Development of Advanced Wind Turbines technically-adapted to Japanese Conditions such as Typhoons and Complex Terrain ドイツ バーデン・ヴュルテンベルグ州 日独科学シンポジウム 21世紀のエネルギー 21.May.2013, Tokyo Dr. Hikaru Matsumiya HIKARUWIND.LAB. Ltd. Guest researcher of National Institute of Advanced Industrial Science and Technology E-mail: [email protected]1
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Development of Advanced Wind Turbines technically-adapted to Japanese Conditions
such as Typhoons and Complex Terrain
ドイツ バーデン・ヴュルテンベルグ州
日独科学シンポジウム 21世紀のエネルギー 21.May.2013, Tokyo
Dr. Hikaru Matsumiya
HIKARUWIND.LAB. Ltd. Guest researcher of National Institute of Advanced Industrial Science and Technology
Affiliation 1974 ~ Mechanical Engineering Laboratory, MITI 2001 ~ National Institute of Advanced Industrial Science and Technology 2004 ~ Kyushu University (Professor) 2007 ~ HIKARUWIND.LAB,Ltd. Research on Wind Energy 1978 ~ Mostly National R&D Projects 1981 ~ 1982 Humboldt Research Fellowship (DFVLR, Stuttgart)
Nuclear Power Operation as of 14.May.2013 Only 2 units are in operation out of 50 units Nuclear contribution to electric power demands Before accident: about 300 TWh (30%) Today: about 15 TWh (1.5%) (Prediction)
Change in Electric Power Supply Structure after 2011.3.11 Accident at Fukushima Daiichi Nuclear Power Station
No. Units In Capacity In %
Total 50 46,148MW 100
In Operation 2 2,360MW 5.11
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Electric Power Supply Structure in Japan (Time History of
Annual Electric Power Generation) (100 GWh)
Geothermal and Renewables Hydropower Natural Gas Coal Oil Nuclear
Annu
al E
lect
ric P
ower
Gen
erat
ion
Financial Year (Data source: The Federation of Electric Power Companies of Japan)
Nuclear: 10 TWh in 2012 (estimation)
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No serious disruption due to the loss of Nuclear Power after 3.11 Self-conscious electricity conservation by citizens and companies have
come through the peak demands in last two summer times. The first possible step towards “zero option” of nuclear power has been
demonstrated. However, CO2 emission has slightly increased. It is because the electricity deficit from nuclear is made up balance mostly by thermal power. This runs counter to the moves toward prevention of global warming. Faster development of renewables are urgent issue.
Situation Today
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Fundamental review on national energy policy is ongoing.
Public opinion
National Energy Policy
Scenario Nuclear Renewables
Options under discussion by 2030
1 0 % 35 % 2 15 % 30 % 3 20 ~ 25 % 25 ~ 30 %
Old Basic Energy Plan by 2030 50 % 20 %
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Public Opinion for denuclearization (Asahi Newspaper 2013.Feb.17)
Opinion % breakdown %
Yes 59 Right now 13
By 2030 24 After 2030 22
No 18 No 18
No Response 11 No Response 11
Wind Energy Resource How much can wind contribute?
(A) Present (B) Potential (C) Best Scenario Ratio (C/A)
Onshore (MW) 2624 282,940 273,740 104
Offshore (MW) 25 1,572,620 141,080 5643
Total (MW) 2649 1,855,560 414,820 157
Contribution* (%) 0.5 - 78 156
Data source: The Ministry of the Environment
Wind has huge potential. If developed well, wind can solve both “Nuclear zero option” and Global Warming. Urgent issues are:
Technical developments to overcome severe external (natural and grid) conditions.
Reformation of social system (grid system, etc.) Clear decision making in energy policy
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* Contribution = Penetration
High Turbulence
Lightning Weak Grid
Complex Terrain
Main technical problems in wind power developments
Typhoon
Deep Water
Okinawa 1.9 GW
Max Capacity 201.3 GWGeneration 2006 821.1 TWhCapacity factor 46.60%
Severe Wind Conditions by Tropical Cyclones and Complex Terrain
Japan has severe External Conditions due to - tropical cyclones, - and complex terrain.
Measurement site
Summit of Mt. Nonobori
Complex Terrain
tropical cyclones
Source: Asahi Daily News
Tropical Cyclones ⇒ Higher Extreme Wind Speeds
Complex Terrain ⇒ Higher Turbulence Intensity Japan has a lot of experience of troubles, and R&D results/data related to tropical cyclones and complex terrain.
Statistical Investigation of Failures of WTGS
Statistics of Failure/Breakdown Causes
<FY2004 - FY2006>
Most significant causes of failure/breakdown: “Natural Environmental Causes” • Strong wind (e.g. Typhoon) • Lightning Turbulence (Failures caused by the turbulence may be difficult to be concluded?)
*from the Report of “Committee for Increase in Availability/Capacity Factor of Wind Turbine Generator System and Failure/Breakdown Investigation of Wind Turbine Generator System Subcommittee” by NEDO
Measured Data of High Turbulence in Japan A mass of measured wind speed data were analyzed in detail.
– A mass of wind speed data measured at total of 418 sites in Japan. – Measured wind speed data of 259 sites is adopted in this analysis (others were
excluded because expected capacity factor were low, and those are not suitable for wind farm project).
=> a mass of measurement sites is regarded as reflecting representative wind characteristics in Japan.
Sta
ndar
d de
viat
ion
of w
ind
spee
d, σ
1 [m
/s]
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Proposal to IEC Standard from Japanese National Committee
Class I II III T S
Vref [m/s] 50 42.5 37.5 57.5
Values specified by the designer
Vav [m/s] 10 8.5 7.5
10
8.5
7.5
Iref
H 0.18
a 0.16
b 0.14
c 0.12
For tropical cyclone regions; • New WT class for tropical cyclone regions (Class T) For high turbulence regions; • New turbulence category for high turbulence regions (Category H)
National R&D Projects in Japan NEDO (New Energy and Industrial Technology Development Organization)
under METI R&D of Next-Generation Wind Power Generation Technology (FY2008 - 2012)
- R&D of Basic and Applied Technologies - Natural Hazard Protection Technologies (Lightning Protection Measures)
Research and Development of Offshore Wind Power Generation Technology (FY2008 - 2013)
- Demonstration PJ at Choshi - Demonstration PJ at Hibikinada
• Huge potential market globally • Familiar energy resource to citizens like PV • More technical challenges are needed • Advanced social systems are needed
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Pow
er(W
), R
PM
, Win
d di
rect
ion
(deg
)
Win
d S
peed
(m
/s)
Time (MM/YY/HH/MM/SS)
RPM
Wind Direction
Max Wind speed: 47m/s
Power W
Wind speed
Small wind turbines generating under a typhoon attack
1-kW turbines at offshore site continued generating power under strong winds above 40 m/s. They went through by idling under the maximum gust of 47 m/s.
Some Technical Challenges
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National R&D activities
A National R&D Program supported Small Wind (2008-2012) Participation in IEA WIND Tasks » TASK 27 Support of IEC Standardization » IEC MT2 Development of Certification System for small wind turbines Field tests of small wind turbines CFD analysis of flows around a building Wind tunnel testing of VAWTs Development of Simplified equations for VAWTs
80 m
40 m600
m
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Brief review of recent small wind turbine Deployment
2006 Tsukuba wind turbine happening 2006 IEA TASK 11 Expert Meeting, “Challenges of Introducing Reliable Small Wind Turbines” (Stockholm) 2008 BWEA Standard 2009 AWEA Standard 2009 - IEA TASK 27, “Consumer Labeling of Small Wind Turbines” 2009 - IEC MT2 & IEA TASK 27 Liaison Meetings started 2011 “3.11” 2011 JSWTA Standard 2011 Class NK started certification 2012 FIT started (July)
With growth of the technology, small wind turbines are getting the potential distributed energy resources globally. This provides citizens the chance of producing electricity in distributed style.
A sloppy project in Tsukuba brought widely bad reputation
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Purpose: Create robust SWT market. Keep international cooperativeness. JSWTA (Japan Small Wind Turbine Association) develops Standard. Supported by METI, NEDO, Experts, Certification bodies. Key Words: Safety and Performance.
IEA TASK 27
IEC 61400-2 Ed.2 2004
IEC 61400-2 Ed.3 2009/JAN to revise
Wind Turbines Part.2 Design requirements for small wind turbines
Development and deployment of Small Wind Turbine Consumer Label
IEA Task 11
UK US, Canada
IEA/IEC Liaison Meeting
Japan’s SWT Certification System 2011 Start
2006 Expert meeting
Structure of National & International Activities in Small Wind
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Development of certification system
FIT requires certification of small wind turbines FIT authorizes JIS C 1400-2 (≈ JSWTA Standard) Certification Body NK (Nippon Kaiji Kyokai) uses JSWTA Standard
Test Organization and Test Site are not yet ready
Customer
FIT
Manufacturer
Certification Body
JSWTA Standa
rd
Test Organization
Neutral Commi
ttee
Test Site
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Feed-in-Tariff Price and Period
• The procurement price (FIT price) and the procurement period (period of the tariff) – Price for Wind 20 kW or more : 22 JPY/kWh (0.191 Euro/kWh, 0.255 USD/kWh) less than 20 kW : 55 JPY/kWh (0.479 Euro/kWh, 0.638 USD/kWh) – Period for Wind : 20 years
• Price will be reviewed every fiscal year based on technological innovations and decline in power generation costs. The reviewed price will be applied only to generation facilities that start supplying electricity from that fiscal year.