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China low-temperature wind turbine design and application
 

China low-temperature wind turbine design and application

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Presentation by Qiying Zhang, Guodian United Power, Dexin He, CWEA at Winterwind 2012. "China low-temperature wind turbine design and application"

Presentation by Qiying Zhang, Guodian United Power, Dexin He, CWEA at Winterwind 2012. "China low-temperature wind turbine design and application"

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    China low-temperature wind turbine design and application China low-temperature wind turbine design and application Presentation Transcript

    • China low-temperature wind turbine design and its application - Qiying Zhang Guodian United Power China - Professor He Dexin, CWEA 1
    • China low-temperature wind turbine design and its application• Status of Wind Power Development• Cold Climate in China• Technical solutions , effect and problems• Further actions 2
    • Status of Wind Power Development- In order to cope with climate change and reduce GHG emissions, theChinese government put forward the strategic objective that “Non-fossil energy will represent 15% of the energy by 2020.” -The government also has the target to reduce carbon emissions “40% to 45% by 2020 per GDP compared to the level of 2005.”-To achieve the goals, Chinese government began implementing “TheRenewable Energy Law “ in 2005 3
    • Status of Wind Power DevelopmentBy 2010, the newly installed capacity is 18.9 GW. The total installedcapacity is 44.7GW. China has ranked on top in the world.By the end of 2011, the installed capacity is above 60GW. The newlygrid-connected wind power in 2011 is 15.85GW and accumulatedamount is 47GW. 4
    • Status of Wind Power Development 50000 200% 40000 150% 30000 100% 20000 50% 10000 0 0% 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010Newly Installed Capacity 42 66 98 197 507 1288 3311 6154 13803 18928Total Installed Capacity 381 448 546 743 1250 2537 5848 12002 25805 44733Increasing Rate of NIC -46% 59% 48% 100% 158% 154% 157% 86% 124% 37%Increasing Rate of TIC 12% 17% 22% 36% 68% 103% 131% 105% 115% 73% 5
    • Status of Wind Power Development 2010 Annual Installed Market Share by Capacity 6
    • Status of Wind Power Development United Power 7
    • Status of Wind Power Development Multi-MW wind turbines Sinovel 6MW Guodian United Power 6MW Goldwind 2.5MWAt present, the main WEC type is 1.5-3MW,some 6MW machines hasbeen produced for prototype, and the even bigger wind turbine is underdevelopment. 8
    • Status of Wind Power DevelopmentPressure from Price Unit: Yuan RMB/kW Trend of WEC Price 9
    • Status of Wind Power DevelopmentThe ground test platform of WEC components 10
    • Status of Wind Power Development WEC should support the grid! Low voltage ride-through (LVRT) 11Source: China Electric Power Research Institute
    • Status of Wind Power Development 0.6Basic Research(973 and 863 0.5Program) 0.4“Aerodynamics Basic Cp 0.3Research for Large Scale 0.2 FVMWEC” 0.1 CFD EXP 0 2 4 6 8 10 12 14 Tip speed ratio 4mX3m 8mX6m/12 mX16m Φ3.2m Numerical simulation wind tunnel wind tunnel wind tunnel 12
    • Cold Climate in China Most area of North China is Cold Climate for wind turbine!http://www.cma.gov.cn/tqyb/v2/product/product2011.php http://news.86516.com/tupian/h005/h77/577481.shtml 13
    • Cold Climate in China At the same time, some of these areas is also Hot Climate for wind turbine!From: China Meteorological Administration 14
    • Cold Climate in China There are also sandstorms in these area every year!From: China Meteorological Administration 15
    • Cold Climate in China Wind Turbines will be installed the area from the sea level from 0 to 4,000 meters! 16
    • Technical solutions effect and problemsThe environment of the wind parks is normally thecombination of the above mentioned two factors or evenmore!Not only Cold Climate…, but... 17
    • Cold Climate in ChinaNorth West China - Cold Climate + Hot Climate + Sandstorm - air density is 1.401kg/m^3 in winter, and 1.088 kg/m^3 in summer ALaShankou(North West China) Temperature 1957-2011 1 2 3 4 5 6 7 8 9 10 11 12 50 40 Temperature ° C 30 20 10 0 -10 -20 -30 -40 average high temperature average low temperature extreme high temperature extreme low temperature 18
    • Cold Climate in ChinaNorth China - Cold Climate + Sandstorm - air density is 1.102kg/m^3 in winter, and 0.902kg/m^3 in summer HuiTengXiLe(North China) Temperature 1957-2008 1 2 3 4 5 6 7 8 9 10 11 12 40 30 20 Temperature ° C 10 0 -10 -20 -30 -40 average high temperature average low temperature extreme high temperature extreme low temperature 19
    • Cold Climate in ChinaNorth East China - Cold Climate - air density is 1.349kg/m^3 in winter, and 1.065kg/m^3 in summer HaiLaEr(North East China) Temperature 1957-2008 1 2 3 4 5 6 7 8 9 10 11 12 50 40 Temperature ° C 30 20 10 0 -10 -20 -30 -40 -50 -60 average high temperature average low temperature extreme high temperature extreme low temperature 20
    • Technical solutions effect and problems The environment of the wind parks is normally the combination of the above mentioned two factors or even more!The design of wind turbine suitable for all of these areas is a great challenge for the manufacturer in China. 21
    • 22 Different Control Different Control Platform Strategy Different Configuration Different Configuration Different Material Different Material Same structure design Same structure designeffect and problems Technical solutions Cost & Quality Cost & Quality Plateau climate Cold Climate Hot Climate Sandstorm
    • Technical solutions effect and problemsLoads - Winter and Summer – big difference altitude low air density high air density density wind park (m) temperature winter temperature summer difference North A La 300 -30°C 1.401 40°C 1.088 129%West China Shankou HuiNorth China 2100 -26°C 1.102 30°C 0.902 122% TengXiLe North Hai LaEr 612 -30°C 1.349 35°C 1.065 127% East China In China the cold area is in high altitude region, this compensate somewhat the increase of air density because of low temperature. But it is not always the case! Capability to design blade is very important! 23
    • Technical solutions effect and problemsMaterial - deep cooperation wind suppliers - deep cooperation with certification body Bearing Component Hub Main Frame HousingNormal Climate QT400-18AL Q345D QT400-18AL QT400-18AL QT400-18AL Cold Climate (impact test Q345E (impact test 12J at -40°C) 12J at -40°C) 24
    • Technical solutions effect and problemsComponents - All the components must be cold climate - Cold climate test at the suppliers - Gearbox cold climate start up test, generator cold climate test - Control System, Pitch System… Integrated Development is the solution, because 50% “know-how” is at supplier! 25
    • Technical solutions effect and problemsCooling System - standard wind turbine be afraid of hot in summer and afraid of cold in winter. - High altitude => low air density => lower cooling capacity => larger air cooler or limit the power - Sandstorm => Sealing of the Nacelle Cover => Filter System altitude dependent specific cooling capacity 0m 2.2 kW/K 800m 2.0 kW/K 2000m 1.6 kW/K 26
    • Technical solutions effect and problemsHeating System - standard wind turbine be afraid of hot in summer and afraid of cold in winter. - EFFICIENT COLD START UP => distributed heating equipments oil sump heating, heating jackets or hoses, winding heating => Supporting fan heating commissioning and maintenance(important) => good nacelle cover thermal isolation The time for Cold Start Up has big influence on productivity, so that it is a important parameter for Customer Satisfaction 27
    • Technical solutions effect and problemsSensors - ICE Detecting Sensor - Cold Climate Wind Speed Sensor and Wind Direction Sensor - Redundancy for wind Speed Sensor - Plastic or Metal - DEEP cooperation with supplier (Technology, Cost and Quality) Working Sensors is the precondition for load assumptions! 28
    • Technical solutions effect and problemsICE - Expensive Task - Experience new blade has less ice than old one => smooth? => clean? => maintained? - Ideas and Reality solutions, some patents, less industrial use 29
    • Technical solutions effect and problemsEffect and problems - newly installed wind turbines shows good availability - cooling system works also well in summer - cold start up works well, but time is relative long => productivity - duty blade or sandstorm => ice on the blade 30
    • Technical solutions effect and problemsEffect and problems - far from residential area => bad maintenance condition - far from consumer => relative weak grid => grid connection => more cold start up - cost pressure / technology => active de-ice system is not widely used => productivity 31
    • Further ActionThe Optimization should go further! - intelligent Control (big air density difference, cold climate and hot climate) - better maintenance - cheaper de-ice system - all kinds of measurement - cooling system for hub because of also hot climate -… -… 32
    • Further ActionIce Rain: Cold Climate in Normal Climate 33
    • Thank you for your attention! 34