Online monitoring system of partial discharge of power cable

A partial discharge and power cable technology, applied in signal transmission systems, testing dielectric strength, instruments, etc., can solve the problems of high cost, real-time and poor accuracy of partial discharge data collection, etc., to increase the use time and reduce the collection cost. , the effect of low cost

Active Publication Date: 2013-09-18
STATE GRID CORP OF CHINA +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 problem of real-time, poor accuracy and high cost of partial discharge data collection in the existing power cable partial discharge monitoring technology, so as to provide a low-cost, high reliability and real-time partial discharge of power cable Online monitoring system

Method used

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  • Online monitoring system of partial discharge of power cable
  • Online monitoring system of partial discharge of power cable
  • Online monitoring system of partial discharge of power cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of power cable partial discharge on-line monitoring system of an embodiment of the present invention, such as figure 1 As shown, it includes n monitoring nodes, 1 central node and 1 data management platform.

[0038] in,

[0039] The n monitoring nodes are installed in n monitoring areas of the power cable, and after the n monitoring nodes collect the partial discharge data of their respective monitoring areas, the partial discharge data are sent to the central node through wireless communication ; n is an integer greater than or equal to 1.

[0040] The central node receives the partial discharge data sent by the n monitoring nodes through wireless communication, and sends the received partial discharge data to the data management platform.

[0041] The data management platform receives and saves the partial discharge data sent by the central node, and processes the partial discharge data.

[0042]An online partial discharge monitoring system for power cables...

Embodiment 2

[0052] Such as figure 2 As shown, taking the m monitoring node as an example, and illustrating on the basis of the embodiment 1, the monitoring node in the embodiment 1 further includes a partial discharge sensor, a partial discharge data acquisition module, a first ZigBee module and a first power module.

[0053] in,

[0054] The partial discharge sensor is used for monitoring the partial discharge signal in the monitoring area on the power cable and sending the partial discharge signal to the partial discharge data acquisition module.

[0055] The partial discharge data acquisition module receives the partial discharge signal sent by the partial discharge sensor, processes the partial discharge signal to obtain partial discharge data, and sends the partial discharge data to the first ZigBee module.

[0056] The first ZigBee module receives the partial discharge data sent by the partial discharge data acquisition module, and sends the partial discharge data; the node m rec...

Embodiment 3

[0060] Such as image 3 As shown, on the basis of the first embodiment, the central node further includes a second ZigBee module, a first mobile communication module and a second power supply module.

[0061] in,

[0062] The second ZigBee module is configured to receive the partial discharge data sent by the first ZigBee interface, and send the partial discharge data to the first mobile communication module.

[0063] The first mobile communication module is configured to receive the partial discharge data sent by the second ZigBee interface, and send the partial discharge data to the data management platform.

[0064] The second power supply module supplies power to the second ZigBee module and the first mobile communication module.

[0065] The ZigBee module is used for communication between the monitoring node and the central node. The ZigBee module has the advantages of low power consumption and free communication, which can greatly increase the service time of the batte...

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PUM

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Abstract

The invention relates to an online monitoring system of partial discharge of a power cable. A monitoring node is mounted on a monitoring region of the power cable; the monitoring node is used for uploading partial discharge data to a central node through a direct sending or relaying transmission wireless communication manner; and the central node sends the received partial discharge data to a data managing platform so as to realize long-distance transmission of the partial discharge data. An underground monitoring node carries out information transferring through a wireless signal, and the data is directly sent to the data managing platform on the ground through the central node; any manual routing inspection is not needed, and a communication cable does not need to be paved, so that the collection of the partial discharge data of a plurality of monitoring nodes is more convenient and simpler, and the collection cost for collecting the partial discharge data is effectively reduced; and the online monitoring system has the advantages of high reliability and good instantaneity.

Description

technical field [0001] The invention relates to an on-line monitoring system for partial discharge of electric cables, which belongs to the technical field of partial discharge monitoring of electric cables. Background technique [0002] Compared with the traditional overhead line power supply, the power cable power supply has the advantages of not being affected by the external environment, saving land, and good electrical performance. With the development of urban power grids, the utilization rate of power cables continues to increase, and the reliability of cable operation has attracted the attention of the power sector. There are many reasons for cable failures. Statistical analysis of cable failures found that most of the failures occurred in the intermediate joints and terminal heads of cables and the surrounding areas. Especially the intermediate joints need to be made on site, which requires high production and is more likely to cause accidents. , the intermediate j...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12G08C17/02
Inventor 时翔赵生传徐强江川蔡健牟磊崔潇齐蔚海蓝先明王德东李志戈曲健
Owner STATE GRID CORP OF CHINA
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