Power transmission line multi-parameter comprehensive monitoring system based on distributed fiber sensing
A technology of distributed optical fibers and transmission lines, which is applied in the direction of using optical devices to transmit sensing components, can solve problems such as single parameters, and achieve the effects of good detection accuracy and simple structure.
Inactive Publication Date: 2019-01-18
中光华研电子科技有限公司
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Problems solved by technology
[0003] The current transmission line monitoring methods, such as temperature detectors for monitoring wildfires, weighing / tension sensors for monitoring ice coating, electronic temperature sensors for monitoring ice melting, and inspection robots for monitoring broken strands caused by external forces, all of these methods exist However, in many practical applications, it is often necessary to measure the parameter distribution information of multi-dimensional problems such as mountain fires, icing, ice melting, and external force damage and broken strands in the entire transmission line or line corridor.
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Embodiment 1
[0019] see figure 1 , a kind of transmission line multi-parameter comprehensive monitoring system based on distributed optical fiber sensing in the present invention, comprises distributed optical fiber sensing system, is characterized in that:
[0020] The distributed optical fiber sensing system includes a laser, a polarization coupler, a first and a second electro-optic modulator, a first and a second optical amplifier, a circulator 1, a filter, a detector, a mountain fire signal processor, a cover Ice signal processor, ice melting signal processor, external force damage signal processor and main unit with display;
[0021] The output end of the laser is connected to the input end of the polarization coupler, and the output end of the polarization coupler is divided into two paths and connected to the input end of the first electro-optic modulator and the input end of the second electro-optic modulator respectively, and the input end of the first electro-optic modulator Th...
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Abstract
The invention relates to the technical field of power monitoring, specifically a power transmission line multi-parameter comprehensive monitoring system based on distributed fiber sensing. An output end of a laser is connected with an input end of a polarization coupler; the output end of the polarization coupler is divided into two ways respectively connected with the input end of a first electro-optic modulator and the input end of a second electro-optic modulator; the output end of the first electro-optic modulator is connected with first ports of a first optical amplifier and a circulatorin sequence. A second port of the circulator is connected with one end of any fiber. The other end of the same fiber is connected with the output end of the second electro-optic modulator. A third port of the circulator is connected with the input ends of a second optical amplifier, a filter and a detector in sequence. The output end of the detector is connected with a processor and a host in sequence. Compared with the prior art, the system has the advantages that an OPGW / OPPC fiber is taken as a sensor, and comprehensive real-time monitoring is carried out on hill fire, icing, deicing and external force destroyed strand broking of a circuit.
Description
technical field [0001] The invention relates to the technical field of power monitoring, in particular to a multi-parameter comprehensive monitoring system for transmission lines based on distributed optical fiber sensing. Background technique [0002] In power transmission lines, optical fiber composite overhead ground wire (OPGW) and optical fiber composite overhead phase wire (OPPC) have high reliability, superior mechanical properties, and low cost. The optical cables in OPGW / OPPC are used as Communication, anti-electromagnetic interference, not easy to be destroyed by human beings, long service life, low operation and maintenance costs, etc., have been widely used in my country's power system communication backbone transmission network in recent years. However, OPGW / OPPC is vulnerable to wildfires, icing, ice melting, and external force damage and broken strands in harsh environments. Once the ground wire function or optical fiber communication function is lost, the safe...
Claims
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Login to View More IPC IPC(8): G01D5/353
CPCG01D5/353
Inventor 李伟李桂顺赖明聪
Owner 中光华研电子科技有限公司