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Insulation performance detecting system for metal sheath of power cable

A technology for power cables and detection systems, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve problems such as cable explosion accidents, increase of metal sheath circulating current, and accelerated aging of main insulation.

Inactive Publication Date: 2015-03-25
STATE GRID ZHEJIANG NINGBO FENGHUA POWER SUPPLY CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the outer sheath is damaged, the circulation of the metal sheath will increase, which will not only affect the current carrying capacity of the point, but also cause the metal sheath to heat up, which will damage the main insulation, accelerate the aging of the main insulation, and even cause a cable explosion accident

Method used

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  • Insulation performance detecting system for metal sheath of power cable
  • Insulation performance detecting system for metal sheath of power cable

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] refer to figure 1 , figure 1 It is a schematic structural diagram of an insulation detection system for a metal sheath of a power cable provided in an embodiment of the present application. The insulation detection system can realize automatic detection of the insulation of the metal sheath of a power cable. The insulation detection system includes: a collection device 11 , a signal sending device 12 , a signal receiving device 13 , a terminal device 1...

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Abstract

The invention discloses an insulation performance detecting system for a metal sheath of a power cable. The insulation performance detecting system comprises a collection device, a signal sending device, a signal receiving device, a terminal device, a display device and an alarm device. The collection device is used for collection operating parameters of the power cable and environmental parameters. The operating parameters include the circulation parameter, the connector temperature parameter, the tension parameter and the vibration parameter. The signal sending device is used for sending the operating parameters and the environmental parameters to the signal receiving device. The signal receiving device is used for sending the operating parameters and the environmental parameters to the terminal device. The terminal device is used for judging the insulation performance of the metal sheath of the power cable and generating an alarm driving signal when the power cable has an insulation error, and is also used for driving the display device to display all the parameters and the insulation performance of the metal sheath of the power cable. The alarm driving signal is used for driving the alarm device to give a fault alarm. The insulation performance detecting system can realize real-time detection of the insulation performance of the metal sheath.

Description

technical field [0001] The invention relates to the technical field of grid power supply, in particular to a system for detecting the insulation of a metal sheath of a power cable. Background technique [0002] How to improve the safety of power cable operation is a crucial link in the reliability of power system power supply. Both at home and abroad have invested a lot of money and energy in researching power cable performance and various protections. The basic structure of a power cable includes: a conductive electric core, an inner insulating layer surrounding the conductive electric core, a protective layer surrounding the insulating layer, and an outer sheath surrounding the protective layer. The function of the conductive cell is to transmit electric energy; the insulating layer is used for insulation and isolation, that is, the main insulation of the power cable; the protective layer protects the main insulation from external force damage and moisture intrusion. At p...

Claims

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Application Information

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IPC IPC(8): G01R31/02
Inventor 夏家峰张明达江斌毛以平何君杰方旭东
Owner STATE GRID ZHEJIANG NINGBO FENGHUA POWER SUPPLY CO LTD
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