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Fault monitoring method, device and system for power transmission line

A technology for fault monitoring and transmission lines, applied in fault locations, information technology support systems, etc., can solve problems affecting device deployment and replacement, devices unable to achieve line trip warning function, power outage installation, etc., to achieve the effect of improving timeliness

Pending Publication Date: 2022-08-05
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the existing technology still has the following defects: the installation and maintenance of the device generally requires power outage installation, which seriously affects the deployment and replacement of the device. At the same time, the device cannot realize the line trip warning function, which seriously affects the timeliness of transmission fault monitoring and diagnosis

Method used

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  • Fault monitoring method, device and system for power transmission line
  • Fault monitoring method, device and system for power transmission line
  • Fault monitoring method, device and system for power transmission line

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specific Embodiment 1

[0028] The embodiment of the present invention first describes a fault monitoring method for a power transmission line. figure 1 A flow chart of an embodiment of a fault monitoring method for a power transmission line according to the present invention is shown.

[0029] like figure 1 As shown, the method includes the following steps:

[0030] S1: Collect the discharge data of the preset collection point of the transmission line to be tested in real time through the non-contact sensor, and store the discharge data in the historical discharge data group.

[0031] In the prior art, transmission line fault tripping is one of the most frequent accidents in the power grid, and the tripping fault has a great impact on system safety, equipment safety and power supply reliability. Due to the inaccurate judgment of the cause of the fault and the inaccurate protection measures taken, it is difficult to significantly reduce the trip rate of grid faults; due to the inaccurate fault loca...

specific Embodiment 2

[0049] Furthermore, the embodiment of the present invention also describes a fault monitoring method for a power transmission line. figure 2 A flowchart of another embodiment of a fault monitoring method for a power transmission line according to the present invention is shown.

[0050] like figure 2 As shown, the method includes the following steps:

[0051] A1: Collect the discharge data of the preset collection point of the transmission line to be tested in real time through the non-contact sensor, and store the discharge data in the historical discharge data group.

[0052] In the prior art, transmission line fault tripping is one of the most frequent accidents in the power grid, and the tripping fault has a great impact on system safety, equipment safety and power supply reliability. Due to the inaccurate judgment of the cause of the fault and the inaccurate protection measures taken, it is difficult to significantly reduce the trip rate of grid faults; due to the ina...

specific Embodiment 3

[0070] In addition to the above method, the embodiment of the present invention also describes a fault monitoring device for a power transmission line. image 3 A structural diagram of an embodiment of a fault monitoring device for a power transmission line according to the present invention is shown.

[0071] As shown in the figure, the fault monitoring device includes a data acquisition unit 11 , an abnormality judgment unit 12 and a fault early warning unit 13 .

[0072] Wherein, the data collection unit 11 is used for collecting real-time discharge data of a preset collection point of the transmission line to be tested through a non-contact sensor, and storing the discharge data in a historical discharge data group.

[0073] The abnormality judgment unit 12 is used to judge whether the change of the electric field value exceeds the preset change threshold according to the historical discharge data group; Then record the duration that exceeds the change threshold and make ...

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Abstract

The invention discloses a fault monitoring method, device and system for a power transmission line. The fault monitoring device comprises a data acquisition unit, an abnormity judgment unit and a fault early warning unit. The fault monitoring system comprises a fault monitoring module, a detection acquisition module, a communication interaction module and a data storage module. Discharge data such as electric field values of preset collection points are collected in real time through a non-contact sensor, whether a to-be-detected power transmission line has a pre-discharge process or not is judged according to the discharge data so as to determine whether a fault occurs or not, and fault early warning information is sent to a user when the fault is determined, so that the timeliness of fault monitoring of the power transmission line is improved; furthermore, according to the fault monitoring method, device and system for the power transmission line provided by the invention, fault type analysis is carried out on the first traveling waveform collected at the first collection point, so that the fault type is identified and determined.

Description

technical field [0001] The invention relates to the field of fault monitoring of power transmission lines, and relates to a fault monitoring method, device and system of power transmission lines. Background technique [0002] Power transmission lines are prone to tripping accidents due to various natural factors such as lightning, pollution, animals and plants, wind and dancing, and icing. In addition to the impact to the system, every trip accident will damage insulators, wires and other facilities, leaving a potential safety hazard for system operation. Therefore, finding the fault point in time and accurately and repairing the line is an important work of system operation and maintenance. At the same time, finding out the reason for each fault trip can find out the deficiencies in the operation and maintenance of the transmission line, which is conducive to taking targeted management and technical measures to improve the reliability of the transmission line operation. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08
CPCG01R31/085Y04S10/52
Inventor 周恩泽王磊黄勇田翔饶章权魏瑞增王彤刘淑琴何浣汪皓刘琦孙晓敏郭圣
Owner GUANGDONG POWER GRID CO LTD
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