What is the classification of the household solar pv power generation system?

Photovoltaic system definition: household photovoltaic power generation system is the use of solar cell components, and other auxiliary equipment system of converting solar energy into electrical energy. Normally we pv systems can be divided into independent system, interconnection system and mixed system. If according to the solar energy light

the definition of photovoltaic system: the household solar pv power generation system is the use of solar energy battery components and other auxiliary equipment system converts solar energy into electrical energy. Usually we pv systems can be divided into independent system, interconnection system and mixed system. According to the application of solar pv system form, scale and type of load. Photovoltaic (pv) system can be divided into the following six types: small solar power supply system; A simple DC system; Large-scale solar power supply system; Ac and DC power supply system; ； Grid system; Hybrid power supply system; Parallel hybrid system. The following describe the working principle and features of each system. High and low voltage generator 1. SmallDC characteristics of this system is only DC load, load power is low, simple structure, easy to operate. Its main use is general household system, all kinds of civil DC products and related entertainment equipment. For example, this type of photovoltaic (pv) system has been widely used in the western region in China. Load is DC lamp, used to solve the problems of domestic lighting without electricity. 2. Simple dc system characteristics of the system is to load in the system for dc load, the use of load time no special requirements, load is mainly used during the day, so the system does not use the battery or controller, the system structure is simple, direct use of pv module to the load power supply, to save the battery energy storage and release process, and the energy loss in the controller, to improve the efficiency of energy utilization. 3. Large-scale solar power supply system ( LargeDC) Compared with the above two kinds of photovoltaic system, the photovoltaic system is suitable for DC power supply system. However, this kind of solar photovoltaic system usually has a large load power. In order to ensure that reliable and stable power supply to load, the size of its corresponding system is very large. It needs to be equipped with a larger pv module array and a bigger battery. Its common application forms including communications, telemetry, monitoring equipment, power supply, centralized power supply in rural areas, the beacon tower, street lamps, etc. 4. Ac and DC power supply system ( Ac/DC) Different from the above three kinds of solar photovoltaic system, the photovoltaic system can also power supply for DC and ac load, and on the system structure more than the above three systems inverter, converts DC to ac, to meet the needs of the ac load. Usually, the system load power consumption also relatively large, so the size of the system is also relatively large. It has been applied in some communication base stations with ac and DC load as well as the other with ac and DC load of photovoltaic power station. 5. Grid system is the main characteristic of this kind of solar photovoltaic system is photovoltaic array produced by direct current (dc) through the grid inverter converted to meet the requirements of the commercial power grid alternating current (ac), and then the grid connected directly to the business. In a grid system, in addition to the ac load, photovoltaic array still feedback to the electricity grid. The system needs a dedicated grid inverter to ensure that the power output to meet the requirements of the indexes of power grid frequency and voltage.