NKT lub hom phiaj los tsim ib cog tshiab, Xws li ib feem peb extrusion ntauwd hauv Karlskrona, Sweden, As Well as ib tug tshiab lag luam-ua hwj huam cable hlab ntsha. Cov kev nqis peev uas yog uas tau tsav los cog thov rau high-voltage DC cables, phau ntawv muaj zog, Thiab ib daim ntawv backlog ntawm ntau tshaj €7 kuj kawg ntawm thawj lub quarter rau 2023.
Txij thaum lub peb hlis ntuj 2023, NKT twb paub tseeb hais tias ntau tshaj €5 kuj nyob rau hauv daim ntawv cog lus high-voltage txeeb thiab booking cov lus. Yuav kom paub tseeb tias phau ntawv no tseem ceeb, npaj rau ib lub lag luam muaj zog outlook, thiab sau tseg rau hauv cov ntaub ntawv high backlog, NKT yuav nqis peev pab kwv yees li ntawm €1 kuj nyob rau hauv nws cov hwj huam high-voltage cable lag luam.
Cov kev nqis peev uas muaj xws li ib tug tshiab lag luam-ua hlab ntsha uas muaj hwj huam cable pw peev xwm piv rau cov hlab ntsha nyob hauv lub ntiaj teb uas twb muaj lawm fleet thiab ib expansion loj expansion ntawm qhov chaw Swedish ntau lawm qhov chaw hauv Karlskrona.
No, NKT yuav tsim ib cog tshiab, xws li ib feem peb 200-meter extrusion ntauwd, Ntxiv xaus-rau-kawg ntau lawm peev xwm alongside qhov chaw uas twb muaj lawm. Qhov no yuav ua rau lub cog neeg ntiaj teb coob ntau lawm qhov chaw rau high-voltage offshore cables.
Nexans’ Response
Claes Westerlind, President thiab CEO ntawm Nexans (NKT), Hais: “Qhov kev txiav txim thiab cov lus muab los ntawm peb cov neeg muas zaub nyob rau lub hlis tsis ntev los no underscore peb kev siv zog hauv integrated tov, XLPE, thiab coj hauv high-voltage DC tshuab. Hwj huam cables yog ib lub caij tseem ceeb nyob rau hauv txoj kev hloov mus txuas ntxiv dua tshiab, Thiab tam sim no voltage ntau lawm thiab nruab nrab peev xwm yog insufficient kom tau raws li cov lag luam cog thov. Peb yeej txaus siab mus loj hlob NKT hauv kab nrog peb xaiv yaam ambitions thiab mus ntxiv tsim peb turnkey hwj huam cable Self rau peb cov neeg muas zaub.”
Kom zoo dua cov Voltage DC Cables
HVDC transmission muaj lub ntsiab kom zoo dua high-voltage AC transmission:
1 Txo nqi dc kab thaum lub transmission hwj huam yog tib yam
Peb-theem AC hwj huam xav tau peb wires mus transmit, Txhua hlau rau hauv pem teb insulation yuav tsum tsim raws li nws tus nqi ncov ntawm ob zaug tus nqi zoo, Thaum DC fais fab tsuas xav tau ob wires (yog ib qho ncej xwb) thiab DC ncov tus nqi yog sib npaug zos rau tus nqi zoo.
Yog li ntawd, vim, DC kis tau tus kab mob DC no yuav txuag tau ntau yam khoom uas kis tau, thiab kuj txo nqi tsheb thauj mus los thiab nruab nrab cov nqi.
thib ob, Tus kab overhead ntauwd qauv ntawm DC transmission yog yooj yim, Txoj kab hauv tsev yog narrower, Thiab cov cable nrog rau tib insulation theem yuav khiav ntawm ib voltage ntau dua.
2 High Voltage DC Transmission Ptshuav nqi Ckev ua tsis taus pa yog SKhw
Vim DC overhead kab siv xwb 1 Lossis 2 hlau, Qhov uas tsis txawj ua rau koj lub siab me me.
Thiab nws kuj muaj ib tug “qhov chaw xwb” nyhuv, Nws yog corona poob thiab xov tooj cua interference yog me dua qhov AC overhead kab.
3 Suitableable Submarine Ptshuav nqi Transmission
General AC fais fab transmission yog feem ntau overhead, Txoj kab thiab lub ntiaj teb daim ntawv muaj peev xwm, Tab sis vim hais tias cov composition ntawm cov huab cua peev xwm yog me me, Tej yam rau lub circuit transmission yog me me.
Tab sis rau underground cables thiab submarine cables, Vim hais tias cov cable thiab lub teb chaws ntawm lub hiav txwv yuav tsim ib lub peev xwm loj. Yog li ntawd, vim, Lub peev xwm kuj yog me dua uas overhead installation, Nws yog sib npaug rau daim ntawv ntxiv ceg ntoo, uas nyeg ua ntxiv losses.
4 Qhov no Ptxham Rtsis tsss. Angle Smuaj peev xwm ua tau
Nyob rau hauv ib qho AC transmission lawv, Tag nrho synchronous generators txuas nrog lub hwj huam lawv yuav tsum tau khaws hauv synchronous lag luam.
Yog hais tias ib txoj kab DC siv los txuas nrog ob AC lub nruab, Cov teeb meem stability tsis nyob ua ib ke vim hais tias cov DC kab twb tsis reactance, Nws txhais tau tias DC transmission tsis yog txwv los ntawm tus transmission nyob deb li cas.
5 muaj peev xwm ua tau Lqhov chaw Short-Circuit Current ntawm tus System
Thaum connecting ob AC lub nruab nrog AC transmission kab, Lub circuit Court tam sim no yuav nce vim qhov nce rau hauv lawv lub peev xwm. Tej zaum yuav tau tshaj tus thawj circuit breaker interrupting peev xwm, uas yuav tsum tau hloov cov khoom heev heev ntawm cov khoom, ua tus nqi peev. Nyob rau hauv DC transmission, tsis muaj tej teeb meem zoo li no.
6 Kho kom haum Stxiv laum huab xeeb Fibst thiab Reliable Osib koom ua ib tug neeg
DC transmission los ntawm tus thyristor converter yuav yooj yim thiab sai kho lub hwj huam thiab twb paub lawm tus tom tsim flip.
Yog hais tias ib tug kab bipolar siv, thaum ib tug ncej tsis ua hauj lwm, Lwm tus ncej tseem siv ntiaj teb los yog dej ua ib circuit Court mus transmit ib nrab ntawm lub hwj huam, Uas kuj txhim kho lub reliability ntawm lub lag luam.
Lub ntsiab kev tshawb fawb yav tom ntej ntawm high-voltage DC cables
Lub ntsiab zog ntawm DC cable insulation khoom muaj xws li hluav taws xob conductivity, thermal conductivity, mechanical thiab qhov chaw xwb zog, thiab tej phooj ywg.
Yuav tswj cov khoom uas cable insulation khoom yog ib tug ntev-standing sib tw rau scholars nyob hauv tsev thiab sia mus thoob ntiajteb kom daws tau.
Txoj kev loj hlob ntawm extruded DC cables yuav tsum daws tau ob qho teeb meem tseem ceeb: cim, thauj, accumulation, thiab dissipation processes nruab nrab qhov chaw tsub nyob rau hauv tes hauj lwm ntawm tej coupling thiab cov kev cai synergistic kev cai ntawm insulation nruab nrab tej khoom.
Raws li cov lus qhia saum toj no, Nws yog txaus los qhia tias txoj kev loj hlob ntawm high-voltage DC cables yog tsim nyog.
Nexans kuj ntsiab lus tawm ntawd los ntawm 2023 mus rau 2026, Cov kev nqis peev uas hais txog high-voltage DC yuav tsum mus cuag txog 1 kuj euros.
Lawv yuav ua kom NKT lub peev xwm mus ntsib tus cog thov kom tshwj xeeb tshaj yog nyob deb li cas HVDC fais fab cable solutions, Li no ho strengthening NKT lub lag luam coj.
Cov cuab tam tshiab yuav tsum commissioned nyob rau hauv 2027.
nyob rau hauv 2020, NKT launched nws qhov kev pab cuam peev rau lub high-voltage cog, uas tau tsav los ntawm ib daim ntawv backlog ntawm kev txiav txim, nrog rau txoj kev german corridor peb tes num, thiab ib tug zoo outlook.
Ib feem tseem ceeb ntawm qhov kev pab cuam yog qhov ntxiv ntawm ib ob extrusion ntauwd rau lub Swedish cog hauv Karlskrona, Uas muaj tam sim no tau tiav.
Peev ntxiv yog tshaj tawm nyob rau hauv 2022 tom qab txuas ntxiv mus ua lag luam.
Uas tau tsav los ntawm qhov kev pab cuam yav dhau los, ntau tshaj 300 Cov neeg ua hauj lwm tshiab muaj keeb lub Karlskrona cog txij thaum 2020.
Tam sim no, NKT expects tus Swedish cog txais tos ntau tshaj 500 cov neeg ua hauj lwm tshiab 2027 nram qab no.
Yog xav paub ntxiv txog qhov kev lag luam cable, txais tos ZMS Cable.