Long Distance Bulk Power Transmission in both UHVAC and UHVDC

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    LongDistance

    BulkPowerTransmissionin

    bothUHVACand

    UHVDC

    FEASTCanberra/AUS

    November12th,2008

    D

    r.PeterKirc

    hesch

    VicePresid

    entR&DAREVAT&D

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    Content

    UHVACvs.UHVDC

    Worldwidep

    erspectives

    Technologic

    alchallenge

    s

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    UHV(UltraHigh

    Voltage):>=800kV

    Am

    ericanliterature:UHV:400800kV;

    EHV(ExtraHigh

    Voltage):>=800kV

    AC:Alternating

    Current

    DC:DirectCurrent

    D

    efinitions

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    Loadcentresarein

    manycountries

    distantfromnatura

    lresources(coal,

    water)

    N

    eedforbulkpowertransmission

    T

    ypicalexamples

    areChina,

    India

    ,

    B

    razil

    Pow

    erlossesareinversely

    prop

    ortionaltothe

    squareofthe

    voltage

    RightOf

    Way-aspects

    W

    hyUHV?

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    Shanxi

    Coal

    base

    Exam

    ple:PopulationdensityChina

    10%

    90%

    SouthWest

    Hydro

    base

    Threegorges

    Mengdong

    Coal

    base

    Trans

    mis

    sion

    corrid

    or

    Transm

    ission

    corri

    dor

    Transmissioncorr

    idor

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    Moreaneconomicalthanatechnicalquestion

    Toc

    onsider:

    Investmentcosts

    forequipmenta

    ndlines(incl.ROW)

    C

    apitalizedvalue

    oflosses

    O

    utagecosts

    Conclusion:

    U

    HVDCiseconomicallymoreattactiveforbulkpo

    wer

    transmission(5000MWa

    ndmore)overlongdista

    nces

    (2000km).

    F

    orotherparame

    tersacase-by-c

    asestudyisnee

    ded

    c

    onsideringthes

    pecificsituation

    ofthecustomer

    ACversusDC

    N

    icolaTESLA

    1856-1943

    AC

    ThomasAlvaEDISON

    1847

    1931

    D

    C

    The

    warofcurrentsisover

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    Content

    UHVACvs.UHVDC

    Worldwidep

    erspectives

    Technologic

    alchallenge

    s

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    Example:UHVDCknownpros

    pects600kV-800kV

    Northern

    Lights

    2014-2020

    RioMadeira

    2014

    WestCor

    each3terminal

    SouthW2

    012

    SouthE2013

    ChickenNeck

    multiple

    schemes

    2012-2020

    Irkutsk

    (Russia)

    -Beijing:

    2015

    Yunnan-Guan

    gdong:2009

    Xiangliaba-Sh

    anghai:2011

    Jingping-EastChina:2012

    Xiluodu-Hu

    nan:2014

    Humeng-Shandong:2015

    Nuozhadu-Gua

    ngdong:2015

    Xiluodu-Han

    zhou:2015

    Humeng-Tia

    njing:2016

    JinshaRiverI-EastChina:2016

    Humeng-Liaoning:2018

    JinshaRiverII-Fujian:2018

    Hami-Central

    China:2018

    J i n s h a R i v e r I I E

    a s t C h i n a : 2 0 1 9

    WestCor

    4terminal

    North2018

    In

    -servicedates

    Aysen-Sic

    2012

    Russia-Europ

    e

    multipleschem

    es

    2015onwards

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    Content

    UHVACvs.UHVDC

    Worldwidep

    erspectives

    Technologic

    alchallenge

    s

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    Technolog

    icalalterna

    tives/ACP

    roducts

    Twoprinciple

    solution

    s:

    a)GIS

    b)AIS

    b1)withlivetank

    circuitbreaker

    b2)withdeadtank

    circuitbreaker

    Voltagem.

    CBR/LT

    ITR/CT

    GIS C

    BR/DT

    Powertransformer

    Disconne

    ctor

    Powertransforme

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    H

    VDCconverterstation

    /maincomponents

    By-pass

    switch

    u-imeasurement

    Disc

    onnector

    HVDCValv

    e

    Converter

    transform

    er

    Wallbushing

    MRT

    Bswitch

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    Arcingchamberde

    velopment

    forcircuitb

    reakers

    Challenges

    XCalculationmetho

    ds

    X

    Ma

    terialquestions

    X

    Testingmethods

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    Po

    werTransformers

    Tank-mou

    nted

    air-blastc

    oolers

    Core&

    Windings-Optimum

    XSinglephase

    X

    Threewoundlimbs

    X

    Connectionin

    parallel

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    DC+/-50

    0kV

    4000MW

    AC230kV

    600MW

    Exam

    ple(inopera

    tion):ACan

    dDClines

    Ne

    lsonRiver/CAN

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    ARE

    VAT&D

    Thankyo

    u