The power grid

Recently, CCTV financial channel column "China Economy Lecture Hall" specially invited Chinese Academy of Engineering academician Shu Yinbiao in-depth interpretation of why we build electric expressway.

Shu Yinbiao, academician of the Chinese Academy of Engineering, expert in power transmission and transformation engineering and energy and power planning, currently serves as chairman of China Huaneng Group Co., Ltd., and chairman of IEC, International Electrotechnical Commission. He has long been engaged in power grid operation and power system planning, UHV transmission engineering construction and technology research and development.

UHV is currently the world's highest voltage level of transmission technology, we use electricity is sent to thousands of homes through the grid. The power grid is made up of different voltage levels......

Why are the voltage levels getting higher and higher?

extreme high voltage  500KV

ultra-high voltage:1000KV

ULTRA-HIGH ADVANTAGE: ENHANCE 4TIMES, the waste DECREASEd 1/4,the space decrease1/2, the distance coverage 2000-3000kw

Why does our country need ultra high voltage?

I (Shu Yinbiao) summed up in eight words: national needs, national conditions

Between 2000 and 2010, China's installed capacity increased by 650 million kilowatts. During the rapid growth, 73 per cent of new capacity was coal-fired, and 70 per cent was in the east and central regions, where power shortages are acute.

This raises three questions:

First, coal and electricity transport continues to be tense

coal transportation 94% in "main west China regions"

electricity transportation 6% in "main west China regions"

Second, air pollution is serious in eastern and central China

The third is to bring the eastern and central coal and electricity prices rise

China's economic growth has put forward a lot of demand for electric power, electric power is the vanguard of the national economy, the development of electric power should keep pace with the development of the economy and moderately ahead.

As a result,

Where is the ultra high voltage technology?

ultra-high voltage bring1300billionRMB investment in western China

contribute  260billion RMB forGDP 

create 650,000  position of employee

increasethe taximcome 50billion RMB

the realtive electrical equipment and industry export reached more than 50billion UDS

The future development prospect of UHV

By 2060, when China is carbon neutral, its installed capacity of new energy will increase from 500 million kilowatts to 5 billion kilowatts, and the proportion of new energy power generation will rise from about 10 percent to about 60 percent. In the transmission link, UHV transmission should continue to give full play to its network advantages and functions to support the large-scale grid connection and consumption of new energy.

As we all know, new energy is a random and intermittent characteristics, we have no way to control wind power and photovoltaic. At the same time, China has a vast territory, and there are regional and seasonal differences in the power generation of new energy sources. It makes sense that in the east, there might be a week of uninterrupted overcast and no photovoltaic power, while in the west, the sun is shining. In order to achieve this multi-complementary, regional mutual aid, we need a strong network platform, UHV will play this role.

conclusion

In the process of constructing new power system, China's power science and technology level will make greater progress. UHV will play an important role in achieving the goal of carbon peak and carbon neutrality and in the process of building a community with a shared future for mankind.