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AApplied pplied RResearchesearch on on Offshore Oil FieldOffshore Oil Field Wind EnergyWind Energy
ZOU Hua
China National Offshore Oil Corporation
October 27, 2009
Northeast Asia Petroleum Forum 2009 IEEJ: November 2009
Outline
1、Introduction of applying offshore oil field
wind power
2、Applied demonstrative research of
offshore oil field wind power
3、Applicative prospect of offshore oil field
wind power
IEEJ: November 2009
As of 2008, capacity of the world's offshore wind power installed reach to nearly 1.473 million kilowatts, mainly concentrated in Europe
First, up to now, as limitations of wind power,offshore wind power are essentially grid-based, while off-grid wind power is small
Second,offshore oil production platforms need green power supply, reducing fossil energy consumption and emission, saving energy
1、Introduction of applying offshore oil field wind power
IEEJ: November 2009
The traditional view,when a large capacity of wind power access to the
grid, after a certain proportion (over 10%) ,would be some technical
issues,mainly including:
(1)Stability of power grid
When the capacity of wind power reach to a certain proportion of regional
power grid,stability of voltage and frequency,power quality may be affected
Likely to cause line voltage too low to enable the WTGs connected to the
grid, or owing to the frequently action of the WTG’s protection system and
the WTG being frequently disconnected from the grid
The grid operation maybe may be affected since the fluctuations of wind
speed may affect the power grid’s production
1、Introduction of applying offshore oil field wind power
IEEJ: November 2009
(2)Possibility of Wind Farm Control
Wind speed is random, making the production random fluctuant.
When wind farm production is lower than the load, other power
generators must response timely and contribute the grid a greater
production.
Wind speed is not controllable, the WTG’s production is also not easy
to control. The wind farm can not be as easy as conventional power
plants to achieve a reliable scheduling.
1、Introduction of applying offshore oil field wind power
IEEJ: November 2009
To eliminate the adverse effects on the stability of the grid caused by the
large-scale development of wind power ,Complementary systems of
various energy appear,mainly including:
Wind power - hydro ;
Wind Power - Solar Power ;
Compressed Air Energy Storage ;
Wind Power - Diesel Power ;
Wind power - hydrogen energy storage;
Wind power - fuel cell hybrid generating;
Wind power - Solar energy - fuel cell hybrid generating and so on.
Wind power - Solar energy - fuel
cell hybrid generating system
1、Introduction of applying offshore oil field wind power
IEEJ: November 2009
Smooth operation of power grid at offshore platform island
Concrete embodiment of CNOOC comprehensive energy company strategy
Explore new ways of wind power to supply offshore oil production
Technical Difficulties:
Wind power connection to the grid ;Selection and development of offshore WTG; The installation technology and equipment for offshore WTG.
1、Introduction of applying offshore oil field wind power
IEEJ: November 2009
Outline
1、Introduction of applying offshore oil field
wind power
2、Applied demonstrative research of
offshore oil field wind power
3、Applicative prospect of offshore oil field
wind power
IEEJ: November 2009
22、、AApplied pplied demonstrativedemonstrative researchresearch of offshore oil of offshore oil field wind powerfield wind power
5 km海底复
合电缆
1500kW风力发
电站
Offshore oil field wind power demonstrative project selection
Considerations:
Wind resource;
Oil Production;
impact;
Grid conditions;
Oil field load demand.
IEEJ: November 2009
Location :Bohai SZ36-1 oilfield
Capacity :1500kW
Distance to shore :70km
Hub height :57m
Water Depth :31.5m
Overview of Offshore oil field wind power demonstrative project
22、、AApplied pplied demonstrativedemonstrative researchresearch of offshore oil of offshore oil field wind powerfield wind power
IEEJ: November 2009
Annual average wind speed is 7.6m/s,Annual average wind power density
is 552.2w/m2,Maximum wind speed 23.3m/s,wind direction is stable
A small island grid system, of which the neutral point of the three-phase
three-wire grid is not grounded
Voltage:6.3kV/10.5kV/400V/3.3kV
4 sets of 6300V turbine generators
(10MW, 3 operation+1 spare)+2
emergency diesel
22、、AApplied pplied demonstrativedemonstrative researchresearch of offshore oil of offshore oil field wind powerfield wind power
Basic conditions of Offshore oil field wind power demonstrative project
IEEJ: November 2009
Considering the WTG’s impaction to the grid, the WTG’s capacity range:750-1500kW。
According to the maximum wind speed on the 50m-70m mean sea level, the IECⅡ and
above WTG will be selected.
Considering the demand of the oilfield
power grid status,reducing the impact
to the grid,the 1500kW Permanent
magnet direct-drive type wind turbine was
finally selected.
22、、AApplied pplied demonstrativedemonstrative researchresearch of offshore oil of offshore oil field wind powerfield wind power
Technology research of offshore oil filed wind power ——WTG selection
IEEJ: November 2009
液 压 泵
偏 航 机电 1
偏 航 机电 2
提 升 机
塔 架
P t 1 0 0
速风 仪
向风 标 境 温 度环偏 航 刹 车 叶 刹轮 车
T B 1 机发 电
控 制 柜
机 舱
平 台风 电 配 电 间
C E P 平 台
主 开 关 间
37*0.75mm2
信号电缆
2*0.4mm2
DP总线
专用屏
蔽电缆
操 作 站
光纤
偏 航 机电 3自 加 脂动
流 柜变
低 气 及 容压 电 电
机 控 制 柜舱
22、、AApplied pplied demonstrativedemonstrative researchresearch of offshore oil of offshore oil field wind powerfield wind power
Offshore oil field wind power demonstrative project——WTG control sys
IEEJ: November 2009
WTG—Turbine generators merge operation is the first time in China. The key
point to ensure the power quality and reliable operation is that if the GOV and
AVR regulation performance of the existing turbine generators can match the
WTG’s output power and voltage changes complementally.
WTG’s cut in and cut out, as well as fluctuations of wind power will affect the
power grid voltage and frequency, therefore, the response speed of AVR and
GOV are very important to maintaining the stability of the grid’s operation.
Two important indicators to evaluate the impact of wind power on the grid of
such a small isolated grid can be confirmed only through the actual running
22、、AApplied pplied demonstrativedemonstrative researchresearch of offshore oil of offshore oil field wind powerfield wind power
Technology research of offshore oil filed wind power ——Grid connection
IEEJ: November 2009
Electrical single line diagram system
22、、AApplied pplied demonstrativedemonstrative researchresearch of offshore oil of offshore oil field wind powerfield wind power
Technology research of offshore oil filed wind power ——Grid connection
IEEJ: November 2009
To observe the characters of WTG when connected to a small grid and forecast the
effect of actual operation on shore, the WTG and a set of 1100kW diesel generator were
connected together to carry out the onshore test,
Through test,the system can keep balance during
the transient impact and also the steady operation,
illustrates the feasibility of diesel engines and WTG;
the wind power penetration ratio broke the limit of
5% according to normal onshore wind farm
experience, even more than 20%。
22、、AApplied pplied demonstrativedemonstrative researchresearch of offshore oil of offshore oil field wind powerfield wind power
Offshore oil field wind power demonstrative project——On shore test of WTG-Turbine generator merge operation
IEEJ: November 2009
System Diagram
22、、AApplied pplied demonstrativedemonstrative researchresearch of offshore oil of offshore oil field wind energyfield wind energy
Offshore oil field wind power demonstrative project——On shore test of WTG-Turbine generator merge operation
IEEJ: November 2009
to simulate better the operation of offshore producing platforms, we
conducted a diesel and wind hybrid power systems simulation.
Use non-real-time simulation tool PSCAD/ EMTDC and real-time
simulation tool RTDS/RSCAD to simulate and study the peration of
platforms merged with wind power.
Simulation results show:it is feasible to introducing wind power
into power grid of offshore oil platforms, when the platform power
grid operates stably, the 1500kW WTG cut-in, cut-out and
emergently shutdown, the power grid can also be stable.
22、、AApplied pplied demonstrativedemonstrative researchresearch of offshore oil of offshore oil field wind energyfield wind energy
Offshore oil field wind power demonstrative project——Simulation of WTG-Turbine generator merge operation
IEEJ: November 2009
RTDS simulation of wind turbine putting into operation
RTDS simulation of all
cut off process
22、、AApplied pplied demonstrativedemonstrative researchresearch of offshore oil of offshore oil field wind energyfield wind energy
Offshore oil field wind power demonstrative project——Simulation of WTG-Turbine generator merge operation
IEEJ: November 2009
After the WTG’s pre-commissioning completed, it was only connected with one turbine generator; after it succeeded, the test was conducted gradually; at last, the power grid was configured by WTG and all the turbine generators, to supply the oil platform’s load.
Results show: when the oil platform power grid operates stably, the 1500kW WTG cut-in, cut-out and emergently shutdown, the power grid can also be stable.
The maximum wind power capacity in the SZ36-1 oil platform power grid is 3 sets of 1.5MW wind turbine
22、、AApplied pplied demonstrativedemonstrative researchresearch of offshore oil of offshore oil field wind energyfield wind energy
Offshore oil field wind power demonstrative project——offshore test of WTG-Turbine generator merge operation
IEEJ: November 2009
风电机组连续试运行
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t
平均风速(m/s)
最大风速(m/s)
平均功率(100kW)
最大功率(100kW)
Trend Chart of wind turbine output power change with wind speed
22、、AApplied pplied demonstrativedemonstrative researchresearch of offshore oil of offshore oil field wind energyfield wind energy
Offshore oil field wind power demonstrative project——offshore test of WTG-Turbine generator merge operation
IEEJ: November 2009
This project was successfully connected
to the grid on November 8, 2007,and
there was no negative affection ;
This unit passed performance test on
January 11, 2008 ;
Up to now,the project operated
stably ,and total production reaches 6
million kWh after several trials;
Energy-saving and emission
reduction:5300 tons of CO2
22、、AApplied pplied demonstrativedemonstrative researchresearch of offshore oil of offshore oil field wind energyfield wind energy
Offshore oil field wind power demonstrative project——grid connection and operation
IEEJ: November 2009
Completed a merge system design and stability analysis, mathematical
simulation model.
Successfully built a physical simulation system.
Successful implement the WTG connected with a oilfield weak power grid.
diagram of physical simulation system
1500kWWTG
690V BUS
690V/400V Transformer
400VBUS
1100kW Diesel tur.
2000kWLoad
22、、AApplied pplied demonstrativedemonstrative researchresearch of offshore oil of offshore oil field wind energyfield wind energy
Offshore oil field wind power demonstrative project——results
IEEJ: November 2009
In addition, we also carried out the following research:
Offshore wind turbine foundation infrastructure Model;
Offshore wind turbine Installation/Transportation technology;
Research of WTG adaptability to the offshore environment;
Research of Operation and Maintenance Management ;
22、、AApplied pplied demonstrativedemonstrative researchresearch of offshore oil of offshore oil field wind energyfield wind energy
IEEJ: November 2009
Outline
1、Introduction of applying offshore oil field
wind power
2、Applied demonstrative research of
offshore oil field wind power
3、Applicative prospect of offshore oil field
wind power
IEEJ: November 2009
Up to now,oilfield grid electric indicators reach to requirements,
WTG operates safely and smoothly. Achieved improvement of a variety of power sources in the offshore platform, and promote rich experience for future wind energy utilization project.
There are thousands of oil platforms completed and under construction in the world ,If we can reduce fuel consumption effectively or provide other forms of new energy,it will greatly reduce production costs and promote energy-saving and emission reduction activities.
33、、Applicative prospect of offshore oil field wind powerApplicative prospect of offshore oil field wind power
IEEJ: November 2009
CNOOC is developing a stable set of independent wind-power and battery combination power systems,and applied to offshore production platforms, explore the feasibility of making wind power as a additional power to platform ,explore roads of effective using of the rich wind energy resources at sea and alternating part or all oilfield fuel some or all of the alternative fuels oil in the future
33、、Applicative prospect of offshore oil field wind powerApplicative prospect of offshore oil field wind power
IEEJ: November 2009
At present, the system has entered a substantial research
and development stage, and has achieved good results.
风电机组
(MW级)
变压单
元
负荷配送
单元
整流/逆
变单元
蓄能电
池
负载
风机控制系统 应急电源系统独立电源控
制系统
Diagram of an independent wind power and battery
combination power supply system
33、、Applicative prospect of offshore oil field wind powerApplicative prospect of offshore oil field wind power
IEEJ: November 2009
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