A method for monitoring the icing state of a high-voltage power transmission network
A high-voltage transmission line and icing technology, which is applied in the field of analysis and measurement control, can solve the problem that the icing state is difficult to monitor effectively, reliably and economically, and achieve the effect of effective monitoring.
Active Publication Date: 2022-07-05
YANGTZE OPTICAL FIBRE & CABLE CO LTD
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Problems solved by technology
[0004] The present invention solves the problem that the icing state of medium and long-distance OPGW high-voltage transmission cables is difficult to monitor effectively, reliably and economically by providing a method for monitoring the icing state of the high-voltage transmission line network
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[0030] In order to better understand the above technical solutions, the above technical solutions will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0031] This embodiment provides a method for monitoring the icing state of a high-voltage transmission line network, see figure 1 , including the following steps:
[0032] Step 1. Obtain the ambient temperature of the OPGW high-voltage power transmission cable.
[0033] Specifically, the ambient temperature (T ref ).
[0034] Step 2: Obtain the Brillouin frequency shift curve (ie, the BFS curve) of the OPGW high-voltage power transmission cable.
[0035] Specifically, the Brillouin frequency shift curve is acquired through acquisition by a BOTDA or a BOTDR host.
[0036] Step 3. Demodulate the Brillouin frequency shift curve to obtain the optical fiber temperature information (T wire ), fiber stress-strain information (S wire ).
[0037] The present invention can use th...
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Abstract
The invention belongs to the technical field of analysis and measurement control, and discloses a method for monitoring the icing state of a high-voltage transmission line network, which obtains the ambient temperature and Brillouin frequency shift curve of an OPGW high-voltage transmission cable, and demodulates the Brillouin frequency shift curve. Obtain the optical fiber temperature information and optical fiber stress and strain information in the OPGW high-voltage transmission cable, and demodulate the ice coating thickness of the OPGW high-voltage transmission cable according to the change rate of the ambient temperature and the optical fiber temperature, and judge whether it meets the alarm conditions according to the threshold value. , start the snow melting program. The invention effectively solves the problem that the ice-covered state of the long-distance OPGW high-voltage power transmission cable is difficult to monitor effectively, reliably and economically.
Description
technical field [0001] The invention relates to the technical field of analysis and measurement control, in particular to a method for monitoring the ice coating state of a high-voltage transmission line network. Background technique [0002] Freezing rain and icing seriously threaten the safe operation of high-voltage transmission lines due to overloading, insulator ice flashing, deicing, and tower collapse. Because high-voltage transmission lines are often deployed in uninhabited areas or areas with harsh environments, it is difficult for traditional manual inspection methods to effectively observe the entire section of high-voltage transmission cables in real time. The use of drones equipped with cameras and monitoring methods with machine vision algorithms is limited by the drone's several kilometers of single non-endurance flight distance. Considering: On the one hand, the charging efficiency of current UAV on-board solar charging and other sustainable energy acquisiti...
Claims
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IPC IPC(8): G01K11/322
CPCG01K11/32Y04S40/124
Inventor 郑喆轩项勇杨华东水彪黎单驰张心贲
Owner YANGTZE OPTICAL FIBRE & CABLE CO LTD