Uncertainty analysis of fiber optical current transformer on-site calibration

Wei Gao; Guochen Wang; Yongguang Wang; Yuxin Zhao; Hongze Gao

doi:10.1117/12.2626693

27 March 2022 Uncertainty analysis of fiber optical current transformer on-site calibration

Wei Gao, Guochen Wang, Yongguang Wang, Yuxin Zhao, Hongze Gao

Proceedings Volume 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications; 12169B7 (2022) https://doi.org/10.1117/12.2626693
Event: Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 2021, Kunming, China

Abstract

The on-site calibration of fiber optical current transformer is often influenced by the environmental factors, resulting in certain deviation of results. We proposed the sources of uncertainty in this paper, which mainly include: the uncertainty u_A(ε) induced by the error of standard FOCT, the uncertainty u_B(ε) induced by the field environment and improper operation method, and the uncertainty u_C(ε) induced by the calibrator unit. In further, the u_B(ε) is analyzed detailed. This component is mainly produced by temperature, vibration and inhomogeneous magnetic field. The experimental results show that the errors of temperature, vibration and inhomogeneous magnetic field are 0.020%, 0.051% and 0.049%, respectively. Finally, we can calculate the synthetic standard uncertainty and expanded uncertainty of the DC calibration (P=99%) are 4.8×10^-4 and 1.4×10^-3, respectively. And the synthetic standard uncertainty and expanded uncertainty of the AC calibration (P=99%) are 5.6×10^-4and 1.6×10^-3 respectively. The results show that the scheme can satisfy the uncertainty requirements of the direct comparison method (0.5S level).

Citation Download Citation

Wei Gao, Guochen Wang, Yongguang Wang, Yuxin Zhao, and Hongze Gao "Uncertainty analysis of fiber optical current transformer on-site calibration", Proc. SPIE 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 12169B7 (27 March 2022); https://doi.org/10.1117/12.2626693

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