Summary of common household solar power generation problems

1. If the power grid is powered off, can PV still be used?
With the sun in the daytime, the photovoltaic system can generate electricity, and it doesn't matter if the power grid is cut off. It can't be used without the sun at night, unless there is a battery.
2. Will there be insufficient power in cold winter?
The direct impact on the power generation is the irradiation intensity, sunshine duration and the working temperature of the solar cell module. The radiation intensity will be weak in winter, the duration of sunshine will be short, and the power generation will be less than that in summer. The home photovoltaic system is generally connected to the power grid. As long as the power grid has power, there will be no power shortage and power failure.
3. How to clean PV modules?
Rainwater can be cleaned without special maintenance. If there is adhesive dirt, simply wipe it. In order to avoid electric shock injury and possible damage to the components caused by wiping the components under high temperature and strong light, it is recommended to clean the components in the morning or later in the afternoon. The components are load-bearing, but cannot be cleaned by stepping on them, which will cause hidden damage to the components and affect the service life of the components.
4. Will house shadows, leaves and dust affect the power generation system?
It will affect the power generation. If bird droppings from leaves are found, they need to be cleaned in time.
5. Can it resist typhoon and hail?
The system is designed according to local conditions. Wind pressure, accumulation and roof style will be considered, and can reach a certain level of wind and hail resistance.
6. In the scorching sun, do you need to replace the damaged parts immediately?
It cannot be replaced immediately. If the replacement is recommended to be carried out in the morning or later in the afternoon, the operation and maintenance personnel of the power station should be contacted in time, and the professional personnel should go to replace it.
7. Do I need to disconnect the photovoltaic power generation system in thunderstorm weather?
The home photovoltaic power generation system is equipped with lightning protection devices, so it is not necessary to disconnect. In order to ensure safety, it is recommended to disconnect the circuit breaker switch of the combiner box, cut off the circuit connection with the photovoltaic module, and avoid the hazards caused by direct lightning that cannot be removed by the lightning protection module. The operation and maintenance personnel should timely detect the performance of the lightning protection module to avoid the hazards caused by the failure of the lightning protection module.
8. Is there radiation on the battery panel?
Photovoltaic power generation system is to convert solar energy into electric energy without pollution, radiation and harm to human body.
9. How about the effect of power generation in rainy weather?
It can also generate electricity in rainy days, but the effect is not very good. If it is cloudy, the power generation is only about 20% of that in sunny days.
10. If various costs are considered, how much is the cost of electricity generation?
The cost of one kilowatt-hour electricity is 0.6 yuan to 1 yuan, which varies greatly according to the sunshine conditions in different regions, and the system capacity. The larger the system, the lower the cost.
11. If we add a solar tracker (automatically adjust the angle and direction of the battery panel), will it generate more power?
You can generate more electricity, but the cost is not proportional to the amount of electricity generated, and you need to increase the cost recovery period. In addition, the tracker belongs to mechanical equipment, and its reliability is not high, which will increase the cost.
12. Are there any restrictions? Is it difficult to install by yourself?
There are generally no conditions for home installation, so you need to fill in a form and apply at the power grid business hall. Installation requires professional knowledge. It is recommended to find a professional manufacturer for installation. The power grid has equipment qualification requirements, which may not be available to individuals.
13. Why hasn't home photovoltaic power generation been popularized?
Large-scale centralized power stations have always been under construction because they need large-scale ground, mostly in the sparsely populated western region. Distributed power stations such as household photovoltaic are currently being promoted for civilian use, and will also receive greater policy support in the future. Due to the problems of policy, process and early investment, the time in China is still short, the public acceptance is low, and the future development space is huge.