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High-voltage cable online monitoring system

A high-voltage cable and monitoring system technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of frequent temporary maintenance, restricting cable troubleshooting work, and single monitoring volume, and achieves high development efficiency and system efficiency. , Conducive to the efficiency of software development and the effect of simplifying the data communication process

Pending Publication Date: 2021-11-19
韩金宝 +1
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0005] The inventors found that the current monitoring methods proposed have a single monitoring state, and the monitoring methods are mature in their respective fields, but the monitoring amount is single, which may lead to failure to detect cable faults in time, unavoidable occurrence of serious cable accidents, and low overall maintenance efficiency. High; the maintenance and fault prevention of the high-voltage cable body and outdoor terminals are mainly based on the regular maintenance mode; the regular maintenance mode mainly depends on the maintenance regulations and personnel experience, and the maintenance methods are comprehensive but not targeted, and frequent and insufficient temporary maintenance often occur Or surplus, blind maintenance and other problems, consume a lot of manpower and material resources but still can not avoid serious accidents caused by outdoor cable terminals, the overall maintenance efficiency is not high; the above problems are currently common in the operation of the power grid, which seriously restricts the troubleshooting of cable faults work, which is not conducive to improving the reliability and stability of power supply

Method used

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  • High-voltage cable online monitoring system
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 As shown, the present disclosure provides an online monitoring system for high-voltage cables; the system combines the cable data changes when various cable faults occur, and simultaneously monitors and collects data such as ground circulation, ground wire temperature, and ground box vibration; The collected data will be analyzed and calculated in the main control module of the monitoring device, and then the data will be transmitted to the host computer software through the communication module, and converted into a visual data change chart; the host computer software compares the real-time data with the safe operation data of the cable, and timely Issue an early warning; the upper computer software has the function of analyzing the historical data of the cable, and can promptly troubleshoot areas where cable problems occur frequently.

[0041] The monitoring device is composed of a main controller, an acquisition module and a data transmission module....

Embodiment 2

[0059] This embodiment provides a kind of high-voltage cable on-line monitoring method, has adopted the high-voltage cable on-line monitoring system as described in embodiment 1, mainly includes the following contents:

[0060] Simultaneously monitor and collect data on ground circulation, ground wire temperature and ground box vibration data;

[0061] Perform analysis and effective value calculation in the main control module of the monitoring device;

[0062] The data is transmitted to the host computer software through the communication module;

[0063] PC software analysis data historical data comparison troubleshooting.

Embodiment 3

[0065] Such as image 3 As shown, the monitoring of outdoor terminals is divided into four steps.

[0066] Step 1: Leakage current measurement system monitoring.

[0067] For high-voltage cable outdoor terminals, especially composite insulation outdoor terminals, with the increase of the operation time, a certain degree of insulation degradation will occur. Insulation degradation is usually more pronounced under polluted conditions, which is mainly caused by the reduction of the material's hydrophobicity. A continuous water film formed on the surface of the insulating bushing may cause intense arcing due to reduced hydrophobicity. Therefore, the leakage current can well characterize the electrical performance of the outdoor insulation terminal. In order to measure the leakage current flowing along the surface of the outdoor terminal, a measuring resistor is connected in series in the ground lead of the terminal, the circuit change is recorded in the form of voltage, and the...

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Abstract

The invention discloses an online monitoring system and method for a high-voltage cable. The method comprises the following steps of monitoring and collecting data such as grounding circulation, grounding wire temperature, grounding box vibration and the like at the same time; performing analysis and effective value calculation in a main control module of the monitoring device; the data being transmitted to an upper computer software through the communication module; the upper computer software analyzingthe data, comparing historical data and checking problems. According to the method, the cable fault early warning function and the troubleshooting function of the cable fault high-incidence area are realized, the visual data is convenient for the power distribution network fault troubleshooting personnel to carry out cable multi-state online monitoring, and the power grid accident finding capability and the power supply reliability are improved.

Description

technical field [0001] The disclosure belongs to the technical field of on-line monitoring of multi-state quantities of high-voltage cables, and in particular relates to an on-line monitoring system of high-voltage cables. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] Power cables are used more and more in the power grid. The safe operation of power cables is the basic guarantee for the smooth operation of the entire cable network, and its significance to the safety and stability of the power grid operation has become increasingly prominent; Particularity, in severe weather such as high and low temperature, precipitation, ice and pollution, it is very difficult to find and eliminate fault points, which seriously affects the reliability of the power grid; improper construction and installation technology is the main cause of high-voltag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08
CPCG01R31/088
Inventor 王静思孟真张茜崔登浩张家玺刘芬刘泽坤李志文孙建宇王莉张振海
Owner 韩金宝
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