines, laying cables is often the best choice. [0003] During the operation of the power cable...

Claims

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Application Information

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IPC IPC(8): G01K11/32G01R31/00
Inventor 刘伟生袁冰张存明徐斌孔平李靖强刘宋杰
Owner JINING POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO
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