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Short-Circuit Calculation in Distribution Networks with Distributed Induction Generators

Author

Listed:
  • Niancheng Zhou

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Fan Ye

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Qianggang Wang

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China
    School of Electricaland Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore)

  • Xiaoxuan Lou

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China
    Department of Electrical Engineering, University of Wisconsin-Milwaukee, Milwaukee, WI 53211, USA)

  • Yuxiang Zhang

    (School of Electricaland Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore)

Abstract

This paper presents an improved current source equivalent model method to determine the short-circuit current of a distribution system with multiple fixed-speed and variable-speed induction generators (IGs). The correlation coefficients of flux components between stator and rotor under the unsymmetrical fault are analyzed using the positive and negative sequence steady-state equivalent circuits of an IG. The terminal voltage and current responses of fixed-speed and variable-speed IGs with and without the rotor slip changes under different penetration levels are compared to investigate the coupling relation between the short-circuit currents of IGs and the nodal voltages in the distribution network. Then the transient equivalent potential of an IG at the grid fault instant is derived. Sequence components of the short-circuit current in the network can be determined using the proposed technique. The correctness of the proposed method is verified using dynamic simulation.

Suggested Citation

  • Niancheng Zhou & Fan Ye & Qianggang Wang & Xiaoxuan Lou & Yuxiang Zhang, 2016. "Short-Circuit Calculation in Distribution Networks with Distributed Induction Generators," Energies, MDPI, vol. 9(4), pages 1-21, April.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:4:p:277-:d:67936
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    References listed on IDEAS

    as
    1. El-Naggar, Ahmed & Erlich, Istvàn, 2016. "Analysis of fault current contribution of Doubly-Fed Induction Generator Wind Turbines during unbalanced grid faults," Renewable Energy, Elsevier, vol. 91(C), pages 137-146.
    2. Ouhrouche, Mohand, 2009. "Transient analysis of a grid connected wind driven induction generator using a real-time simulation platform," Renewable Energy, Elsevier, vol. 34(3), pages 801-806.
    3. Li, H. & Zhao, B. & Yang, C. & Chen, H.W. & Chen, Z., 2011. "Analysis and estimation of transient stability for a grid-connected wind turbine with induction generator," Renewable Energy, Elsevier, vol. 36(5), pages 1469-1476.
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