With the development of science and technology, developed countries have begun to systematically promote urban photovoltaic grid-connected power generation, mainly building residential roof photovoltaic power generation system and MW centralized large-scale grid-connected power generation system. In the field of transportation and urban lighting, to promote the use of solar photovoltaic systems.
The scale and application forms of photovoltaic systems vary. For example, the system scale is relatively large, ranging from 0.3-2W solar courtyard lights to MW solar photovoltaic power stations, such as 3.75kwp family roof power generation equipment and Dunhuang 10MW project. It can be widely used in home, transportation, communication, aerospace and other fields. Although photovoltaic systems vary in size, their composition and operating principles are basically the same.
Solar photovoltaic power generation system has the following characteristics:
No rotating parts, no noise;
No pollution of the air, no discharge of waste water;
No combustion process, no fuel;
Simple maintenance, low maintenance cost;
Operational reliability and stability;
The long life of solar cells is the key component of solar cells. The life of crystalline silicon solar cells can reach more than 25 years.
It is easy to scale up electricity generation as needed.