摘要：HVDC auxiliary emergency control can improve the transient stability of the AC/DC
interconnected power grid. A coordination and optimization strategy of multi-infeed HVDC
auxiliary power/frequency combination control is proposed in this paper. According to tie-line
faults and regional internal faults, the combined controller is coordinated and optimized by
multi-infeed effective short circuit ratio proportion coefficient (MESCR-PC) and multi-infeed
power support factor proportion coefficient (MPSF-PC). Finally, the multi-infeed HVDC
transmission system is built on the PSCAD simulation platform. The power grid voltage,
frequency and generator power angle are took as the control objectives, the effectiveness of the
proposed method is verified by the simulation results.
关键词：DC emergency control; regional internal disturbance; tie-line faults; multi-infeed effective;
short circuit ratio; power support factor; transient stability.
