Today, with the explosive growth of distributed photovoltaic, photovoltaic power stations have long been well-known, but there are many brands in the market, and the product quality is uneven. What are the misunderstandings that often exist in the selection? Let's see how much you won?
Misunderstanding one: the bigger the installed capacity, the better
Reasons: orientation, inclination angle, spacing, load
Assembly orientation: The ideal installation azimuth is due south. Not south, the power generation will be greatly affected, so not all around the roof is suitable for installing photovoltaic power stations.
Component inclination: The optimal inclination of the system is approximately the local latitudinal Angle or, depending on the roof structure, the components are laid parallel to the roof slope and the inclination can be measured using an Angle gauge.
Space between front and back of the module: The space should ensure that the solar cell array is not blocked from 9 am to 3 or 4 PM on winter solstice. So if you want high power, you have to control the spacing.
Load: the bearing capacity of the building is limited, can not blindly pursue too many components layout lead to overload, otherwise prone to safety risks.
Myth 2: The lower the unit price, the better
Reason: Value determines price, and supply and demand affect price
Photovoltaic power station long-term outdoor use, not only to withstand wind and rain (snow), but also to daily exposure. These day-to-day tests are directly related to the efficiency of photovoltaic plants, and even more directly affect the return on investment of consumers.
The following are some of the low-priced PV products commonly found in the PV market:
Photovoltaic modules are low-conversion and low-quality modules
Insufficient support thickness and galvanized thickness lead to rust
The cement pier does not bear enough weight.
Parts are easy to rust
Cable problem: cable is also an important part of the photovoltaic power station, equivalent to the human body of various sizes of blood vessels. Once unqualified or inferior cables are used, no matter how good the component inverter is, the electricity generated cannot be efficiently transmitted out, and the power generation efficiency of the whole power station will be greatly reduced.
Therefore, it is not the lower the unit price of 6mm dc solar cable, the better. Consumers should shop around when purchasing. Comprehensive consideration should be given to the quality of the power station in addition to the price. After all, only a good power station can guarantee your income.
Myth 3: The power station is installed and it is not needed
If you want your own photovoltaic power station to generate electricity efficiently, daily operation and maintenance are indispensable.