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Methods Adopted for Detailed Modelling of Alternators in State Space for Stability Analysis

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Abstract

The earlier methods adopted for stability analysis of synchronous machines were based on approximations and idealizing assumptions. As such, the accuracy of prediction was limited. The advent of fast-acting computers having large memory space opened up the avenue for accurate analysis by handling detailed modelling. The earlier methods were based on equal area criterion or on swing equation or some of its modified form. But, the methods applied nowadays uses state space representation of the dynamic equations. The paper shows the steps to develop state space models (both with current and flux-linkage states) for transient stability analysis and the methods of linearizing the model about the operating point to assess dynamic stability. Two case studies have been given at the end to illustrate the methods.

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Abbreviations

SCR:

Short Circuit Ratio

TPS:

Thermal Power Station

CMR:

Continuous Maximum Rating

AVR:

Automatic Voltage Regulator

O.C.C.:

Open Circuit Characteristic

S.C.C.:

Short Circuit Characteristic

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Author information

Authors and Affiliations

  1. Department of Electrical Engineering, Techno International, New Town, Kolkata, India

    Milan Basu

  2. Department of Electrical Engineering, Ideal Institute of Engineering, Kalyani, India

    Avik Ghosh

  3. Department of Electrical Engineering, Jadavpur University, Kolkata, India

    Arabinda Das

  4. Power Engineering Department, Jadavpur University, Kolkata, India

    Amarnath Sanyal

Authors
  1. Milan Basu
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  2. Avik Ghosh
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  3. Arabinda Das
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  4. Amarnath Sanyal
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Correspondence to Avik Ghosh.

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Basu, M., Ghosh, A., Das, A. et al. Methods Adopted for Detailed Modelling of Alternators in State Space for Stability Analysis. J. Inst. Eng. India Ser. B 102, 87–98 (2021). https://doi.org/10.1007/s40031-020-00513-1

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