This paper deals with advanced control strategies for the Hybrid HVAC-HVDC interconnection of large power systems. The simulations use of a simplified model of the European ENTSO-E and the Russian IPS/UPS systems developed within the scope of the ICOEUR project (Intelligent Coordination of Operation and Emergency Control of EU and Russian Power Grids). The plausibility of ENTSO-E - IPS/UPS interconnection using a hybrid HVAC-HVDC interface is discussed and the benefits of a newly developed control algorithm for advanced control of hybrid interface are presented. The simulation results demonstrate that the centralized control of the power flows on HVDC lines allows the performance and the security of the hybrid interconnections and the interconnected power systems to be greatly enhanced.