UHV has become an important carrier for China's clean energy development

On November 21, the first UHV transmission equipment manufacturing and application summit forum was held
in Chengdu, Sichuan Province.
With the theme of "Promoting the Rapid Upgrading of National Equipment Manufacturing Industry", the forum aims to build an exchange platform for all parties involved in UHV equipment production, education and research, summarize China's UHV technology innovation and engineering construction achievements, and reflect the role of UHV in promoting the transformation of
China's energy development mode and helping the upgrading of national equipment manufacturing industry.

The forum was hosted
by the Society of Electrical Engineering of China and Yingda Media Investment Group Co.
, Ltd.
Experts from the China Society of Electrical Engineering, China Machinery Industry Federation, scholars from scientific research institutes, universities and investment institutions, representatives of electric power enterprises and equipment manufacturing enterprises attended the forum
.
The forum was chaired
by Huang Qili, academician of the Chinese Academy of Engineering.
Zhou Xiaoxin, academician of the Chinese Academy of Sciences, attended the meeting
.

The forum was held
against the background of China's UHV project beginning to enter a period of accelerated construction.
At the forum, the participants explored and exchanged views on the manufacturing and application of UHV transmission equipment, and explored ways of cooperation and common development through the dissemination and sharing of relevant information
.
Cai Weici, executive vice president of China Machinery Industry Federation, explained the development of China's electrical equipment manufacturing industry, and representatives of equipment manufacturing enterprises demonstrated the relationship between UHV and the development of manufacturing technology
.
Relevant experts also elaborated
on the innovative development of UHV equipment from the technical level.

It is understood that China began to build UHV projects in 2006, and many lines have been completed or under construction
.
As of the end of November this year, two UHV AC projects have been completed in the jurisdiction of State Grid (Jindongnan-Nanyang-Jingmen UHV AC Test and Demonstration Project, Anhui Power East Transmission Huainan to Shanghai UHV AC Transmission Demonstration Project), and two UHVDC projects (Xiangjiaba-Shanghai UHVDC Project, Jinping-Sunan UHVDC Project); There are three UHV projects under construction (Zhejiangbei-Fuzhou UHV AC Project, Xiluodu-Zhejiang UHVDC Project, Hami-Zhengzhou UHVDC Project); In addition, 3 UHV AC projects and 2 UHV DC projects have obtained "road strips"
.
Within the jurisdiction of China Southern Power Grid, two UHVDC projects have been completed (Yunnan-Guangdong UHVDC project and Yunnan Pu'er-Guangdong Jiangmen UHVDC project).

The practice of UHV operation shows that the development of UHV plays an important role
in developing clean energy, changing the mode of energy development and improving the security of energy supply.

UHV has become an important carrier
for China's clean energy development.
80% of China's hydroenergy resources are distributed in southwest regions such as Sichuan and Yunnan, wind energy is mainly distributed in the "three north" regions such as North China, Northwest and Northeast China, and solar power generation suitable for large-scale centralized development is mainly distributed in the western and northern deserts and Gobi Desert
.
The distance between the above areas and the central and eastern load centers is generally 800~3000 kilometers, while the economic transmission distance of UHV AC and DC lines is more than 1500 kilometers and 3000
kilometers respectively.
The construction of UHV power grid has realized the large-scale and long-distance transmission of various clean energy and promoted the efficient and safe use
of clean energy.

According to statistics, since 2009, under the adverse impact of the international financial crisis, the export of UHV main equipment manufacturing enterprises has not fallen but risen, the total export volume of products above 500 kV has reached 10 billion yuan, with an annual growth rate of more than 40%, UHV performance has become a golden business card
for domestic enterprises to open the international market.

At present, the development of UHV has become a national strategy
.
In March 2011, the development of UHV transmission technology was included in the Outline of the Twelfth Five-Year Plan for National Economic and
Social Development of the People's Republic of China.
In January 2013, the development of UHV was included in the national "Twelfth Five-Year Plan for Energy Development
".
On January 18, 2013, the project "Key Technology, Complete Equipment and Engineering Application of UHV AC Transmission" carried out by the State Grid Corporation of China won the special prize of the National Science and Technology Progress Award, which is the highest national science and technology honor
in the field of electrical engineering in China.

UHV transmission technology includes two categories
: UHV AC transmission and UHVDC transmission.
Among them, UHV AC transmission refers to AC transmission with a voltage level of 1000 kV and above, and UHVDC transmission refers to DC transmission with a voltage level of 800 kV and above
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