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Cable on-line monitoring method and device

A cable and electric cable technology, applied in the field of cable on-line monitoring, can solve problems such as production loss, fault location cannot be located in time, line fault protection, etc.

Pending Publication Date: 2022-01-07
CHINA RAILWAY DESIGN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the power supply cable is short-circuited between phases or grounded to the ground, it will cause fault protection of the entire line, such as disconnecting the switch to stop power supply, etc., resulting in production loss
However, the location of the fault cannot be located in time, which requires a lot of manpower and material resources to inspect the line, locate the fault, and eliminate the fault.

Method used

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  • Cable on-line monitoring method and device
  • Cable on-line monitoring method and device
  • Cable on-line monitoring method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] This embodiment provides a method for online cable monitoring, which can be used to monitor short-circuit faults of power supply cables. Further, this method can be applied to the cable online monitoring unit, which can be a terminal integrated with a micro computing unit, and can be installed in the cable type, that is, installed on the power supply cable, directly connected to the power supply cable monitoring for short-circuit faults.

[0046] In addition, the cable online monitoring unit can also be integrated with a positioning module and a communication module. Among them, the positioning module can use chips compatible with the global satellite positioning system or the Beidou satellite positioning system; the communication module can use 4G, 5G and other mobile communication chips, such as CAT4 or CAT1 chips.

[0047] figure 1 A flowchart of a method for online cable monitoring provided by Embodiment 1 of the present invention;

[0048] figure 2 A waveform ...

Embodiment 2

[0079] Figure 4 It is a schematic structural diagram of a cable online monitoring device provided by Embodiment 2 of the present invention. refer to Figure 4 , a device for online cable monitoring, may include: a waveform acquisition module 410 , a transition determination module 420 and a fault determination module 430 .

[0080] A waveform acquisition module 410, configured to acquire the waveform of the current in the power supply cable, wherein the amplitude of the waveform is the current value;

[0081] A transition determination module 420, configured to determine whether there is a transition in the waveform;

[0082] The fault determination module 430 is configured to determine that a short circuit fault exists in the power supply cable when there is a transition in the waveform and the current value of the waveform after the transition is zero.

[0083] In the present embodiment, the device of this cable on-line monitoring has anti-false alarm function, can inclu...

Embodiment 3

[0098] Figure 5 It is a schematic structural diagram of a cable online monitoring unit provided by Embodiment 3 of the present invention. refer to Figure 5 , in this embodiment, the cable online monitoring unit can be installed on the node on the power supply cable, including: a processor and a memory, the memory is used to store a computer program, and when the computer program is executed by the processor, the The above method for cable online monitoring.

[0099] On the basis of the above technical solution, the cable online monitoring unit may also include: a communication module;

[0100] The communication module is configured to send the fault information to the background terminal when monitoring the fault information that the current flowing through the node is overcurrent;

[0101] The communication module is further configured to send the power outage information to a background terminal when monitoring outage information that the current flowing through the nod...

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PUM

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Abstract

The invention relates to a cable on-line monitoring method and device, and the method comprises the steps: obtaining the waveform of a current in a power supply cable, wherein the amplitude of the waveform is a current value; determining whether the waveform has transition or not; and when transition exists in the waveform and the current value of the waveform after the transition is zero, determining that a short-circuit fault exists in the power supply cable, so that fault monitoring is achieved, and the operation and maintenance efficiency of a power system is improved.

Description

technical field [0001] The invention relates to the technical field of power supply cables, in particular to a method and equipment for online monitoring of cables. Background technique [0002] When the power supply cable is short-circuited between phases or grounded to the ground, it will cause fault protection of the entire line, such as disconnecting the switch to stop power supply, resulting in production loss. However, the location of the fault cannot be located in time, so a large amount of manpower and material resources need to be invested to inspect the line, locate the fault, and remove the fault. Contents of the invention [0003] The purpose of the present invention is to provide a method and equipment for online monitoring of cables, so as to realize the monitoring of power supply cable faults and improve the operation and maintenance efficiency of the power system. [0004] In order to achieve the above object, the technical scheme adopted in the present in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/52G01R31/08G01S19/42G01S19/12
CPCG01R31/52G01R31/086G01S19/42G01S19/12
Inventor 张莹崔晓岳刘奎黄海浪王宁曲衍宁漆成彪户其晓闫小伟
Owner CHINA RAILWAY DESIGN GRP CO LTD