A few days ago, two mandatory national standards for photovoltaic were officially issued, and the industry was given a one-year transition period. But the weather won't wait. According to
the Blue Book on Climate Change in China, typhoon weather above grade 14 in China has been increasing at an average annual frequency of about 20% since 1990, and the number of hail days has also been on the rise. The statistics of Gcube, a global new energy insurance company, are more direct: hail, fire and mechanical load failure have accounted for more than 90% of the total component claims.
When the bad weather gradually changes from "small probability" to "new normal" and "reaching the standard" is not enough to hand in the papers, Longji Green can choose to take the initiative to add "super-outline questions".
Baoxue: An anti-dust certificate responds to fire safety
. The most direct impact of dust on components is the loss of power generation. Zhu Qifeng, general manager of intelligent energy operation of T TÜV South Deutsche Group, reminds us of a more hidden risk: hot spots and fires.
"Dust prevention first pursues efficiency, but if the dust can not be removed in time, rainwater can not be washed clean, local hot spots may cause fire." Zhu Qifeng pointed out that the essence of anti-fouling performance is to reduce the risk of product failure, thereby improving long-term reliability. Longji Baoxue components were awarded the "Comprehensive Assessment Certificate of Dust Prevention" by T TÜV Nande. This certification is not a simple surface cleanliness test, but simulates the self-cleaning ability and hot spot control level of components in real dust accumulation environment. The anti-dust design of Longji Bathing Snow Component is aimed at this real scene-it is not to make the component "cleaner", but to keep the component running safely in a real dirty environment.
Haiguang: After passing the exam, it is a hot topic in the industry in the past two years to take the initiative to ask for an additional test
of offshore photovoltaic. However, the high humidity, high salt, wave fluctuation and bird droppings corrosion in the marine environment make the traditional test standards appear to be stretched. Yang Shulong, technical specialist of solar energy services in Greater China, introduced that in 2024, Rhine established internal standards for offshore photovoltaics, adding stricter salt water immersion, PID testing, high temperature, high humidity and corrosion sequence testing in addition to conventional static-load, dynamic-load and environmental testing. This is an "additional question" in itself. The Longji Haiguang module not only passed the Rhine Haiguang standard test at one time, but also took the initiative to request an additional "stricter version" test: "comprehensive aging-salt spray-comprehensive aging-salt spray" cycle enhancement test, and the results were excellent.
At the SNEC site, Longji Haiguang Components obtained the "Haiguang Components Certificate" and "Marine Environment Strict Test and Assessment Report" issued by T TÜV Rhine, which fully proved the safety and reliability of Longji Haiguang Components.
Limit dynamic load: 50,000 times, the limit
mechanical load has not yet been found, which is another underestimated risk. In his speech, Wang Gaosheng, an expert on the quality of Longji Green Energy, demonstrated the distribution of wind areas in China: high latitude and high wind speed in Karamay, Xinjiang, and low latitude and high wind speed in Zhoushan, Zhejiang. Different landforms have different stress requirements for components. Routine 1000 dynamic load tests can only cover about 30% -40% of the use environment. In the test of T TÜV Rhine, the number of dynamic loads of Longji BC components has exceeded 50,000 times, and the limit has not yet been found.
Yang Shulong explained that this is due to the BC technology, which places the connection between the chips on the back of the battery, reducing the front stress from the source. At the same time, with the unique design of the frame, the flexibility is enhanced, so that the components show stronger resistance under continuous mechanical stress. "At present, the performance of more than 1500 Pa and 50000 times is very good."
In the context of extreme weather such as typhoon "Du Suri" and "Capricorn" causing damage to a large number of power plants, the significance of this set of data lies not only in the laboratory figures, but also in the asset safety corresponding to the real wind area.
Back to the first set of data: the frequency of typhoons above level 14 increases by 20% annually, and the number of hail days continues to rise, while the current standard still stays at the mild assumption of 25mm hail. As Zhu Qifeng said, "The past standard tests are relatively exemplary and standardized, but with the change of specific application scenarios, it is necessary to carry out targeted and scenario-based simulation tests on specific product design and material selection, so as to be closer to reality."
Bathing snow, sea light, extreme dynamic load-the choice of these three "super-class tests" is not to get more certificates, but to correspond to three real risk scenarios: hot spots of ash accumulation in Shago scenarios, high salt and humidity of offshore photovoltaic, and continuous mechanical stress in windy areas. Preparing for a
rainy day is the best quality insurance for extreme weather. Longji chose to add these super-class tests, not to cross the industry's passing line, but to lock in a certainty in advance for the safety and income of customer power plant assets in a longer time dimension.
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