HVDC tashar sauya sheka

Substation, wurin da ake canza wutar lantarki.Domin isar da wutar lantarkin da wutar lantarkin ke samarwa zuwa wani wuri mai nisa, dole ne wutar lantarki

a ƙara kuma a canza zuwa babban ƙarfin lantarki, sannan dole ne a rage ƙarfin lantarki kamar yadda ake buƙata kusa da mai amfani.Wannan aikin hawan wutar lantarki da faduwar shine

kammala ta tashar tashar.Babban kayan aiki na tashar tashar shine mai canzawa da wutan lantarki.

Bisa ga ma'auni, ƙananan ana kiran su substations.Gidan tashar ya fi girma fiye da tashar.

Substation: gabaɗaya matakin ƙasa tare da matakin ƙarfin lantarki a ƙasa 110KV;Substation: ciki har da "mataki-up da mataki-saka" substations na

matakan ƙarfin lantarki daban-daban.

Substation wani wurin wuta ne a cikin tsarin wutar lantarki wanda ke canza wutar lantarki, karba da rarraba wutar lantarki, yana sarrafa alkiblar wutar lantarki.

gudana da daidaita wutar lantarki.Yana haɗa grid ɗin wutar lantarki a duk matakan ƙarfin lantarki ta hanyar transfoma.

Gidan tashar shine tsarin jujjuyawar matakin ƙarfin wutar lantarki na AC (babban ƙarfin lantarki - ƙananan ƙarfin lantarki; ƙananan ƙarfin lantarki - babban ƙarfin lantarki);Tashar mai canzawa ita ce

canzawa tsakanin AC da DC (AC zuwa DC; DC zuwa AC).

Ana kiran tashar gyarawa da tashar inverter na watsa HVDC;Tashar gyara tana canza wutar AC zuwa wutar DC

fitarwa, kuma tashar inverter tana canza wutar DC zuwa wutar AC.Tashar mai jujjuya baya-zuwa-baya ita ce haɗa tashar gyarawa da inverter

tashar watsa HVDC zuwa tasha mai canzawa guda ɗaya, sannan a kammala aikin canza AC zuwa DC sannan DC zuwa AC a wuri ɗaya.

Amfanin tashar mai juyawa

1. Lokacin da ake watsa wutar lantarki ɗaya, farashin layin yana da ƙasa: Layukan watsa wutar lantarki na AC yawanci suna amfani da madugu 3, yayin da DC ke buƙatar 1 (pole ɗaya) ko 2 kawai.

(double pole) madugu.Sabili da haka, watsawar DC na iya adana kayan watsawa da yawa, amma kuma rage yawan sufuri da farashin shigarwa.

2. Ƙarƙashin ƙarancin wutar lantarki na layin: saboda kawai ɗaya ko biyu masu jagoranci ana amfani da su a cikin layi na DC, asarar wutar lantarki mai ƙananan ƙananan kuma yana da "cajin sarari"

tasiri.Asarar ta corona da tsangwamar rediyo sun yi ƙasa da na layin sama na AC.

3. Ya dace da watsawar ruwa: a ƙarƙashin yanayi iri ɗaya na ƙarfe mara ƙarfe da kayan insulating, ƙarfin ƙarfin aiki da aka yarda a ƙarƙashin DC shine

kusan sau 3 sama da wancan a ƙarƙashin AC.Wutar wutar lantarki da layin kebul na DC da ke ɗauke da cores 2 ya fi girma fiye da wanda layin kebul na AC ke watsawa tare da 3.

tsakiya.Yayin aiki, babu asarar induction na maganadisu.Lokacin da aka yi amfani da shi don DC, yana da mahimmanci kawai asarar juriya na waya mai mahimmanci, da kuma tsufa na rufi.

Hakanan yana da hankali sosai, kuma rayuwar sabis ta fi tsayi daidai.

4. Tsarin tsarin: A cikin tsarin watsawa na AC, duk masu samar da wutar lantarki da aka haɗa da tsarin wutar lantarki dole ne su kula da aiki tare.Idan layin DC

ana amfani da shi don haɗa tsarin AC guda biyu, saboda layin DC ba shi da amsawa, matsalar kwanciyar hankali da ke sama ba ta wanzu, wato, watsawar DC ba ta iyakance ta

nisan watsawa.

5. Yana iya iyakance ɗan gajeren lokaci na tsarin: lokacin da ake haɗa tsarin AC guda biyu tare da layin watsawa na AC, ɗan gajeren lokaci zai karu saboda

haɓaka ƙarfin tsarin, wanda zai iya ƙetare ƙarfin saurin karyawa na asali na keɓaɓɓiyar keɓaɓɓiyar, wanda ke buƙatar maye gurbin babban adadin kayan aiki da

ƙara yawan zuba jari.Matsalolin da ke sama ba su wanzu a watsa DC.

6. Saurin tsari mai sauri da aiki mai dogara: watsawar DC na iya sauƙi da sauri daidaita ƙarfin aiki da kuma gane juyar da wutar lantarki ta hanyar mai sauya thyristor.

Idan aka yi amfani da layin bipolar, idan sanda ɗaya ya gaza, ɗayan sandar na iya amfani da ƙasa ko ruwa a matsayin kewayawa don ci gaba da watsa rabin wutar lantarki, wanda kuma ya inganta.

amincin aiki.

Tashar mai sauya-baya-baya

Tashar mai jujjuya baya-zuwa-baya tana da mafi kyawun fasalulluka na watsawar HVDC na al'ada, kuma tana iya gane haɗin grid asynchronous.Idan aka kwatanta da

watsawar DC na al'ada, fa'idodin tashar mai juyawa-da-baya sun fi shahara:

1. Babu layin DC kuma asarar gefen DC kadan ne;

2. Za'a iya zaɓar ƙananan ƙarfin lantarki da yanayin aiki na yanzu a gefen DC don rage matakin rufewa na mai canzawa, bawul mai canzawa da sauran alaƙa.

kayan aiki da rage farashin;

3. Za a iya sarrafa ma'auni na gefen DC gaba ɗaya a cikin zauren bawul ba tare da tsangwama ga kayan aikin sadarwa ba;

4. The Converter tashar ba ya bukatar grounding lantarki, DC tace, DC arrester, DC canza filin, DC m da sauran DC kayan aiki, don haka ceton zuba jari.

idan aka kwatanta da na al'ada high-voltage DC watsa.