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Development of composite load models of power systems using on-line measurement data

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6 Author(s)
Byoung-Kon Choi ; Sch. of Electr. & Comput. Eng., Cornell Univ., Ithaca, NY ; Hsiao-Dong Chiang ; Yinhong Li ; Yung-Tien Chen
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Load representation has a significant impact on power system analysis and control results. In this paper, composite load models are developed based on on-line measurement data from a practical power system. Three types of static-dynamic load models are derived: general ZIP-induction motor model, exponential-induction motor model and Z-induction motor model. For dynamic induction motor model, two different third-order induction motor models are studied. The performances in modeling real and reactive power behaviors by composite load models are compared with other dynamic load models in terms of relative mismatch error. In addition, numerical consideration of ill-conditioned parameters is addressed based on trajectory sensitivity. Numerical studies indicate that the developed composite load models can accurately capture the dynamic behaviors of loads during disturbance

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Power Engineering Society General Meeting, 2006. IEEE

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