I. Pollution and Radiation in Photovoltaic Power Plants
Photovoltaic power plant consists of photovoltaic modules, photovoltaic inverters, photovoltaic mounts and photovoltaic cables, etc. The photovoltaic modules receive sunlight and generate direct current electricity, a process that does not produce pollution or any garbage.
The PV inverter converts the DC power into AC power to supply electricity to the user's home appliances, and the excess power can be fed into the grid. This process also does not have any pollution, to say that the radiation of the inverter, in fact, much smaller than the TV inside the home.
2、 the photovoltaic power plant installed on the roof will leakage of rain
Photovoltaic bracket installed on the roof to support the components, connected to the roof. It is designed to use more of the top of the top of the way, will not perforate the roof of the original waterproofing, damage; pressure block using prefabricated components, will not be poured on-site. This practice avoids the hard damage to the waterproof layer of the roof by solar racking installation.
And in some areas prone to rain leakage, the use of waterproofing membrane, resin, silicone mar-resistant adhesive, Union Ester coating, JS cement-based waterproofing coatings. Waterproofing treatment to follow the general principle is appropriate to guide rather than blocking, that is, to ensure that the node treatment can be smooth enough to let the water cascade off, in a small amount of water in heavy rain can not leak.
For flexible waterproofing roof structure roof, in the construction process will be on the roof waterproof layer of weak places to avoid, in each fixed base placed under the rubber mat way, all the rods connected to the bolted joints, the scene will not appear welding. Ensure that the roof will not leak because of the construction of photovoltaic power plants.
3、 the photovoltaic power plant will crush the roof?
In fact, this point is indeed very critical, if not handled properly, it may be the roof pressure bad, professional system design company in the design of the power plant will be in accordance with the "Building Structural Load Specification", fully taking into account the roof of the fixed load, wind pressure load, snow pressure load, seismic loads.
4、Is the photovoltaic power plant safe? Will there be fire and other hidden dangers?
From the point of view of operation and maintenance, distributed photovoltaic power generation is not completely safe without hidden danger. For example, I remember when I was a child in a thunderstorm, my parents always urged not to watch TV, unplug the wires for the same reason, the construction of photovoltaic power plants should also be good protective measures.
Here it is necessary to pay attention to these elements such as stents have higher than the photovoltaic panels, pick up lightning can be used directly on the stent, or in the stent to add a short lightning rod, the line with a metal trunking or wire pipe shielding, convergence box with a metal box and shell grounding, photovoltaic convergence bus with DC power lightning protection, inverter from the photovoltaic panels, such as the addition of the input side of the DC power lightning protector.
For security, the user needs to confirm whether the inverter manufacturer has the certificate of the national authority, clear inverter several important indicators, see whether the anti-islanding protection, overvoltage, overcurrent, over-temperature and leakage current protection, etc., only to understand these in order to effectively ensure the safety of the power station.
Summarize: With the continuous improvement of industry standards and norms, distributed photovoltaic power generation because of the quality of equipment, design and construction problems caused by the safety of hidden dangers is bound to become less and less. If we want to install photovoltaic power plant on the roof of the people, try to find a professional photovoltaic system design company, to prevent problems before they occur, only then you build a photovoltaic power plant will not appear security risks, will not encounter the phenomenon of leakage of rain crushing the roof, in order to obtain a stable income every day.
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