Impact of Commutation Failure Preventions on HVDC System Based on a Multi-Index Value Set Approach

This paper proposes a systematic method, based on rational approximation and value set approach, to unravel the impact of commutation failure preventions (CFPREVs) HVDC system dynamics. First, some output variables in dynamics are identified as performance indices, it is shown that these indices functions CFPREVs parameters. Then numerical method used determine coefficients which describe analytical relationship between suggested To help understand connotation obtained expressions, multi-index exploits power geometry graphics, described detail. Finally, results approach reported.