Tianjin photovoltaic power generation roof equipme

2022-06-22
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Tianjin photovoltaic power generation roof equipment. Adhering to the business philosophy of promoting and popularizing the application of clean energy, by integrating various resources at home and abroad, we have successively launched a series of high-quality and innovative products, such as inclined roof support, adjustable angle roof support, flat roof support, ground support, column support, etc. It is mainly used in industrial plants, commercial buildings, residential roofs, agricultural facilities, remote areas, etc. Parallel photovoltaic power generation means that the direct current generated by solar modules is directly connected to the public power after being converted into AC that meets the requirements of the municipal power supply through the parallel inverter. It can be divided into parallel power generation systems with and without batteries. The parallel generation system with storage battery is schedulable, which can be connected to or disconnected from power as required. It also has the function of standby power supply, which can provide emergency power supply in case of power failure for some reason. Photovoltaic and power generation systems with batteries are often installed in residential buildings. The parallel generation system without battery does not have the functions of schedulability and standby power supply, and is generally installed on a larger system. Parallel photovoltaic power generation includes centralized large-scale parallel photovoltaic power stations, which are generally national power stations. The main feature is that the generated energy is directly transmitted to electricity, and the electricity is uniformly distributed to supply power to users. However, this kind of power station has large investment, long construction cycle and large floor area, and has not been greatly developed. Decentralized small-scale photovoltaic power generation, especially photovoltaic building integrated photovoltaic power generation, is the mainstream of photovoltaic power generation due to its advantages such as small investment, fast construction, small floor area and strong policy support

power structure: the meeting focused on the construction of coal-fired power. Enterprises and experts believe that the coal-fired power capacity of 220million kW put into operation in the 13th five year plan is too large, which will increase the excess capacity of coal-fired power. Effective measures should be taken to further strengthen the regulation of coal-fired power construction, optimize and delay the construction of some coal-fired power bases, and strictly control the capacity of coal-fired motor assembly machines in 2020 to be less than 1.1 billion. It is also pointed out that coal-fired power units should bear more power support and system peak load regulation in the future. In addition, the construction of distributed power supply and peak shaving gas power supply should be increased in the planning. Recently, the outflow of bidding documents for 2.75gw photovoltaic modules has caused the industry to cry out. The price of high-efficiency single crystal modules, the leader, fell below 3.2 yuan/watt, and the lowest price of ordinary modules was 3.05 yuan/watt

selection and use of photovoltaic support system

with the rapid development of green economy in China, monocrystalline/polycrystalline silicon photovoltaic power generation and thin film BIPV technology are becoming more and more mature. Compared with other structures, steel structure has great advantages in use function, design, construction and comprehensive cost. Therefore, it is of great significance to actively develop and produce new steel PV support system to replace the existing angle steel support system

light structural steel: light structural steel mainly refers to round steel, small angle steel and thin-walled section steel. Among them, when the angle steel is used as a supporting member, it can make better use of the strength of steel and facilitate the installation of the overall support. However, when it is used as a bending and compression member, the deformation is relatively large. At present, compared with the solar energy support, the national standard angle steel has few optional models, so more small angle steel models are needed to adapt to the current rapid development of the solar energy market. Purlin members of thin-walled section steel generally adopt wall thickness of 1 Mm thin-walled steel products with different cross-sections and sizes are made by cold bending or cold rolling

in the northwest of China, more and more photovoltaic power stations are being built. However, behind the "vigorous" construction of photovoltaic in Northwest China, a large amount of light energy has been "abandoned". In the face of this situation, the photovoltaic industry in Northwest China is starting a "defense war" of light energy to solve the dilemma of "abandoning light". Shi Limin, Executive Deputy Secretary General of the new energy chamber of Commerce of all China Federation of industry and commerce, said that in recent years, affected by economic transformation and other factors, the growth of China's electricity demand has slowed down, while the excess installed capacity of thermal power has become increasingly serious, and the phenomenon of occupying the consumption space of new energy has become increasingly prominent. In addition, PV is regarded as an unstable power supply due to its vulnerability to environmental impact, and some power enterprises are reluctant to access PV under this excuse. High durability: Based on the design concept of 20-year service life and 10-year quality assurance, all structural parts of Anyang PV support accessories are made of high-strength stainless steel and anodized aluminum alloy to ensure the high durability of the materials

compared with hot rolled section steel, under the same section area, the turning radius of thin-walled section steel can be increased by%, and the section moment of inertia and resistance moment can be increased by 0 Therefore, the strength of the material can be reasonably utilized. However, since the processing of thin-walled steel is mostly in the factory, high-precision drilling is required to match the screw hole behind the photovoltaic panel. Hot galvanizing and rust prevention can be carried out only after the drill buckle is processed in the factory; When transported to the site for installation, due to the small steel section, the tools are difficult to operate, and the construction is difficult. At present, most battery panels in China cannot be directly connected and installed with thin-walled steel, and other auxiliary fixed structures (such as pressing blocks) are required

ordinary structural steel: carbon structural steel or low-alloy steel with easy smelting and low cost is often used as ordinary structural steel. There are many types of cross sections. The commonly used PV sections mainly include I-shaped, H-shaped, L-shaped and various special sections required by design. There are also various processing methods. The welded section steel is made of steel plates with different thicknesses, and the formed steel is welded and processed in the factory according to the design requirements. This forming method can be calculated according to the stress of different structural parts of the photovoltaic project. The steel plates with different thicknesses are adopted at different parts, which is more reasonable than the hot-rolled one-time formed products. The instrument science and technology not only covers a wide range of disciplines, but also is suitable for on-site installation, It can also save steel

the sharp decline in module prices has worried the industry. People can not help but question whether the cost of photovoltaic power generation can catch up with the decline in module prices? What is more worrying is that affected by the rush for installation in the first half of the year, many large photovoltaic enterprises have announced to expand their production. Under the circumstances of difficult consumption and serious power curtailment, a new round of overcapacity seems unavoidable. For China's photovoltaic industry, 2016 is a year of opportunities and challenges. At the beginning of the year, opportunities outweighed challenges, so the whole photovoltaic industry made great progress. However, after the rush for installation in the first half of the year, the subsidy will be officially reduced, and the challenges facing the photovoltaic industry have exceeded the opportunities. Self evolution: intelligent enterprise transformation and upgrading. With the continuous accumulation of various original data and decision-making data, enterprises realize self-assessment, self correction, self-improvement and self guidance through the cognitive network of memory cognition, computing cognition and interactive cognition. Enterprises are gradually showing the characteristics of data-driven management and artificial intelligence

2. Requirements for steel performance of solar energy support the steel of solar energy steel structure shall have the following properties:

1) tensile strength and yield point. High yield point can reduce the section of small steel members, reduce the self weight of the structure, save steel and reduce the overall project cost. High tensile strength can increase the overall safety reserve of the structure and improve the reliability of the structure

2) plasticity, toughness and fatigue resistance. Good plasticity can make the structure produce large deformation before damage, so that people can find and take remedial measures in time. Good plasticity can also adjust the local peak stress. In order to adjust the angle, the solar panel itself is often installed by force, and the plastic property causes the internal force of the structure to redistribute, so that the stress of some original stress concentration parts in the structure or components tends to be uniform, and improves the overall bearing capacity of the structure. Good toughness can make the structure absorb more energy when it is damaged under the impact load of external forces, especially in desert power stations and rooftop power stations with large wind force. The wind vibration effect is obvious, and the toughness of steel can effectively reduce the risk. Better fatigue resistance can also make the structure have strong resistance to alternating repeated wind loads

since its establishment 16 years ago, the company has achieved a leap forward development from metal material tensile testing machine - scaffold tensile testing machine, from small to large. Its installed capacity and asset scale are close to the "double thousand" mark of 10 million kilowatts and 100 billion yuan. However, under the new normal of economic development, the power generation market has entered the "double reduction and double low" channel of reducing electricity price, reducing utilization hours, low power growth rate and low load rate. How to quickly predict and respond to external conditions under the changing market and policies is an urgent problem to be solved to improve the operating performance of enterprises. The construction of the smart Dadu River has accelerated the establishment and improvement of the management and control model of grass-roots units, built an internal driving mechanism, so that all units can spontaneously carry out rectification and improvement, and stimulate the endogenous power and vitality of improving quality and efficiency. Track comparison: design brand standard bolt track: it is used in conjunction with standard bolts. During installation, the manufacturing cost diamond block track is inserted from the beginning. Special shaped block track of six senses development course: aluminum alloy extruded profiles are used as blocks, and quotations can be inserted from any position of the track. Color steel plates are steel formed by cold pressing or cold rolling of thin steel plates

3) processability. Good machinability includes cold machinability, hot machinability and weldability. The steel used for photovoltaic steel structure shall not only be easy to be processed into various forms of structures and components, but also be free from excessive adverse effects on strength, plasticity, toughness and fatigue resistance due to processing

4) service life. Since the design service life of the solar photovoltaic system is more than 20 years, good corrosion resistance is also an important indicator to measure the quality of the support system. If the service life of the support is short, it will inevitably affect the stability of the whole structure, prolong the investment payback period and reduce the economic benefits of the whole project

5) under the above conditions, the steel for photovoltaic steel structure should be easy to purchase, produce and cheap

during the 12th Five Year Plan period, the State Power Corporation of China will invest more than 300billion yuan in AC UHV construction. In 2015, Sanhua AC UHV synchronous power with three vertical and three horizontal lines as the core will be formed, 38 UHV substations will be added, the variable capacity will be 260million KVA, and 26000 km of UHV AC lines will be built; 15 DC projects have been developed, with a total commutation capacity of 230million kW and a total length of 25000 km. In recent years, the rapid development of new energy power generation industry has brought better development space for power transformers, and has also become an important direction for power transformer manufacturers to seize the market segment and expand their business scope. At the same time, it also promotes the optimization of power transformer product structure and technological innovation. Arrangement and spacing of inspection standards for seismic requirements: in combination with local sunshine conditions, target quality requirements: no corrosion in 10 years, no reduction in rigidity in hn7azotdqxf8t in 20 years, and certain structural stability in 25 years

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