As for the orientation of the component, it must be towards the south, and preferably at a certain angle;
Pay attention to the occlusion, which must be sufficiently clear;< /p>
The same matrix module requires similar current, otherwise the power generation efficiency of the module will be affected after being connected in series;
In humid areas, the modules are likely to cause PID phenomena and the negative pole mainly appears, which will cause the power of the module to gradually decrease. This will affect the entire matrix power generation effect (please ignore domestic systems, which mainly occur in large ground-mounted power plants);
Photovoltaic power plants cannot be built near waterways and airports, as the light reflected from the panels will affect the takeoff and landing of aircraft.
If it is ane distributed power plant, not all roofs are suitable for the installation of solar power plants. Some roofs are not load-bearing. It is recommended to carry out an on-site inspection first.
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Ten major dangers of photovoltaic panels
Causes of faults and operation of the inverter.
1. Cause of failure. If the voltage of one group is low, the component is shorted or grounded, the current from the other channel of the same MPPT may flow to that channel and a negative voltage will appear.
2. Inverter function. The inverter has a PID repair function and uses forward bias technology. It must take energy from the network and then rectify it, giving the components a reverse current and possibly a negative voltage.
1. The main transformer burns and explodes. The distance between oil-immersed main transformers does not meet the fire-proof and explosion-proof requirementsgrants. The oil-immersed power transformer in operation may be damaged due to insulation. aging, poor contact, overvoltage due to lightning, load short circuit. Many reasons such as transformer overheating and external fire sources lead to fire or explosion accidents. The fire separation distance between the two main transformers is insufficient or there is no firewall, which can easily spread. to each other and lead to chain explosions. 2. Hidden risks of damage from high wind: Steel bracket anchors and electrical equipment are seriously corroded. The PV panel bracket mounting tie bars are not tight and the bracket anchor bolts are not tightened. The windproof effect is limited. Steel does not meet requirements. The overall rigidity and stability of the module does notcannot be respected. It is indeed guaranteed that there is a risk of deformation of the support and damage to the components in strong wind conditions. 3. Hot spot effect There are a lot of bird droppings on the photovoltaic module panels and no bird repellents are installed in the array area, which may cause a "hot spot effect". Solar modules that are shaded in a series branch will do this. be used as a load to consume other useful The energy generated by the illuminated solar modules generates heat In severe cases, the hot spot effect can cause partial combustion of the battery, or even lead to the scrapping of the entire solar module or cause a major problem. fire. 4. Potential lightning hazards: PV module strings are not connected to each other and component grounding holes at both ends of the stringare not connected to the metal support. Since the aluminum frame of the module and the galvanized bracket are plated, only the bracket is grounded, which cannot meet the grounding requirements. 5. PID effect The photovoltaic modules adjacent to the seaside have been exposed to high temperature, high humidity and high saline and alkaline environments for a long time, which can easily induce the PID effect (PID effect). the potential of the module) of photovoltaic modules. The PID phenomenon is serious, the power of one module will be attenuated by more than 50%, thereby affecting the output power of the whole chain.