The characteristics of solar photovoltaic independent power generation system is what?

China has a very rich solar energy resources. Solar energy resources with the sun's radiation, latitude and longitude, and cloud cover directly related. Solar energy resources with the change of time and place and produce change, every moment is not the same all year round. Because the sun incidence Angle

China has abundant solar energy resources. Solar energy resources is directly related to the sun radiation, the latitude and longitude, and cloud cover. Solar energy resources changes with the change of time and place, these changes have occurred in a year. Due to the sunlight incident Angle of tilt and reach the earth before need through the thick atmosphere, the higher the latitude, the more solar energy resources. Chinese in Tibet, qinghai, gansu and ningxia have the best solar resources ( See the map on the solar energy resources) 。 In these regions, the annual sunshine time of more than 2200 hours, it is valuable. Characteristics of solar photovoltaic power generation system structure is relatively simple. The solar cell module square array is used to recharge the battery pack. By the controller Then, battery power through the inverter into 220 v alternating current (ac), for the use of residents, community and production users. Sunshine can only be acquired in the daytime, sometimes affected by clouds and rain. Based on the natural attribute of solar battery energy storage is very important. Independent photovoltaic system improves the quality of people's lives, made it possible to small-scale electricity. However, solar photovoltaic independent power generation system can provide much less electricity than traditional grid. Therefore, although the system of power quality and the traditional grid ( 220 volts, ac, 50 hz), There is no difference between power quality, but users attempt to use high-power electrical appliances must be restricted. For small and medium-sized civil photovoltaic power generation systems, usually only to residents of family and community to provide power supply, to improve their quality of life, while allowing some limited production and application of low power consumption. Most of these systems are actually run at night. For a little bit big civilian system, power supply can work longer hours, but can only supply very small production load, such as refrigerators and freezers. High power electrical equipment, such as air conditioning, electric water heater, etc. Beyond the scope of solar photovoltaic power generation system. Solar photovoltaic cells components are very expensive, is one of the most important investment in the whole system. Input and replace the battery pack is the second largest investment. The subsequent operation and management cost is very low. According to the actual situation and the various factors, to determine the appropriate scale of system is the primary consideration. Solar photovoltaic independent power generation system generally consists of solar modules, solar charge controller, battery and inverter. The solar cell phalanx: solar cell phalanx must be modules in series and in parallel with the same characteristics to achieve the rated design and quantity. Installing a solar array, must according to the local geographic latitude to keep an Angle, so as to ensure a year to get the biggest solar power, or a quarter can obtain the biggest solar energy and Angle adjustment the seasons. Installation must ensure that the mold structure design and good connection between framework, and can withstand the strong winds of 28 meters per second. The design of the battery, battery capacity and determine the basic same with wind power system. However, solar energy can only be used during the day, and electricity is often used in the evening. Solar photovoltaic power generation systems must be stored for electricity during the day, in order to use in the evening.