A study is made on the renewable energy power system in terms of physical simulation experiments. Firstly, it summarizes the development status of renewable energy power system at home and abroad. Secondly, it elaborates the necessity of researching renewable energy power system through physical simulation experiments and the research status of physical simulation experiments. Then, it conceives and introduces the major components of experimental platform. Lastly, it formulates the experiment plans by applying experimental platform and focusing on dynamic/static state characteristics of grid-connected operation, and analyzes the results which show that physical experimental platform is significant for the study of renewable energy power system.