Dynamic deformation reconstruction method of transmission line based on opgw multi-core stress sensing
A technology of dynamic deformation and power transmission lines, applied in measurement devices, instruments, optical devices, etc., can solve the problems of low accuracy of power transmission lines, and achieve the effect of accurate monitoring and improving accuracy.
Active Publication Date: 2022-03-01
NANJING UNIV +1
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The characteristics of the OPGW optical cable structure make it different from the use of multi-core optical fibers in the sensing process, which easily makes the accuracy of the dynamic deformation of the transmission line determined by this low.
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[0023] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0024] Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiment...
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The invention discloses a method for dynamic deformation reconstruction of transmission lines based on OPGW multi-core stress sensing. By selecting multiple optical fibers in the OPGW optical cable as selected optical fibers in a static state, the distributed optical fiber stress sensing system is used to measure them respectively. The stress of each selected optical fiber in the natural hanging state is calculated according to the stress of each selected optical fiber in the natural hanging state The coupling coefficient of each selected optical fiber to the same external disturbance is calculated according to the stress dynamic distribution of each selected optical fiber The measurement results of the status and the coupling coefficient of the corresponding selected optical fiber determine the corrected stress of each selected optical fiber, and according to the shape restoration formula and the corrected stress of each selected optical fiber, the three-dimensional shape of the OPGW optical cable is constructed to realize the corresponding power transmission The reconstruction of the dynamic deformation of the line improves the accuracy of the dynamic deformation of the transmission line obtained by the reconstruction.
Description
technical field [0001] The invention relates to the technical field of optical fiber sensing, in particular to a method for dynamic deformation reconstruction of transmission lines based on OPGW multi-core stress sensing. Background technique [0002] In the development of smart grid, the integration of power transmission and communication network is the main trend, and optical fiber communication is an important part, which makes the power optical cable widely used in the power system. Among them, optical fiber composite overhead ground wire (OPGW) optical cable has become the main power optical cable used in the construction of smart grid due to its characteristics of easy maintenance, reliable operation, and relatively mature technology. Because optical cables are usually laid along with high-voltage overhead transmission lines and run in the wild for a long time, they are disturbed by various external environments, such as ice coating and strong winds, which affect their...
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IPC IPC(8): G01B11/16
CPCG01B11/16
Inventor 张驰刘静霄张益昕熊菲张旭苹丁哲文邹宁睦王峰
Owner NANJING UNIV