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A safety management and control system for line capacity increase based on pre-test

A safety control and pre-test technology, applied in the electric power field, can solve problems such as the lack of effective cable capacity increase technology, and achieve high efficiency

Active Publication Date: 2022-05-17
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JIAXING POWER SUPPLY CO +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the current lack of effective cable capacity increase technology

Method used

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  • A safety management and control system for line capacity increase based on pre-test
  • A safety management and control system for line capacity increase based on pre-test
  • A safety management and control system for line capacity increase based on pre-test

Examples

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Embodiment 1

[0028] A pre-test-based line capacity increase safety management and control system, including a pre-test system, a monitoring system, and a control center. The pre-test system constructs the ambient temperature Te and humidity Da for cable operation, and obtains the functional relationship between the cable outer sheath temperature and the conductor temperature Tc =H(Tf,Te,Da), where Tc is the temperature of the conductor, and Tf is the temperature of the outer sheath of the cable; the monitoring system includes a temperature monitor and an environmental monitor arranged along the cable, and the temperature monitor monitors the temperature of the outer sheath of the cable, The environmental monitor monitors the ambient temperature Te and humidity Da near the cable, and both the temperature monitor and the environmental monitor are connected to the control center; the control center communicates with the dispatching center to periodically read the real-time load L of the target ...

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Abstract

The invention relates to the field of electric power technology, in particular to a pre-test-based line capacity increase safety management and control system, including a pre-test system, a monitoring system and a control center. The pre-test system obtains the functional relationship between the temperature of the cable outer sheath and the temperature of the conductor; monitoring The system includes temperature monitors and environment monitors laid out along the cables; the control center communicates with the dispatch center, periodically reads the real-time load L of the target cable, and compares the cable load L with the temperature Tf of the outer sheath of the cable obtained by the monitoring system, the environment The temperature Te is correlated with the humidity Da, the sample data is obtained, and the dynamic maximum load Ld of the cable is obtained as the upper limit of the capacity increase. The substantive effect of the present invention is: obtaining the functional relationship between the temperature of the outer sheath of the cable and the temperature of the conductor through the pre-test can not only quickly obtain the upper limit of the cable capacity increase, but also ensure the safety and reliability of the cable by monitoring the cable state.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a pretest-based line capacity increase safety control system. Background technique [0002] Due to the long circuit of the transmission line and the complex environment of the channel, when designing a line, the design unit often uses wires of various cross-sections according to the environmental conditions. As a result, the cross-section selection of some line conductors is unreasonable, unable to meet the rapidly growing load demand, and has become a restrictive device that limits the power supply capacity of the regional power grid. The dynamic capacity increase technology is to install an online monitoring device on the transmission line to monitor the state of the conductor and the meteorological conditions. On the premise of not breaking through the current technical regulations, the maximum allowable carrying capacity of the conductor is calculated according to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00G01N25/20G01D21/02
CPCG01R31/00G01N25/20G01D21/02Y02E60/00
Inventor 段军殷伟斌梁樑丁一岷陈鼎周旻顾曦华江洪曾东葛黄徐钱伟杰李志余绍峰高一波郭创新丁一叶承晋方攸同胡景博唐锦江郭一凡金祝飞邢旭亮
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JIAXING POWER SUPPLY CO
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