20 MVA Substation Power Transformer-33 / 6.65 kV|South Africa 2025

01 Izugbe

1.1 Nkọwa oru ngo

Onye ahịa South Africa nyere iwu ka 20MVA-33/6.65kV rịtuo transformer ike na Mee 2025. Onye ahịa anyị na-ebunye ihe ngbanwe, obere ọdụ ụgbọ mmiri na eriri ọkụ na ogbunigwe obodo na nke mba ụwa. Ihe ngbanwe a bụkwa otu n'ime ihe ngbanwe bụ isi ahaziri maka ọdụ ụgbọ ala m. Saụt Afrịka bụ otu n'ime mba ndị kacha emepe emepe n'ịgbapụta ogbunigwe n'ụwa, a na-achọkwa nnukwu mkpa maka igwe nrụnye ọkụ.

Nke a mgbada ike transformer nakweere ọkọlọtọ IEC 60076{10}}1:2011. Ọ na-anabata usoro jụrụ oyi nke ONAN. Wiring otu: YNyn0, adabara a mgbagwoju grounding gburugburu ebe obibi. Ihe na-efegharị efegharị bụ ọla kọpa, na ọnwụ ọla kọpa dị ala. A na-akwado ya na 33kV n'akụkụ nke mbụ yana 6.65kV n'akụkụ nke abụọ. Ejiri igwe na-agbanwe ihe na-ebugharị (OLTC) na -load tap Changer (OLTC) nwere oke nhazi ±10 × 1%, ọ na-enye ohere mgbanwe mgbanwe voltaji n'okpuru ibu, na-ahụ na ọ na-enye akụrụngwa ngwuputa ọkụ kwụsiri ike. Ihe ngbanwe ahụ na-arụ ọrụ ike dị mma, na-enweghi ibu - nke 13.65 kW, mfu ibu na ogo 75 nke 132.8 kW, yana mfu zuru oke na 72 kW. Iji kwalite ngagharị, ọkachasị n'ebe ndị a na-egwuputa ihe n'ime ime, a na-eji igwe igwe dị arọ- rụpụta transformer, njirimara na-eme ka ọ dị mfe ọrụ na saịtị.

Ihe kpatara na ọ dị mma maka ngwa Ngwuputa

N'ime ọrụ Ngwuputa, ọkụ ọkụ a pụrụ ịdabere na ya na nke dị irè dị mkpa iji hụ na nchekwa na nrụpụta. Ihe ngbanwe a dabara nke ọma maka ọnọdụ nkesa ike Ngwuputa:

Ngwa ndị dị n'elu: Na-agbada 33kV site na grid ịba uru ma ọ bụ ọdụ ike ndọkpụ gaa na 6.6kV, voltaji ọkọlọtọ maka akụrụngwa Ngwuputa.

Nnyefe ike n'okpuru ala: Na-ebufe ike 6.6kV site na eriri gaa na sistemu ala - voltaji dị mma maka nnyefe ogologo- nwere obere mfu.

Ọrụ akụrụngwa ike dị elu-: Na-arụ ọrụ dị arọ{1}} igwe na-egwuputa ihe dị ka igwe igwe bọọlụ, ndị na-eku ume, ndị na-ekuku ikuku, na nfuli mmiri na-ekpochapụ.

1.2 Nkọwa nka nka

20MVA ike transformer nkọwa na akwụkwọ data

1.3 Eserese

20MVA ike transformer akụkụ na arọ nkọwa

02 Nrụpụta

2.1 Isi

Ihe ngbanwe ahụ nwere isi ụkwụ ụkwụ atọ{{0}phase three-, nke egosiri na onyonyo a ka onye ọrụ na-ewepụ yok dị elu. A na-eme isi ahụ nke oyi{3}ọka a na-atụgharị- silicon steel, nke na-enye ezigbo ihe ndọta n'akụkụ ntụgharị mpịakọta- dị mma maka ngwa mgbanwe. Iji wedata ọ dịghị - ibu mfu, a na-eji nkwonkwo kpụkọrọ akpụkọ (nzọụkwụ-apata ụkwụ) iji mee ka mgbagharị magnetik na ntụgharị ígwè ahụ, na-eme ka arụmọrụ zuru ezu.

2.2 Ikuku

Ihe ntụgharị ọkụ YNyn0 na-anabata usoro ikuku diski na-aga n'ihu maka ma elu{1}}voltaji na obere{2} voltaji windings. Igwe ikuku na-aga n'ihu na-enye arụmọrụ axial jụrụ oyi ma dabara adaba maka ngwa ndị dị elu{4}} ugbu a, dị elu-. Igwe ikuku ọ bụla na-enweta ọgwụgwọ mkpuchi siri ike, oyi akwa{7} site na- ihicha oyi akwa, yana njikwa akụkụ iji hụ na nkwụsi ike na ike mkpuchi.

 

2.3 tank

Tank mmanụ ihe ntụgharị ike MVA 20 ga-enwerịrị ule mgbakasị nrụgide tupu ịhapụ ụlọ ọrụ ahụ. A haziri weld niile, nkwonkwo flange na ebe mgbakwasị ụkwụ iji hụ na ntụkwasị obi ogologo oge{2}}. A na-anakwere efere dị iche iche -ụdị radiators, ma arụnyere wiilị 10{6}ton anọ n'okpuru maka mmegharị saịtị dị mfe. A na-enye oghere dị n'akụkụ nke tank ahụ iji mee ka nyocha nke ime na nhazi nke ngwa ahụ dị mfe.

2.4 Mgbakọ ikpeazụ

1. A na-achịkọta akụkụ na-arụ ọrụ nke transformer na foto a, na onye na-anwale na-eme ule arụmọrụ eletrik oge niile.

2. A na-ebuli akụkụ na-arụ ọrụ n'ime tank.

3. Wụnye akụkụ ndị ọzọ: ihe ngosi okpomọkụ mmanụ, valve enyemaka nrụgide, ọkwa ọkwa mmanụ, relay gas, breather, earthing terminal, terminal box, Wheels (10T).

4. Wunye mmanụ mkpuchi n'ime tankị nke na-agbanwe agbanwe iji mejupụta oghere dị n'ime nke ihe ntụgharị ahụ ma hụ na ọkwa mmanụ na-emezu ihe ndị a chọrọ.

5. N'ihi nnukwu mpaghara nke radiator na-adị, a ga-agbakọta ya tupu ule ahụ wee gbasaa ma kpokọta ya maka njem mgbe ule ahụ gasịrị.

03 Nnwale

Usoro ule

1. Nleta nke gbazere gasses na dielectric mmiri mmiri si onye ọ bụla dị iche iche mmanụ ngalaba ma e wezụga diverter mgba ọkụ ngalaba.

2. Ntụle nke Voltage Ratio na nlele nke nchụpụ oge

3. Nyochaa oke na polarity arụrụ arụ{1} n'ime ihe ngbanwe dị ugbu a

4. Ntụle nke iguzogide ikuku

5. Ntụle nke isi mkpuchi mkpuchi

6. Nnwale voltaji etinyere

7. Nleta nke Mba -Ibu ibu na nke dị ugbu a

8. Nwalee na - ndị na-agbanwe mgbata - Nnwale ọrụ

9. Nnwale voltaji butere

10. Nleta nke Mkpirisi Mkpirisi Mkpirisi na Mfu Ibu

11. Mkpuchi nke wiring inyeaka (AuxW)

12. Nnwale ntapu na nrụgide maka mmiri mmiri{1}}Mgbanwe imikpu

04 Mbukota na mbupu

05 Saịtị na nchịkọta

Nke a 20MVA{3}}33/6.65kV{10} mgbada ike transformer bụ maka ọrụ Ngwuputa siri ike. Ọ dị ike, rụọ ọrụ nke ọma ma dịkwa mfe ịkwagharị. Site na nrube isi IEC 60076-1: 2011, ikuku ọla kọpa kachasị mma, yana usoro iwu OLTC dị elu. Ọ na-enye ike kwụsiri ike ma na-agbanwe maka Ngwuputa. tank ahụ siri ike, enwere ike iwepụ radiators, na wiil ndị ahụ dị arọ. Nke a na-eme ka ọ dị mfe iji na saịtị ndị dịpụrụ adịpụ.

Ọ nwere obere mfu, arụmọrụ dị elu, ma dị mfe ijikwa. Nke a na-egosi ebumnobi anyị inye ndị ahịa na-egwuputa ihe akụrụngwa na-agbaso ụkpụrụ ma na-edobe ọrụ nchekwa ma na-arụpụta ihe. Ngwuputa ihe na South Africa na-eto ngwa ngwa. Obi dị anyị ụtọ ịkwado ndị mmekọ anyị na ngwọta ike ahaziri nke na-eme ka ọrụ na-aga nke ọma taa na maka ọdịnihu.