22 MVA 3 Ngbanwe ike nke oge-33/11 KV|South Africa 2025

01 Izugbe

1.1 Nkọwa oru ngo

Ọrụ a gụnyere 20/22 MVA, 33/11 kV atọ-phase power transformers arụnyere n'ogo dị ihe dị ka mita 1,800 na South Africa, ebe okpomọkụ kwa afọ sitere na -10 degrees ruo +40 ogo. Ikuku dị gịrịgịrị na elu dị elu na-ebelata nrụpụta ọkụ ọkụ. Ọzọkwa, nnukwu mgbanwe okpomọkụ nwere ike ime ka mgbasawanye okpomọkụ na nkwụsịtụ, yana nrụgide ígwè ọrụ, na akụrụngwa. Ya mere, imewe ahụ aghaghị ịtụle ihe abụọ a gburugburu ebe obibi: elu elu na nnukwu mgbanwe okpomọkụ.

Ndakọrịta gburugburu

Mmetụta dị elu: IEC60076-2 na-achọ ka emelitere jụrụ oyi ma ọ bụ mbelata ibu n'ogo n'elu 1,000 mita. Ihe ngbanwe na-eji ONAN/ONAF ngwakọ jụrụ oyi, na-ejikọta mmanu mmanu na ikuku mmanye na-enyere aka iji kwalite arụmọrụ mgbanwe okpomọkụ.

Mmetụta okpomọkụ: N'ebe okpomọkụ dị elu ({0}} ogo ), ndị na-akwado ọkụ na-eme ka ikpo ọkụ na-ekpo ọkụ iji hụ na ịrị elu okpomọkụ agaghị agafe oke.

Atụmatụ atụmatụ isi

Ikike na Nju: Ike a kwadoro bụ 20/22 MVA, 20 MVA na ọnọdụ ONAN, na-abawanye ruo 22 MVA na ndị fan (ONAF maka 10% bufee). Ngwakọ jụrụ oyi na-eme ka mgbasa ọkụ zuru oke na nnukwu{6}}okpomọkụ na gburugburu elu{7}, na-ezute ikike ibu dị jụụ nke IEC multi{8}.

Ọkwa voltaji na wiring: 33 kV/11 kV, Dyn11 vector group (njikọ voltaji dị elu, njikọ Y dị ala, ebe na-anọpụ iche dabere), na-ahụ n'ihu n'ihu nguzozi nke atọ{{3} na ntinye ala chọrọ. Akụkụ abụọ ahụ na-eji mkpuchi LI200 (na-eguzogide 200 kV voltaji mkpali na 70 kV AC na-eguzogide voltaji) iji hụ na oke ala megide ike mkpuchi mkpuchi nke ikuku dielectric na elu elu.

Ihe na-ekuku na ihe mgbochi: ikuku ọla kọpa na-eme ka ikike ibu dị ugbu a na ike ibu dị mkpụmkpụ{1}, ebe mgbochi 14.29% na-amachi mmejọ ugbu a. N'oge a na-arụ ọrụ n'otu oge, akụkụ nke mbụ nwere 3{7} nke abụọ symmetrical na-eguzosi ike ugbu a nke 21 kA, akụkụ nke abụọ nwere ọnụ ọgụgụ kasị elu nke ugbu a nke 18 kA, nke nwere ike iguzogide mkparị mkpirisi mkpirisi.

Na -Iwu Ibu Voltaji: Onye kọntaktị oghere OLTC nwere ±8 × 1.25% (mkpokọta ±10%) oke ụkpụrụ voltaji. Akụkụ - agbakwunyere, ọ na-eme ka ịrụ ọrụ na mmezi ya dị mfe, na-eme ka ụkpụrụ voltaji dị larịị n'oge arụ ọrụ.

Oil Dielectric na mkpuchi: A na-eji mmanụ mkpuchi ịnweta ịnweta dị elu- nwere ike dielectric nke Karịrị ma ọ bụ nhata 80 kV, jikọtara ya na nhazi mkpuchi ọkwa dị elu{2} iji hụ na oke ọkụ na-eguzogide. Ebe dị elu na-enwe mmetụta dị nta na mkpuchi mmanụ - dabere; A na-akwụ ụgwọ nbibi mkpuchi nke ikuku dị gịrịgịrị na-akwụ ụgwọ site na nhazi bushes na oghere ikuku.

A na-eji ihe nrụnye ọkụ nke nkeji atọ a kwadebere n'ụzọ zuru oke iji hụ na arụ ọrụ nchekwa na ntụkwasị obi: akụkụ - vacuum na {{2}load tap-Changer (±8×1.25%) na onye na-ahụ maka voltaji na-akpaghị aka na-edobe nkwụsi ike voltaji; temometa larịị mmanụ na ikuku temometa na-enyocha okpomọkụ na-ebili ozugbo; elu -voltaji bushing na-enye mkpuchi a pụrụ ịdabere na ya; a desiccant na gas relay na-egbochi mmiri mmiri ma na-enye ịdọ aka ná ntị mmalite maka mmejọ nke ime; onye na-ejide ọkụ ọkụ dị elu - na-echebe akụrụngwa pụọ ​​na mmebi oke voltaji; Ihe ngbanwe 15 dị ugbu a na-akwado nha, nchedo, na ọrụ ndị yiri ya; na ihe nchekwa mmanụ agbakwunyere na-enyere aka ịhazi oke mmanụ na nchekwa, ebe ọ na-ebuli nhazi na itinye ohere.

1.2 Nkọwa nka nka

22 MVA 3 akụkụ ike transformer nkọwa na mpempe akwụkwọ data

1.3 Eserese

22 MVA 3 akụkụ ike transformer eserese na aha aha

02 Nrụpụta

2.1 Isi

A na-eme 20/22 MVA 3-phase power transformer core dị ka ISO 60076 si dị. Mpempe akwụkwọ nchara silicon dị na isi ahụ ruru ụkpụrụ maka ịrụ ọrụ eletrik na magnetik. Ha na-enye obere mfu isi na ọrụ a pụrụ ịdabere na ya. Isi mma dị elu na-ebelata ike ike dị ka okpomọkụ. Ọnwụ isi dị ala na-egbochi ikpo oke ọkụ, na-agbatị ndụ ọrụ ma na-ebelata mkpa usoro jụrụ oyi.

2.2 Ikuku

A na-eji ọla kọpa dị elu- rụọ eriri igwe ndị a. Ha na-agbaso iwu nhazi siri ike. Igwe ikuku dị elu -voltaji Delta nwere ike iguzogide oke oso - ruo -mkpirisi mkpirisi - iyi iyi okirikiri. Ọ nwere ike n'ibu ike. Igwe ikuku kpakpando voltaji dị ala{9} nwere nnọpụiche dabara adaba. A na-emerụ eriri igwe ọla kọpa ahụ site na nrụgide oyi akwa na-achịkwa. Nke a na-eme ka o doo anya ọbụna ugbu a na ikpo ọkụ dị mma. Igwe mkpuchi na-enye arụmọrụ a pụrụ ịdabere na ya na ogologo ndụ ọrụ.

 

2.3 Igbe njedebe

Ihe ntụgharị ọkụ mgbada nwere otu{{0}ibe mmanụ nchekwa mmanụ na-ejikọta mgba ọkụ na nnukwu tankị, nke kewapụrụ site na nkebi nwere ngbanwe nke etinyere n'akụkụ. Tank na-agafe ule akara 30 kPa maka awa 24 na-enweghị ọdịda. Ihe niile na akụkụ niile na-ezute eserese, na ntụgharị n'okpuru 1 mm. Efere ígwè na-agbaso ụkpụrụ mba na enweghị nrụrụ, nchara, peeling, ma ọ bụ dent. Welds kwụ ọtọ, dị larịị, edo edo na enweghị ntụpọ.

 

2.4 IP55 igbe

A na-eji efere ígwè dị 3mm mee igbe njedebe ma nwee nchebe IP55, na-eme ka usoro siri ike na iguzogide uzuzu na mmiri. Emebere ya ihe nleba anya ikuku ikuku na mmanụ maka nlebanya oge n'ezie{{3}. A na-enye ọkụ ọkụ 230V iji gbochie mmiri mmiri, nke dị mkpa ọbụna na South Africa, ebe ọtụtụ ebe akọrọ, ma ugwu ugwu, oge mmiri ozuzo, ma ọ bụ ógbè dị n'ụsọ oké osimiri nwere ike ime ka ikuku. Otu oriọna LED na-agbanye mgbe ọnụ ụzọ mepere emepe, na-enye nyocha dị mma.

 

2.5 Na - Ibunye ihe ngbanwe

Ihe ntụgharị ọkụ ọkụ nwere oghere-ụdị On-Load Tap Changer. Ọ nwere ọnọdụ mgbata 17 nwere usoro nzọụkwụ 1.25%. Oke voltaji bụ 29,700/11,000 V (-10%) ruo 36,300/11,000 V (+10%). Ọ na-enye njikwa voltaji ziri ezi n'oge mgbanwe ibu. OLTC na-arụ ọrụ na ntuziaka na akpaka mode. OLTC na-akwado ma akwụkwọ ntuziaka na ụdị akpaaka, nwere ike ịrụ ọrụ na ngwa ndị ọzọ, ma na-enye ikike njikwa anya.

 

2.6 Mgbakọ ikpeazụ

 

Mgbe a gbakọtara isi ihe ntụgharị na windings, a na-etinye akụkụ na-arụ ọrụ na oven ihicha. Mgbe ihichachara, a na-ebuli ya ma tinye ya na tank mmanụ. Ihe ngbanwe ike nke nkeji atọ a nwere ọtụtụ ngwa na mgbakwunye na nke ọkọlọtọ, dị ka ihe na-agbanwe ihe mgbata ọkụ -, ihe ngosi okpomọkụ mmanụ, egosi okpomọkụ ikuku, Buchholz relay, fan, na otu-ihe nchekwa mmanụ. Ngwa ndị agbakwunyere gụnyere iku ume, elu{6}}voltaji ọkụ na-ejide ihe nkwado, yana ihe ngbanwe 15 dị ugbu a. Mgbe emechara ngwa niile, a na-emecha usoro mgbakọ ahụ na ntinye mmanụ na mkpuchi, njikọ eletrik na ule, na nyocha nke ọdịdị na akara.

 

 

03 Nnwale

Nnwale Ọkọlọtọ na Nnwale oge

Ụkpụrụ etinyere

• IEC 60076-1: 2011 Ndị na-agbanwe ike - Akụkụ 1: Ozuruọnụ
IEC 60076-3: 2013 ndị na-agbanwe ike - Akụkụ 3: ọkwa mkpuchi, ule dielectric na mkpochapụ mpụga na ikuku.
• IEC 60076-7:2018 Ndị na-eme mgbanwe ọkụ – Nkebi 7: Nduzi nbunye maka ịnweta{4}} ihe ntụgharị ọkụ na-emikpu mmanụ
• Ndị ọzọ na-ezo aka na iwu teknụzụ

1. Lelee mkpuchi Core na Frame maka ndị na-agbanwe mmiri mmiri nwere mkpuchi isi ma ọ bụ Frame
2. Lelee nke Voltage Ratio na Vector Group
3. Ntụgharị mgbanwe ugbu a
4. Ntụle nke iguzogide ikuku
5. Ntụnye nke mba - ibu mfu na mba - ibu dị ugbu a
6. Nleba anya na-eguzogide voltaji
7. Ntụle nke impedance voltaji na ibu ọnwụ
8. Na -bu ndị na-agbanwe mgbata - Nnwale ọrụ
9. Nnwale voltaji etinyere (AV)
10. Ihe mkpuchi wiring inyeaka (AuxW)
11. Akara ule
12. Nnwale mmanụ

04 Mbukota na mbupu

4.1 mbukota

 

4.2 Mbupu

 

05 Saịtị na nchịkọta

N'afọ 2025, anyị butere igwe ngbanwe ọkụ abụọ 20/22 MVA na South Africa. Emebere ihe ngbanwe ndị a ka ọ rụọ ọrụ ntụkwasị obi n'ebe dị elu yana gafee oke okpomọkụ.

Anyị nwere ahụmahụ na ọrụ ntụgharị ọkụ eletrik ma na-enye ngwá ọrụ dị iche iche, gụnyere ihe ngbanwe ọkụ, CTs, PTs, sekit breakers, switchgear, GIS, na ndị ọzọ. Igwe ngbanwe ọkụ anyị dị elu{1} na-ahụ na a na-arụ ọrụ nke ọma na gburugburu South Africa na-achọsi ike. Kpọtụrụ anyị taa iji kparịta mkpa ngwọta ike mpaghara gị.