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Mikael Lindmark
CEO and PM




11-01-18
Blaiken Large-scale wind power in cold climate

  Photo montage
11-01-18
Agenda

BlaikenVind AB
General site information
General project information
Climate conditions
Risk assessment due to cold climate
    Operation and maintainance
    Cable damage
Questions




12-02-07
BlaikenVind AB

Two leading powers in the industry
join forces

Skellefteå kraft

Fortum
Leading development in the field of
renewable energy




12-02-07
General site information

The windfarm is situated in Northen
Sweden in the border between
Storuman and Sorsele municipalies




12-02-07
Site information

High-ground area
           -    Sub-mountainous area
                (lågfjällsområde)
           -    Wind Power Area (WPA)
                640 – 747 meter above sea
                level




12-02-07
Site information

Terrain
           -    Very flat area
           -    No significant variations or
                gradients in the terrain
           -    Low vegetation in the Wind
                power area




12-02-07
Why Blaiken?

Good wind conditions

Average wind speed: 8 m/s

Best wind conditions during
autumn and vinter




                              Estimated production




12-02-07
Why Blaiken?

Existing national grid 400kV
(Juktan hydro-power plant)
Existing infrastructure
Mining activites previously in the
area




12-02-07
Environment
The area is classified as an national
interest for:
•  Windpower produktion
•  Raindeer management
•  Environmental protection

Environmental-permission

Monitoring programme

Annual report to the County
Administrative Board (Länsstyrelsen)




12-02-07
Environment
No turbines in the wet lands
(classification 1 and 2)
           -    Minimize the passages of roads
                through wet lands and streams
           -    Minimum 100 m from bigger
                lakes

Consultations with the Sami
community

           -    minimize the effects of the
                raindeer management




12-02-07
Project information

Project duration: 2010-2015

90 Wind Turbines (WTGs)

3 Batches

30 WTGs per Batch
700 GWh/year equivalent to
150 000 apartments




12-02-07
Graphical extent of the wind farm




12-02-07
Project information
Nordex N100 IECII – 2,5 MW
           -    Mast height 100 m
           -    Rotor diameter 100 m
           -    Total hight 150 m




12-02-07
Project information

Servicebuilding: 500 m2
           –  Staff room
           –  Workshop equipment
           –  Garage for service vehicles
           –  Storage area for spare parts




12-02-07
Project information

Switchgear:
           –  Indoor 36 kV
           –  Outdoor 400 kV




12-02-07
Project information

Two main transformers 36kV/400kV
     (both will be installed before
     commissioning of the Wind Turbines
     to minimize risks)
Internal 36 kV cable network: 150 000 m
Redundant fiberoptic net




12-02-07
Project information

Rock ancored foundations
Gravitation foundations
Internal roads: 60 km




12-02-07
Climate conditions
Temperatures 20070830 – 20100228

           -    Lowest temp -27, 63 ºC
           -    Highest temp. + 25, 51 ºC
           -    300 h below -20 ºC
           -    42 h -25 ºC


Icing
           -    Icing expected for a period of
                about 5 months
           -    The area can be affected by
                heavy icing in short periods




12-02-07
Windpower
in cold climate

Climate-adapted engineering
           -  Heated systems (ex. gearbox)
Anti-icing system
Operation and maintenance - risks




12-02-07
Risks and problems
during operation and
maintenance in cold climate
Safe access
           -    Ice throw
           -    Falling snow and ice
           -    Cold climate

Accessibility – choice of service vehicle
Road maintenance – snow clearance
Communication – mobile coverage
Repairs to cable damage




12-02-07
Ice throw
Risks for third party in
the area:
•    Hunters
•    Snowmobile riders
•    Berry pickers
•    Raindeer herders


The hazard area for ice
throw will be signposted


Excisting snowmobile trails will be
moved outside the risk area

     12-02-07
Ice throw
Health and safety procedures for personnel
and visitors
           –  Health and safety information for all
           –  Risk assessment prior to access in
              winter
           –  Operation centre informed on arrival
              and when leaving the wind farm
           –  Wind turbine shut down before entering
              the hazard area (300 m)
           –  Visitors only if authorised by wind farm
              manager
           –  However, wheeled or tracked vehicles
              with roof can drive through the wind
              farm without any need to shut down the
              wind farm
           –  Hard hat




12-02-07
Falling snow or ice

Risk of falling snow and ice on access
           –  Personal injury
           –  Risk of blocked exit

Health and safety procedures
           –  Risk assessment prior to access
           –  Operation centre informed
           –  Wind turbine shut down before and
              during access
           –  Hard hat
           –  Mobile phone or two-way radio




12-02-07
Snow clearance
Procurement of maintenance
contractor is ongoing
Choice of snow clearance method
           –  Wheel loaders on site
           –  Snow-thrower
           –  Apex plow (spetsplog)
           –  Excavator
Snow poles-reinforced and
extended
Risk of cable damage
No snow clearance in the switch
gear area



12-02-07
Communications

Mobile coverage for staff safety
(local reinforcement of the signals)


Alternative communications
system




12-02-07
Consequences of
cable damage in winter
Expensive repairs and reduced
income due to downtimes (driftavbrott)
           –  Locate the damage

           –  Snow clearance

           –  Ice-melting and excavation
           –  Putting up assembly tent

           –  Splicing and testing

           –  Reinstatement with frost free
              backfill materials

Risk of damage to adjacent cables




12-02-07
Risk for cable damage

Handling cable drums
           –  Risk of sheathing damage
Cable laying
           –  Excavation of cable trench
                •  rock or boulders in the
                   trench
           –  Material requirements
                •  Trench bed
                •  Fill material

Risk also of frost damage if the work
is incorrectly performed




12-02-07
Reduce the risk
of cable damage
BlaikenVind requirements:

           –  Training to Swedish BB3 level
              for cable layer staff and
              excavator drivers

Contractors carry out own inspections
BVAB engages inspectors and works
managers




12-02-07
Measuring equipment


Low temperatures and icy conditions
affect the measuring equipment




                                      Bowl-pox anemometer out of order




12-02-07
Visit us on site or at www.blaikenvind.se




12-02-07
Webcam at www.blaikenvind.se




12-02-07
Any questions?




12-02-07
Thank you!




12-02-07

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Large scale wind power in cold climate

  • 2. Blaiken Large-scale wind power in cold climate Photo montage 11-01-18
  • 3. Agenda BlaikenVind AB General site information General project information Climate conditions Risk assessment due to cold climate Operation and maintainance Cable damage Questions 12-02-07
  • 4. BlaikenVind AB Two leading powers in the industry join forces Skellefteå kraft Fortum Leading development in the field of renewable energy 12-02-07
  • 5. General site information The windfarm is situated in Northen Sweden in the border between Storuman and Sorsele municipalies 12-02-07
  • 6. Site information High-ground area -  Sub-mountainous area (lågfjällsområde) -  Wind Power Area (WPA) 640 – 747 meter above sea level 12-02-07
  • 7. Site information Terrain -  Very flat area -  No significant variations or gradients in the terrain -  Low vegetation in the Wind power area 12-02-07
  • 8. Why Blaiken? Good wind conditions Average wind speed: 8 m/s Best wind conditions during autumn and vinter Estimated production 12-02-07
  • 9. Why Blaiken? Existing national grid 400kV (Juktan hydro-power plant) Existing infrastructure Mining activites previously in the area 12-02-07
  • 10. Environment The area is classified as an national interest for: •  Windpower produktion •  Raindeer management •  Environmental protection Environmental-permission Monitoring programme Annual report to the County Administrative Board (Länsstyrelsen) 12-02-07
  • 11. Environment No turbines in the wet lands (classification 1 and 2) -  Minimize the passages of roads through wet lands and streams -  Minimum 100 m from bigger lakes Consultations with the Sami community -  minimize the effects of the raindeer management 12-02-07
  • 12. Project information Project duration: 2010-2015 90 Wind Turbines (WTGs) 3 Batches 30 WTGs per Batch 700 GWh/year equivalent to 150 000 apartments 12-02-07
  • 13. Graphical extent of the wind farm 12-02-07
  • 14. Project information Nordex N100 IECII – 2,5 MW -  Mast height 100 m -  Rotor diameter 100 m -  Total hight 150 m 12-02-07
  • 15. Project information Servicebuilding: 500 m2 –  Staff room –  Workshop equipment –  Garage for service vehicles –  Storage area for spare parts 12-02-07
  • 16. Project information Switchgear: –  Indoor 36 kV –  Outdoor 400 kV 12-02-07
  • 17. Project information Two main transformers 36kV/400kV (both will be installed before commissioning of the Wind Turbines to minimize risks) Internal 36 kV cable network: 150 000 m Redundant fiberoptic net 12-02-07
  • 18. Project information Rock ancored foundations Gravitation foundations Internal roads: 60 km 12-02-07
  • 19. Climate conditions Temperatures 20070830 – 20100228 -  Lowest temp -27, 63 ºC -  Highest temp. + 25, 51 ºC -  300 h below -20 ºC -  42 h -25 ºC Icing -  Icing expected for a period of about 5 months -  The area can be affected by heavy icing in short periods 12-02-07
  • 20. Windpower in cold climate Climate-adapted engineering -  Heated systems (ex. gearbox) Anti-icing system Operation and maintenance - risks 12-02-07
  • 21. Risks and problems during operation and maintenance in cold climate Safe access -  Ice throw -  Falling snow and ice -  Cold climate Accessibility – choice of service vehicle Road maintenance – snow clearance Communication – mobile coverage Repairs to cable damage 12-02-07
  • 22. Ice throw Risks for third party in the area: •  Hunters •  Snowmobile riders •  Berry pickers •  Raindeer herders The hazard area for ice throw will be signposted Excisting snowmobile trails will be moved outside the risk area 12-02-07
  • 23. Ice throw Health and safety procedures for personnel and visitors –  Health and safety information for all –  Risk assessment prior to access in winter –  Operation centre informed on arrival and when leaving the wind farm –  Wind turbine shut down before entering the hazard area (300 m) –  Visitors only if authorised by wind farm manager –  However, wheeled or tracked vehicles with roof can drive through the wind farm without any need to shut down the wind farm –  Hard hat 12-02-07
  • 24. Falling snow or ice Risk of falling snow and ice on access –  Personal injury –  Risk of blocked exit Health and safety procedures –  Risk assessment prior to access –  Operation centre informed –  Wind turbine shut down before and during access –  Hard hat –  Mobile phone or two-way radio 12-02-07
  • 25. Snow clearance Procurement of maintenance contractor is ongoing Choice of snow clearance method –  Wheel loaders on site –  Snow-thrower –  Apex plow (spetsplog) –  Excavator Snow poles-reinforced and extended Risk of cable damage No snow clearance in the switch gear area 12-02-07
  • 26. Communications Mobile coverage for staff safety (local reinforcement of the signals) Alternative communications system 12-02-07
  • 27. Consequences of cable damage in winter Expensive repairs and reduced income due to downtimes (driftavbrott) –  Locate the damage –  Snow clearance –  Ice-melting and excavation –  Putting up assembly tent –  Splicing and testing –  Reinstatement with frost free backfill materials Risk of damage to adjacent cables 12-02-07
  • 28. Risk for cable damage Handling cable drums –  Risk of sheathing damage Cable laying –  Excavation of cable trench •  rock or boulders in the trench –  Material requirements •  Trench bed •  Fill material Risk also of frost damage if the work is incorrectly performed 12-02-07
  • 29. Reduce the risk of cable damage BlaikenVind requirements: –  Training to Swedish BB3 level for cable layer staff and excavator drivers Contractors carry out own inspections BVAB engages inspectors and works managers 12-02-07
  • 30. Measuring equipment Low temperatures and icy conditions affect the measuring equipment Bowl-pox anemometer out of order 12-02-07
  • 31. Visit us on site or at www.blaikenvind.se 12-02-07