Share This Article:

Analysis on the Transfer Characteristics of Rogowski-coil Current Transformer and Its Influence on Protective Relaying

Abstract PP. 1324-1329
DOI: 10.4236/epe.2013.54B251    3,606 Downloads   5,080 Views   Citations

ABSTRACT

This paper systematically analyzes the transfer characteristics of the Rogowski-coil Current Transformer and its effect on protective relaying through theoretical analysis, experiments and simulations. The frequency characteristics and transient characteristics of Rogowski transducer and Rogowski-coil Current Transformer are deeply analyzed based on the physical structure of the transformer. It is revealed that broad bandwidth of the transformer can improve the performance of protective relaying, and the bandwidth is determined mainly by the parameters of the Rogowski transducer and signal processing circuits. It is also discovered that the measurement errors of transient current mainly depend on the abilities for the current transformer to reproduce an accurate replica of the decaying dc components, which is mainly decided by the decay time constant of the aperiodic component of transient current and the parameters of the integral unit. Finally, some measures are proposed for the performance improvement of Rogowski-coil Current Transformer to meet the requirements of protective relaying system in terms of structural design and testing standards.

Cite this paper

Y. Wang, J. Li, Y. Hu, R. An, Z. Cai and R. He, "Analysis on the Transfer Characteristics of Rogowski-coil Current Transformer and Its Influence on Protective Relaying," Energy and Power Engineering, Vol. 5 No. 4B, 2013, pp. 1324-1329. doi: 10.4236/epe.2013.54B251.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1] D. A. Ward and J. La T. Exon, “Using Rogowski Coils for Transient Current Measurements,” Engineering Science and Education Journal, Vol. 2, No. 3, 1993, pp. 105-113. doi:10.1049/esej:19930034
[2] L. Kojovic, “Rogowski Coils Suit Protective Relaying and Measurement,” IEEE Computer Application in Power, Vol. 10, No. 2, 1997, pp. 47-52. doi:10.1109/67.595293
[3] J. D. Ramboz, “Machinable Rogowski Coil Design and Calibration,” IEEE Transactions on Instrumentation and Measurement, Vol. 45, No. 2, 1996, pp. 511-515. doi:10.1109/19.492777
[4] S. N. Luo, Z. B. Tian and X. C. Zhao, “Performance analysis of Rogowski-coil Current Transformer,” Proceedings of the CSEE, Vol. 24, No. 3, 2004, pp. 108-113.
[5] Q. Chen, H. B. Li, M. M.Zhang, et al., “Design and CharActeristics of Two Rogowski Coils Based on Printed Circuit Board,” IEEE Transaction on Instrumentation and Measurement, Vol. 55, No. 3,2006, pp. 939-943. doi:10.1109/TIM.2006.873788
[6] C. Y. Wang, Y. P. Chen, G. Zhang, et al., “Analysis and Control on the Position Errors of PCB Air-core Coils,” Proceedings of the CSEE, Vol. 55, No. 3, 2008, pp. 103-108.
[7] E. F. Donaldson, J. R. Gibson, G. R. Jones, et al.,” Hybrid Optical Current Transformer with Optical and Power-line Energisation,” IEE Proceedings-Generation Transmission and Distribution, Vol. 147, No. 5, 2000, pp. 304-309. doi:10.1049/ip-gtd:20000604
[8] G. Yang and X. R. Liu, “Improvements on Circuit Design for Highvoltage Side of Active Power Electronic Current Transducer,” Power System Technology, Vol. 29, No. 14, 2005, pp. 81-84.
[9] K. W. Zhang,, N. Wang, X. Y. Duan, et al., “A Digital Integrator for Electronic Current Transducer,” Proceedings of the CSEE, Vol. 24, No. 12, 2004, pp. 104-107.
[10] Y. Wang, B. d. Cao and T. Jiang, “Fast Data Processing for Merging Unit of Electronic Transformer,” Power System Technology, Vol. 33, No. 1, 2009, pp. 87-91.
[11] W.B. Li, C.X. Mao, J.M. Lu, et al., “Study of the Influence of the Distributed Capacitance on Dynamic Property of Rogowski Coil,” Transactions of China Electrotechnical Society, Vol. 19, No. 6, 2004, pp. 12-17.
[12] Y. Xu and B. Ran, “Analysis and Simulation of Air-core Coil Transducer’s Response to Transient Current,” Transactions of China Electrotechnical Society, Vol. 19, No. 11, 2004, pp. 61-65.
[13] G. Zhang, C.Y. Wang and Y. P. Chen, “Transient Behavior of PCB Air-core Coil Current Transformer,” Transactions of China Electrotechnical Society, Vol. 25, No. 11, 2010, pp. 25-29.
[14] T. Wu, Y. Q. Zhou and W. Gong, “Performance Analysis on Electronic Current Transformer Based on PCB Planar-type of Air Core Coil,” Power System Technology, Vol. 34, No. 6, 2010, pp. 210-214.
[15] IEC60044-8, “Instrument Transformers: Part 8 Electronic Current Transformers,” 2002.
[16] GB/T20840.8-2007, “Instrument Transformers —Part:8: Electronic Current Transformers,” 2007.
[17] J. Yu, X. F. Xiong and Y. Zhang, “Research and Simulation on New Reliability Measures for Digital Substation Protection System,” Power System Technology, Vol. 33, No. 4, 2009, pp. 28-33.
[18] Z. Q. Li, Z.X. Zhou, Y. Huang, et al., “Research on Applicability of Protective Relaying in Digital Substations”. Power System Technology, Vol. 35, No. 5, 2011, pp. 210-215.

  
comments powered by Disqus

Copyright © 2020 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.