grid access of wind farms - siemens energy sector€¦ · · 2008-05-07grid access of wind farms...

Grid access of Wind FarmsFocus on Offshore

Life Needs Power 2008VDE and ZVEIHannover Fair21. April 2008

March 2008 Energy TransmissionPTD H 1M3 / H.Gangl

Utilization of Wind Energy


Development Wind Power Generation in Germany

GermanWind Power Plants1990

Wind Turbine/ Wind Farm Sites


18,428 MWInstalled capacity

GermanWind Power PlantsDecember 2005




Offshore Windpark



330 kW

Rotor33m

900 kW

Rotor44m

2000 kW

Rotor82m

3600 kW

Rotor107m

5000 kW

Rotor126m

10 kW

Rotor11m

1957


Market Development

World Wide Installed Wind Power Generation in Dec. 200793,881 MW (ref. GWEC)

Germany 22,247 MW (1)U.S.A. 16,971 MW (3) Spain 15,145 MW (2)India 7,844 MW (4)China 5,906 MW (6)Denmark 3,124 MW (5)Italy 2,726 MW (7)U.K. 2,425 MW (8)France 2,370 MW Canada 1,846 MW

In 2007:Growth ~25% (~30% in 2006)Total Investment >EUR 22“

Too much Wind?


Electrical Configuration of a Windpark

G

Feeder 2

0,69/36 kV

36 kV

Netz

150/36 kV

Feeder n

0,69/36 kV

G

Gear box Gear box


Offshore Windpark


Grid Access of Wind FarmsMain Aspects

Studies

Engineering

Procurement

Construction

Training &Maintenance

Cable and Laying

Civil Works

Road Works

Platform construction

Project Financing

AIS, HIS, GIS

FACTS, HVDC

MV Switch Gear

Transformer

Control, Communication

and Protection

Technology

Service

Partnership


Turnkey Responsibilityfrom Studies to Commercial Operation

Procurement, Transport, ErectionCommissioning

Commercial Operation

System and Design Studies

538 m538 m

538 m538 m

538 m538 m

538 m538 m

538 m

73 A219 A

8010

m

219 A219 A

219 A438 A

438 A

657 A


Offshore Windpark

Economic wind park network and grid connection;

Flow studies and short circuit calculations, as well as system grounding concept and perform insulation coordination;

Static and dynamic performance - reactive power compensation;

Resonance behaviors driven by the power grid, cables, transformers, reactors, capacitor banks, wind turbines and SVC;

Prove the conformity with the GRID CODE;

Protection, control (SCADA) and communication system;

Evaluate the overall losses for various scenarios.



Substation

Substation MV

G_15

G_05

G_25

G_35

. . .G_01

G_10. . .G_06

G_20

G_40

G_30

G_55

G_45

G_65

G_75

G_50

G_60

G_80

G_70

G_15

G_05

G_25

G_35

. . .G_01

G_10. . .G_06

G_20

G_40

G_30

MV


System and Design StudiesComplex Modeling of a Number of Wind Farms


Grid Access of Offshore Windparks -the Technology

G~

G~

G~

G~ G~ G~G~

G~

G~


Offshore WindparkTechnical Challenge


Cable

Up to 1.000 kVUp to 2.500 mm2

Up to 230 kVUp to 1.200 mm2


Isolation: Oil impregnated Paper (low viscosity)

Isolation: ExtrudedXLPE


Cable




Isolation: ExtrudedPolyethylenkompound

Isolation: Oil impregnated Paper (high viscosity)

Isolation: Oil impregnated Paper (high viscosity)


Cable

Rotating disk contactor for 7.000 t

Guilio Verne


Cable


Offshore Windpark


Components: Building, MV-Substation


Components: Auxiliary Transformer,Control & Protection


Substation for Grid Access: HIS & Transformer



Solutions for Wind Energy


WindparkTechnical Challenges

Power Grid:2001, Workingday

System Voltage:400 kV 220 kV

Outage

170 MW1,130 MW2,160 MW2,700 MW

≤ 40 %≤ 50 %≤ 60 %≤ 70 %

Voltage

Loss of 2,700 MW Wind-Energy Generation High Voltage Drop - Blackout

1 puVoltage


44 06-2007 Power Transmission and DistributionPTD H 1 MT/Re

Major Grid Failure *

AC Voltages stabilized

* Remote Fault (110 km)

cap.

ind.

Windpark and SVC


Windpark and SVC


Windpark and SVCTechnical Challenges


Offshore Windpark (OWP)Grid Access Concept – Future Perspectives

Offshore AC Busbar and Converter Platform

Converter Station Onshore and access to the Transmission Grid

DC Sea- and Onshore Cable

AC-Sea Cable to the OWP

OWP


Offshore Windpark and HVDCPerspectives

AC L1

AC L2

AC L3

AC L1

AC L2

AC L3

+200kV DC

-200kV DC


Power electronic devices: GTO /IGCT IGBT in PP IGBT Module

Topology of VSC: Two level Three Level Multi Level

ϑ

Vac

ϑ

Vac

ϑ

Vd

2

Vd

2

Vac

ϑ

Vd

2

Vd

2

Vac

ϑ

Vd

2

Vd

2

Vac

ϑ

Vd

2

Vd

2

Vac

Vac

+

Vd2

–

Vd2 Vac

+

Vd2

–

Vd2

M

+

–

Vd

2

Vd

2Vac

M

+

–

Vd

2

Vd

2Vac

HVDC VSC - Technology


Offshore Windpark


Design WorksLayout of an Offshore Platform


Offshore Windpark and HVDC Perspectives


Offshore Windpark


Offshore Windpark: Erection / Construction


Offshore Windpark


Commissioning


Offshore Windpark


110 MW Offshore Windpark Lillgrund / Sweden

Bunkeflo 132 kV

Lillgrund110 MW

48x 2.3 MW

grid access of wind farms - siemens energy sector€¦ · · 2008-05-07grid access of wind farms...

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