Location of lightning stroke on OPGW by use of distributed optical fiber sensor

Lidong Lu; Yun Liang; Binglin Li; Jinghong Guo; Hao Zhang; Xuping Zhang

doi:10.1117/12.2069005

3 December 2014 Location of lightning stroke on OPGW by use of distributed optical fiber sensor

Lidong Lu, Yun Liang, Binglin Li, Jinghong Guo, Hao Zhang, Xuping Zhang

Proceedings Volume 9297, International Symposium on Optoelectronic Technology and Application 2014: Laser and Optical Measurement Technology; and Fiber Optic Sensors; 92972I (2014) https://doi.org/10.1117/12.2069005
Event: International Symposium on Optoelectronic Technology and Application 2014, 2014, Beijing, China

Abstract

A new method based on a distributed optical fiber sensor (DOFS) to locate the position of lightning stroke on the optical fiber ground wire (OPGW) is proposed and experimentally demonstrated. In the method, the lightning stroke process is considered to be a heat release process at the lightning stroke position, so Brillouin optical time domain reflectometry (BOTDR) with spatial resolution of 2m is used as the distributed temperature sensor. To simulate the lightning stroke process, an electric anode with high pulsed current and a negative electrode (the OPGW) are adopted to form a lightning impulse system with duration time of 200ms. In the experiment, lightning strokes with the quantity of electric discharge of 100 Coul and 200 Coul are generated respectively, and the DOFS can sensitively capture the temperature change of the lightning stroke position in the transient electric discharging process. Experimental results show that DOFS is a feasible instrument to locate the lightning stroke on the OPGW and it has excellent potential for the maintenance of electric power transmission line. Additionally, as the range of lightning stroke is usually within 10cm and the spatial resolution of a typical DOFS is beyond 1m, the temperature characteristics in a small area cannot be accurately represented by a DOFS with a large spatial resolution. Therefore, for further application of distributed optical fiber temperature sensors for lightning stroke location on OPGW, such as BOTDR and ROTDR, it is important to enhance the spatial resolution.

Citation Download Citation

Lidong Lu, Yun Liang, Binglin Li, Jinghong Guo, Hao Zhang, and Xuping Zhang "Location of lightning stroke on OPGW by use of distributed optical fiber sensor", Proc. SPIE 9297, International Symposium on Optoelectronic Technology and Application 2014: Laser and Optical Measurement Technology; and Fiber Optic Sensors, 92972I (3 December 2014); https://doi.org/10.1117/12.2069005

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KEYWORDS

Optical fibers

Temperature sensors

Spatial resolution

Temperature metrology

Fiber optics sensors

Optical communications

Electrodes

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