Abstract：In order to give full play to the complementary generation characteristics of the system,this study aimed to present a promising solar-hydro generating system by Simulink, including the hydro-turbine governor system, the solar power generation system and the power system and load. On the basis of verifying the correctness of the model, the power complementary process of the system is simulated in second scale, and the parameter uncertainty of hydropower system is conducted to improve the power regulation capacity. The results show that the variations of In, Fr, Eqh, Eqy and Eh have low sensitivities to the regulation steady value of hydropower system, while Eqh and Ey influence largely the regulation steady value where Ey is positive correlation with the regulation steady value and the tiny variation of Eqh may lead to considerable unstablility of hydropower system. The implemented model, methods and results will provide important guidance for renewable energy policy and related risk assessment.
