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

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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

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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

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Source: EWEA

4 October 2016DTU Wind Energy, Technical University of Denmark

Offshore wind in Baltic

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Possible 2030 ScenarioPresent Scenario

4 October 2016DTU Wind Energy, Technical University of Denmark

Offshore grid design strategies - NSCOGI

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4 October 2016DTU Wind Energy, Technical University of Denmark

ENTSO-E TYNDP 2014

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Source: tyndp.entsoe.eu/

2014-2018 2019-2030

4 October 2016DTU Wind Energy, Technical University of Denmark

Offshore grid scenarios - Baltic

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October 2011

4 October 2016DTU Wind Energy, Technical University of Denmark

Offshore grid scenarios – Baltic

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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

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- 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

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• 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

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• Four topologies:

– Limited

– Onshore

– Offshore

– Mix

4 October 2016DTU Wind Energy, Technical University of Denmark

OffshoreDC study – Baltic sea

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4 October 2016DTU Wind Energy, Technical University of Denmark

OffshoreDC study – Baltic sea

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4 October 2016DTU Wind Energy, Technical University of Denmark

Summary

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• 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