Modeling and analysis on the sensing characteristic of fiber optical current transformer

Li, Yansong; Wang, Qingqing; Liu, Jun

doi:10.1109/iecon.2017.8216060

Cited by 3 publications

(2 citation statements)

References 18 publications

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“…One can see from Figure 2 that the input variables I 1 and T have only positive feedback, thus the fiber optic current sensor is an open loop system [15].…”

Section: Open Loop Mechanism Of Polarization-type Fiber Optic Currentmentioning

confidence: 99%

“…where ∆T = T − T 0 , T is the actual temperature, T 0 = 25 • C, and V 0 = 1.0 × 10 −6 rad/A at 25 • C. On the other hand, the installation of a sensing ring inevitably causes the fiber to bend, and temperature fluctuations generate a stress difference along the cross section of the curved fiber, thereby generating stress-induced birefringence. Q is the temperature-induced linear birefringence coefficient per unit length [17]:…”

Section: Impact Of Temperature Drift On a Fiber Optic Current Sensormentioning

confidence: 99%

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Characteristic Analysis and Experiment of Adaptive Fiber Optic Current Sensor Technology

Zhang

Liu

et al. 2019

Applied Sciences

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The straight-through magneto-optical glass current sensor has desirable temperature properties, but it is vulnerable to magnetic interference. In contrast, a polarization-type fiber optic current sensor has poor temperature performance, but the magnetic anti-interference characteristic is very good. Aiming at the problem that the accuracy of a fiber optic current sensor is susceptible to external disturbances and temperature fluctuations, we present an adaptive technology of a fiber optic current sensor that uses the magneto-optical output signal to correct the fiber output signal. The working principle of the improved method is introduced in this paper. The structure of the specific optical system and the signal processing system are presented. Temperature fluctuation and magnetic change detection units are included in the design in order to provide signal selection under different environmental fluctuations, thus stabilizing the output current data. The signal processing system was proved to be effective by building an experimental platform.

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“…One can see from Figure 2 that the input variables I 1 and T have only positive feedback, thus the fiber optic current sensor is an open loop system [15].…”

Section: Open Loop Mechanism Of Polarization-type Fiber Optic Currentmentioning

confidence: 99%

Section: Impact Of Temperature Drift On a Fiber Optic Current Sensormentioning

confidence: 99%

Characteristic Analysis and Experiment of Adaptive Fiber Optic Current Sensor Technology

Zhang

Liu

et al. 2019

Applied Sciences

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Design and validation of broadband calibration system for fiber-optical current transformers

Yu¹,

Li²,

Li³

et al. 2019

J. Phys.: Conf. Ser.

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Review of Uncertainty Sources in Optical Current Sensors Used in Power Systems

Costa,

Martinez,

Costa

2024

Energies

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Optical current sensors have been developed and improved over the past few decades, and they have been increasingly employed in power systems, including smart and high-voltage grids. This is due to their many advantages over conventional electromagnetic current sensors, such as reduced size and weight, greater operational safety, and electromagnetic immunity. Like any measuring instrument or system, their quality and reliability are associated with measurement uncertainty, which quantifies their precision. This measurement uncertainty depends on a series of influencing quantities, such as the wavelength of light used in the sensor, the birefringence of the optical material used in the construction of the sensor, and environmental conditions, such as temperature and vibration. This article presents a review of the main influences that affect the quality and performance of optical current sensors and how these influences can be used to estimate measurement uncertainty. The main objective is to serve as a guide or reference for the identification and evaluation of uncertainty sources in optical current sensors used in power systems.

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Modeling and analysis on the sensing characteristic of fiber optical current transformer

Cited by 3 publications

References 18 publications

Characteristic Analysis and Experiment of Adaptive Fiber Optic Current Sensor Technology

Characteristic Analysis and Experiment of Adaptive Fiber Optic Current Sensor Technology

Design and validation of broadband calibration system for fiber-optical current transformers

Review of Uncertainty Sources in Optical Current Sensors Used in Power Systems

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