A Method for Suppressing Error of Fiber Optic Current Transformer Caused by Temperature Based on λ/4 Wave Plate Fabricated With Polarization-Maintaining Photonic Crystal Fiber

Gao, Hongze; Wang, Guochen; Gao, Wei; She, Li; Wang, Yongguang; Zhao, Bo; Zhang, Runfeng

doi:10.1109/jsen.2023.3256002

Cited by 5 publications

(2 citation statements)

References 17 publications

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“…A fiber quarter-wave plate is capable of transforming linearly polarized light into circularly polarized light, as well as circularly polarized light into linearly polarized light, whose quality directly affects the precision of FOCS. Fiber quarter-wave plates are mainly composed of highly birefringent fibers [4,5] with a beat length in the millimeter range, which requires precise length control. The polarization-transforming fiber could also be used as a quarter-wave plate [6,7] , which is not sensitive to temperature changes.…”

Section: Introductionmentioning

confidence: 99%

Polarization and magneto-optical characteristics of Tb:YAG crystal-derived silica fiber via laser-heating drawing technique

Shi,

Wen,

Xing

et al. 2023

中国光学快报

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Fiber quarter-wave plates and magneto-optical fibers are important components that greatly affect the sensitivity of fiberoptic current sensors. A Tb:YAG crystal-derived silica fiber (TYDSF) was fabricated using a CO 2 laser-heating drawing technique. The linear birefringence of TYDSF was measured as 6.661 × 10 −6 by a microscope birefringence measurement instrument. A fiber quarter-wave plate was fabricated by TYDSF at 1310 nm, which produced circularly polarized light with a polarization extinction ratio of 0.34 dB. Additionally, the linear birefringence of TYDSF was decreased by 22% by annealing at 750°C for 7 h, and the Verdet constants of annealed TYDSF were measured to be 9.83, 6.67, and 3.48 rad=T • m at 808, 980, and 1310 nm, respectively.

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Section: Introductionmentioning

confidence: 99%

Polarization and magneto-optical characteristics of Tb:YAG crystal-derived silica fiber via laser-heating drawing technique

Shi,

Wen,

Xing

et al. 2023

中国光学快报

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“…Besides the four methods summarised above, there are a number of novel current sensors for current measurement, including optical CTs [30][31][32], fluxgate CTs [33,34] and magnetic sensor based CTs [35][36][37][38]. In fact, these novel current sensors are not widely applied in power grids.…”

mentioning

confidence: 99%

A novel measurement‐protection‐integrated current transformer based on hybrid core and magnetic field sensor

Zhang,

Chen,

Tian

et al. 2024

IET Electric Power Appl

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Current transformers (CTs) are widely used for energy metering, relay protection, condition monitoring and control circuits. However, CT saturation may lead to non‐negligible measurement errors and relay malfunctions, posing a threat to the stability and security of the power grid. In order to address the problem of CT saturation, a novel measurement‐protection‐integrated current transformer (MPICT) is proposed. First, the working states of the MPICT are summarised and the approximate expressions for the steady‐state measuring characteristics, the transient response characteristics, and the measurement errors are derived from the equivalent circuit model. Then, the feasibility of the MPICT and the theoretical analyses are verified by the 3D FEM simulation imitating the presented MPICT excited by diverse currents. Finally, a down‐scale prototype is fabricated and a series of tests are conducted in the laboratory to validate the effectiveness of the equipment. The simulation and experimental results suggest that the output of the MPICT can accurately reconstruct the primary current waveform, even if the primary current contains decaying or constant DC component.

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Temperature variation mechanism and error suppression of key parameters of phase modulator in fiber optic current sensing system

Pang,

Gu,

Deng

et al. 2024

Optical Fiber Technology

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A Method for Suppressing Error of Fiber Optic Current Transformer Caused by Temperature Based on λ/4 Wave Plate Fabricated With Polarization-Maintaining Photonic Crystal Fiber

Cited by 5 publications

References 17 publications

Polarization and magneto-optical characteristics of Tb:YAG crystal-derived silica fiber via laser-heating drawing technique

Polarization and magneto-optical characteristics of Tb:YAG crystal-derived silica fiber via laser-heating drawing technique

A novel measurement‐protection‐integrated current transformer based on hybrid core and magnetic field sensor

Temperature variation mechanism and error suppression of key parameters of phase modulator in fiber optic current sensing system

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