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Time domain modeling of external systems for electromagnetic transients programs

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2 Author(s)
Abur, A. ; Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA ; Singh, H.

A time domain method for accurate modeling of external power systems in electromagnetic transients programs (EMTPs) is presented. The time domain response of the external system to a multisine excitation signal is utilized to identify a discrete-time model for the external system. The identified model parameters are determined by least-squares estimation. The details of building both single-phase and multiphase equivalents are given. The validity of the equivalents is verified by comparing the electrical transients generated due to the energization of an open-ended line using the full and the equivalent external system. The method is being extended to multiport equivalents

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Power Systems, IEEE Transactions on  (Volume:8 ,  Issue: 2 )