Experimental study on location of lightning stroke on OPGW by means of a distributed optical fiber temperature sensor

Liu, Lu; Liang, Yun; Li, Binglin; Guo, Jun; Zhang, Hao; Zhang, Xuping

doi:10.1016/j.optlastec.2014.07.007

Cited by 25 publications

(3 citation statements)

References 27 publications

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“…B-OTDR-based distributed temperature sensor for localizing the lightning strokeinduced temperature change in OPGW was also reported. 148 FBGs 149,150 with portable systems were also used in temperature monitoring of transmission lines and they demonstrated a higher accuracy of ∼0.1°C and greater stability. An FBG-based temperature measurement system was installed on No.…”

Section: Temperature Monitoringmentioning

confidence: 99%

Review on fiber-optic sensing in health monitoring of power grids

et al. 2019

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Fiber-optic sensing technology is best adapted to health monitoring and evaluation of power grids because of its immunity of electromagnetic interference, capabilities of multiplexing and distributed sensing, and tolerance to harsh environments. We review key fiber-optic sensing technologies, including fiber Bragg gratings, fiber-optic interferometers, optical time domain reflectometries, and their applications in three main parts of power grids, transformers, power towers, and overhead transmission lines, during the past 20 years. In particular, optical fiber composite overhead ground wire and optical phase conductor applied in power grids are the areas of great potential to go further. The perspectives of an intelligent fault diagnosis subsystem for power grids based on a fiber-optic sensing network are discussed, and related on-going work is described. The review shall be of benefit to both engineers and researchers in power grids and fiber-optic sensing.

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Section: Temperature Monitoringmentioning

confidence: 99%

Review on fiber-optic sensing in health monitoring of power grids

et al. 2019

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“…Based on the optical time domain reflecting structure, the light scattering spectrum has been adopted to locate and identify the events occurring along the sensing fiber. The Rayleigh scattering-based distributed optical fiber sensors are widely applied to practical engineering, for example, fault location in optical fiber communication cables [ 1 ], leakage monitoring of oil pipelines [ 2 , 3 ], state parameter monitoring in the petroleum industry such as asphaltene [ 4 , 5 , 6 ], and partial discharge sensing on the power transmission lines [ 7 , 8 ]. The distributed vibration sensing technology has become a hot issue, especially in the power industry.…”

Section: Introductionmentioning

confidence: 99%

A Novel Distributed Vibration Sensor Based on Fading Noise Reduction in Multi-Mode Fiber

Liu

Zhang

et al. 2022

Sensors

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Multi-mode fiber (MMF) is used in a polarization-sensitive optical time domain reflectometer (OTDR) for vibration event location and spectrum analysis. The vibration events acting on MMF are considered to be the optical polarization state and phase diversifying process for fading noise reduction. In addition, data averaging with continuous positions and the fast Fourier transform (FFT) method is proposed to extract the spectrum of the vibration events. In the experiment, the vibration events are loaded at the positions of 5.167 and 10.145 km, respectively, along MMF. The experimental results demonstrate that the vibration event can effectively diversify the optical polarization state and phase of the Rayleigh scattering light to make the averaged OTDR trace behind the vibration position converge rapidly, which helps to locate corresponding vibration events and extract the vibration spectrum. It is inferred that the new distributed vibration sensor shall have a lower false alarm rate, as it can greatly reduce the errors caused by randomness of the sensing light signals. Additionally, it also saves time in comparison with the method that analyzes the vibration spectra for all the positions along the fiber under test.

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“…According to the current research, it is believed that the lightning damage is mainly related to the amount of lightning transfer charge, which means that the stable arc formed by the long-term continuous current is the main cause of OPGW melting and breaking. The stable arc formed by the long-time continuous current is the main cause of OPGW strands breaking and damage, and the lightning damage to OPGW is mainly related to lightning current transfer charge [20,21]. The variation of tensile force will obviously affect the damage caused by lightning to OPGW.…”

Section: Introductionmentioning

confidence: 99%