Frequency control coordination among non-synchronous AC areas connected by a multi-terminal HVDC grid.

摘要: This thesis addresses the problem of frequency control in a power system composed several non-synchronous AC areas connected by multi-terminal HVDC grid. For this system, we propose three schemes, two for primary and one secondary control. Based on remote measurements other areas' frequencies, first scheme modifies injections from different into DC grid so as to make collectively react load imbalances. collective reaction allows each individual area downscale its reserves. The second has same objective with one, but acts voltages converters. In particular, it voltage converter based deviation is to. last aims at restoring frequencies exchanges their nominal or scheduled values aftermath imbalance. It can be combined schemes. Theoretical studies reveal stability properties Simulation results benchmark five confirm good performance.