Abstract
The paper refers specifically to the process by which numerical solutions for transmission line step responses and indicial-impedance functions, as formed from inverse Fourier transform evaluations, are used in time-convolution electromagnetic transient analysis in power systems. Previously, curve-fitting and linear-segment matching procedures have been adopted, whereas the present paper develops a form of representation based on sequences of impulse samples. By avoiding curve-fitting altogether, the proposals further advance time-convolution methods in power systems, and improve the procedures required in applying them in practice. Typical solutions in the paper confirm the solution accuracy to which the proposals can lead, together with their computing time requirements.
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