Power transmission line online fault monitoring method and system

A transmission line and fault monitoring technology, applied in the fault location, detecting faults according to conductor type, measuring electricity and other directions, can solve the problems of large ranging error, inaccurate fault location, and many lines T-connected lines, etc., to reduce anxiety. and complaints, improve the reliability of power supply, and shorten the search time.

Active Publication Date: 2019-07-16
STATE GRID SHANDONG ELECTRIC POWER +1
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Problems solved by technology

[0004] As far as the inventor knows, at present, distributed fault location monitoring systems are mostly used in transmission lines to solve the problems of inaccurate fault location and difficult to accurately identify fault causes in traditional monitoring methods.
However, practical experience shows that due to the large distance measurement error, the long distance of transmission lines, and the large number of T-connected lines in

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  • Power transmission line online fault monitoring method and system
  • Power transmission line online fault monitoring method and system
  • Power transmission line online fault monitoring method and system

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[0049] The present disclosure will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0050] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0051] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or ...

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Abstract

The invention provides a power transmission line online fault monitoring method and system. The method comprises the following steps: integrating operation parameters and environmental parameters of the power transmission line under different faults to form a fault historical database, and constructing a neural network identification model of the power transmission line under different faults according to the fault historical database; collecting operating parameters and environmental parameters of the power transmission line, inputting the operating parameters and the environmental parametersinto the neural network identification model, and analyzing faults of the power transmission line; judging the fault occurrence reason according to the fault analysis result, and carrying out image acquisition on the possible fault points of the power transmission line; and performing feature extraction and analysis on the acquired images, and obtaining fault occurrence points according to analysis results. According to the power transmission line online fault monitoring method and the system thereof, the fault point can be judged at the first time, the fault searching time is shortened, thefault is eliminated as early as possible, the power transmission is recovered, and the power supply reliability is improved.

Description

technical field [0001] The disclosure relates to the field of power transmission lines for cooling and heating technology, and in particular to an online fault monitoring method and system for power transmission lines. Background technique [0002] The statements in this section merely mention background art related to the present disclosure and do not necessarily constitute prior art. [0003] Overhead transmission lines are the main components of the power system and transmission network. They undertake most of the industrial and domestic power transmission tasks. The most prone to failure part. Common transmission line faults are mainly divided into transient faults and permanent faults according to their nature. Transient faults mainly include flashover caused by lightning overvoltage and short circuit caused by birds, etc. Permanent faults are mostly caused by climate or equipment itself, etc. Causes, such as instantaneous overvoltage breakdown of transmission line in...

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Application Information

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IPC IPC(8): G01R31/08
CPCG01R31/085G01R31/088
Inventor 管莉蒋世燕刘继婷郑兴娟陈宏达夏新志张志国孙涵郑大伟刘幸幸
Owner STATE GRID SHANDONG ELECTRIC POWER
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