Dynamic system monitoring (DSM) for HVDC modulation control

As part of an advanced power modulation control system for HVDC lines, dynamic system monitors (DSMs) were installed at the DC terminals of the Square Butte system. The monitors are used to validate the computer models used for the controller design and to validate the performance of the controllers after installation. The use of Prony analysis and Fourier techniques to analyze system disturbances and to validate the computer models is described. Excellent results are achieved for some well-defined disturbances.<
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