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Overview on offshore grid development: four offshore grid scenarios for Baltic Sea
Nicolaos A. Cutululis
TWG - InteGRID concept
Gdansk, 4th October 2016
4 October 2016DTU Wind Energy, Technical University of Denmark
Outline
• Offshore wind development
• Offshore grid development
• Offshore grid design in the Baltic Sea
2
4 October 2016DTU Wind Energy, Technical University of Denmark
Annual and Cumulative Wind Energy Development, World Markets: 1983-2014
3
0
50,000
100,000
150,000
200,000
250,000
300,000
350,000
400,000
0
9,000
18,000
27,000
36,000
45,000
54,000
1983 1990 1995 2000 2005 2011
Cu
mu
lati
ve M
W
MW
pe
r year
Year
Installed Wind Power in the World- Annual and Cumulative -
Installed MW in year Accu. MW
Source: BTM Consult - A Part of Navigant - March 2015Source: Navigant Research, March 2015
4 October 2016DTU Wind Energy, Technical University of Denmark
Net changes in EU installed power capacity 1995-2015?
4
Source: Wind in Power, 2015 European Statistics, EWEA
4 October 2016DTU Wind Energy, Technical University of Denmark
Offshore wind development
5
2001
Onshore:99%
Offshore:1%
2015
Onshore:76%
Offshore:24%
Source: Wind in Power, 2015 European Statistics, EWEA
4 October 2016DTU Wind Energy, Technical University of Denmark
Offshore wind in 2015
7
Source: EWEA
4 October 2016DTU Wind Energy, Technical University of Denmark
Offshore wind in Baltic
8
Possible 2030 ScenarioPresent Scenario
4 October 2016DTU Wind Energy, Technical University of Denmark
Offshore grid design strategies - NSCOGI
9
4 October 2016DTU Wind Energy, Technical University of Denmark
ENTSO-E TYNDP 2014
10
Source: tyndp.entsoe.eu/
2014-2018 2019-2030
4 October 2016DTU Wind Energy, Technical University of Denmark
Offshore grid scenarios - Baltic
11
October 2011
4 October 2016DTU Wind Energy, Technical University of Denmark
Offshore grid scenarios – Baltic
12
OffshoreDC project:
Niina Helistö, Vin Cent Tai, Electricity market and power flow impact of wind power and DC grids in the Baltic Sea, December 2015
• The aim of this study is to identify electricity market and power system impacts of offshore wind power and different offshore grid designs, ranging from single radial connections from each offshore wind power plant to a fully meshed offshore transmission grid.
• The purpose is to analyse the offshore grids themselves with wind power, but also the impact of offshore grids on the main power grids onshore, and define the operating frames the onshore power systems set for offshore grid options.
• The overall objective of the feasibility studies is to build more cost-efficient offshore wind power plants and interconnectors
4 October 2016DTU Wind Energy, Technical University of Denmark
OffshoreDC study – Baltic sea
13
- Based on EU FP7 TWENTIES project scenarios for wind power development
- 27 GW of wind power by 2030
- Countries: Denmark, Norway, Sweden, Finland,Estonia, Latvia, Lithuania, Poland and Germany
4 October 2016DTU Wind Energy, Technical University of Denmark
OffshoreDC study – Baltic sea
14
• BALMOREL - Generation investment planning model
• Power balance computation as determined by a unit commitment and economic dispatch model WILMAR Join Market Model (WILMAR JMM) and
• Network analysis performed with PSS®E.
4 October 2016DTU Wind Energy, Technical University of Denmark
OffshoreDC study – Baltic sea
15
• Four topologies:
– Limited
– Onshore
– Offshore
– Mix
4 October 2016DTU Wind Energy, Technical University of Denmark
OffshoreDC study – Baltic sea
16
4 October 2016DTU Wind Energy, Technical University of Denmark
OffshoreDC study – Baltic sea
17
4 October 2016DTU Wind Energy, Technical University of Denmark
Summary
18
• Offshore wind power development is at an early stage
• Offshore transmission (grids) is being built!
• Any offshore grid design will depend a lot on the scenarios considered
• Baltic Sea has the potential to be the next “North Sea” in terms of offshore wind and grids development