Monitoring Technology of Nuclear Power Primary Circuit Leakage Point Based on Distributed Temperature Sensor

Hao-jian, 邢豪健 Xing; Qiu-xiao, 乔秋晓 Qiao; Zhong-xie, 金钟燮 Jin

doi:10.3788/gzxb20194805.0506004

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“…The fiber grating sensor is connected to the fiber grating signal processor after being welded with the indoor optical cable. From the point of view of quantum theory energy level, Raman scattering is caused by the optical branch phonon waves or vibration photons of inelastic collision molecules [7]. Studies have shown that Raman scattered light can also be expressed as a set of spectral distributions [8].…”

Section: Methodsmentioning

confidence: 99%

Application Research on Online Power Cable Temperature Detection via Fiber Optics

Naigen,

ZhiYong,

Hesheng

et al. 2024

Applied Mathematics and Nonlinear Sciences

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Power cable conductor ampacity directly correlates with conductor temperature. Traditional thermocouple measurement fails to ensure real-time monitoring, risking cable operation. Leveraging Raman scattering principles, this study establishes a method for continuous surface temperature detection of long-distance power cables using distributed fiber optics. This approach surpasses OTDR-based measurement in speed and reliability, offering superior online monitoring for cable systems, suitable for widespread adoption.

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Section: Methodsmentioning

confidence: 99%