Underground cable monitoring method

An underground cable and electricity technology, applied in the direction of measuring electricity, measuring devices, and measuring electrical variables, etc., can solve problems such as potential safety hazards, and achieve the effects of improving accuracy and reliability, ensuring accuracy, and ensuring electricity safety

Active Publication Date: 2018-05-04
福建中电合创电力科技有限公司
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  • Abstract
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Problems solved by technology

Therefore, when the temperature of the cable is high, the current flow value of the cable is less than the basic flow data of the national standard, but greater than the actual maximum safe carrying flow value of the cable at this temperature, so there will be potential safety hazards

Method used

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  • Underground cable monitoring method

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Embodiment 1

[0064] Please refer to figure 1 , a monitoring method for underground cables, comprising steps:

[0065] S0, the temperature sensor detects the current temperature t of the underground cable at its location, and determines the identification of the underground cable, and the temperature sensor sends the current temperature t and the identification of the underground cable to the information repeater;

[0066] The information repeater obtains the historical data of the underground cable according to the identification of the underground cable, determines a temperature threshold T according to the historical data, and judges whether the current temperature t is less than the temperature threshold T, and if so, Then the identification of the underground cable and the current temperature t are packaged into a data packet and sent; otherwise, the identification of the underground cable, the current temperature t and the current alarm state are packaged into a data packet and sent; ...

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Abstract

The invention provides an underground cable monitoring method. A temperature threshold is dynamically adjusted in real time according to practical use conditions of an underground cable, the current flow of the underground cable is calculated according to the current temperature of the underground cable in real time, whether warning or risk warning is performed or not is determined through electric quantity according to the current flow and state-specified current maximum permissible flow, accuracy of the temperature threshold is ensured, the cable flow at the current cable temperature can beautomatically analyzed, warning or risk warning is performed according to national standards, underground cable monitoring accuracy and reliability are improved, and electrical safety is guaranteed.

Description

technical field [0001] The invention relates to the field of electric environment monitoring, in particular to a method for monitoring underground cables. Background technique [0002] Underground cables are immune to rain and snow, do not occupy the ground, are anti-interference, and have a low failure rate. However, its pre-embedding is very troublesome, the cost is high, and it is difficult to deal with if a failure occurs. In addition, high voltage will be generated after cables are buried underground, which will have a certain impression on underground oil and gas pipelines, biological and communication lines. Therefore, it is a difficulty and a key point to effectively detect the operation status of underground cables. [0003] The existing technology is to detect the temperature of the cable joint online and upload it to the monitoring system. According to the set temperature threshold, the current temperature is compared and an overheating alarm is set. In this wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 李雪吴裕寿林潮龙施明晃
Owner 福建中电合创电力科技有限公司
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