Multifunctional external-force-damage-resistant monitoring system and method for high voltage cable fixation construction site

A technology that prevents external damage and high-voltage cables. It is applied in the direction of voltage/current isolation, measurement of electricity, and only measurement of current. It can solve the problems of inability to ensure safe and stable operation of high-voltage cables, impossible all-weather fixed-point monitoring of construction hazards, and lack of underground cable pipeline protection. awareness and other issues, to achieve the effect of reducing the probability of external damage accidents, shortening the time for fault inquiry, and reducing the workload of inspection

Active Publication Date: 2019-09-17
STATE GRID SHANDONG ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The main causes of external force damage to high-voltage cables are: (1) the impact of human factors such as urban construction on the safe operation of power cables; Insufficient attention is paid to operation management, and inspections by operating personnel are not in place, and omissions are common
[0004] The inventor discovered during the research and development process that the existing high-voltage cable damage monitoring methods include: manual inspection, distr

Method used

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  • Multifunctional external-force-damage-resistant monitoring system and method for high voltage cable fixation construction site
  • Multifunctional external-force-damage-resistant monitoring system and method for high voltage cable fixation construction site
  • Multifunctional external-force-damage-resistant monitoring system and method for high voltage cable fixation construction site

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Effect test

Embodiment 1

[0048] This embodiment provides a multifunctional anti-external damage monitoring system for high-voltage cable fixed construction points, please refer to the attached figure 1 , the system includes a master station 1, a transmission device 2 and several terminal monitoring devices 3, the terminal monitoring device is used to collect the grounding current of the metal sheath of the high-voltage cable, the temperature of the cable joint of the high-voltage cable, and the state of the grounding wire of the high-voltage cable, and upload to the transmission device; the transmission device uploads the information of all terminal monitoring devices to the main station after summarizing.

[0049] In this embodiment, the master station 1 includes a communication switch, a server, a UPS, etc., the communication switch is used to receive the data and alarm information uploaded by the transmission device and forward them to the server, and the UPS is used to supply power to the server. ...

Embodiment 2

[0079] This embodiment provides a multifunctional external force damage monitoring method for fixed construction points of high-voltage cables. The method includes the following steps:

[0080] S101, collect the grounding current signal of the metal sheath through the flexible Rogowski coil, transmit the grounding current signal of the metal sheath to the central processor through the universal asynchronous transceiver transmitter, and the central processor uploads the collected data to the comprehensive monitoring host through the wireless communication module .

[0081] S102, collect the actual temperature of the cable joint and its corresponding ambient temperature in real time through the detection body, and directly forward it to the comparator; the comparator compares the actual temperature of the cable joint with the corresponding surrounding ambient temperature, and the cable joint is determined After the actual temperature exceeds a certain threshold of the ambient te...

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Abstract

The invention discloses a multifunctional external-force-damage-resistant monitoring system and method for a high voltage cable fixation construction site. The system and the method realize real-time monitoring on a grounding current of a metal sheath of a high voltage cable, a cable joint temperature of the high voltage cable and a fact that whether a ground wire of the high voltage cable is stolen and cut. The system comprises a master station, a transmission device and a plurality of terminal monitoring devices; the terminal monitoring devices respectively comprise a high voltage cable metal sheath grounding current monitoring device used for monitoring grounding current data of the metal sheath of the high voltage cable, a high voltage cable joint temperature monitoring device used for monitoring the cable joint temperature of the high voltage cable and a high voltage cable ground wire stealing-resistant and cut-resistant monitoring device used for monitoring whether the ground wire of the high voltage cable is stolen and cut; and the transmission device is used for receiving the grounding current of the metal sheath of the high voltage cable, the cable joint temperature of the high voltage cable and state data of the ground wire of the high voltage cable, summarizing and then uploading to the master station.

Description

technical field [0001] The present disclosure relates to the technical field of cable partial discharge monitoring, in particular to a multi-functional external force damage monitoring system and method for fixed construction points of high-voltage cables. Background technique [0002] High-voltage cable is a kind of power cable, which refers to the power cable used to transmit between 1kv-1000kv, and is mostly used in power transmission and distribution. Due to factors such as the weak protection awareness of power facilities in some construction units, the hidden danger of external damage has always threatened the safe operation of cable lines. [0003] The main causes of external force damage to high-voltage cables are: (1) the impact of human factors such as urban construction on the safe operation of power cables; The operation management does not pay enough attention, and the inspections of the operation personnel are not in place, and the phenomenon of omission is re...

Claims

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Application Information

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IPC IPC(8): G01R15/18G01R19/00G01R31/02G01K1/02G01V8/10G01K1/024
CPCG01R15/181G01R19/0092G01K1/02G01V8/10G01R31/50
Inventor 曹政张强薛伦李东崔淑恒马耀周敏沈宏奇
Owner STATE GRID SHANDONG ELECTRIC POWER
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