OWEN Wokshop Offshore-Windparks November 2000

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HVDC PLUS Power TransmissionOWEN Workshop

OWEN Wokshop Offshore-Windparks November 2000

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Long Distance Cable Transmission Systems

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OWEN Wokshop Offshore-Windparks November 2000

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Frequency Conversion

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OWEN Wokshop Offshore-Windparks November 2000

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Semiconductor Technology Trends for DC Transmissionand Power Quality

HVDCHVDC PLUSMVDC

Long Distance Transmission

Sea Cable TransmissionBack to Back Converters

Up to 3000 MW

Up to 600 MWUp to 600 MW

Up to 200 MW

Up to 200 MWUp to 100 MW

Up to 20 MW

Present and midterm,Si-Technology

101 100 1000 MW1

10

100

1000kV

Longterm InnovationSiC-Technology

IGBT

MasterdrivesIGBT

Light Triggered ThyristorIGBT

IGBT IGBT

OWEN Wokshop Offshore-Windparks November 2000

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Analysis of Long Distance Transmission Part

• Dynamic performance

• Separate active and reactive power control

• Connection to a weak or isolated AC system

• Easy Multi-terminal configuration

• Smaller Space and Mvar requirement for filters

• Transmission to an isolated grid (island)

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OWEN Wokshop Offshore-Windparks November 2000

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Advantages of state-on-the-art HVDCplus Technology

• No need for active power transmission

• No require for reactive power load

• Active and reactive power can be controlled separately

• Connection to a weak or isolated AC system

• Multi-terminal HVDC-System can configured much simpler

• Smaller Space and Mvar requirement for filters

• Transmission to an Island

OWEN Wokshop Offshore-Windparks November 2000

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Result

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Statistic of Major Component Outages of ConventionalHVDC Transmission Systems (CIGRÉ Study 1995-96)

OWEN Wokshop Offshore-Windparks November 2000

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Comparison of Availability - HVDC vs. HVDCplus

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Thyristor IGBT / Diode

similar

Reactor, Capacitor,Filter

• Cable similar

similar

AC-Filters, C-banks GIS, AC- and RI-Filter

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• AC

• Auxiliary Equipment

• Valves

• DC Equipment

• Control and Protection

Reactor, Filter

• Converter transformer similar

HVDCplus and conv. HVDC systems perform similar!

OWEN Wokshop Offshore-Windparks November 2000

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IGBT

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VDRM 4500 V

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Vmax 2500 Vaverage Imax(ph) 800 ARMS *)

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OWEN Wokshop Offshore-Windparks November 2000

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IGBT Module

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OWEN Wokshop Offshore-Windparks November 2000

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IGBT level1

IGBT level2

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IGBT level11

IGBT level12

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Valve TechnologySeries Connection of IGBT

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OWEN Wokshop Offshore-Windparks November 2000

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HVDC Transmission System, One 225 MW System

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ConverterAC-Filter

Converter- Transformer

RI-Filter

SmoothingReactor

+145 kV_dc

-145 kV_dc

Cable

UN = 132 kV_ac

DC-Filter

Capacitor

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UN = 245 kV_ac

OWEN Wokshop Offshore-Windparks November 2000

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Control & ProtectionControl Design and Testing

SIMADYN D

Original Hardware

EMTDC

Workstation

Real Time Simulator

(TNA)

Digital off-lineSimulation(EMTDC)

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OWEN Wokshop Offshore-Windparks November 2000

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Onshore - Offshore DC TransmissionBP Amoco Design Scenario G, Export / Import

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OWEN Wokshop Offshore-Windparks November 2000

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Power Transmission and Distribution Division

675 MW OffshoreDC/AC-ConverterStation