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摘要
To study Tianjin grid, this paper proposes a new evaluation equivalence method based on the niche immune algorithm, by which the external grid is equivalent to a generator and the parameters of the generator are certificated by the niche immune algorithm according to the dynamic responses of the tie line. It has been applied to Tianjin grid successfully. Simulation results show that the proposed method has good robustness, high precision, strong practicality, and can also avoid premature convergence. So it solves the difficulty of parameter estimation.
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