Study On Power Supply Of Independent System By Wind-solar Complementary Power Generation

With the rapid economic development and the improvement of people's living standards,resulting in huge consumption of resources and a sharp shortage,so the development and utilization of new energy has become an urgent problem for people to solve.Among the new energy sources,solar energy and wind energy are the most common and the largest reserves of new energy,because they are the most convenient in utilization and development,and they are complementary in time and space,and have great advantages in environmental protection and economy.We can make full use of these characteristics to apply them.In many remote areas or areas with inconvenient power supply,it can make full use of the complementary characteristics of wind and solar energy to power independent systems.Although wind and solar energy are renewable and inexhaustible,there are many problems in the process of development and utilization.In this paper,according to the meteorological conditions of the experimental site,an independent system(an independent family)is taken as the research object.Through the statistical comparison of the power generation of wind turbine and photovoltaic panel,the statistical comparison of the power generation of vertical axis wind turbine and horizontal axis wind turbine,the storage of battery,and the 24-hour power consumption of a family To match the number of wind turbines with the number of photovoltaic panels.The main work of this paper is as follows: firstly,an experimental platform of wind solar complementary power generation system is built in the experimental site,which is composed of a vertical axis wind turbine,a horizontal axis wind turbine and a photovoltaic panel.Two controllers and inverters are used to monitor the data;secondly,without knowing the local wind resources and solar energy,experiments are carried out first,and the data are measured separately The power generation capacity of vertical axis wind turbine,horizontal axis wind turbine and photovoltaic panel in the local natural environment is statistically compared;then,the power consumption equipment and power consumption of a family and independent system are statistically calculated and analyzed,so as to obtain the best ratio of the power supply of the wind and solar complementary power generation system to the independent system,providing a certain reference.The main conclusions are as follows:(1)According to the statistics of 76 days' wind power generation,the power generation of vertical wind turbine and horizontal axis wind turbine is studied.In the last 13 days of data statistics,the daily average power generation is the highest.It can be seen that in winter,the wind turbine is more suitable for use.According to the statistics of wind speed ? 2m / s and wind speed ? 2.5m/s,the wind resources in this area are relatively small,which may also be related to the installation location of wind turbine and wind speed measuring device,resulting in the measurement data is relatively small.(2)According to the statistics of 128 day photovoltaic power generation,from the power generation of these four months,it can be seen that the power generation is gradually decreasing with the reduction of sunshine radiation and the shortening of sunshine time.In this experiment,through the statistics of six typical weather,i.e.sunny,rainy,cloudy,haze and snowy days,we can see that photovoltaic power generation is the best in sunny days,and the worst in haze days.Therefore,the light intensity has a certain impact on photovoltaic power generation.(3)According to the 128-day power generation statistics of wind turbines and photovoltaic panels,it can be seen that in late summer and early autumn,the main power generation equipment is photovoltaic panels.With the passage of time,the power generation of wind turbines gradually increases and that of photovoltaic panels decreases gradually,which verifies that the wind-solar complementary power generation system is complementary in season and time.The user load can be powered according to this characteristic.(4)According to the battery voltage statistics and wind power generation capacity statistics of photovoltaic panels and horizontal axis wind turbine power generation system,it can be seen that the battery voltage is mainly affected by photovoltaic power generation.Due to the low wind power generation,the battery voltage of vertical axis wind turbine generation system has little influence,so the battery voltage is relatively stable(6)According to the 24-hour power consumption of independent system users,corresponding wind turbines and photovoltaic panels shall be matched.