On the evening of August 19, the official Weibo of "Industry and Information Technology Weibao" broke news that the Ministry of Industry and Information Technology, the Ministry of Social Work of the Central Committee, the National Development and Reform Commission, the State-owned Assets Supervision and Administration Commission of the State Council, the State Administration for Market Regulation, and the National Energy Administration jointly held a symposium on the photovoltaic industry on the same day to further standardize the competition order of the photovoltaic industry. According to the official statement of the official Weibo of "Industry and Information Technology Weibo" on the evening of the 19th, the heads of relevant photovoltaic manufacturing enterprises and power generation enterprises, the China Photovoltaic Industry Association, and relevant local industry and information technology departments attended the meeting. Different from the caliber of the "Industry and Information Technology WeChat" symposium on July 3, the official release…
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1. Core equipment testing is the foundation, photovoltaic modules need to be visually inspected for cracks, hidden cracks (EL test), occlusion and hot spots (infrared thermal imager), and open circuit voltage and power attenuation are measured; The inverter monitors input and output parameters, temperature and fault alarms, and tests the conversion efficiency and harmonics. The combiner box checks the overheating of the fuse and wiring, and tests the lightning protection module. 2. Electrical system testing covers distribution cabinet wiring, three-phase balance, cable insulation resistance and laying conditions; The grounding system measures the grounding resistance (≤4Ω) and checks the connection reliability. Lightning protection facilities test the operation performance of lightning rods, down conductors and lightning protectors. 3. Performance and environmental monitoring The power generation is counted through the SCADA system, and the loss is analyzed compared with the theoretical value. Monitor irradiance, ambient and component temperature, and wind speed to optimize…
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Treasures of the photovoltaic industry, today we must give you a super powerful portable IV curve tester developed by Shandong Baifeng Technology Whether it is photovoltaic power station inspection or photovoltaic module production inspection, it can show its skills! Lightweight and portable, it can measure wherever it goes This tester is lightweight in design and compact and lightweight. Imagine carrying it on your back in a large array of photovoltaic modules, without feeling strenuous, and easily reaching various inspection points ✅ Whether it is a large-scale ground-based photovoltaic power station or the roof of a distributed photovoltaic system, you can carry out testing work anytime and anywhere, and the efficiency is directly full! Easy to operate, one-click start, super worry-free The operation interface is simple and intuitive, even if you are a novice in photovoltaic testing, you can understand it in seconds at a glance. The one-click fast test function…
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Items during on-site inspection of photovoltaic power station operation and maintenance and technicians include: infrared camera (hot spot inspection), stain occlusion loss, photovoltaic module performance degradation, photovoltaic cluster string temperature rise loss, photovoltaic module/string series and parallel mismatch loss, EL test, photovoltaic array mutual occlusion loss, DC line loss, inverter efficiency, inverter MPPT efficiency, transformer efficiency, AC line loss, photovoltaic array insulation test, grounding continuity test, grid connection performance test (grid connection point power quality, island protection, active/ reactive power control ability, low voltage ride-through and voltage/frequency adaptability verification) and other test contents. In the test project of the photovoltaic power station using string inverters, it should be determined according to the actual situation.1. Infrared (IR) scanning inspection of photovoltaic modules (full inspection using drones)(1) When the photovoltaic operation and maintenance personnel scan the photovoltaic modules by infrared scanning, the photovoltaic array should be in normal working condition during detection,…
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Photovoltaic roof inspection is an important part of ensuring the safe operation of photovoltaic systems, and its main purpose is to evaluate whether the roof structure can withstand the weight and load of the photovoltaic system, and to check the installation quality and electrical safety of the photovoltaic system. Here are the general steps for photovoltaic roof inspection: Roof structure inspection: First, conduct a comprehensive inspection of the roof structure to ensure that it can withstand the weight of the photovoltaic modules and maintain good integrity. This includes checking the roof's material, structure type, load-bearing capacity, etc. At the same time, special attention should be paid to the waterproof, thermal insulation and other properties of the roof to ensure that it can still maintain good functionality after carrying the photovoltaic system. Photovoltaic module installation inspection: Check the installation of photovoltaic modules, including module positioning, angle, bracket firmness, etc. Ensure that…
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Photovoltaic power stations, also known as solar photovoltaic power stations, refer to photovoltaic power generation systems that are connected to the grid and transmit electricity to the grid. Photovoltaic power plants have become an important source of electricity supply worldwide, and regular testing cannot be ignored to ensure their efficient and safe operation. Photovoltaic power station testing project content The testing content of photovoltaic power plants involves multiple aspects, which need to be evaluated and tested through professional testing equipment and testing technology to ensure the normal operation and safety of the power station. The main items of photovoltaic power station testing and acceptance are as follows: 1. Document verification: basic information of the project; basic documents; contract compliance of power station equipment; 2. Construction quality verification: verification of actual installed capacity; photovoltaic module inspection; Combiner box inspection; AC and DC distribution cabinets, box transformer inspection; photovoltaic bracket/photovoltaic array field/inverter…
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At present, the global energy transition has entered deep waters, and China's photovoltaic industry is experiencing a key turning point from "scale expansion" to "quality leap". On July 28, a symposium of responsible comrades of the national industry and information technology authorities was held in Beijing to summarize the work in the first half of the year, analyze the current situation, and deploy key tasks in the next stage. The meeting made it clear that in the second half of the year, it will highlight "strong bones", value creation, security and industry governance, and focus on eight aspects, including expanding domestic demand, strengthening the high-quality development of key industrial chains, making greater efforts to promote the integrated development of scientific and technological innovation and industrial innovation, deepening the empowerment and application of digital technology, and improving the level of industrial energy efficiency and green development. Among them, it is mentioned…
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On August 19, the Ministry of Industry and Information Technology jointly held a symposium on the photovoltaic industry to regulate the competitive order, promote the withdrawal of backward production capacity, and improve the price monitoring and product pricing mechanism. This action is only 46 days after the first industry symposium in early July, and the intensive coordination of the six ministries and commissions and the rapid implementation of policies highlight the determination of the decision-making level to eradicate the competitive pattern of the industry. Looking back at the first half of this year, with the implementation of the newly revised Anti-Unfair Competition Law and the Central Financial and Economic Commission's sword against "low-price disorderly competition", the photovoltaic industry has finally ushered in a key turning point from "price fighting" to "value reconstruction". In this reshaping of the industrial order, Tongwei Co., Ltd., the industry leader that holds 30% of the…
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On August 19, the Ministry of Industry and Information Technology, the Central Ministry of Social Work, the National Development and Reform Commission, the State-owned Assets Supervision and Administration Commission of the State Council, the State Administration for Market Regulation, and the National Energy Administration jointly held a symposium on the photovoltaic industry. The meeting clearly pointed out that all parties in the photovoltaic industry must deeply understand the importance of standardizing the competitive order to achieve high-quality development, and jointly promote the industry from scale expansion to quality improvement, from price war to technology and service competition. Since the second half of 2023, the photovoltaic industry has encountered severe challenges such as continuous price declines and general declines in corporate efficiency. The price of modules once fell below 0.6 yuan/W, and the disorderly price war and homogeneous competition intensified, seriously distorting the market mechanism and hindering industrial upgrading. In this…
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The rushing Yellow River, after writing a big "few" word on the land of China, flows all the way east to the sea. On the northern edge of the Ordos Plateau on the south bank of the "Few Character Bends", there is the Kubuqi Desert, the seventh largest desert in China, known as the "Sea of Death". In the sand sea of "yellow sand covers the sky and the sun, birds have no trees", bright blue photovoltaic panels are connected together, and an endless "Great Wall of Photovoltaics" is being built on the northern edge of the desert, becoming a solid barrier for local ecological governance and economic development. The overall project started construction in December 2022, and has completed the first and second phases of the grid-connected power generation pilot project of 1 million kilowatts each, and 63,000 acres of desert are dressed in photovoltaic blue. Na Guiting, vice…
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