In the face of such a huge household photovoltaic market, while developing photovoltaic power plants, how can we prolong the life of photovoltaic equipment and reduce the cost of photovoltaic power generation?
For photovoltaic power plants to have a "longevity", they need to master three major skills: hardware + software + daily operation and maintenance
Tip 1: Hardware
We know that the design life cycle of current photovoltaic power plants is generally 25 years, which is mainly affected by the life of brackets, components and inverters. Concrete is used for the production of the bracket, which can not only prolong its life by more than double, but also reduce the material cost; and for the module, the silicon wafer and battery process factors in the module affect the life of the module. Regarding the inverter, because it is mainly composed of electronic devices, the life of the device is also very long. Therefore, it is only necessary to break through the relevant manufacturing methods and technologies to achieve the purpose of extending the life of the inverter.
Tip 2: Software
As mentioned above, the method of prolonging the life of photovoltaic power station is mainly from the manufacturing method and technology of hardware. So, what needs to be improved on the software side?
We know that photovoltaic power plants are generally built on rooftops or in remote areas, and it is not very convenient to view them on site. And the photovoltaic power station is composed of components, combiner boxes, centralized inverters, box transformers, string inverters, AC combiner boxes, transformers, power distribution cabinets and other equipment. The equipment comes from different manufacturers. Once the equipment fails, it is not conducive to troubleshooting. , the traditional manual inspection method is time-consuming and labor-intensive, and the efficiency is low.
The use of distributed photovoltaic monitoring system, all-round scanning monitoring without dead angle, greatly improves the overall operation and maintenance services of the power station, and can delay the aging rate of the power station.
Tip 3: Daily maintenance
A photovoltaic power station is like a human body. No matter how strong the body is, it should be maintained at ordinary times. To ensure optimal component performance, the following maintenance measures are recommended:
Appearance Observation Please check the components carefully for appearance defects. Focus on the following points:
1. Whether the component glass is damaged;
2. Whether there is a sharp object touching the surface of the component;
3. Whether the components are blocked by obstacles or foreign objects;
4. Whether there is corrosion near the grid line of the battery (this corrosion is caused by the damage of the packaging material on the surface of the module during installation or transportation, resulting in the penetration of water vapor into the module);
5. Observe whether there are burn-through traces on the backplane of the module;
6. Check whether the fixing screws between the component and the bracket are loose or damaged, and adjust or repair them in time.
The cleaning of the clean solar power system should pay attention to the following points:
1. The accumulation of dust or dirt on the surface of the components will reduce the output of power generation, and regular cleaning work should be carried out once a year as much as possible (the specific interval depends on the conditions of the installation site). Use a soft cloth, dry or damp, for cleaning. It is not recommended to use mineral water for cleaning, so as not to leave dirt on the glass surface;
2. Under no circumstances shall materials with rough surfaces be used for component cleaning;
3. In order to reduce potential electric shock or burns, it is recommended to clean photovoltaic modules in the morning or evening when the light is not strong and the module temperature is low, especially for areas with high temperature;
4. Do not try to clean up photovoltaic modules with broken glass or exposed wires, which will risk electric shock.
preventive maintenance
1. Inspection of connectors and cables, it is recommended to carry out the following preventive maintenance every six months:
2. Check the sealant of the junction box to make sure there are no cracks or gaps;
3. Check the aging signs of photovoltaic modules. Including possible rodent damage, weathering, and whether all connectors are tight and corroded. Check that the components are well grounded.