Research on a new fiber-optic axial pressure sensor of transformer winding based on fiber Bragg grating

Abstract

Based on the principle of the fiber Bragg grating, a new type of fiber-optic pressure sensor for axial force measurement of transformer winding is designed, which is designed with the structure of bending plate beam, the optimization of the packaging process, and material of the sensor. Through the calibration experiment to calibrate the sensor, the field test results of the Taikai transformer factory show that the sensitivity of the sensor is 0.133 pm/kPa and the repeatability error is 2.7% FS. The data of the fiber-optic pressure sensor in different positions maintain consistent and repeatable, which can meet the requirement of the real-time monitoring of the axial force of transformer winding.

Keywords

Transformer winding / pressure sensor / fiber Bragg grating (FBG) / axial force

References

[1] Fonseca W. D. S., Lima D. D. S., Lima A. K. F., Soeiro N. S., Nunes M. V. A.. Analysis of electromagnetic-mechanical stresses on the winding of a transformer under inrush currents conditions. International Journal of Applied Electromagnetics and Mechanics, 2016, 50(4): 511-512.

[2] Marinescu A., Opran G., Teodorescu M., Dinu I., Tascau L.. Fibre optic based clamping force monitoring system for power transformers. Proceeding of 13th International Conference on Optimization of Electrical and Electronic Equipment, 2012 282-283.

[3] Chen Z. F., Zhou C. H., Xu L. Y., Liu W., Xu Z. B.. On-line monitoring method of transformer winding deformation based on optical fiber stress sensing technology. Electric Age, 2014, 8, 74-76.

[4] Wen Q. Z., Zhu J. H., Li G. N., Huang J. B., Yu C.. The experimental study and structural design of fiber grating pressure sensor for pressure sensitivity enhancement. Journal of Wuhan University, 2012, 58(5): 411-413.

[5] Huang J.. Development and application of fiber Bragg grating pressure sensors, 2013

[6] Sun A., Qiao X. G., Jia Z. A., Guo T., Chen C. Y.. Strain response of a special cantilever-based fibre Bragg grating. Journal of Optoelectronics Laser, 2004, 15(2): 153-154.

[7] Guo T., Zhao Q. D., Liu L. H., Huang G. L., Xue L. F., Li G. Y., . Light intensity-referred and temperature-insensitive fiber Bragg grating dynamic pressure sensor. Acta Optica Sinica, 2007, 27(2): 208-209.

[8] Wang J. Y., Jiang L., Sun Z. R., Sun B. X., Hu F. X., Zhang G. D., . Research on the surface subsidence monitoring technology based on fiber Bragg grating sensing. Photonic Sensors, 2016, 7(1): 20-21.

[9] Ahmad H., Harun S. W., Chong W. Y., Zulkifli M. Z., Thant M. M. M., Yusof Z., . High-sensitivity pressure sensor using a polymer embedded FBG. Microwave & Optical Technology Letters, 2008, 50(1): 60-61.

[10] Wang Y., Liu T. G., Liu L. N., Jiang J. F.. Study on fiber Bragg grating sensor encapsulated by the alloyed steel. Optical Technique, 2006, 32(6): 923-924.

[11] Hu C. C., Zhang D. S., Wen C. Y., He W.. Researches on fiber Bragg grating pressure sensor. Journal of Wuhan University of Technology, 2007, 29(1): 52-54.

[12] Zhao Y., Meng Q. Y., Chen K.. Novel current measurement method based on fiber Bragg grating sensor technology. Sensors and Actuators, 2006, 126(1): 112-116.