1. Does photovoltaic power generation have radiation and pollution?
Answer: Electric power experts said: "At present, photovoltaic power generation has no radiation and pollution from the operation point of view. However, there will be problems with batteries and noise. Electronic equipment will have noise during operation, but it is within a controllable range. Batteries are similar to mobile phones and cameras. Batteries, etc. have a small dose of radiation, but it will not be a big problem." Whether there is radiation in the recycling of photovoltaic panels mainly depends on their materials. If it is crystalline silicon solar cell recycling, there are not many sources of pollution. Similarly, amorphous silicon photovoltaic solar energy products mainly depend on the choice of materials. "Some inert materials are better and less toxic."
2. Will the power be insufficient when it is cold in winter?
Answer: The power generation of the photovoltaic system is indeed affected by temperature. The factors that directly affect the power generation are the radiation intensity and sunshine duration, as well as the working temperature of the solar cell assembly. In winter, the radiation intensity will inevitably be weak, the daily duration will be short, and the general power generation will be less than in summer, which is a normal phenomenon. The distributed photovoltaic system is connected to the grid. As long as there is electricity in the grid, there will be no shortage of power and power outages for household loads.
3. What is the application scope and installation method of distributed photovoltaic power generation system?
Answer: The distributed photovoltaic power generation system can be installed in any place with sunlight, including the ground, the top of the building, the side facade, the balcony, etc. The top of carports and bus stop signs are the most widely used; there are three types of installation methods: concrete, color steel plate and tile type.
4. How to consider the impact of loads on photovoltaic arrays and buildings when installing a distributed photovoltaic system?
Answer: From the perspective of safety and stability, the impact of permanent load, wind load, snow load, and temperature load on photovoltaic arrays and buildings needs to be considered in the design to ensure photovoltaic modules. The bracket and the phalanx foundation have sufficient strength and rigidity to resist the local extreme climate. Before the distributed system is installed, the load capacity of the building should be surveyed, calculated and checked, and a reasonable installation and construction plan should be designed on the premise that the building can meet the load.
5. If there is continuous rain or haze after installation, will the photovoltaic power generation system still work? Will there be insufficient power or power failure?
Answer: Photovoltaic cell modules can also generate electricity under certain conditions, but due to continuous rain or haze weather, the solar irradiance is low, and if the working voltage of the photovoltaic system cannot reach the starting voltage of the inverter, the system will just won't work. The grid-connected distributed photovoltaic power generation system operates in parallel with the distribution network. When the photovoltaic system cannot meet the load demand or does not work due to cloudy days, the electricity from the grid will be automatically replenished, and there is no problem of insufficient power and power outages.
6. What are the benefits of installing photovoltaic power generation systems for industrial and commercial users?
Answer: The benefits of installing photovoltaic power generation systems for industrial and commercial users are: large industrial and commercial power consumption, high electricity prices, large proportion of self-generated and self-consumption, short payback period, and high yield; in addition, photovoltaic systems have social benefits of energy saving and emission reduction, which can help industrial users to complete Energy saving and emission reduction indicators, especially in pilot cities that carry out low-carbon trading.
7. Is there any noise hazard in the photovoltaic power generation system?
Answer: Photovoltaic power generation system converts solar energy into electrical energy without noise impact. The noise index of the inverter is not higher than 65 decibels, and there will be no noise impact.
8. Will the shade of houses, leaves or even bird droppings on the photovoltaic modules affect the power generation system?
Answer: The shadow of the house on the photovoltaic module, the shading of leaves and even bird droppings will have a relatively large impact on the power generation system. The electrical characteristics of the solar cells used in each module are basically the same, otherwise the so-called hot spot effect will occur on the cells with poor electrical performance or shaded. A shaded solar cell module in a series branch will be used as a load to consume the energy generated by other illuminated solar cell modules, and the shaded solar cell module will heat up at this time, which is the hot spot phenomenon, which is serious damage to the solar cell module. In order to avoid the hot spot of the series branch, it is necessary to install a bypass diode on the PV module. In order to prevent the hot spot of the parallel circuit, it is necessary to install a DC fuse on each PV string. Even if there is no hot spot effect, the solar cell The shading will also affect the power generation.