Wind Power Development & Smart Grid in...
Transcript of Wind Power Development & Smart Grid in...
Division of Energy and Mining Engineering
China Academy of Engineering
Northeast China Grid Co., Ltd.
Huang Qili
The China-US Strategic Seminar of Smart Grid
Washington D.C. , America, 30 May, 2013
Wind Power Development & Smart Grid in China -The thinking of Development phases
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Source:CWEA
Newly installed and total installed wind
power capacity in China from 2001-2012
Wind Power
Development in China
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● By 2020:wind power installed capacity will reach 200GW
● By 2030:wind power installed capacity will reach 400GW
● By 2050:wind power installed capacity will reach 1000GW
Wind power will meet 17% of the domestic power demand,
and become the second largest power supply after coal
energy.
China Wind Energy Development Roadmap 2050
Source:China National Renewable Energy Center 3
The Phases of Wind Power Development in China
● 1st stage : WTGS demonstration and initial
development 1985--2005
● 2nd stage : wind farm rapid development 2005-2010
● 3rd stage: jointly development of wind farm
and power grid 2010--
● 4th stage win-win development of wind power and
large energy power generation system 2015
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Period :1985-- 2005
Features:testing and demonstration,after efforts of more than
two decade, it moved to mature and scale up
The first wind farm was built in Malanwan in
Shandong province, may of 1986
Total wind power installed capacity
1990 4MW
1996 57MW
2005 1249.5MW
1st stage WTGS Demonstration and Initial Stage of Development
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● Period:from 2005 to 2010
● Law of the People’s Republic of China on Renewable Energies
released on 2010.
● Features:
① Developing speed was fast :
2009 : 25.805 GW
2010 : 44.724 GW
2011 : 62.364 GW
2012 : 75.324 GW, grid-connected installed capacity was
60.830 GW, 65 times as compared with that of 2005
② Scale up development of mainstream WTGS
(1、2、3MW on-shore;5MW off-shore )
③ China has completed the planning for nine 10GW-class
large-scale wind power bases (‘Wind Power Three Gorges’ ).
2nd stage Fast Development of Wind Farm
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● Focus more on wind farm, less on the wind power
transmission and consumption.
● Power grid is lagging and weak; the proportion of the peaking units, like pumped storage and gas turbine, is less than 2%, Peak shifting of power grid is weak; wind power local consumption and long distance transmission capacity is insufficient; wind power can not be timely grid-connected and fully consumed.
●Abandoned wind power was stay at high level. in 2012, the average abandoned wind power generation reached 20%, it even reached 50% in some areas (such as Jilin province) during the winter.
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Main problems
● Time period: 2010--, overlap with the 2nd stage
● Milestone:
◆“smart grid” was firstly mentioned in the report on the work of the government by Chinese premier in Mar. 2010.
◆ < Roadmap of Wind Power Development 2050 in China> was issued in Oct. 2011.
◆ State Grid Corporation of China released the grid connection and power transmission plan for the seven 10GW-class level wind power bases in 2015 and 2020 on 28th May 2011.
A new stage was began for the coordinated development of wind power and power grid.
3rd stage Common Development of
Wind Power and Power Grid
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According to the national plan, wind power
capacity will reach 200GW in 2020, 80% of wind
power will be located in Three North China Regions ,
far away from load centers. To balance ,
accommodate and consume wind power in large
region, we need to build power grid highway,
crossing east-west and south-north area in China,
and the UHV transmission
grid for crossing large
regions wll be constructed.
Common Development of
Wind Power and Power Grid
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● “Building up Large Wind Power Bases, Connecting into Bulk Power System”
● ‘Wind Power Three Gorges’- 10GW-level wind power bases; ‘wind Power Highway in the Air’ - UHV power transmission
● Jiuquan wind power base in Gansu province-
by 2010 5.16GW
2015 12.71GW
2020 20GW
will connecting into Northwest power grid with
750kV transmission system (1st phase )
±800kV DC transmission system (2nd phase )
Wind Power Highway in the Air
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Transmission scheme for 2nd phase of Jiuquan WPB
±800kV DC transmission system will be built in 2015 between Qiaowan in Gansu province and Zhuzhou in Hunan
province with the distance 2690 km. Hunan
Qiaowan
Large Wind Power Bases and UHV power
transmission
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● Common development of large-scale wind power base and
distributed wind power generation.
● Distributed grid are connected to local grid nearby.
Advanced transmission technologies: VSC-HVDC and
Fractional Frequency Transmission technology.
Develop on-grid and off-grid wind power. Solve the power
supply problem of 3 million population without electricity
through extending large power grid and developing micro-
grid.
Encourage the direct power supply from wind farm to big
consumers and new consumers ( electric vehicle ),
communicate with consumers by two-way .
Develop distributed wind power
generation
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●To fully transmit and utilize wind power, have to
develop power grid highly-intelligent operating and
dispatching technology, wind power forecasting
technology, large-scale energy storage technology and
so on.
● Guarantee the safe operation of power grid with high
wind power penetration , to balance and accommodate
clean energy in larger scale in China.
Intelligent Dispatching
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Site:Hebei Zhangjiakou. It has a "four in one" system with wind power,
solar photovoltaic power, energy storage and smart transmission. It has
developed to become the base for testing different kinds of new energy
grid connection technologies in China.
Planned capacity wind power: 500MW
solar PV: 100MW
energy storage:110MW
The first-period project:wind 100MW, PV 40MW and energy storage
20MW, it put on operation since 25 Dec, 2011. using multi-kinds of wind
turbines, PV-cells and energy storages.
the Successful Implementation of "four in one" Demonstration Project
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operation data curve
跟踪计划
Before smoothing, fluctuation of wind and solar is 15.18% and 6.56% respectively, fluctuation rate of wind combined with solar is 11.39%. After smoothing, fluctuation rate of wind-
solar-energy storage generation is 3.79%.
Smoothing output Realize energy storage of 63MWh,having the advantage of quick response at second level which traditional peaking power source not possessing.
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0
20
40
60
80
100
120
0:00 4:48 9:36 14:24 19:12 0:00
风电 光伏 储能 风光储 风储
Peak shifting
Deviation to traced generation scheduling is smaller than 3%,reducing the output fluctuation is benefit to the implementation of dispatching plan
and enhance the resource utilization of wind and solar energy.
Tracing schedule Frequency Regulation
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Coordinated
Monitoring
Control
Wind
Farm
Energy
Storage
Station
PV
Station
Under smoothing operation model, fluctuation rate of 10min is limited to 5%.
Under tracing model, probability of 10% and above deviation from actual output is
limited to 5%
6 7 8 9 1024
30
36
42
48
54
60
66
72
时刻(小时)
风电场输出能量
(MW
)原始数据
新能源/储能 15:1 平滑效果:波动量>20%/小时
新能源/储能 7.5:1平滑效果:波动量<10%/小时
新能源/储能 3:1平滑效果:波动量<3%/小时
新能源/储能 3:2平滑效果:平直
● Practice Wind-Solar-Storage ratio 10:4:2
Research & Practice
●Research
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Complementary of multi-energy power
generation to the power output fluctuation
Operation model Power output
fluctuation
%
Based on
Wind only 30 Local wind and solar resource
condition
Wind and PV (1:1) 12 Local wind and solar resource
condition
wind-PV
and storage(1:10)
9 Local wind and solar resource
condition
wind-PV
and storage(1:5)
5 Local wind and solar resource
condition
wind-PV
and storage(10:3)
3 Local wind and solar resource
condition
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● Time period: since 2015 (expected)
● The large power generation system: together consist of renewable energy generations including wind ,solar ,hydro and traditional generations including coal-fired power , nuclear power, which should be coordinated plan and development
• Heat from renewable energy especially solar heating system will feed into preheating system, to replace extraction steam partially and to save fuel.
• Renewable energy generation especially wind-solar power to feed the self-service power system of power plant and to save electricity.
4.Win-Win Development of Wind Power and
Large power Generation System
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● The variable renewable generation power can be
brought into the power plant, and be accommodated by
using the huge thermodynamic system and power grid
of power plant. Each type of power generation in the
large power generation system will be complementary,
as well as controllable and dispatched.
● Accommodate large-scale renewable energy safely
and economically via strong and intelligent modern
power grid. Promote renewable energy to be the
mainstream energy source in China.
Win-Win Development of Wind Power and
Large Power Generation System
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Renewable energy :
cleanness, low-Carbon, sustainability,
localization and normalization.
Smart grid:
compatibility of generation side, robustness of
transmission side, flexibility of demand side and
openness of technology updating.
Wind Power and Smart Grid
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Grid connection of different types of power sources.
Control related problems caused by intermittent power supply.
Source:REnergy Electric Tianjin Ltd.
Wind Power and Smart Grid
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The development of grid-friendly wind
farm as well as strong and flexible smart
grid will guarantee the development and
consumption of renewable energy in more
large scale and region, can make
renewable energy become the mainstream
energy.
Conclusion
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Thank You
For
Your attention
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