The development of technology has driven the progress of solar power generation, and solar power generation systems have entered our lives. Throughout the foreign solar photovoltaic power generation industry, it has become increasingly mature, and the domestic market is also hot. How far can solar energy go? Let's analyze its development prospects together.
1. Look at this issue from the perspective of an observer. From the perspective a few years ago that solar power generation may largely replace the dominant coal-fired power plants, to the current perspective that solar power generation has replaced coal-fired power generation. Firstly, global warming is caused by an increase in carbon dioxide. The characteristic of solar power generation is low-carbon and environmentally friendly, but the two are a suitable combination. Another reason is that the application of distributed solar power generation can effectively improve the quality of life of people in remote areas and solve the problem of transmission difficulties for the national power grid due to cost and technical reasons. People in remote areas use solar energy to solve their electricity problems.
2. There are bottlenecks in the development of household solar energy
There are two bottlenecks in the development of solar power generation:
1. The generated direct current can only be directly used for pure resistance electrical appliances such as lighting and heating; Household appliances such as refrigerators, washing machines, color televisions, air conditioners, etc. It needs to be converted into AC power through an inverter in order to use it, which will increase investment funds and operation and maintenance costs.
2. Household solar power generation can usually be installed on roofs and sunny walls, which requires unified design and planning. Some areas with poor lighting are restricted. Taking into account the above two factors, the use of solar power generation in rural cities is limited.
3. Current issues to be addressed
All technologies that can be widely applied are constantly changing and innovating. In order to be widely accepted and used, the following technical issues must be addressed:
1. Can the conversion efficiency of solar panels be significantly improved. For example, while ensuring cost reduction, the efficiency of large-scale usage conversion has been increased from around 18% to around 30%.
2. Solve the safety issues of the power supply network that can withstand the impact and oscillation of photovoltaic power generation in the large power grid. Otherwise, the large power grid cannot withstand the impact of a high proportion of solar photovoltaic power generation.
3. Significantly reduce the cost of solar power generation equipment, making the cost per kilowatt equivalent to or even lower than conventional thermal power generation. At present, the cost of conventional thermal power is around 5000 yuan per kilowatt, and the cost per kilowatt is around 10000 yuan. Meanwhile, the annual effective power generation time of conventional thermal power is over 6000 hours, while that of solar photovoltaic systems is only 2000 hours.
From the above analysis, it can be seen that in the long run, the future prospects of solar power generation are bright. If photovoltaic technology issues cannot be adapted and improved, it will become one of the limiting factors for the development of solar power generation.
