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Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW - experience from realized projects and future challenges. AREVA Energietechnik GmbH Königsbrücker Straße 124 01099 Dresden, Germany AREVA T&D UK Ltd St Leonards Avenue ST17 4LX STAFFORD - PowerPoint PPT Presentation
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Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW -
experience from realized projects and future challenges.
AREVA Energietechnik GmbH
Königsbrücker Straße 124
01099 Dresden, Germany
AREVA T&D UK Ltd
St Leonards Avenue
ST17 4LX STAFFORD
Staffordshire, United Kingdom
Uwe Gierer, Sven Höpfner
Richard Cooke
Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW EOW 20092 2
Wind Power Goes Offshore
Introduction
First of the First
Painting Systems
Materials Selection
Mechanical Design Concepts
Two Years Later
The Hermetic Transformer
A new corrosion protection system for radiators
Larger Projects
The sea-water cooling system
The AREVA Offshore Platform (AOP)
Other Offshore Platform Concepts
Summary
Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW EOW 20096 6
Possibilities to Connect Offshore GridsOverview
Selection criteria
Technical advantages vs. disadvantages
Fulfilment of grid connection requirements
Investment costs
Operation costs
Possibility to expand
Systems availability
Manufacturing capabilities + delivery times
Options
High voltage alternate current (HV AC)
High voltage direct current HVDC (VSC technology)
High volage direct current HVDC (LCC technology with synchronous compensators)
Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW EOW 20098 8
►Completion: 06-2006
►Platform: Substation 33 kV / 132 kV
Length – 23m
Width – 15m
Height – 10m
Weight – 440 tons
►Power: 30 x 3 MW = 90 MW
►AC connection to Heysham S/S (UK)
►Cable length: 28 km (thereof 24 km sea cable)
►Water depth: approx. 20 m
◆Tidal range 10 m
◆High waves
First Of the First - Barrow (UK), 90 MW
Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW EOW 20099 9
Barrow (UK), 90 MWcont’d
Modularised equipment
►33kV Board – including protection
►33/132kV 120MVA Transformer with OLTC
►132kV GIS
►Relay and control panel suite room
►Container for LVAC und DC system (incl. UPS for nautical systems)
►225kVA auxiliary diesel generator
►Emergency shelter und workshop container
►5MVAr Shunt capacitor bank modules
►HVAC Systems
►INERGEN / water fire extinguishing system
Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW EOW 200910 10
Painting Systems / Materials Selection
Typical hand rail socket
External module door hinge
Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW EOW 200911 11
Mechanical Design Concepts
Typical door sill with external seal
Typical optimised door design
Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW EOW 200913 13
Robin Rigg (UK), 180 MW
►Completion: 07-2009
►Platform: 33 kV / 132 kV
►Power: 60 x 3 MW = 180 MW
►AC connection to Seaton S/S (UK network)
►Cable length: 12 km (thereof 9 km sea cable)
►Water depth: approx. 30 m
Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW EOW 200914 14
Robin Rigg (UK), 180 MWcont’
Twin platforms, each
Length – 50 m
Width – 30 m
Heigh – 12 m
Weight – 680 tons
Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW EOW 200915 15
►Completion: 09-2008
►Platform: 33 kV / 110 kV
►Power: 12 x 5 MW = 60 MW
►AC connection to German mainland via island Norderney
►Cable length: 60 km
►Water depth: approx. 30 m
Platform,
Length – 24 m
Width – 18 m
Height – 10 m
Weight – 700 tons
Alpha Ventus (Germany), 60 MW
Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW EOW 200916 16
Alpha Ventus (Germany), 60 MW cont‘d
Quelle: IMS Ingenieurgesellschaft mbH
Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW EOW 200917 17
Onshore Erection Site - Alpha Ventus 60 MW
GIS – Installation in container
Offshore batterie system
Erection site (w/o transformer)
Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW EOW 200918 18
Offshore Installation - Alpha Ventus 60 MW
Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW EOW 200919 19
Hermetic Transformer for Alpha Ventus
Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW EOW 200921 21
A new corrosion protection system for radiators
radiator with cataphoretic painting
Salt spray test after 1,500h max. undermining 0.7 µm (allowed 1 µm)
Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW EOW 200923 23
The sea-water cooling system
Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW EOW 200926 26
AREVA Offshore Platform (AOP) Patent pending
Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW EOW 200928 28
Use of jacking system as part of Transformer off loading solution
STRAND JACKS
TRANSFORMER & SUPPORT GRILLAGE
Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW EOW 200930 30
Summary
First projects of its kind projects have
Steep learning curves with fast transfer to new projects
Harsh operational conditions need
Increased corrosion protection for all systems
Learning from other industries (Oil & Gas, automotive,…)
Weather dependent restricted access need
Minimized offshore installation & service time
Integrated service concepts with wind farm operators
Future wind farms need offshore substations with
Innovations in technical design (such as self-floating and self-installing platforms, centralised water-cooled systems a.o.)
An integrated mechanical & electrical design approach
Innovative platform solutions with integrated design for offshore AC substations from 60 MW to 800 MW EOW 200931 31