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¨Brief Introduction to Chinese

Power Grids

2011

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Fundamental Principles of Power Industry

Installed Power-Generating Capacity, Power Supply and Demand

Power Grid Scale

Power Industry Structure and Main Power Corporations

Power Grid Structure

500kv

500kV Power GridsUltra-High Voltage (UHV) Power Transmission

Power Dispatch

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Fundamental Principles of Power Industry

Raise energy utilization efficiency, preserve the

ecological environment, optimize the development of 

coal fired power, orderly develop hydropower, speed

up nuclear power, accelerate the development of the

new energy power , stress power grid construction,

expand the scale of power transmission from west to

east.

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Installed Power-generating Capacity, Power Supply and Demand

20109.627.0773.49%

2.1222.04%1082

1.12%

3107

3.23%

Till the end of 2010, the installed power

generating capacity had reached 962GW.

Thermal power, 707GW, 73.49%.

Hydropower, 212GW, 22.04%.

Nuclear power, 10.82GW, 1.12%.

Wind power, 31.07GW, 3.23%.

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The Installed Power Generating Capacity of 

China

0

100

200

300

400

500

600

700

800

900

1000

1980 1990

GW

2010

2000

962GW

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Power Supply and Demand

201042280686334145768.17501

In 2010, the total generated energy in Chinareached 4228.0G kWh.

Hydropower686.3G kWh.

Thermal power, 3414.5G kWh.

Nuclear power, 76.8G kWh.

Wind power, 50.1G kWh.

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Total Generated Energy of China

0

500

1000

1500

2000

2500

3000

3500

4000

4500

1971 19 80 19 90 19 92 19 94 19 96 1998 2000 2002 2004 2006 20 08 20 10

G kWhG kWh 4228 G kWh4228 G kWh

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Power Supply and Demand

2010O2200

In 2010, power supply and demand was basically

balanced in China. Though the regional lack of power stillexisted, the tense situation of the supply and demand was

obviously relieved. The max lack of power was 22GW in

case of peak load.

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201022044.261000kV2718750kV7303500kV9.3330kV1.72220kV23.97

Till the end of 2010, the length of the

transmission lines of all over 220kV reached 442.6

thousand km, more specifically,

1000kV transmission lines, 2718 km.750kV transmission lines, 7303 km.

500kV transmission lines, 93000 km.

330kV transmission lines, 17200 km.

220kV transmission lines, 239700 km.

Power Grid Scale

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2010220191691 1000kV1130 750kV3640

500kV72180 330kV6209220kV108792

Till the end of 2010, the capacity of powertransformers reached 1916910MVA, more specifically,

1000kV power transformers, 11300MVA.

750kV power transformers, 36400MVA.

500kV power transformers, 721800MVA.330kV power transformers, 62090MVA.

220kV power transformers, 1087920MVA.

Power Grid Scale

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Power Industry Structure

Power Grid Companies

Independent

Power plants

Power Transmission

Power Supply

Consumers

Independent

Power plants

Power Generation

Power Plants

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Main Power Corporations

¨:

Power Grid Companies:

¨State Grid Corporation of China (SGCC)

¨

China Southern Power Grid Co., Ltd. (CSG)

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The Geographic Distribution of the Power Grid Companies

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Main Power Corporations

/Electric Power Generation Companies

201011384

China Huaneng group (CHNG, 113.84GW in 2010)

201010579

China Datang Corporation (CDT, 105.79GW in 2010)

20108610

China Huadian Corporation (CHD, 86.10GW in 2010)

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Main Power Corporations

20109531

China Guodian Corporation

(CGD, 95.31GW in 2010)

20107073

China Power Investment Corporation(CPI, 70.73GW in 2010)

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Main Power Corporations

20102129China Three Gorges Project Corporation (21.29GW in 2010)

697China Guangdong Nuclear Power Holding Co., Ltd.

(CGNPC, Nuclear Power generating capacity 6.97GW in 2010)

2119Guangdong Yuedean Group Co., Ltd (21.19GW in 2010)

1941Zhejiang Provincial Energy Group Company Ltd.

(19.41GW in 2010)

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/Power Grid Structure

1990199019501950 19601960 19701970 19801980

35~ 35~ 

110kV110kV 220kV220kV

330kV330kV

500kV500kV AC/DCAC/DC

20002000

750kV750kV

20052005

1000kV1000kVkVkV

The Development of the Voltage Step

20082008

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500kV330kV

220kV

Till now, the 500kV(330kV) and 220kVtransmission lines have become the backbones in China.

The northern, central and southern corridors are

formed initially to divert power from the western to the

eastern regions. The connections between different

provincial grids in the same region and those between

different regional girds are realized.

/Power Grid Structure

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/Power Grid Structure

265State Grid Corporation of China (SGCC)¶s

controlling areas include 26 provinces,

autonomous regions and municipalities. SGCC

consists of North China Power Grid, Northeast

Power Grid, East China Power Grid, CentralChina Power Grid, and Northwest Power Grid.

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The north China power grid consists of 

Beijing-Tianjin-Tangshan Grid, South Hebei

Grid, Shanxi Grid, Shandong Grid and West

Inner Mongolia Grid.

North China Power Grid

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Beijing-Tianjin-Tangshan region is the main

load center that receives power from Shanxi

Province and Inner Mongolia Autonomous Region.

North China Power Grid

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5

11

During the 10th Five-Year Plan period (2001-2005),the number of the electric power diversion corridors

from the western to the eastern regions in north China

power grid, had been expanded to 5 with 11 transmission

routes.

North China Power Grid

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Northeast Power Grid

The northeast China power grid consists of 

Liaoning Grid, Jilin Grid, Heilongjiang Grid,

and East Inner Mongolia Grid.

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Heilongjiang Province and East Inner

Mongolia Autonomous Region are the main power

delivering region. Power flow direction is from the

northern to the southern regions.

Northeast Power Grid

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500kV220kV500kV220kV

The main part of the northeast power grid is formedwith 500kV and 220kV transmission lines, there are 3

500kV transmission routes and some 220kV transmission

corridors from the northern to the southern regions.

Northeast Power Grid

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The east China power gird is made up of Shanghaigrid, Jiangsu grid, Zhejiang grid, Anhui grid and Fujian

grid. The power flow directions are from the western to

the eastern regions and from the northern to the

southern regions as well.

East ChinaPower Grid

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500kV

500kVAt present, two 500kV central circle grids are formed

in the Yangtze delta area of East China. Depending on

the 500kV central circle grids, the strong 500kV power

grids have been built in each province and city.

East ChinaPower Grid

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The central China power gird consists of 

Hubei grid, Henan grid, Hunan grid, Jiangxi

grid, Sichuan grid and Chongking grid.

Central ChinaPower Grid

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Central ChinaPower Grid

The main water resources in China spread in Sichuan

Province, Hubei Province and Hunan Province. The three

gorges stands in Hubei Province and the electric power is

transmitted via high-voltage direct-current transmission

projects.

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330kV

The northwest China power gird includes

Shaanxi grid, Gansu grid, Ningxia grid, Qinghai

grid and Xinjiang grid, with the 330kV power

grids as its backbone.

Northwest Power Grid

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4330kV

There are no less than four transmission lines over

330kV between each provincial power grid. The electricity

energy is balanced mainly in each provincial power grid,

with little electricity energy exchange between them.

Northwest Power Grid

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South China Power Grid

The south China power gird managed by China Southern

Power Grid Co., Ltd. (CSG), consists of Guangdong grid,

Guangxi grid, Hainan grid, Guizhou grid and Yunnan grid. At

present, the Hainan provincial power gird is not connected with

the south China power grid.

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1650

There are six AC transmission corridors and four DC

transmission corridors in south China power grid. AC and

DC transmission lines run in parallel. The power capacity

diverted from the western areas to the eastern areas has

reached 16.5GW.

South China Power Grid

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Six AC And Four DC Transmission Lines

500Four 500kV AC lines from Tianshengqiao to Guangzhou

500Two 500kV AC lines from Guizhou to Guangzhou

s 500One s500kV DC lines from Tianshengqiao to Guangzhou

s 500One s500kV DC lines from the Three Gorges to Guangzhou

s 500

Three s500kV DC lines from Guizhou to Guangzhou

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The Geographic Distribution of the Regional Power Grids

Northwest China

Power Gird

North China

Power Gird

Northeast China

Power Gird

Tibet Power Gird

East China

Power GirdCentral China

Power Gird

South China

Power Gird

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The Installed Power Generating Capacity of 

each regional power grid/

Xinjiang

Tibet

Taiwan

Northeast China Power Gird

87..87GW

North China Power Gird

213.15GW

Northwest China Power Gird

86.73GW

Central China Power Gird

199.64GW

East China Power Gird203.87GW

South China Power Gird

168.9GW

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At present, all power girds are connected with one

another around China has been basically realized. The

connection of northeast China power grid to the northChina power grid, that of the north China power grid

to the central China power grid, that of the northwest

China power grid to the central China power grid, that

of the central China power grid to the east China powergrid, and that of the central China power grid to the

south China power grid have been completed.

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Tibet

Central China

Power Grid

Northwest ChinaPower Grid

North china

power grid

Northeast china

Power grid