Presenting an Adaptive Restraint Method to Improve Performance of Ground Differential Protection of Power Transformer

Document Type : Original Article

Authors

Department of Electrical and Computer Engineering, Babol Noshirvani, University of Technology, Babol, Iran

Abstract

The ground differential (GD) relay is used to detect internal ground faults on the power transformer windings and terminals. In fact, this relay is employed as a complement to the phase differential (PD) relay. However, its stability is affected by magnetic saturation in current transformers (CTs) cores so that the spurious differential current caused by CT saturation may lead to the relay malfunction. In this paper, by modifying the restraining current definition in a conventional method, an adaptive restrain method is proposed. To evaluate the proposed method performance compared with conventional method, a real 230/63 kV power transformer under a large number of internal fault, external fault and in rush current cases are simulated in PSCAD/EMTDC environment. It is worth noting that Jiles-Atherton (JA) model is utilized to simulate CTs. MATLAB software is used to implement and analyze these methods using obtained simulation. Obtained results show that the proposed method is quite superior to the conventional method, despite its simplicity.

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Main Subjects

References

  1. Ebadi, A., Hosseini, S.M. and Abdoos, “A New Simple Method to Avoid Maloperation of Transformer Restricted Earth Fault Relay during External Fault Events”, International Journal of Engineering, Transactions C: Aspects, 34, No. 9, (2021), 2070-2076. doi: 10.5829/IJE.2021.34.09C.04
  2. Banaei Roudi, F. and Abdoos, A.A., “Detection of Internal Fault from External Fault and Inrush Current in Power Transformers Based on Combination of VMD And ELM”, Computational Intelligence in Electrical Engineering, 9, No. 1, (2018), 65-77. doi: 10.22108/ISEE.2018.110376.1115
  3. Ebadi, A., Hosseini, S.M. and Abdoos, A.A., “Designing of a New Transformer Ground Differential Relay Based on Probabilistic Neural Network”, Energy Engineering & Management, 9, No. 4, (2020), 2-13.
  4. Apostolopoulos, C. And Tsakiris, D., “Design and Performance Evaluation of a High-Impedance REF Scheme for MV/LV Transformers”, IEEE Transactions on Industry Applications, 51, No. 6, (2015), 5398-5409. doi: 10.1109/TIA.2015.2435003
  5. Ebadi, A., Hosseini, S.M. and Abdoos, “Immunity Improvement of a Low-Impedance Restricted Earth Fault Relay by Making its Mechanism Intelligent based on Support Vector Machine”, Computational Intelligence in Electrical Engineering, 9, No. 2, (2018), 29-40. doi: 10.22108/ISEE.2018.111464.1132
  6. Ebadi, A., Hosseini, S.M. and Abdoos, A.A., “A New Time-Frequency Analysis Based Supervision Method for the Transformer Restricted Ground Fault Relay”, International Journal of Electrical Power and Energy Systems, Vol. 129, (2021), 106858. doi: 10.1016/j.ijepes.2021.106858
  7. Ebadi, A., Hosseini, S.M. and Abdoos, A.A., “A New Artificial Intelligence based Supervision Method for Low-Impedance REF Relays”, Electric Power Systems Research, Vol. 195, (2021), 107177. doi: 10.1016/j.epsr.2021.107177
  8. Taghipour Gorji, R., Hosseini, S.M., Abdoos, A.A. and Ebadi, A., “A Hybrid Intelligent Method for Compensation of Current Transformers Saturation Based on PSO-SVR”, Periodica Polytechnica Electrical Engineering and Computer Science, Vol. 65, No. 1, (2021), 53-61. doi: 10.3311/PPee.16248
  9. Subramanian, P.V. and Ajitha, L., “Practical Considerations for High Impedance Restricted Earth Fault Relay Settings”, Journal of The Institution of Engineers (India): Series B, 96, No. 1, 107-110, (2015), doi: 10.1007/s40031-014-0124-x
  10. GE Co., Technical Documents of T60. Transformer Management Relay, UR Series Instruction Manual. Revision 4.8X; 2005.
  11. Siemens Co., Technical Documents of 7UT6. Numerical differential protection relay for transformers, generators, motors, and branch points. 2003.
  12. Davarpanah, M., M. Sanaye-Pasand, M. Iravani, R., “Performance Enhancement of the Transformer Restricted Earth Fault Relay”, IEEE Transactions on Power Delivery, Vol. 18, No. 1, (2012), 467-474. doi: 10.1109/TPWRD.2012.2208204
  13. Ebadi, A., Hosseini, S.M. and Abdoos, A.A., “A New Restricted Earth Fault Relay Based on Artificial Intelligence”, International Journal of Engineering, Transactions A: Basics, 32, No. 1, (2019), 69-70. doi: 10.5829/ije.2019.32.01a.08
  14. Krstivojevic, J.P. and Djurić, M.B., “A New Algorithm for Avoiding Maloperation of Transformer Restricted Earth Fault Protection Caused by The Transformer Magnetizing Inrush Current and Current Transformer Saturation”, Turkish Journal of Electrical Engineering and Computer Sciences, 24, No. 6, (2016), 5025-5042. doi: 10.3906/elk-1409-92
  15. Krstivojevic, J.P. and Djurić, M.B., “A New Method of Improving Transformer Restricted Earth Fault Protection”, Advances in Electrical and Computer Engineering, 14, No. 3, (2014), 41-48. doi: 10.4316/AECE.2014.03005
International Journal of Engineering
Volume 35, Issue 11
TRANSACTIONS B: Applications
November 2022
Pages 2213-2219

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