"Heavy" "Qing" said ② 丨 How to develop the development of clean energy and equipment "Later"?

The forum site.

Chuanguan News reporter Yuan Chenglin

"To achieve the" dual carbon 'goal, energy is the main battlefield, electricity is the main force, and power equipment is fundamental guarantee. "On August 27th, we will share the desk on the stations. Qu Xianming, director of the manufacturing research office, showed his views.

At the 2022 World Clean Energy Equipment Conference held in the afternoon of the same day, at the sub -forum of the advanced manufacturing process and technological innovation development of clean energy and equipment, Qu Xianming spoke on the title The results of the achievements provide reference experience and practices for the development of clean energy and equipment.

At the forum, Qu Xianming talked about three stories, and shared with everyone the process and inspiration of my country's solar photovoltaic power generation equipment, large hydropower equipment, and high -voltage, high -voltage, DC transmission and transmission equipment.

Story 1: Solar photovoltaic power generation equipment is overtaking

At the beginning of storytelling, Qu Xianming first took out a set of data: In 2021, my country's polysilicon output was about 505,000 tons, accounting for more than 70%of the global output; the output of silicon wafers was 227GW, accounting for 96%of the world; 93%; battery component output is 82 GW, accounting for 91%of the world.

"Except for polysilicon, other products account for more than 90%of the world's. It can be said that my country's photovoltaic power generation equipment occupies a global dominant position." Qu Xianming said.

This long disappears. Under the strong competitiveness of my country's photovoltaic manufacturing industry, most of the major foreign silicon materials, battery films and other manufacturers have withdrawn from the previous field of photovoltaic industry. Chinese companies have fully grasped the pricing power of the global photovoltaic industry.

Photovoltaic charging station roof. Data map

However, it took only 10 years to complete this butterfly change. What caused a counterattack? Qu Xiaoming took the industry leading company Xi'an Longji as an example.

The first is to change the road. Qu Xianming said that since the start of the business in Xi'an Longji in 2000, it abandoned the polysilicon wafer technology route that was generally adopted at home and abroad at that time, and opened a new way to focus on the single crystal silicon wafer technology route with high photoelectric conversion efficiency.

The second is craft innovation and manufacturing equipment innovation. 10多年来，西安隆基攻克了两大工艺难题——用金刚线切单晶硅代替传统的砂浆切割，用多次装料拉单晶工艺和连续拉单晶工艺代替一次只能拉一根单The traditional craft of crystal stick. In addition, Xi'an Longji cooperated with the equipment manufacturer to jointly develop digital reserves such as multiple installations of single -loading single crystal equipment and diamond cutting, forming a 100%independent industrial chain layout.

According to Qu Xianming, 26 photovoltaic equipment digital factories, which are currently constructed in Shaanxi, Jiangsu, Anhui and other places, all use independent domestic equipment. In 2020, Xi'an Longji has reduced the price of silicon wafers from 200 yuan/piece in 2006 to 3 yuan/piece, and the cost of photovoltaic power generation to 0.1 yuan/kWh was lower than the price of coal power. Comprehensive replacement of the film.

Another praise for Qu Xianming is that during the development of Xi'an Longji, a number of supporting companies have been led, of which 14 companies have been listed. The growth of supporting enterprises has also feeded the development of Longji. In 2021, Longji realized sales revenue of 80.932 billion yuan and net profit of 9.086 billion yuan.

Looking at the entire photovoltaic industry, my country's patent application in the field of photovoltaics ranks first in the world, accounting for 75.88%of the global photovoltaic power generation patent application volume. The photovoltaic conversion efficiency of commercial photovoltaic batteries has reached 23.7%, and the conversion efficiency of TOPCON and HJT photovoltaic batteries in the laboratory has exceeded 26%, which is at the highest level in the world.

Story 2: Large hydropower equipment from "following" to "leading"

"From following to the place where the leadership, it is in Sichuan, and in Deyang." Qu Xianming's words pulled the vision of the participants from the world to the "foot" -Sichuan is the largest hydropower province in the country. The site is located in Deyang Oriental Electric, Oriental Boiler, and National Aircraft Reinstallation have the world's leading level, and a number of products are unique to the world.

From the time axis, Qu Xianming started, and my country has mastered the design and manufacturing technology of the 700MW large hydropower units in the construction of the Three Gorges Project, and surpassed large foreign companies in hydraulic models; Technologies and hydropower equipment have entered the world's "unmanned region".

Baihetan Hydropower Dam. Three Gorges Group Pictures

The tackling tackling continued to advance towards the "Sham Shui District", and Qu Xianming introduced that during the "Thirteenth Five -Year Plan" period, my country continued to promote the construction of major hydropower projects such as Baihe Beach. Earthquake and seismic technology, high -cold and high -altitude areas of high -quality hydropower engineering construction technology, ultra -high dam construction materials and other technologies. "From design, manufacturing to the operation management of model power stations, my country is in the world's leading position."

From technology to the use, it is still leading. At present, my country's hydropower installed capacity, water and electricity power generation, and the number of dams in the world ranks first. The research on the special theoretical research of the special high dams and steps of the staircase reservoir, the basty technology and related basic theory of the construction and under construction lead the world.

Story 3: The standard for UHV transmission and transformation equipment has become international standards

"my country has established 33 special high -voltage projects, with a total length of 50,000 kilometers." Qu Xianming used a set of data to explain the "fast" of my country's UHV development. The conveying the aorta also provides the world with the power conveying solution that can be learned. What is the confidence of this solution? According to Qu Xianming, my country has mastered the high -pressure power transmission technology with high pressure theory, standards, equipment and engineering construction, and independent intellectual property rights, and took the lead in establishing a complete technical standard system, and made Chinese standards a world standard. When the power grid voltage increases from 500 kV to 100 kV, its transport capacity can be increased to 4 times that of the original, and the transmission loss can be reduced to a quarter of the original.

In Qu Xianming's view, UHV equipment represents the highest level of electrical equipment. At present, the design and manufacturing of switches, transformers, measurement protection and other equipment used in exchanges high -voltage projects in my country have reached the world's leading level, and the leading advantages of technology are further expanding; The design and manufacturing level of the tube, filter set of roads, gold gear and other equipment is at the world's advanced level, and partially reached the international leading level.

In the end, Qu Xianming said that as a post -developed country, the development of clean energy and equipment should be twisted: the road of open cooperation, actively introducing advanced foreign technology, good at learning, making improvements, and re -innovation; "It is an effective way to" later live up "; pay attention to the innovation and autonomy of process innovation and the manufacturer equipment manufacturing equipment of craftsmanship.

- END -