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Online monitoring system for temperature and current carrying capacity of power cable

A technology for power cables and monitoring systems, used in thermometers, measuring electrical variables, thermometers with electrical/magnetic components that are directly sensitive to heat, etc., can solve problems such as deterioration of cable insulation performance, necessary power outages, and obstacles to power supply reliability levels. , to achieve the effect of improving work reliability and real-time operating status

Inactive Publication Date: 2014-01-22
STATE GRID CORP OF CHINA +1
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Problems solved by technology

The current regular preventive test has many disadvantages: first, the test must be conducted with a power outage, which constitutes an obstacle to improving the reliability of power supply; second, too many tests accelerate the deterioration of the cable insulation performance

Method used

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  • Online monitoring system for temperature and current carrying capacity of power cable

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Embodiment Construction

[0019] see figure 1 , an online monitoring system for power cable temperature and ampacity, which includes a data collector host, a current detection device, a temperature sensor, a T-connector and a data management server terminal; the current detection device includes a sheath circulation current detector and an operating current detector; the current detection device and the T-type connector are all connected to the data collector host, and each T-type connector is connected with a plurality of temperature sensors; the data collector host is connected to the data collector through a communication network The data management server terminal is connected.

[0020] The sheath circulating current detector, operating current detector and temperature sensor collect cable operating parameter values ​​such as cable sheath circulating current, operating current and cable surface temperature in real time, and transmit them to the data collector host in a centralized manner. The moni...

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Abstract

The invention discloses an online monitoring system for temperature and current carrying capacity of a power cable. The online monitoring system comprises a data acquisition device host, a current detection device, temperature sensors, T-shaped connectors and a data management server terminal, wherein the current detection device comprises a protection layer circulating current detector and an operating current detector; the current detection device and the T-shaped connectors are connected with the data acquisition device host and a plurality of temperature sensors are connected onto each T-shaped connector; and the data acquisition device host is connected with the data management server terminal through a communication network. The online monitoring system for the temperature and the current carrying capacity of the power cable disclosed by the invention has the advantages that the operating state of the high-voltage cable can be determined in real time, the working reliability of the power cable is improved and the like.

Description

technical field [0001] The invention relates to an on-line monitoring system for electric cable temperature and carrying capacity. Background technique [0002] As modern urban construction puts forward higher requirements for power transmission, the use of high-voltage cables has risen sharply, and it is extremely important to ensure the safe operation of high-voltage cables. The maintenance and management of cable lines through the cable online monitoring system has important guiding significance for the production, construction, operation and management of the power supply department. [0003] Unlike overhead lines, due to the strict operating conditions of cable lines and the complex environment (such as laying methods, ambient temperature, etc.), this has brought many difficulties to cable operation and maintenance. Usually, the following operation, maintenance and overhaul tests are required for high-voltage cable lines: 1) Regular or irregular inspections, in order t...

Claims

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Application Information

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IPC IPC(8): G01K7/00G01R19/00
Inventor 侯凤岭张谢夏磊关少卿何飞刘登兵
Owner STATE GRID CORP OF CHINA
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