Research And Analysis Of The Impact In The Wind-solar-battery Hybrid Generation System

In recent years, wind, solar and other new energy sources has gotten more and more attention from the world. However, wind power and solar power generation will be affected by climate, geographical location and many factors, they are random, intermittent and volatility, which directly affect the safe operation of the power grid. If configure certain scale energy storage system in wind and solar power station, can effectively deal with this series of problems, promote the development and application of new energy in electric power system.Wind-solar-battery Hybrid generation system combined wind, solar and energy storage, make use of the power fluctuation features of the energy storage, can reduce power fluctuation, improve power quality. In addition, it also can enhance the operation reliability of the system. Therefore, paper embarks from the present situation of the new energy application, research and analysis the impact of Wind-solar-battery Hybrid generation system, and using the method of capacity-optimized configuration to reduce the adverse effects. Firstly, wind power, photovoltaic and energy storage system will be briefly described, and then effectively combine them, establish its structural model, introduce its working principle, and then study the impact on the system. For active power fluctuations, this paper put forward a kind of energy storage unit to charge and discharge optimization model, regard the minimum active power fluctuations as the goal, in the IEEE-RTS79 system, adopt LPSP, EXC, ?Ps, m and k five indicators to evaluate the power fluctuations of system. For reliability, through the establishment of the power system reliability assessment model based on time simulation of sequential Monte Carlo method, also in the same system, using LOLP and EENS to evaluate the reliability of the system. Finally, regard cost, active power fluctuation system and reliability as the optimization target by means of the adaptive weighted PSO method, complete capacity of multi-objective optimization algorithm and get the optimal storage capacity. Study shows that after join wind, solar and energy storage, the active power fluctuations and reliability of the system level are improved.