This paper introduces the overall construction of the new generation simulation system based on the HCM3000 DC control protection platform, expounds the application of the real-time digital simulator RTLAB and the configuration of the HCM3000 DC control protection platform. This paper discusses in detail the optimization method of HVDC control and protection system in the simulation system, the interface development of connecting real-time digital simulator RTLAB, and realization mode of DC control and protection equipment interconnection, uses engineer workstation to monitor simulation system of real-time data acquisition, and builds the HVDC simulation system with simple structure and economy compared to conventional simulation system. Finally, through the test verification of simulation system based on the actual engineering construction, it shows that the new simulation system based on HCM3000 HVDC control and protection platform can reflect the power system transient physical process accurately, it can be effectively used in the research and optimization of conventional and flexible DC control protection strategies, field accident analysis and decision-making. This work is supported byScience and Technology Project of the Headquarter of State Grid Corporation of China (No. 2018GW01) “Research on Key Technology of ±800 kV VSC-UHVDC Converter Valve and Control Protection”.