Tasharrafin Ƙaɗanda na Tashar Da Turuwa a 20 kV

1. Ƙarfi na Tashar Gida na 20 kV ɗaya-yanayi

Sistemai na tashar gida da 20 kV suna amfani da hanyoyin kablawa ko hanyoyin kablawa da tsakiyar jirgin sama, kuma mazauna ana iya shiga cikin yawan karamin hukumomi mai yawa. Idan yanayi ɗaya ya faru, ba za a samun abin da yake da yawan ƙarin √3 a matsayin wanda ke faru a cikin sistemai na 10 kV. Saboda haka, tashar gida na yanayi ɗaya na sistemai na 20 kV zai iya amfani da nau'in magance masaukanta na makwabtaka. Wannan zai iya ƙara ƙwarewa masaukantar tashar gida na yanayi ɗaya, kuma zai ƙara ƙwarewa sautin da adadin tashar gida na 20 kV ɗaya-yanayi bane da dama da tashar gida na 10 kV.

2. Zabi na Tashar Harsuna da Maida

Don tasirin harsunan ma'aikata (BIL) da saukan maida na tashar gida na 20 kV ɗaya-yanayi, wasu muhimmanci su ne:

Hukumar American National Standard ANSI C57.12.00—1973 (IEEE Std 462—1972) ta bayyana cewa harsunan ma'aikata (BIL) na tsakiyar jirgin sama (20 kV) shine 125 kV; tsari na tsakiyar jirgin sama shine 15.2 kV, kuma maida na AC (60 Hz/min) shine 40 kV.

Saukan maida ta bayyana cewa babu da buƙaci don maida, amma maida mai magance ita ce lafiya. A cikin maida, inda an sanya tsaro zuwa tsarin kabilu, tsaron har tsarin kabilu zuwa tsakiyar jirgin sama ya kasance 1 kV plus 3.46 tsari na tashar gida. Yana nufin cewa a cikin maida mai magance (matsayin dubuwa da tsaro), tsaron har tsarin kabilu na tsakiyar jirgin sama ya kasance:

2.1 Tsakiyar Jirgin Lafiya (240/120 V)

• Harsunan Ma'aikata (BIL): 30 kV

• Maida na AC (60 Hz/min): 10 kV

2.2 Daga Hukumar Saukan Maida na Tashar na China

• Tsakiyar jirgin sama:

• Harsunan Ma'aikata (BIL): 125 kV (dubuwa mai duka), 140 kV (dubuwa mai kasa)

• Maida Mai Magance (200 Hz/min): 40 kV

• Tsakiyar jirgin lafiya:

• Maida (50 Hz/min): 4 kV

3. Ƙarfi da Ingantaccen Tashar Gida na 20 kV ɗaya-yanayi

An yi ƙarfafa sabon ƙwayoyi (50 kVA da 80 kVA), kuma dukansu suna amfani da ƙarfin ƙarfe na arewa. Don ƙara ƙwarewa masaukanta, an ƙara ƙwarewa ƙarfin ƙarfe na masaukanta. An amfani da ɗaya ƙwalba don fitar da kabilu. Ƙarfe na tsakiyar jirgin sama ana shiga cikin yawan karamin hukumomi. Tsakiyar jirgin lafiya ana ƙarfin ƙarfe mai ɗaya.

3.1Takamawa na Nau'ukan Tashar Gida na 20 kV da 10 kV ɗaya-yanayi

• Takamawa na rarrabe 20 kV da 10 kV (a yi misali 50 kVA da 80 kVA) a cikin Tabular 1.

• Takamawa na rarrabe 20 kV da 10 kV (a yi misali 50 kVA da 80 kVA) a cikin Tabular 2.

4. Tashar Gida 20 kV∥10 kV ɗaya-yanayi da Dukiyar Tsari

Amfani da tashar gida na 10 kV zuwa 20 kV na iya ƙara ƙwarewa ƙarfin ƙarfe da kusa ƙara ƙwarewa kabilu. Amfani da tashar gida ɗaya-yanayi na dukiyar tsari (10 kV/20 kV) yana ba da amsa waɗannan ƙasan.

4.1 Ƙarfi

Daga ƙarfi na tashar gida na 10 kV mai ƙarfin ƙarfe ɗaya-yanayi, wannan ƙarfi na dukiyar tsari na 20 kV = 2×10 kV, an amfani da kabilu mai ƙarfin ƙarfe. Da kabilu biyu mai ƙarfin ƙarfe, kabilu biyu suna haɗa da ƙarfin ƙarfe (kabilu mai ƙarfin ƙarfe biyu). Kabilu biyu mai ƙarfin ƙarfe suna haɗa da "tsakiyar jirgin sama" don fitar da ±220 V - tsakiyar jirgin sama. Sune W₁ (tsari mai ƙarfin ƙarfe) da W₂ (tsari mai ƙarfin ƙarfe). A cikin haɗa, U₁/U₂ = W₁/W₂ = 10 kV/220V, kuma tsari mai ƙarfin ƙarfe ya haɗa da kabilu ɗaya. A cikin haɗa, tsari mai ƙarfin ƙarfe ya haɗa da tsari mai ƙarfin ƙarfe.

4.2 Amfani da Haɗa

Kadinta ta haɗa da 20 kV ko 10 kV. Idan 20 kV, kabilu biyu mai ƙarfin ƙarfe suna haɗa da 10 kV. Idan tsari mai ƙarfin ƙarfe I₁, kadinta S₁ = I₁×20 = 20I₁(kVA). Idan 10 kV, kabilu mai ƙarfin ƙarfe biyu suna haɗa da 2I₁ tsari, saboda haka S₁ = 2I₁×10 = 20I₁ (kVA). Saboda haka, S₁ = S₂).

4.3 Ƙarfi

• Ƙarfi ta haɗa da tashar gida na ƙarfin ƙarfe ɗaya-yanayi (patent No. 4612429).

• Haɗa 10 kV/20 kV ta amfani da tap-changer mai ƙarfi mai ƙarfe.

• Masaukanta ta haɗa da hukumar IEC 20 kV (tsari mai ƙarfin ƙarfe: 125 kV).

• Rabuce ta haɗa da hukumar IEC da hukumomin kabilu.

4.4 Ingantaccen Tashar Gida ɗaya-yanayi na Dukiyar Tsari

• Kasuwanci: Rarrabe na sistemai na 20 kV shine 25% na rarrabe na sistemai na 10 kV, wanda ya ba da 75% kasuwanci. Daga amfani da ƙarfin ƙarfe ɗaya-yanayi a cikin ƙarfin ƙarfe, ƙarfin ƙarfe na tashar gida ya haɗa da 30% ƙarfin ƙarfe na tashar gida na S11.

• Kasuwanci na Ƙarfi: Idan 10 kV ya haɗa zuwa 20 kV, an buƙata ƙarfi mai haɗa. Wannan ya ƙara ƙwarewa lokacin ƙarfi, kuma ƙarfi na iya ƙare da kusa a kan lokaci biyu.

5. Tafina

• Yawan karamin hukumomi na 20 kV suna shiga cikin yawan karamin hukumomi mai yawa. Saboda haka, ƙarfin ƙarfe na tashar gida na 20 kV ɗaya-yanayi ya haɗa da ƙarfin ƙarfe na 10 kV ɗaya-yanayi.

• Rarrabe na tashar gida na 20 kV ɗaya-yanayi ta haɗa da rarrabe na tashar gida na 10 kV ɗaya-yanayi; kuma sautinsu ta haɗa da sautin tashar gida na 10 kV. Idan ƙarfin ƙarfe, 20 kV ya haɗa da 10 kV. Idan ƙarfin ƙarfe, 20 kV ɗaya-yanayi ya haɗa da 20% ƙarfin ƙarfe na 10 kV ɗaya-yanayi.

• Tashar gida na 20 kV ɗaya-yanayi ya haɗa da tashar gida na 10 kV ɗaya-yanayi. Tsarin tashar gida na 20 kV∥10 kV ɗaya-yanayi na dukiyar tsari zai iya amfani a cikin 20 kV da 10 kV. Idan 10 kV ya haɗa zuwa 20 kV, ba a buƙata tashar gida, amma a haɗa ƙarfi mai haɗa.