Research On Complementary Of Wind Power And Photovoltaic Power Generation System

In recent years, due to the tranditional energy crisis, the capacity of new energy gid-on is increased fast. However, the fluctuation of new energy brings a series of new challenges to system, especially in terms of system stability. Because it’s existed that the complementary between wind power and photovoltaic, the system which combines wind power with photovoltaic can effectively reduce the fluctuationof wind power and photovoltaic. In order to further reduce the influence of new energy on the system stability, and generally energy storage device is used to control the power regulation of hybrid system, so wind-photovolatic hybrid power system can be referred to as wind-photovolatic storage hybrid power systems. However in long terms wind and solar hybrid system being incorporated into the grid scheduling system, realizing that the hybrid system can be controlled, is the tend of large scenery mixed system incorporated into the grid reliably and securely.In order to improve the stability of the hybrid power system power out, this paper carries out the following several aspects:1. Respectively analyze the characters of wind power and photovoltaic generator groups under a certain installed capacity monthly and hourly under different tilt angle.2. Respectively deeply analyze the power characteristics of wind power, photovoltaic power generation, especially to the tilt Angle of photovoltaic power generation has been optimized, compared the photovoltaic different Angle on the influence of the hybrid system.3. Respectively analyze the effect of different ratio of wind power with photovoltaic on the time scale of years, and days to optimize the best match of wind power and photovoltaic, on this basis, further consider energy storage battery with different capacity to scenery storage hybrid power systems.This paper establishs the goal function which maintain the wind generator and photovoltaic generator unchanged, and the constraint conditions which contains scheduling system issued instructions and national standard of minimum output power to limit. In this paper, the proposed strategy has the following two points: First, the new energy unit and the prediction power of the information are added to the system testing allocation strategy. Second, in the allocation policy considers about the new energy state information and the classification of the unit.On the basis of the above control strategy, this paper respectively analyses the characteristics of the wind power photovoltaic power itself, and search out the optimum Angle of the photovoltaic power generation, at the same time, the proposed power allocation strategy for this article has carried on the simulation, the simulation results compared with the average allocation strategy, simulation results analysis, the results show that the allocation strategy design, this paper can efficiently provide energy storage efficiency of the power system, and with smaller error.