Power Grid Super Engine

Author:State Portal Newspaper Time:2022.08.28

For the new journey, build a new era. Since the 18th National Congress of the Communist Party of China, my country's various undertakings are changing with each passing day. As an important infrastructure that is related to the national economy and people's livelihood, the grid has played an important role in promoting industrial upgrading, stimulating economic growth, helping rural revitalization, promoting energy transformation, and promoting carbon peak carbon. In order to show the extraordinary achievements of the State Grid, Power Grid headline planning and launching a series of special "Grid Super Engineering", so stay tuned.

There is a power "high -speed road",

Cross Sichuan, Chongqing, Hubei,

5 provinces (municipalities) in Anhui and Jiangsu,

The total length is 2080 kilometers.

Through this road,

Clean water and electricity in Baihe Beach

"Express" only takes 0.007 seconds to Jiangsu!

We put this

Apply 1,000 kV exchanges and

± 800 kV and above DC transmission technology,

Long -distance, cross -regional, full capacity,

High efficiency and low loss

Power -specific "high -speed road" is called

UHV transmission line.

Today, look at the whole country,

In your inadvertent,

There are tens of trillions of electric energy every year

Cross the lake and the sea, cross the mountains,

Over the length exceed

48,000 kilometers of high -voltage transmission line

It was sent to the front line of economic development.

▲ The UHV channels surrounded by blue sky, white clouds, and green mountains. Photography: Ding Yongqing

Perminal high -voltage lines,

Weaving a piece

Unprecedented super network,

Achieved in the Chinese energy territory

A cross -century

Energy resource allocation and reorganization.

Why do we do

"Great Power Heavy Instrument" UHV?

How did we do it?

From west to east

China,

Vigorously,

More than 50 latitudes across north and south,

The more 60 longitude, the more east -west,

It is the world's climate, region, environment

One of the most complicated countries,

Also global natural resources

One of the richest countries.

▲ The magnificent Taihang Mountain. Photography: Liu Qiang

However,

my country Energy Resources and

Demand is reversed.

More than 80%of energy resources

Distributed in the west and northern regions,

More than 70%of energy consumption

Concentrated in the central part of the East,

Energy -enriched area distance load center

1000 kilometers to 4000 kilometers.

▲ The air overlooks the new energy base of Hexi, Gansu. Picture source: State Grid Gansu Electric Power

How to cross time and space obstacles,

It will hide deep in western China and north

Energy resources are efficiently sent to

What about the load center in the east?

Build a large -scale cross -provincial cross -district for energy

The conveying channel is imperative.

▲ From the distance, the night lights in Shanghai are bright. Picture source: State Grid Shanghai Electric Power

then,

From the 500 kV line as the connection line

Cross -provincial power grid

Go to Tibet and Northwest Power Grid

Implement asynchronous networking,

my country has formed except for Taiwan except Taiwan

National Electric Power Networking Fair.

▲ Qinghai -Tibet Electric Power Networking Project. Photography: Wang Jianjun

"Ning Ring Electric and other development, so as not to let development and other electricity."

As the economy takes off,

The rapid growth of electricity consumption,

China has become the largest in the world

Energy producers and consumer countries.

my country needs

There are more and more transmission lines,

The transmission capacity is also increasing.

However,

The transmission channel is also a valuable resource,

The construction of the power grid also needs to be carefully calculated.

For a good way

Meet the needs of economic and social development,

Fundamental solution

Energy resources efficient allocation issues,

UHV transmission is put on the agenda.

that's it,

One by one, high -voltage "power fast lane"

Open the "meridian" of China's energy transportation,

Also ushered

"West Power East Delivery, Northern Power South Concert

Water and fire mutual help, complementary scenery ""

Highlights.

▲ UHV transmission channel. Photography: Wei Zhen

From scratch

As a manufacturing country, China,

Energy's rice bowl must be in your own hands.

From high pressure to ultra -high pressure,

From ultra -high pressure to UHE pressure,

Stepping on the drum point of economic development,

China's long -distance transmission technology has made rapid progress.

Currently, China Grid

The highest voltage level has reached

AC 1,000 kV

And DC ± 1100 kV,

Power transmission distance of a single line

It exceeded 3300 kilometers.

China becomes

The world with the highest voltage level in the world.

Do not accumulate, there is no thousand miles,

Climbing World Power Technology

"Mount Everest",

It's not done overnight,

There are too many problems that need to be broken from zero breakthrough.

Actually, many developed countries

Starting from decades ago, he started to study UHV,

But in the end they all ended in the middle of the "retirement",

Only China persisted.

▲ At that time, the equipment in the DC project in Nanqiao was "foreign goods". (Historical data map)

my country since the mid -1980s

Just start to carry out high -pressure technology

Some preliminary research and tests;

year 2004,

Formally launched UHV transmission projects

Key technology research and feasibility study.

China's power grid engineers understand,

Only independent innovation is the way out.

After countless power workers

The night over the night over the end of the night,

China cracked

UHV AC transmission transmission overvoltage control,

Out -which configuration,

Electromagnetic environment control,

Extra high voltage passage mixed power grid

Safety control and other world -class problems,

Eventually, a breakthrough of "from 0 to 1" was achieved. ▲ Power grid employees carried out across the Yellow River high -altitude operation on the 1,000 kV Yumheng -Weifang Special High -voltage transmission line. Photography: Xu Ke

Large power grid security control problem

How to solve?

The Chinese Academy of Electrical Sciences was completed

World

Power system simulation platform,

Ultra -large high pressure

Traffic DC hybrid power system

I have calculated the panoramic simulation calculation,

Simulated more than 100,000 fault conditions

How to run,

Fully verify

Safety and reliability of UHV Power Grid.

▲ National Grid Simulation Center. Image source: Chinese Academy of Electrical Sciences

UHV transformer and UHV stream replacement valve

As a UHV transmission engineering

Core equipment,

It is like a heart,

Due to the difficulty in R & D,

Be known as

"Pearl on UHV Technology Crown".

In order to overcome the core technology,

State Grid Corporation has gathered more than 300 units

Thousands of scientific research and technical experts,

He has been developing for many years.

▲ The transport team containing a transformer containing ± 800 kV Yajian special high -voltage stream stream stations marched on the road of Xiaota Mountain, Yanyuan County, Liangshan Yi Autonomous Prefecture, Sichuan Province. Photography: Zheng Xianlie

You may not think of it,

Convert AC electricity to

Key equipment for DC electricity-

UHV stream exchanges,

Its production workshop ratio

The environment of hospital brain surgery

Also clean 100 times.

▲ ± 1100 kV Changji stream -changing station pole Ⅰ low -end valve hall equipment. Photography: Guo Jian

now,

China has become the first in the world,

It is also the only one

Master the core high -voltage core technology

And a full set of equipment manufacturing capabilities

And put it into a country where commercial operations,

Successful realization

"Chinese Creation" and "China Leading"

Counterattack.

China is not only built

Large power grid with UHV as the backbone grid,

Created the national network of energy transportation channels

World -class model,

And it has become the field of UHV transmission

One of the makers of international standards.

Now,

We can proudly say,

In the field of power transformation technology,

China has reached the international advanced level.

▲ Ultra -high -voltage transmission lines across the mountains and clouds. Picture source: National Grid

From one to one

Power grid is the arteries of economic development.

Since the founding of New China,

China has gone through the developed countries for decades

The development history of hundreds of years,

The total economic volume jumps in the world's second place,

Behind this "China Speed"

One of the main forces of the new infrastructure

UHV blessing.

Year 2009,

The world's first commercial operation,

It is independently developed and designed by our country

UHV AC project

1000 kV Jin Southeast -Nanyang -Jingmen

Demonstration project of UHV Exchange Test Project,

The North China Power Grid and Huazhong Power Grid

Water and fire adjustment, complementary advantages.

China has entered the era of UHV.

▲ 1,000 kV Jin -Nanyang -Jingmen special high -voltage exchange test demonstration project. Photography: Xu Ke

year 2010,

The world's first UHV DC project

± 800 kV Yunnan -Guangdong

UHV DC transmission demonstration project

Regardless.

Electricity from Yunnan

After more than 1,400 kilometers,

Benered to Guangzhou,

Light litting the lights.

China Power Grid Enter in one fell swoop

In the era of DC high -voltage hybrid grid.

▲ ± 800 kV Yunnan -Guangdong UHV DC transmission demonstration project. Picture source: Southern Power Grid

For more than ten years,

The length of the high -voltage line of China,

The rapid increase in transportation power,

From a special high -voltage line

To a high -pressure super network,

Grocery

Take the plateau, pass the desert, wear the river,

Live for economic development and people

Injecting a steady stream of motivation.

Refresh again and again

"China's first" and "the most in the world"

In innovation,

China Special High pressure construction has been realized

Leaping Development.

2019,

The highest voltage level in the world,

The most transmission capacity,

Power transmission distance

UHV project

± 1100 kV 伏皖 — South Anhui

UHV DC transmission engineering is put into operation.

The project is 3324 kilometers in length,

Along the way, crossing the Qinling and Yangtze River Tianyu along the way,

Let Xinjiang's wind light up in East China,

Become a western frontier

With the "Electricity Silk Road" in East China.

▲ ± 1100 kV — 11 ± ± DC transmission project. Picture source: National Grid

same year,

1000 kV Sutong Gil Comprehensive Pipe Corridor

The project is completed and put into operation.

This plain

"The First Corridor of the Yangtze River" is called

Cross -river pipe corridor tunnel project

Not only created a number of "China's first",

There are also many "the most world",

Currently

The highest voltage level in the world,

The most transport capacity,

Technical level

Ultra -long GIL Innovation Project.

▲ 1000 kV Sutong Gil comprehensive pipe galleries. Photography: Shi Jun

2020,

World first

Mainly transporting clean energy

UHV Power Transmission Channel

± 800 kV Qinghai -Henan

UHV DC transmission engineering is put into operation.

Through a line of more than 1500 kilometers,

A large amount of green energy in Qinghai

He was sent to Henan.

▲ ± 800 kV Qinghai -Henan UHV DC project. Photography: Zou Jianhua in the same year,

World first

UHV flexible DC demonstration project-

± 800 kV U Dongde Power Station

Give Power Electric Guangdong Guangxi

UHV multi -end flexible DC

Demonstration projects are put into production.

Depart from Yunnan, the UHV line,

Cross the mountain rivers and lakes,

Send the abundant water and electricity to

Electricity and load center in Guangdong and Guangxi.

▲ ± 800 kV U Dongde Power Power Power Division of Guangdong Guangxi UHV multi -end flexible DC demonstration project. Source: Southern Power Grid

also,

1000 kV Xiong'an -Shijiazhuang,

1000 kV Zhangbei -Xiong'an

UHV AC transmission transmission project

It was launched in 2019 and 2020 respectively.

Can do it every year

The "Millennium Plan" is transported by Xiong'an New District

Clean power above 7 billion kilowatt -hours,

To realize the "city of the future"

100%clean energy power supply

creating condition.

▲ 1,000 kV Zhangbei -Xiong Ant high -pressure exchange project with the Great Wall. Photography: Guo Liqiu

December 2021,

"Fourteenth Five -Year Plan" period

my country started construction

The first high -voltage transmission and transformation project

1000 kV Nanchang -Changsha

The UHV AC project was completed and put into operation.

Project created

New record of UHV construction speed.

▲ 1000 kV Nanchang -Changsha Special High -pressure AC Engineering. Photography: Gao Langzhou

July 2022,

Another major project of "Western Power East Delivery"

± 800 kV Baihetan -Jiangsu

UHV DC projects are completed and put into operation,

Total investment of 30.7 billion yuan,

Can be delivered every year

Clean electricity exceeds 30 billion kilowatt -hours.

Jiang Shui, running continuously,

Surging power from Jinsha River,

Along the tower silver line

Light the bright lights outside Gusu City in an instant,

Economic and social development

Inject sufficient green energy.

▲ ± 800 kV Baihetan — Jiangsu UHV DC transmission line project (Chongqing section) successfully crossed the Yangtze River. Photography: Wang Huaquan

"Increase intensity planning and construction

Based on a large -scale landscape base,

With its surrounding clean and efficient

Advanced energy -saving coal power support,

Stable and safe and reliable

UHV transpressive wire line is a carrier

New Energy Supply and Conditioning System ",

my country has built the largest global scale

Extremely high -voltage DC hybrid grid.

up to now,

Cumulative in the country under construction

"19 intersection and 20 direct" UHV transmission projects.

Source: National Power Grid, Southern Power Grid

Before the end of 2022,

State Grid Corporation

It will be invested nearly 300 billion yuan,

The total investment in project construction reached 1.3 trillion yuan,

Drive upstream and downstream investment in the industrial chain

More than 26 trillion yuan,

Strive for the construction of the year

"4 Side 4 straight" UHV transmission project.

▲ ± 800 kV Baihetan — Jiangsu UHV DC project across the Hanjiang section construction site. Photography: Zou Xiaomin

now,

Zhang Bei's wind lights up the light of Xiong'an,

Sichuan hydropower is sent to Jiangsu, Zhejiang and Shanghai,

The wind of Xinjiang drove straight into the Central Plains ...

In implementing the national "Western Power East Delivery" strategy,

Help the country's air pollution prevention and control,

Serving new energy development,

Actively promote energy transformation,

Promote carbon peak carbon neutralization,

Promote industrial upgrading,

Drive economic growth and other aspects,

Extra the high -voltage grid spare no effort

Drawing on its "special".

▲ UHV -passing route through Gobi. Picture source: National Grid

Now,

UHV transmission engineering

Also follow the pace of "Belt and Road",

String to the world.

Represented by high -pressure technology

China Grid Technology

Has become the world's energy field

A beautiful business card,

Drive the Chinese electrical equipment manufacturing industry

Go abroad,

Go to a wider future.

▲ The second phase of the second phase of the high -voltage power transmission of the Brazil Meilshan special high -voltage power transmission has won the China Industrial Award and became the first overseas project to win the China Industrial Award. Picture source: State Grid International Company

Many years of dreams,