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Method and device for monitoring power transmission line

A technology for power transmission lines and monitoring devices, applied in measurement devices, optical devices, tension measurement, etc., can solve the problems of video monitoring terminals being covered and frozen by ice and snow, only guessing, and signal transmission difficulties, etc., and achieve the speed of signal transmission. The effect of fast, long measuring distance and wide operating temperature range

Inactive Publication Date: 2009-12-30
SICHUAN HUIYUAN OPTICAL COMM CO LTD
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Problems solved by technology

However, this method has two problems: one is that the video monitoring terminal may be covered and frozen by ice and snow under severe weather conditions; the other is that this method can only obtain the icing and dancing conditions of the wires near the camera. can only speculate
In this case, although the signal can be measured, it is difficult to transmit
If a repeater fails, it will cause monitoring to fail

Method used

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  • Method and device for monitoring power transmission line
  • Method and device for monitoring power transmission line

Examples

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Embodiment

[0038] figure 2 A structural block diagram of an optical fiber sensor network is given. This is a sensing system based on Fiber Bragg Grating (FBG). But in practical applications, other types of fiber optic sensor networks can also be used. The following is a brief introduction to the FBG sensing system.

[0039] The signal transmission and processing system 10 in this example includes a laser 8 , a signal detection and processing device 9 , a computer data analysis and human-computer interaction unit 11 , and a circulator or coupler 13 . First, the laser light emitted by the laser 8 is incident into the optical fiber sensor network through a circulator or coupler 13, and the optical fiber sensor is connected in series on the optical fiber link. The photoelectric detection system 901 receives, and then passes through the signal amplification and filtering unit 902, and through the digital signal processing unit 903, the computer analysis software of the signal transmission...

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Abstract

The invention relates to monitoring technology of power transmission lines, in particular to technology for monitoring ice coating and waving states of the power transmission lines. The invention discloses a method and a device for monitoring the power transmission line by using fiber sensors in real time. The method for monitoring the power transmission line is characterized by comprising the following steps: arranging the fiber sensors along the power transmission line to detect characteristic parameters of different positions of a lead; and judging the state of the power transmission line according to the analysis of the characteristic parameters. The device for monitoring the power transmission line comprises the fiber sensors and a signal transmitting and processing system, and is characterized in that the fiber sensors are arranged along the length direction of the power transmission line and used for detecting and transmitting the characteristic parameters of the different positions of the power transmission line. The method and the device are used for monitoring the ice coating and waving states of the power transmission lines, can fully exert the advantages of the fiber sensors to carry out multi-parameter real-time on-line detection, and have the characteristics that the device has long service life and can work for long time reliably under on-site severe environment conditions.

Description

technical field [0001] The invention relates to the monitoring technology of power transmission lines, in particular to the monitoring technology of icing and galloping state of power transmission lines. Background technique [0002] Accidents of power transmission lines being disconnected and towers falling due to icing occur from time to time. Take the ice disaster accident in southern my country in early 2008 as an example. According to statistics, more than 140,000 towers of 10-110kV lines and more than 1,500 towers of 220kV and above lines were collapsed due to icing in the State Grid Corporation of China, resulting in the outage of 707 substations. The 500kV power grid in Jiangxi was basically paralyzed, Hunan, Guizhou, Zhejiang There were large-scale ice flash trips and broken towers in the power grid, resulting in large-scale power outages and partial grid decommissioning. Guizhou, Hunan and other places had to put outdated small thermal power units back into opera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K11/32G01B11/16G01P15/093G01B11/26G01L5/04G01G19/00G01B11/06G01K11/3206
Inventor 张昌华黄琦饶云江曹永兴冉曾令陈勇刘群英易建波
Owner SICHUAN HUIYUAN OPTICAL COMM CO LTD
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