How to do a good job of PV power plant in high temperature, heavy rain, lightning and other weather protection, to ensure that the power plant revenue will not be affected? What you want to know, read this one is enough!
What is the Impact of High Temperature Weather on PV Modules?
1. PV Modules are very afraid of heat!
The technical specifications of each PV module will have a parameter: peak power temperature coefficient!
Generally, the peak power temperature coefficient of PV module is between -0.38~-0.44%/℃.
Therefore, as the temperature rises, the output power of the PV module will decrease.
2. High Temperature will directly affect the life of the inverter
The inverter is full of electronic components, which generate heat when working.
Elevated temperatures have a great impact on the performance of the main components of the inverter.
If the temperature is too high, the inverter will stop working.
Therefore, in order to prevent the inverter from shutting down due to high temperature, the inverter must be placed in a cool place and protected from direct sunlight.
If you do not have a shady place to install the inverter, you should build a small pergola.
So, How to Care for PV Modules in Hot Weather?
Maintain Ventilation:
Whether it's modules or inverters, distribution boxes and other equipment, keep the air circulating.
Do not unreasonably increase the number of PV module settings in order to enhance power generation, resulting in mutual shading between components and affecting ventilation and heat dissipation.
When designing the power plant, you should choose a reliable service provider to design the most reasonable program based on the field conditions of the roof combined with power generation considerations.
Avoid the Accumulation of Debris:
It is necessary to ensure that equipment such as PV modules, inverters, distribution boxes, etc. are open and free of debris to avoid affecting the heat dissipation of the power plant.
If there are debris piled up next to the equipment that cause obstruction or pressure on the power plant, it must be removed in a timely manner.
Appropriate Cooling:
In hot weather, solar inverters and distribution boxes are best installed in a place sheltered from the sun and rain.
If the field environment is open without shade, it is best to install a canopy for them to avoid direct sunlight, making the equipment temperature too high, affecting power generation and equipment life.
If necessary, the equipment can be added to the cooling fan.
How to Maintain Your Own PV Power Station in Summer?
First, clean up the debris around the PV panels, maintain ventilation, reasonable heat dissipation to ensure power generation;
The second is to protect the inverter and distribution box, it is best to install it in the sun and rain sheltered place.
If open air, to do a simple awning to avoid direct sunlight;
Third, regular cleaning and maintenance, power plant operation and maintenance can not be sloppy, summer weather changes, to ensure that the photovoltaic panels do not accumulate dust and rain in order to send more electricity!
What Should I Do If I Encounter Severe Thunderstorms?
Summer thunderstorms, so the installation of photovoltaic power station partners to prevent these unexpected disasters must also pay attention to.
Lightning strike:
If you want to prevent lightning, the most effective and widely used method is to connect the metal parts of electrical equipment with the earth.
The connection part with electric welding or gas welding, can not use tin welding!
If the site can not be welded, can be riveted or bolted, to ensure that the contact surface of more than 10cm2, grounding body buried depth is best in 0.5 ~ 0.8m above.
Remember that the backfill must be compacted Oh.
Storm:
If the roof of your house is a pitched roof, there is absolutely nothing to worry about.
If your home is a flat roof, it is best to consider the drainage problem when designing and installing the photovoltaic power plant.
Avoid when the rain is too heavy, because the flat roof of the bracket installation is relatively low, resulting in PV modules are soaked by rainwater.
When inspecting after rain, be sure not to touch the inverter, PV modules and the connection part of the power supply cable directly with your hands.
To bring rubber gloves and rubber boots, etc. Oh.
Hail:
Qualified PV power station products purchased from reliable large manufacturers, PV modules are tested by hailstones hitting at a speed of 23m/s, so generally hailstones will not affect PV modules.
However, after the hailstorm, the daily inspection is also indispensable.
If after the hailstorm, the PV power station has a significant drop in power generation or other abnormalities.
The owner must promptly notify the manufacturer's after-sales personnel for testing.
Do I Need to Disconnect the PV Power Generation System in Summer Thunderstorms?
Generally no, distributed PV power generation systems are equipped with lightning protection devices.
In case of strong thunderstorms, you may choose to disconnect the circuit breaker switch of the convergence box for safety reasons.
Cut off the circuit connection with the PV module to avoid the harm caused by direct lightning which cannot be removed by the lightning protection module.
Why are there many Benefits of installing PV power plants in summer?
First, the summer sunshine conditions are good, the PV power station power generation and income will also be increased;
Secondly, families use a lot of electricity in the summer, installing PV power plants can use PV power during the day, saving electricity expenses;
Third, the roof PV has a heat insulation effect, the installation of indoor temperature can be reduced by 3 to 5 degrees ranging, but also will reduce air conditioning energy consumption.
Master these small knowledge, guarding the power station peacefully and steadily in the summer.
In the hot and changeable weather, photovoltaic power plant can bring stable income, but also for the house to send a cool.
It can also increase the proportion of clean energy in the power supply, ease the pressure of social electricity consumption, and contribute to national energy conservation and emission reduction.
