Wind Energy in Cold Climate - experiences from Sweden and the world!

Transcription

1 Wind Energy in Cold Climate - experiences from Sweden and the world! Winterwind 2015 in Piteå Eva Sjögren Sales Manager Sales Sweden

2 Content 1: ENERCON 1.1 Financial stability 1.2 Global installed capacity 1.3 Global experience 2: Functional descriptions: 2.1 Cold Climate Package 2.2 Hot air system 2.3 Nominal power of the RBHS Ice detection 2.6 Power consumption management 3: Verifications: Icing test sites - worldwide Icing classifications from IEA 2

3 1.1 ENERCON: financial stability 3

4 1.2 ENERCON global installed capacity ENERCON has installed over MW worldwide In Sweden: 623 turbines (975 MW) We are active on many markets where special technology for de-icing and cold climate is needed/required For instance, Scandinavia, Central Europe (Germany, Switzerland, Czech Republic), Canada, Antarctica We have gained lots of experience (together with Deutsche Windguard and Meteotest) from different sites with different icing conditions 4

5 1.3 ENERCON Cold Climate experience on a global level Andermatt, Switzerland Antarctica

6 2.1 ENERCON Cold Climate Package 6

7 2.2 Hot air system» heating elements heats up the air to a maximum of 72 C» a fan distributes the heated air inside the blade 7

8 2.3 Nominal power of the RBHS WEC type Nominal power Rated power (per blade) E-44, E-48, E-53 15,2 kw 900, 800, 800 kw E-70 E4 22,7 kw 2/2,3 MW E kw 2/2,3 MW E kw 2,3/3 MW E ,3 kw 3 MW E ,3 kw 3 MW 8

9 2.4 Ice detection system functional principle Red graph Power curve method (below rated power) Deviations from the power curve detected and registered as ice on the rotor blades Blue graph Blade angle method (at rated power) Deviations from the blade angle compared to the wind speed detected and registered as ice 9

10 2.5 Ice detection system proofed by TÜV Nord External export report from TÜV Nord available Functionality valuation of ice detection system to prevent ice throw 10

11 2.6 Power consumption management SCADA software limiting maximum power consumption RBHS in wind farm Target: prevent RBHS consumption out of electrical grid (expensive) Advantages: Control and limit peak power consumption Avoid associated penalties from grid operator (e. g. consumption for RBHS during icing period and lack of wind) Procedure: cascaded switch on of single turbines according to available wind farm internal power production 11

12 3.1 Krystofovy Hamry E-82 with 78m HH Wind met mast (WMM) WEC 09: no RBHS WEC 10: RBHS during operation Feb 2014 WMM WEC 11: RBHS at standstill DWG Report: PP11009_Validation_Blade_Heating_System_Enercon 12

13 3.2 Krystofovy Hamry E-82 with 78m HH 3500 Energy yield Krystofovy Hamry (CZ) winter 2013/14 ( ) ~ 10% of AEP ~ 4,5% of AEP ~ 3% of AEP energy [MWh] Consumption RBHS [MWh] Icing losses [MWh] Produced energy yield [MWh] Topography and wake were taken into account in the model 0 no RBHS RBHS at standstill RBHS during operation 13

14 3.3 Icing test sites Krystofovy Hamry, CZ 3% 10% AEP 2013 Icing losses (incl. RBHS consumption for heated WECs) AEP / MWh unheated heated 14

15 3.4 Icing test sites Dragaliden, SE AEP / MWh % 3% 4000 unheated heated Krystofovy Hamry, CZ 3% 10% AEP 2013 Icing losses (incl. RBHS consumption for heated WECs) AEP / MWh unheated heated 15

16 3.5 Icing test sites Dragaliden, SE AEP / MWh % 3% 5500 Molau, DE 4000 unheated heated AEP 2013 Icing losses (incl. RBHS consumption for heated WECs) AEP / MWh % 0,3% unheated heated AEP / MWh Krystofovy Hamry, CZ 3% 10% 3000 unheated heated 16

17 3.6 Icing test sites Dragaliden, SE % 3% 7000 Nuttby, CA AEP / MWh AEP / MWh % 0,5% unheated heated AEP 2013 Icing losses (incl. RBHS consumption for heated WECs) AEP / MWh Molau, DE 4% 0,3% unheated heated AEP / MWh unheated Krystofovy Hamry, CZ 3% 10% 3000 unheated heated heated Dokument-ID: 17

18 3.7 Icing classifications from IEA with influence of EC RBHS IEA ice class Meteorological icing Instrumental icing Production loss (WEC without RBHS) Production loss (WEC with RBHS, consumption incl.) Validation no. % of year % of year % of AEP % of AEP Site 5 >10 >20 >20 > , ,5-3 Krystofovy Hamry (CZ)* Dragaliden (SE)* Gabrielsberget (SE) St. Brais (CH) Nuttby (CA) 2 0, , ,5 Molau (DE)* 1 0-0,5 <1,5 0-0,5 <0,5 - iea wind: expert group study 13. wind energy projects in cold climate 1. edition 2011 Performance of ENERCON WECs *Proved by Meteotest 18

19 3.8 Icing classifications from IEA with influence of EC RBHS IEA ice class Meteorological icing Instrumental icing Production loss (WEC without RBHS) Production loss (WEC with RBHS, consumption incl.) Validation no. % of year % of year % of AEP % of AEP Site 5 >10 >20 >20 > , ,5-3 Krystofovy Hamry (CZ)* Dragaliden (SE)* Gabrielsberget (SE) St. Brais (CH) Nuttby (CA) 2 0, , ,5 Molau (DE)* 1 0-0,5 <1,5 0-0,5 <0,5 - iea wind: expert group study 13. wind energy projects in cold climate 1. edition 2011 Performance of ENERCON WECs *Proved by Meteotest 19

20 Summary More than 15 years experience of the RBHS! Well-proven ice detection system using the power curve. The Enercon RBHS uses a hot air system, heating the turbine blades from the inside. A newly developed Power consumption management limits the power consumption of the wind park, in order to ensure net stability and avoid unnecessary fees. With the Cold Climate Package, the technology of the turbines are adjusted to survive harsher weather. The production gain due to the Enercon RBHS has been calculated using several sites, with different intensities of ice, leading to the extension of the IEA icing table with production losses using Enercon turbines with RBHS installed. 20

21 Thank you for attending the study trip to Markbygden/Dragaliden! Picture: Jonas Lundmark 21

22 Thanks a lot for your attention! Eva Sjögren Sales Sweden eva.sjoegren@enercon.de Publisher: ENERCON GmbH Dreekamp Aurich Germany Phone: Fax: Copyright: ENERCON GmbH. Any reproduction, distribution and utilisation of this document as well as the communication of its contents to third parties without express authorisation is prohibited. Violators will be held liable for monetary damages. All rights reserved in the event of the grant of a patent, utility model or design. Content subject to change: ENERCON GmbH reserves the right to change, improve and expand this document and the subject matter described herein at any time without prior notice. 22