2(liu yunpeng)brief introduction to chinese power grids
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8/3/2019 2(Liu Yunpeng)Brief Introduction to Chinese Power Grids
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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