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A new transient energy function

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Abstract

Starting from normalized generators’ equations of rotor motion with respect to the center of inertia of power systems, post-fault power system dynamic is analogized as a motion of a particle with 1.0 mass in an n-dimensional Euclidean space. A rotational coordinate axis is defined for the moving particle. Transient stability of a multi-machine power system is transformed into a simple one-dimensional motion of particle on the axis. Based upon the above new idea, a new concept transient energy function (NCTEF) is proposed for transient stability assessment of power systems. Case studies on the 10-generator New England power system verified the rationality of NCTEF.

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Authors and Affiliations

  1. School of Electrical Automation & Energy Engineering, Tianjin University, 300072, Tianjin, China

    Fang Dazhong & Song Wennan

  2. Electric Power College, South China University of Technology, 510640, Guangzhou, China

    Zhang Yao

Authors
  1. Fang Dazhong
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  2. Song Wennan
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  3. Zhang Yao
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Correspondence to Fang Dazhong.

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Fang, D., Song, W. & Zhang, Y. A new transient energy function. Sci. China Ser. E-Technol. Sci. 45, 426–432 (2002). https://doi.org/10.1360/02ye9049

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  • DOI: https://doi.org/10.1360/02ye9049

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