The advantages and disadvantages of grid-tied solar power systems
(1) Using clean, renewable natural solar energy to generate electricity, does not consume non-renewable, limited resources of carbon-bearing fossil energy, no greenhouse gas and pollutant emissions in use, harmonious with the ecological environment, in line with economic and social sustainability development strategy.
(2) The power generation can be fed into the power grid, and the power grid is used as the energy storage device to save the battery. The investment in the construction of the independent solar photovoltaic system can be reduced by 35% to 45%, thereby greatly reducing the power generation cost. Eliminating the battery avoids secondary contamination of the battery and increases the average time between failures of the system.
(3) The perfect combination of photovoltaic cell components and buildings can not only generate electricity but also be used as building materials and decorative materials, so that the full utilization of material resources can play various functions, which not only helps to reduce construction costs, but also increases the technological content of buildings. Increase the "selling point".
(4) Distributed construction, nearby local power distribution, flexible access to and exit from the power grid, not only to enhance the ability of the power system to withstand wars and disasters, but also to improve the load balance of the power system and reduce line losses.
(5) It can be used for peaking. The networked solar photovoltaic system is the hotspot and focus of the developed countries in the world in the field of photovoltaic applications. It is the mainstream development trend of the world's solar photovoltaic power generation, with huge market and broad prospects.
1. There are intermittent and random applications in the ground. The amount of power generation is related to climatic conditions. It cannot or rarely generates electricity at night or in rainy days.
2. The energy density is low. Under standard conditions, the intensity of solar radiation received on the ground is 1000W/M^2. When used in large size, it needs to occupy a large area;
3, the price is still relatively expensive, 3 to 15 times the conventional power generation, the initial investment is high.