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On-line measurement-based model parameter estimation for synchronous generators: solution algorithm and numerical studies

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6 Author(s)
Jin-Cheng Wang ; Sch. of Electr. Eng., Cornell Univ., Ithaca, NY, USA ; Hsiao-Dong Chiang ; Huang, Chiang-Tsung ; Yung-Tien Chen
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In this paper, a sixth-order synchronous generator model identification technique from online measurements is considered. An algorithm is devised to identify the generator model. A constrained conjugate gradient method is incorporated into the algorithm to guarantee rapid convergence to the final solution. Using the algorithm, a complete generator model is derived from online measurements recorded by a plant transient recording system during a system disturbance. In addition, the algorithm does not greatly rely upon the accuracy of the initial estimates, allowing the initial estimates to deviate reasonably far from the true parameters. Detailed numerical studies of the Taipower system using raw and filtered data are included

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Energy Conversion, IEEE Transactions on  (Volume:9 ,  Issue: 2 )