Gain scheduling adaptive control strategies for HVDC systems to accommodate large disturbances

Techniques have been developed to permit the response of the controls for DC transmission systems to adapt to large system changes. A gain scheduling approach tunes the control as an on-line function of the effective short-circuit ratio and contingency indicators. The method has been tested by digital simulation, based on EMTP, of a back-to-back DC system. It has been found to be robust and control performance has been enhanced.<
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