Xarunta beddelka HVDC

Substation, meel koronto la beddelo.Si tamarta korontadu ay dhaliso wershada korontadu u gudbiso meel fog, danabku waa inuu

in la kordhiyo oo loo beddelo danab sare, ka dibna danabku waa in la dhimaa sida looga baahan yahay isticmaalaha agtiisa.Shaqadan kor u kaca iyo hoos u dhaca danabku waa

dhameystiray substation-ka.Qalabka ugu muhiimsan ee saldhiggu waa furaha iyo beddelka.

Marka loo eego miisaanka, kuwa yaryar waxaa loo yaqaan substations.Substation-ku wuu ka weyn yahay saldhigga.

Substation: guud ahaan hoos-u-soo-dejinta oo leh heerka korantada ee ka hooseeya 110KV;Substation: oo ay ku jiraan "kor u kac iyo hoos u dhac" saldhigyada hoose ee

heerarka kala duwan ee danab.

Substation waa xarun koronto oo ku jirta nidaamka korantada kaas oo beddela danab, qaata oo qaybiya tamarta korontada, maamusha jihada tamarta

socodka iyo hagaajinta danab.Waxa ay ku xidhaa xadhkaha korantada ee dhammaan heerarka danab iyada oo loo marayo transformerkeeda.

Substation-ku waa habka beddelka ee heerka danab AC ( danab sare - danab hoose; danab hoose - danab sare);Saldhigga beddelka ayaa ah

U beddelashada AC iyo DC (AC ilaa DC; DC ilaa AC).

Saldhigga toosiyaha iyo xarunta beddelka ee gudbinta HVDC waxaa loo yaqaan saldhigyada beddelka;Saldhigga toosiyaha ayaa awooda AC u roga awooda DC

wax soo saarka, iyo isteeshinka inverter-ku waxa uu awooda DC u rogaa awooda AC.Saldhigga beddelka gadaal-u-soo-celinta waa in la isku daro saldhigga toosiyaha iyo beddelka

xarunta gudbinta HVDC hal xarun beddele, oo dhamaystir habka beddelidda AC ilaa DC ka dibna DC una beddelo AC isla meel.

Faa'iidooyinka xarunta beddelka

1. Marka la gudbinayo isla koronto, qiimaha xariiqdu waa yar yahay: Xadhkaha gudbinta AC ee dusha sare waxay badanaa isticmaalaan 3 kirishbooyada, halka DC ay u baahan tahay kaliya 1 (hal tiir) ama 2

(double tiir) kirishbooyada.Sidaa darteed, gudbinta DC waxay badbaadin kartaa waxyaabo badan oo gudbin ah, laakiin sidoo kale waxay yareyn kartaa gaadiid badan iyo kharashyada rakibidda.

2. Awood yar oo firfircoon oo lumis ah khadka: sababtoo ah hal ama laba kirishbooye ayaa loo isticmaalaa xariiqda sare ee DC, lumista tamarta firfircoon waa mid yar waxayna leedahay "kharashka booska"

saamayn.Waayitaankeeda corona iyo faragelinta raadiyaha ayaa ka yar kuwa khadka sare ee AC.

3. Ku haboon gudbinta biyaha hoostooda: shuruudaha isku midka ah ee biraha aan birta ahayn iyo walxaha dahaarka, tamarta shaqada ee la ogol yahay ee hoos timaada DC waa

qiyaastii 3 jeer ayuu ka sarreeyaa kan AC hoostiisa.Korontada ay gudbiso xariiqda fiilada DC ee leh 2 koor ayaa aad uga weyn tan ay gudbiso xariiqda fiilada AC ee leh 3

xudunta u ah.Inta lagu jiro hawlgalka, ma jiraan wax khasaare ah oo birlab ah.Marka loo isticmaalo DC, asal ahaan waa luminta iska caabbinta siliga xudunta u ah, iyo gabowga dahaarka

sidoo kale aad ayuu u gaabiyaa, nolosha adeeguna waa u dheertahay.

4. xasiloonida nidaamka: Nidaamka gudbinta AC, dhammaan koronto-dhaliyeyaasha isku xiran ee ku xiran nidaamka korontada waa inay ilaaliyaan hawlgalka isku midka ah.Haddii khadka DC

waxaa loo isticmaalaa in lagu xiro laba nidaam AC, sababtoo ah khadka DC ma laha falcelin, dhibaatada xasiloonida ee kor ku xusan ma jiraan, taas oo ah, gudbinta DC kuma xaddidna

fogaanta gudbinta.

5. Waxay xaddidi kartaa wareegga gaaban ee hadda jira ee nidaamka: marka la isku xiro laba nidaam AC oo leh xadhkaha gudbinta AC, wareegga gaaban ayaa kordhin doona sababtoo ah

kororka awoodda nidaamka, taas oo ka badan karta awoodda degdegga ah ee wareegga asalka ah, kaas oo u baahan beddelka tiro badan oo qalab ah iyo

kordhinta xaddi badan oo maalgashi.Dhibaatooyinka kor ku xusan kama jiraan gudbinta DC.

6. Xawaaraha sharciyeynta degdega ah iyo hawlgal lagu kalsoonaan karo: Gudbinta DC waxay si fudud oo degdeg ah u hagaajin kartaa awoodda firfircoon waxayna ogaan kartaa dib u noqoshada qulqulka tamarta iyada oo loo marayo beddelaha thyristor.

Haddii xariiqda laba-cirifoodka la qaato, marka mid ka mid ah tiirku guuldareysto, tiirka kale wuxuu weli u isticmaali karaa dhulka ama biyaha sida wareegga si uu u sii wado gudbinta kala bar awoodda, taas oo sidoo kale hagaajinaysa.

isku halaynta shaqada.

Dib-u-soo-celinta beddelka saldhigga

Saldhigga beddelka gadaal-u-soo-celinta ayaa leh astaamaha ugu aasaasiga ah ee gudbinta HVDC ee caadiga ah, waxayna xaqiijin kartaa isku xirka shabaqlaha asynchronous.Marka la barbardhigo

Gudbinta DC-ga caadiga ah, faa'iidooyinka saldhigga beddelka gadaal-u-celinta ayaa aad caan u ah:

1. Ma jiro khad DC ah, khasaaraha dhinaca DC-na wuu yar yahay;

2. Korantada yar iyo qaabka hawlgalka hadda ee sarreeya ayaa laga dooran karaa dhinaca DC si loo yareeyo heerka dahaarka ee beddelka beddelka, valve beddelka iyo kuwa kale ee la xiriira.

qalabka iyo dhimista kharashka;

3. Harmonics-ka DC-ga waxaa si buuxda loogu xakameyn karaa hoolka valve iyada oo aan la faragelin qalabka isgaarsiinta;

4. Saldhigga beddelka uma baahna koronto dhulka la geliyo, filterka DC, xiraha DC, garoonka beddelka DC, qaadiyaha DC iyo qalabka kale ee DC, sidaas darteed badbaadinta maalgashiga

marka la barbar dhigo gudbinta korantada sare ee caadiga ah ee DC.