Wind/solar Hybrid Generation System Dynamic Analysis

Solar and wind power are the most common natural resources. They have many advantages, for example, inexhaustible, distributed widely and whithout transport. They have been used repeatedly and taken in the region. Therefore, they, which do not pollute the environment and do not destroy the ecology, have been used scattered. In terms of time and place, these renewable energy sources are highly complementary, and using the best match of wind and solar power generation technology is an economical power generation system, which is of great significance in soluting power supply problem of remote areas, so it is necessary to study wind and solar power generation systems.In the paper, by combining with the characteristics of solar and wind,working principle is studied, on which the solar power and wind power generation system generate, converse and control energy during operation. In addition,the output power control of the solar photovoltaic and wind power systemit is discussed briefly,which takes independent maximum power point tracking control strategy. PV array, wind turbine circuit and mathematical models are established. For photovoltaic systems and wind power system Mathematic model and simulation analysis of the MPPT.System output power and node voltage is calculated, namely power flow calculation in the case of normal operation of the system. In the paper, solar power system is treated as an independent power supply, as a node, output active power of PV; wind power generation system is treated as an independent power supply, as a PQ node. So the power system is formed by the two supply power source systems. When the load is cut out, or access, system voltage and current transmission lines are discussed, which is a dynamic process of removing and combined traditional power system dynamic analysis. Analyzed by the load caused by system dynamics of the transition process, draw the disturbances occurred loading position is one of the important factors that affect system stability. Study on short-circuit fault analysis drew further away from the system load short circuit faults can cause system instability, or even crash the independent power.