Along with Typhoon Maidem, the 10th typhoon this year, a delegation from
China Energy News came to Jiangshan City, Zhejiang Province. The largest
photovoltaic power station and efficient agricultural complementary project in
East China saw that the Fenglin photovoltaic agricultural project of Zhejiang
Tongjing Group was in full swing here. . This project is located in Fenglin
Town, Jiangshan County, Zhejiang. The first phase of the 30MW project has a
total investment of 250 million yuan and a total planned area of 833 acres. The
power station generates 40 million yuan annually and can reduce the use of
320,000 tons of standard coal during the life of the power station. It will be
It will be connected to the grid to generate electricity in mid-August.
East China is a region with peak electricity consumption. The average
annual solar radiation is 4190-5016MJ/㎡, and the average annual sunshine is only
1400-2200h. Land resources are very tight, so there have always been few
large-scale photovoltaic ground power stations in the south. As the only
large-scale photovoltaic power station in East China, the Tongjing Fenglin
photovoltaic power station project not only fills this gap, but also effectively
combines photovoltaic power stations with efficient agriculture, and the power
resources can be transported and consumed locally, which also makes Even before
the project is completed, it has received support from governments at all levels
and is favored by local farmers.
In an interview with China Energy News, Mr. Wu Jiannong, chairman of
Zhejiang Tongjing Technology Co., Ltd., could not hide his joy: he was imagining
that the dream of a perfect combination of intelligent photovoltaic power
stations and efficient agriculture would soon become a reality. Due to the
adoption of a comprehensive development model of smart photovoltaic power
stations and high-efficiency agriculture, solar power generation, modern
agriculture, and traditional Chinese medicinal material planting are combined,
and one land is used for multiple purposes, which increases agricultural income
and reduces power generation costs. It will play an active role in preventing
soil erosion and improving comprehensive land utilization efficiency.
effect.
Years of accumulation in the energy saving industry
Comply with the development needs of new energy photovoltaic
Tongjing Technology, formerly known as Sanyou Electronics, was the world's
largest energy-saving lamp manufacturer as early as 2002. After several years of
rapid development, in order to adapt to the company's innovation and development
needs, it took the initiative to transform three years ago and withdrew from the
lighting industry. March towards a sunrise industry such as solar energy
application and solar power station development.
Choosing the photovoltaic industry is not only based on our more than ten
years of management and market development advantages in the field of
energy-saving lighting, but more importantly, we have a mechatronics technical
team that is particularly capable of fighting, enduring hardship, and overcoming
difficulties. Wu Jiannong introduced. In the preliminary investigation and
research of choosing the photovoltaic industry, Tongjing Technology found that
solar power station tracking systems generally have problems such as
insufficient reliability, poor wind resistance, and large area of area, which
have been restricting the increase in power generation of solar power stations.
Tongjing Technology Science and Technology has put forward innovative
development goals for these three aspects, and at the same time adopted the
principle of cost control.
After long-term research, on the one hand, major improvements have been
made in the principle of the tracking system. A special soft connection is used
at one end of the battery array board to control it, which not only increases
the stability of the battery board, but also facilitates tracking and offset
rotation. This completely solves the problem of wind oscillation and the
longevity of the tracking system; on the other hand, the control system uses a
motor to drive the linkage of multiple battery array plates through universal
joint transmission, and can realize tracking linkage of up to 18 battery array
plate brackets. ; At the same time, it is also possible to use a 100-watt motor
and use the torque amplification effect of the rope, so that each battery array
plate only needs a small torque and makes gap motion to realize tracking of the
changes in the solar panel as the sun shines.
In this way, the overall use of equipment costs such as the number of
motors is reduced, the tracking power consumption is reduced, the control
software and the elimination of traditional expensive motors and reducers are
reduced. The cost of power station development is reduced from the source
compared with traditional oblique single-axis tracking systems. The third is
that traditional ground power stations occupy a large amount of land, while
Tongjing's power station is characterized by its ability to automatically adjust
according to changes in terrain. At the same time, each battery array panel has
four foundation piles placed directly on the ground without digging the land. It
has been designed to withstand Category 12 typhoons and has structural design
features.
This kind of foundation pile only occupies 1% of the floor area and
basically does not damage the cultivated land. At the same time, the tracking
system can be adjusted in time, so that the battery panels can be erected to
facilitate the entry of large machinery to achieve mechanized farming. Precisely
because the temperature in the south is high and the crop growth period is
short, after the solar panel is installed, it can block 30% of the sunlight. The
temperature of the crops will be reduced by reducing the direct sunlight under
the solar panel, which can form a microclimate growth environment and increase
the growth of crops. period to improve crop quality. To this end, we have
established a specialized agricultural service development and management
company to carry out agricultural development for our power station's
agricultural and photovoltaic complementary projects. At the same time, we will
plant various shade-loving crops, Chinese medicinal materials, etc. under the
panels according to different situations, thereby improving the comprehensive
quality of the power station. development and economic benefits.
Strong integration
Build smart photovoltaic power stations based on information technology
On the one hand, Tongjing Technology strengthens cooperation with domestic
universities in scientific research and talent training, while also
strengthening the company's independent innovation and technology research and
development capabilities; on the other hand, it strengthens cooperation with
powerful and technological international companies like Huawei Technologies.
Leveraging Huawei's international leadership and deep accumulated advantages in
the fields of digital information, communications, and Internet technologies, as
well as its pioneering cross-border integration of digital information
technology, Internet technology, and photovoltaic power generation technology in
smart photovoltaic solutions, we are committed to creating a truly Meaningful
smart photovoltaic power station.
Tongjing Technology is the first company in the world to use an inclined
single-axis linkage tracking system and an optimized configuration of lean
component systems on the roof to maximize power generation benefits. Wu Jiannong
said that the usage data of the 470kW Aushite rooftop project in Quzhou,
Zhejiang, which was completed in April this year, shows that after adopting the
autonomous tilted single-axis tracking system, the power generation can be
increased by 20%. After using Huawei string inverter, it can be further
improved. Increase the power generation by 10%; if improvements are made in
electrical appliances, I believe the power generation can be increased to
30%.
Our cooperation with Huawei is not only because Huawei is the world's
leading provider of information and communication solutions, but also has
established advantages in smart photovoltaic power station solutions in the
fields of telecommunications networks, enterprise networks, consumers, and cloud
computing. More importantly, Huawei's leading edge in technical quality
indicators enables the power station to better increase power generation,
improve safety, stability, and convenient operability. Huawei's rapid operation
and maintenance services also lay a solid foundation for improving the quality
of power generation and power supply. . Our cooperation with Huawei will also
play a positive role in promoting the innovative development of future smart
photovoltaic power stations. This will also strengthen our confidence in
becoming a partner with Huawei and our determination to integrate with Huawei in
smart technologies such as information and the Internet. Wu Jiannong pointed
out.
The smart photovoltaic power station solution enables high-speed wireless
transmission signals to cover the entire power station. No matter where the
staff goes, they can track and view the power generation, operation, and
management status of the power station anytime and anywhere. Talking about the
future, Wu Jiannong said that he will create a truly intelligent photovoltaic
power station management model, introduce drone inspections, robot maintenance,
etc., to truly realize digital photovoltaic power stations, make power stations
simpler, and intelligent photovoltaic power station management with automated
operation and maintenance. Tongjing Technology is committed to building a
photovoltaic power station into an innovative model that integrates tourism,
scientific research, education and training, ecological agriculture, and
photovoltaic power generation.
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