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Research on Differential Protection of Generator Based on New Braking Mode

Author

Listed:
  • Jingde Xia

    (School of Electronics and Information, Xi’an Polytechnic University, Xi’an 710048, China)

  • Shaozhuo Li

    (School of Electronics and Information, Xi’an Polytechnic University, Xi’an 710048, China)

  • Shuping Gao

    (School of Electrical and Control Engineering, Xi’an University of Science and Technology, Xi’an 710054, China)

  • Wenquan Shao

    (School of Electronics and Information, Xi’an Polytechnic University, Xi’an 710048, China)

  • Guobing Song

    (School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China)

  • Changjiang Chen

    (School of Electronics and Information, Xi’an Polytechnic University, Xi’an 710048, China)

Abstract

In view of the difficulties in coordination between reliability and sensitivity of conventional generator differential protection, this paper presents a novel generator differential protection scheme based on a new braking method. On the basis of the mathematical model of the field-circuit coupling method and the electrical network cascade characteristics, the stator windings were combined and decoupled by the improved six-sequence component method to eliminate electromagnetic coupling between winding coils. In accordance with the basic characteristics of longitudinal impedance, the function of sub-item discrimination was realized. Numerous simulations and the up-to-date dynamic experiments showed that the proposed method has good state discrimination ability and can effectively resist the influence of current transformer saturation. Thus, it has an excellent prospect for engineering promotion.

Suggested Citation

  • Jingde Xia & Shaozhuo Li & Shuping Gao & Wenquan Shao & Guobing Song & Changjiang Chen, 2021. "Research on Differential Protection of Generator Based on New Braking Mode," Energies, MDPI, vol. 14(7), pages 1-16, March.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:7:p:1857-:d:525021
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    References listed on IDEAS

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    1. Jian Zhang & Mingjian Cui & Yigang He, 2020. "Parameters Identification of Equivalent Model of Permanent Magnet Synchronous Generator (PMSG) Wind Farm Based on Analysis of Trajectory Sensitivity," Energies, MDPI, vol. 13(18), pages 1-18, September.
    2. Khalil Touimi & Mohamed Benbouzid & Zhe Chen, 2020. "Optimal Design of a Multibrid Permanent Magnet Generator for a Tidal Stream Turbine," Energies, MDPI, vol. 13(2), pages 1-19, January.
    3. Hanying Gao & Wen Zhang & Yu Wang & Zhuo Chen, 2019. "Fault-Tolerant Control Strategy for 12-Phase Permanent Magnet Synchronous Motor," Energies, MDPI, vol. 12(18), pages 1-17, September.
    4. Zhenxing Li & Yuting Fu & Ling Wang & Lu Wang & Wenliang Bao & Yanxia Chen, 2019. "The Analysis and Solution of Current Differential Protection Maloperation for Transmission Line with High Series Compensation Degree," Energies, MDPI, vol. 12(9), pages 1-22, April.
    5. Ying Zhu & Yuping Li & Jianbin Sang & Minglei Bao & Haixiang Zang, 2018. "Analysis and Improvement of Adaptive Coefficient Third Harmonic Voltage Differential Stator Grounding Protection," Energies, MDPI, vol. 11(6), pages 1-15, June.
    6. Xunjun Chen & Zhigang Liu, 2019. "Impedance Modeling and Stability Analysis of the Converters in a Double-Fed Induction Generator (DFIG)-Based System," Energies, MDPI, vol. 12(13), pages 1-23, June.
    7. Guodong Sun & Guijie Yang & Yanyi Wang & Jianyong Su, 2019. "Unified Fault-tolerant Control Strategy with Torque Ripple Compensation for Five-phase Permanent Magnet Synchronous Motor Based on Normal Decoupling," Energies, MDPI, vol. 12(6), pages 1-20, March.
    8. Tao Zheng & Xinhui Yang & Xingchao Guo & Xingguo Wang & Chengqi Zhang, 2020. "Zero-Sequence Differential Current Protection Scheme for Converter Transformer Based on Waveform Correlation Analysis," Energies, MDPI, vol. 13(7), pages 1-14, April.
    9. Bingtuan Gao & Wei Wei & Luoma Zhang & Ning Chen & Yingjun Wu & Yi Tang, 2014. "Differential Protection for an Outgoing Transformer of Large-Scale Doubly Fed Induction Generator-Based Wind Farms," Energies, MDPI, vol. 7(9), pages 1-20, August.
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