Upload
posy
View
37
Download
0
Tags:
Embed Size (px)
DESCRIPTION
Integration of the German Offshore Wind Power Potential into the Electricity Supply System. B. Lange, Ü. Cali, R. Jursa, F. Schlögl, M. Wolff, K. Rohrig. Overview. Introduction Online Monitoring and Wind Power Forecasting Future challenges Wind Farm Cluster Control Conclusion. - PowerPoint PPT Presentation
Citation preview
Integration of the German Offshore Wind Power Potential into the Electricity Supply System
B. Lange, Ü. Cali, R. Jursa, F. Schlögl, M. Wolff, K. Rohrig
OWEMES 2006 - 2
Introduction
Online Monitoring and Wind Power Forecasting
Future challenges
Wind Farm Cluster Control
Conclusion
Overview
OWEMES 2006 - 3
Wind Energy in Germany (12/05)
Onshore:18300 MW17400 WEA
Offshore:0
50 % of installed capacity in Europe and 30 % world wide
Introduction
OWEMES 2006 - 4
0
10000
20000
30000
40000
50000
60000
0 24 48 72 96 120 144
Hours
Po
we
r [M
W]
load w/o wind
Typical load profile in Germany 1.-7. May
yesterday: conventional generation = load
Introduction
OWEMES 2006 - 5
0
10000
20000
30000
40000
50000
60000
0 24 48 72 96 120 144
Hours
Po
we
r [M
W]
load w/o wind
load incl. wind
Load profile & wind generation today
today: conventional generation = load – wind generation
Introduction
OWEMES 2006 - 6
Online Monitoring and Wind Power Forecasting
Representative wind farms
(sub-stations)
E.ON: 59 sites 1912 MW
VE-T: 17 sites 499 MW
RWE: 16 sites 446 MW
Online calculation of wind generation
Numerical weather prediction (DWD)
Short- and medium-term forecast with help of artificial neural networks
Wind Power Management System
WPMS
OWEMES 2006 - 7
Wind Power Management System (WPMS) In operation at: E.ON Netz, Vattenfall Europe Transmission, RWE Transportnetz Strom, Currently implemented at: EnBW TransportnetzeBasis for horizontal exchange of wind power (EEG §14)
Online monitoring and Wind Power Forecasting
OWEMES 2006 - 8
I/Ro 1/2002
OWEMES 2006 - 9
Online Monitoring and Wind Power Forecasting
Development of forecasting error of the WPMS for one TSO
Introduction of operational forecasting decreased the need for balancing power
Improvement in forecasting similar to capacity increase
OWEMES 2006 - 10
Further growth & planned / approved offshore projects
Future Challenges
Planned offshore wind farms (2020):
North Sea (AWZ) 18.600 MWBaltic Sea (AWZ) 1.700 MW
OWEMES 2006 - 11
0
10000
20000
30000
40000
50000
60000
0 24 48 72 96 120 144
Hours
Po
we
r [M
W]
load w/o wind
load incl. wind
Load profile & wind generation 2015
tomorrow: konv. generation = load – wind generation = 0 !!
Future Challenges
OWEMES 2006 - 12
Future Challenges
Requires innovative management strategies for wind turbines, wind
farms and wind farm clusters
Key issues for future grid integration in Germany
balancing
transport and congestion management
grid management
grid security
frequency control
OWEMES 2006 - 13
Wind Farm Cluster Control
Wind Farm Cluster Control
Aggregation of on- and offshore wind farms
• allows innovative control strategies
• Enables TSOs to control a large number of turbines
• Allows control of wind farms with different capabilities
OWEMES 2006 - 14
Wind Farm Cluster Control
OWEMES 2006 - 15
Wind Farm Cluster Control
OWEMES 2006 - 16
Wind Farm Cluster Control
Innovative grid management strategies
• limitation of power output
• reactive power supply and voltage control
• provision of balancing power
• generation according to schedule
• limitation of power output gradients
OWEMES 2006 - 17
Index
0
20
40
60
80
100
120
140
160
180
23:15 01:15 03:15 05:15 07:15 09:15 11:15 13:15 15:15
Time
Po
wer
[M
W]
cluster
cluster new
wind farm
wind farm control
Wind Farm Cluster Control
Limitation of power output gradients
OWEMES 2006 - 18
Reserve power supply (500 MW)
0
1000
2000
3000
4000
5000
6000
06.10.2003 07.10.2003 08.10.2003 09.10.2003 10.10.2003
Time
Po
wer
[M
W]
Reserve PowerReduced Power
Wind Farm Cluster Control
OWEMES 2006 - 19
Guaranteed power supply
Wind Farm Cluster Control
0
1000
2000
3000
4000
5000
6000
09.10.2003 10.10.2003 11.10.2003 12.10.2003
Time
Po
wer
[M
W]
perr
nerr
Online
Forecast
guaranteed power supply
OWEMES 2006 - 20
Conclusion
Today the main task for wind power integration is power balancing
Solution: Online monitoring and exchange Wind power forecasting
Higher penetration leads to new challanges Transport Grid management and security
Wind power needs capabilities similar to conventional power plants
=> Wind Farm Cluster Control