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CHEN Xu, ZHOU Nian-cheng, WANG Qiang-gang, YANG Ji-wang, XIONG Xi-cong, WEN Xu. Evaluation of Asymmetric Short Circuit Current Peak for Induction Generator Integrated into Distribution Network[J]. Journal of University of Electronic Science and Technology of China, 2014, 43(5): 706-711. doi: 10.3969/j.issn.1001-0548.2014.05.013
Citation: CHEN Xu, ZHOU Nian-cheng, WANG Qiang-gang, YANG Ji-wang, XIONG Xi-cong, WEN Xu. Evaluation of Asymmetric Short Circuit Current Peak for Induction Generator Integrated into Distribution Network[J]. Journal of University of Electronic Science and Technology of China, 2014, 43(5): 706-711. doi: 10.3969/j.issn.1001-0548.2014.05.013
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Evaluation of Asymmetric Short Circuit Current Peak for Induction Generator Integrated into Distribution Network

doi: 10.3969/j.issn.1001-0548.2014.05.013
  • 1.

    Guangdong Key Laboratory of Clean Energy Technology,South China University of Technology Guangzhou 510640;

  • 2.

    State Key Laboratory of Power Transmission Equipment & System Security and New Technology,Chongqing University Shapingba Chongqing 400044;

  • 3.

    Zhuhai Power Supply Bureau,Guangdong Power Grid Corporation Zhuhai 519000;

  • 4.

    Chongqing Electric Power Research Institute,State Grid Chongqing Electric Power Company Jiangbei Chongqing 401123

  • Received Date: 2013-08-10
  • Rev Recd Date: 2014-02-28
  • Publish Date: 2014-10-15
  • The short circuit current calculation is an important foundation for planning and protection of distribution grid with distributed generation. The transient characteristics of induction generator (IG) are investigated when the unsymmetrical fault occurs in the distribution network, and the analytic formula of its stator current under unsymmetrical short circuit is derived. The impact of an IG rotor speed and the fault initial time (or phase) to the short circuit current under unsymmetrical fault are studied when the short circuit occurs. According to the equation of rotor motion and its steady-state circuits in the positive and negative sequence component networks, an evaluation method to determine the current peak of unsymmetrical short circuit for an IG in distribution grid is proposed by considering its rotor speed variations. The correctness of the method is verified by using the fifth electromagnetic transient model of IG in PSCAD/EMTDC simulation software.
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Evaluation of Asymmetric Short Circuit Current Peak for Induction Generator Integrated into Distribution Network

doi: 10.3969/j.issn.1001-0548.2014.05.013
  • 1. Guangdong Key Laboratory of Clean Energy Technology,South China University of Technology Guangzhou 510640;
  • 2. State Key Laboratory of Power Transmission Equipment & System Security and New Technology,Chongqing University Shapingba Chongqing 400044;
  • 3. Zhuhai Power Supply Bureau,Guangdong Power Grid Corporation Zhuhai 519000;
  • 4. Chongqing Electric Power Research Institute,State Grid Chongqing Electric Power Company Jiangbei Chongqing 401123
  • Received Date: 2013-08-10
  • Rev Recd Date: 2014-02-28
  • Publish Date: 2014-10-15

Abstract: The short circuit current calculation is an important foundation for planning and protection of distribution grid with distributed generation. The transient characteristics of induction generator (IG) are investigated when the unsymmetrical fault occurs in the distribution network, and the analytic formula of its stator current under unsymmetrical short circuit is derived. The impact of an IG rotor speed and the fault initial time (or phase) to the short circuit current under unsymmetrical fault are studied when the short circuit occurs. According to the equation of rotor motion and its steady-state circuits in the positive and negative sequence component networks, an evaluation method to determine the current peak of unsymmetrical short circuit for an IG in distribution grid is proposed by considering its rotor speed variations. The correctness of the method is verified by using the fifth electromagnetic transient model of IG in PSCAD/EMTDC simulation software.

CHEN Xu, ZHOU Nian-cheng, WANG Qiang-gang, YANG Ji-wang, XIONG Xi-cong, WEN Xu. Evaluation of Asymmetric Short Circuit Current Peak for Induction Generator Integrated into Distribution Network[J]. Journal of University of Electronic Science and Technology of China, 2014, 43(5): 706-711. doi: 10.3969/j.issn.1001-0548.2014.05.013
Citation: CHEN Xu, ZHOU Nian-cheng, WANG Qiang-gang, YANG Ji-wang, XIONG Xi-cong, WEN Xu. Evaluation of Asymmetric Short Circuit Current Peak for Induction Generator Integrated into Distribution Network[J]. Journal of University of Electronic Science and Technology of China, 2014, 43(5): 706-711. doi: 10.3969/j.issn.1001-0548.2014.05.013
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