Iziseko zeTransformer yamandla

1. 2. Uhlulo ngokujikajika

2. (1) Isiguquli esijijeka kabini: sisetyenziselwa isiguquli esinyukayo, isiguquli esinyukayo, isiguquli sefektri, njl.njl.

3. (2) Isiguquli esineentambo ezintathu: sisetyenziselwa isiguquli esisezantsi, isiguquli esibophayo, njl.njl.

4. (3) Isiguquli esizidibanisayo: sisetyenziselwa isiguquli esinyukayo, isiguquli sokunxibelelana, njl.njl.

5. (4) I-Split transformer: Kukho iintlobo ezimbini ze-axial split kunye ne-radial split, ezisetyenziselwa ii-transformers zasefektri kunye nee-start-up transformers.

7. 3. Uhlu ngokwesakhiwo

8. (1) Isiguquli sesigaba esinye: sisetyenziselwa ii-transformer ezingama-330~1000kV.

9. (2) Isiguquli sesigaba esithathu: sisetyenziselwa isiguquli se-10~500 kV.

10. (3) I-transformer edibeneyo: I-transformer yahlulwe yangamacandelo aliqela, kwaye i-transformer idityaniswa emva kokuba ifikile kwindawo, esetyenziswa kwiindawo ezinezithuthi ezingahambi kakuhle.

12. 4. Uhlu ngokwendlela yokupholisa

13. (1) Isiguquli esintywiliselwa kwioyile: sisetyenziselwa iiguquli ze-10 ~ 1000kV.

14. (2) I-transformer yohlobo olomileyo: isetyenziselwa ii-transformer ze-10 ~ 110 kV.

15. (3) Isiguquli se-SF6: esisetyenziswa ngoku kwiiguquli ze-110 kV.

17. 5. Imodeli yesiguquli samandla

19. (1) Intsingiselo yoonobumba abakwimodeli

21. D—Isigaba esinye F—Ukupholisa umoya wokuntywiliselwa kwioyile

22. O—self P—ukujikeleza kweoyile ngenkani

23. S—I-J enamaqonga amathathu okanye amathathu—I-J eyazipholisa ngokwayo entywiliselwa kwi-oyile

24. Z—Umlawuli wevolthi elayishwayo L—Ikhoyili yeAluminiyam

26. * Iikhoyili zekopolo kunye neekhoyili ezimbini akufuneki zongeze iimpawu

28. (2) Umzekelo

30. I-SFPSL—120000/110: 110kV, 120MVA isiguquli se-aluminium coil esisebenza nge-oyile esinomoya opholileyo esine-coil ezintathu esine-phase ezintathu esine-coil ezintathu

32. I-OSFPSZ—240000/330: 330 kV, 240MVA ummiselo we-voltage yomthwalo enama-coil amathathu enama-phase amathathu, i-transformer ezidibanisa ngokwayo epholisiweyo ngomoya

Okwesibini, ikhoyili yesiguquli samandla

Ikhoyili yeyona nxalenye ibalulekileyo neyinkimbinkimbi kwi-power transformer. Yenziwe ngocingo lwekopolo (okanye lwe-aluminium) kwaye yenziwe ngamalungu akhethekileyo okukhusela ubushushu.

1. I-Spiral coil

Eyona nto iphambili kwi-spiral coil kukuba inani leentambo ezihambelanayo likhulu, i-wire cake igobile ibe yi-spiral, kwaye i-wire cake enye yi-coil ejika kanye. I-spiral coil inozinzo oluhle loomatshini, i-heat dissipation elungileyo kunye nobugcisa obuhle, kwaye isetyenziswa kakhulu kwii-low-voltage kunye ne-high-current coils zee-transformers.

Ikhoyili yehelical ingasongwa ibe zizakhiwo ezintathu ze-single helix, i-double helix kunye ne-quadruple helix ngokobukhulu bombane.

2. Ikhoyili eqhubekayo

Xa ikhoyili yenziwe ngamacandelo amaninzi eentambo asasazwe kwicala le-axial kwaye akufuneki ukuba adityaniswe, ibizwa ngokuba yikhoyili eqhubekayo.

Umphezulu wenkxaso yokugqibela yekhoyili eqhubekayo mkhulu, amandla e-axial makhulu, ukumelana ne-short-circuit kunamandla, kwaye icandelo ngalinye lomgca linomthamo omkhulu wokusasaza ubushushu. Olu hlobo lwekhoyili lunoluhlu olubanzi lwezicelo kungakhathaliseki ukuba inqanaba le-voltage okanye uluhlu lomthamo lunjani.

3. Ikhoyili exabeneyo

Ikhoyili edibeneyo ineenxalenye ezininzi zemigca edibeneyo (iiphayi). Iikhoyili ezineenxalenye zonke zemigca edibeneyo (iikhekhe) zibizwa ngokuba ziikhoyili ezidibeneyo ngokupheleleyo, kwaye zisetyenziswa kakhulu kwiitransformer ezineevolthi ezingama-220kV nangaphezulu. Ikhoyili eyenziwe yinxalenye yecandelo lemigca edibeneyo (ikhekhe) kunye nenxalenye yecandelo lemigca eqhubekayo ibizwa ngokuba yikhoyili eqhubekayo edibeneyo, esetyenziswa kwiitransformer ezineevolthi ezingama-66 kV nangaphezulu.

Ekubeni ifaka iinguqu ezingahambelaniyo phakathi kweenguqu ezikufutshane zekhoyili, kwakheka iinxalenye zomgca odibeneyo odibeneyo kwaye kwakheka ikhoyili edibeneyo, ngaloo ndlela kwandisa amandla e-longitudinal yekhoyili kwaye kwenze i-impulse voltage ecaleni kokuphakama kwe-axial yekhoyili. Iimpawu zokusasazwa ziyaphucuka, ngoko ke isetyenziswa kakhulu kwiikhoyili ezahlukeneyo ze-high-voltage.

4. Ikhoyili ekhuselweyo yangaphakathi

I-inner shield continuous coil yenzelwe ukuphucula usasazo lwe-impulse voltage ngokwandisa i-series capacitance phakathi kwe-line segments. Isici sayo solwakhiwo kukuba ii-capacitor turns ezongezelelweyo zijijeke ngqo ngaphakathi kwe-continuous line segment. Iziphelo zee-capacitor turns zisongelwe kwi-insulation zize zixhonywe kwi-line segment. Ii-capacitor turns azithwali current kwaye zisebenza kuphela phantsi kwe-impulse voltage.

Iikhoyili eziqhubekekayo ezikhuselweyo ngaphakathi zifumaneka ngokwesakhiwo ngendlela ye-jumper enamacandelo amabini, i-jumper enamacandelo amane, i-jumper enamacandelo asibhozo kunye noqhagamshelo olunecandelo.

Okwesithathu, umbindi wesinyithi we-power transformer

Umbindi wentsimbi ukwayinxalenye ebalulekileyo ye-power transformer. Wenziwa ngokubeka amaphepha esinyithi e-silicon angena ngokukhawuleza aze emva koko awabophe ngee-clip zentsimbi okanye awabophe ngeeribhoni zeglasi.

1. Ishidi lesinyithi lesilicon

Iisheyiti zesinyithi zesilicon ezisetyenziswa kwiitransformer zamandla ziisheyiti zesinyithi zesilicon zegadolinium ezibandayo ezinobukhulu obuyi-0.3 ~ 0.5mm. Okwangoku, yiWuhan Iron and Steel Plant kunye neShanghai Baosteel kuphela ezinokuvelisa iisheyiti zesinyithi zesilicon zegadolinium ezibandayo. Nangona kunjalo, iisheyiti zesinyithi zesilicon zeetransformer ezinkulu kufuneka zingeniswe zivela eJapan.

2. Ulwakhiwo lombindi wesinyithi

(1) Isiseko sesinyithi esineekholamu ezimbini esinesigaba esinye, esisetyenziselwa ii-transformers ezahlukeneyo zesigaba esinye.

(2) Isiseko sejoko esecaleni sekholamu yesigaba esinye, esisetyenziselwa ii-transformers zesigaba esinye ezine-voltage ephezulu.

(3) I-single-phase two column side joke core isetyenziselwa ii-transformers ze-single-phase ezine-voltage ephezulu kunye ne-ultra-high-voltage ezinkulu.

(4) Ikholamu yesithathu enamanqanaba amathathu yintsimbi engundoqo, esetyenziselwa ii-transformers ezahlukeneyo ezinamanqanaba amathathu.

(5) Isiseko sesinyithi esineekholamu ezintlanu kwiitransformer ezinkulu ezinezigaba ezintathu.

Okwesine, itanki yeoyile yetransformer entywilisiweyo kwioyile

1. Itanki yeoyile yohlobo lwebhareli isetyenziswa ikakhulu kwiitransformer ezincinci ezahlukeneyo ezintywiliselwa kwioyile kunye neetransformer ezinkulu kakhulu ezintywiliselwa kwioyile.

2. Itanki yeoyile yohlobo lwe-bell jar, esetyenziswa kakhulu kwi-transformer entywilisiweyo kwi-oyile engama-110~500kV.

3. Itanki yeoyile evalwe ngokupheleleyo sele iza kudityaniswa ide ife. Isetyenziswe kuphela kwiitransformer ezintywilisiweyo kwioyile ze-110kV nangaphezulu kwiminyaka yakutshanje.

5. Umlondolozi weoyile wetransformer entywilisiweyo kwioyile

Umlondolozi weoyile wetransformer unemisebenzi emibini, omnye kukubonelela ngendawo yokwandisa ubushushu kunye nokucutheka kweoyile yetransformer kwitanki yeoyile; omnye kukwahlula ioyile yetransformer emoyeni ongaphandle ukuthintela ioyile yetransformer ukuba ingagugi.

1. I-oyile yohlobo lwe-capsule conservator, esebenzisa ii-capsule zerabha ukwahlula i-oyile ye-transformer kwi-atmosphere yangaphandle, kwaye inika indawo yokwanda nokuncipha kobushushu be-oyile ye-transformer.

2. Umlondolozi weoyile ye-diaphragm usebenzisa i-diaphragm yerabha ukwahlula ioyile ye-transformer emoyeni ongaphandle, kwaye unika indawo yokuba ioyile ye-transformer ikhule kwaye inciphe.

3. I-corrugated oil conservator isebenzisa i-metal expander eyenziwe ngamashiti e-corrugated metal ukuze yahlule i-transformer oil kwi-atmosphere yangaphandle, kwaye inike i-transformer oil indawo yokwandisa nokunciphisa ubushushu. I-corrugated oil conservator yahlulwe yaba ziintlobo ezimbini: uhlobo lwe-oyile yangaphakathi kunye nohlobo lwe-oyile yangaphandle. Uhlobo lwe-oyile yangaphakathi lusebenza ngcono kodwa lunomthamo omkhulu.

6. Indlela yokupholisa yetransformer entywilisiweyo kwioyile

1. Iimpawu ezimele iindlela zokupholisa

Unobumba wokuqala: O—ioyile yeminerali, K—ulwelo olukhuselayo oluyilwelo, L—igesi ekhuselayo.

Unobumba wesibini: N - ukujikeleza kwendalo kwe-convection, F - ukujikeleza kweoyile okunyanzelekileyo, D - ukujikeleza kwesikhokelo okunyanzelekileyo.

Unobumba wesithathu: A - umoya, W - amanzi.

Unobumba wesine: N - i-convection yendalo, F - ukujikeleza kwegazi okunyanzelekileyo (ifeni, ipompo).

2. Imizekelo

I-ONAN—Ukupholisa Kwasimahla

I-ONAF - ukupholisa umoya

OFAF—Ukupholisa Umoya Ngokuhamba Kweoyile Ngokunyanzelekileyo

I-ODAF—Ukupholisa Okukhokelwayo Kokujikeleza Kweoyile Ngokunyanzeliswa

Isixhenxe, i-transformer bushing

1. I-porcelain ecocekileyo yokukhusela i-bushing ye-40kV nangaphantsi

Olu hlobo lwebhokisi lunezakhiwo ezimbini zohlobo lwentonga yesikhokelo kunye nohlobo lwentambo. Uhlobo lwentonga yesikhokelo lusetyenziselwa ii-bushings ze-transformers ezine-voltage ephantsi; uhlobo lwentambo lusetyenziselwa imigca ephumayo ye-10~20kV ene-voltage ephezulu.

2. Umatshini wokufaka umbane ophezulu we-40kV nangaphantsi

Olu hlobo lwe-bushing luneentlobo ezimbini zezakhiwo: uhlobo lwe-guide rod kunye nohlobo lwe-capacitive. I-pure ceramic bushing yohlobo lwe-guide rod isetyenziselwa i-low-voltage winding outlet yee-medium-capacity generator transformers; i-capacitive bushing isetyenziselwa i-low-voltage winding outlet yee-transformers ezinkulu ze-generator.

3. I-capacitive bushing yephepha leoyile engama-66kV nangaphezulu

Ukufakwa ngaphakathi kwesi singxobo yi-capacitor core eyenziwe ngephepha lokufaka i-insulation kunye ne-aluminium foil edibeneyo. I-capacitor core kunye ne-porcelain sleeve zizaliswe yi-insulation oil. Unxibelelwano phakathi kwesingxobo kunye ne-winding luneentlobo ezimbini zohlobo lwe-guide rod kunye nohlobo lwe-cable. I-oil-paper capacitor core iboshwe ngokwahlukana kwi-conductive tube ngephepha le-cable elinobukhulu obuyi-0.08 ~ 0.12mm kunye ne-aluminium foil enobukhulu obuyi-0.01mm.

4. Iibhasi ezithwala iithayiphu zephepha ezingama-66 kV nangaphezulu

Ubushushu bangaphakathi bale sleeve yi-capacitor core eyenziwe ngephepha lokuncamathelisa elijikajikayo kunye ne-aluminium foil. I-capacitor core kunye ne-porcelain sleeve zizaliswe yi-insulation oil, kwaye inxalenye esezantsi yesleeve ayifuni sleeve ye-porcelain. Nangona kunjalo, i-tanδ yolu hlobo lwe-casing inkulu, kwaye iphepha lokuncamathelisa kulula ukuliqhekeza kwaye livelise ukukhupha okuncinci, kwaye imveliso iyekile okwangoku.

5. I-resin cast capacitor bushing

Eyona nto iphambili ekugqumeni ubushushu kwesi singxobo kukwayi-capacitor core eyenziwe ngephepha eligquma ubushushu kunye ne-aluminium foil, kwaye i-epoxy resin igalelwa ngaphandle ukuze ibe yi-sleeve eqinileyo yokukhusela ubushushu. Olu hlobo lwe-bushing lungasetyenziswa njenge-oil-gas bushing, inxalenye ephezulu ibekwe kumbhobho we-GIS, kwaye i-SF6 gas izaliswa phakathi; inxalenye esezantsi intywiliselwa kwi-transformer oil.

8. Indlela yokulawula iVoltage yetransformer yamandla

1. Indlela yokulawula iVoltage

Kukho iintlobo ezimbini zeendlela zokulawula i-voltage kwiitransformers: ulawulo lwe-voltage olungena-excitation kunye nolawulo lwe-voltage on-load. Ulawulo lwe-voltage olungena-excitation, olukwaziwa njengolawulo lwe-voltage olungena-load, kukulawula i-voltage xa ​​i-transformer imisiwe kwaye ingenamthwalo; Isixhobo esilawula i-voltage esinga-excitation sibizwa ngokuba yi-tap-changer engenamthwalo; isixhobo esilawula i-voltage on-load sibizwa ngokuba yi-tap-changer on-load.

2. Indawo yokulawula i-voltage ekwi-load

Kukho iintlobo ezintathu zezikhundla zolawulo lwe-voltage ye-transformer on-load: ulawulo lwe-voltage ye-neutral point, ulawulo lwe-voltage ye-medium voltage end kunye nolawulo lwe-voltage ye-coil ye-high voltage. Phakathi kwazo, ulwakhiwo kunye nenkqubo yolawulo lwe-voltage ye-neutral point ilula kakhulu, kwaye kukho iindlela ezininzi zokusetyenziswa.

3. Iswitshi yokulawula i-voltage ekwi-load

Iswitshi yokulawula uxinzelelo nayo ikwayitshintshi yempompo. Okwangoku, umgangatho weempompo eziveliswa ekhaya awanelanga, kwaye uninzi lweempompo eziveliswayo zixhomekeke kwiimpahla ezingeniswayo, apho ezinye zingeniswa zivela kwi-MR yaseJamani nakwi-Swedish ABB.

Isithoba, ioyile yetransformer

1. Ukwakheka kweoyile yetransformer

Ioyile ye-transformer yioyile yeminerali, engumxube weemolekyuli ezininzi ze-hydrocarbon ezinobunzima obahlukeneyo beemolekyuli, eziyinxalenye yeekhompawundi ze-hydrocarbon ezifana nee-alkanes, ii-naphthenes kunye nenani elincinci lee-hydrocarbons ezinuka kamnandi.

2. Umsebenzi kunye nomgangatho weoyile yetransformer

Ioyile yetransformer yokukhusela ioyile yeetransformer ezintywilisiweyo kwioyile. Ioyile yetransformer ayinamsebenzi wokukhusela ioyile kuphela, kodwa ikwanomsebenzi wokuphelisa ubushushu.

Ioyile yetransformer yahlulwe yaba yioyile enguNombolo 25 kunye neoyile enguNombolo 45 ngokwenqanaba layo lokuqandisa. Iqondo lokuqandisa leoyile enguNombolo 25 lingaphantsi kwama-25°C; iqondo lokuqandisa leoyile enguNombolo 45 lingaphantsi kwama-45°C.

Ioyile yetransformer enguNombolo 25 yioyile esekwe kwiparafini, kwaye ioyile yetransformer enguNombolo 45 yioyile ye-naphthenic. Ngaphambili, ioyile yetransformer enguNombolo 45 kwakufuneka ingeniswe kwamanye amazwe, kwaye ngoku iXinjiang Karamay Refinery nayo inokuyivelisa.

10. Inkqubo yokuvelisa i-power transformer

I-power transformer inamacandelo amabini: umzimba kunye nezixhobo. Umzimba wenziwe nge-coil, iindawo zokukhusela ubushushu, i-iron core, i-tap changer, i-transformer oil kunye ne-oil tank. Izixhobo ze-transformer ziquka i-oil conservator, i-cooler, i-bushing, i-gas relay, i-pressure releaser kunye ne-thermometer. Phakathi kwazo, ii-coolers, i-insulating oil, ii-bushings, ii-tap changer, ii-gas relay, ii-pressure releaser kunye nee-thermometers zonke zithengwa ngaphandle. Oku kulandelayo kwazisa ngokufutshane iinkqubo zokwenza izinto ezininzi eziphambili.

1. Ukujija kwekhoyili: ukufakelwa kwe-skeleton ejijayo - ikhoyili ejijayo - ukujija ucingo - iphakheji yokwambathisa - ukubumba ikhoyili - uvavanyo lwekhoyili.

2. Ukuhlanganiswa kwentsimbi engundoqo: ukusika ishidi lesinyithi lesilicon - ukususa iimbumbulu - ukuqokelela intsimbi engundoqo - ukufaka ipleyiti yokutsala kunye nokukhusela - ukubopha intsimbi engundoqo - uvavanyo lwentsimbi engundoqo - ukufaka iikliphu zentsimbi engundoqo.

3. Ukulungiswa kwezixhobo zokwambathisa: ukusika izixhobo zokwambathisa - ukususa iimbumbulu - iikona eziqhekekileyo - unyango olungenamanzi.

4. Ukucutshungulwa kweetanki zepetroli kunye neetanki zokugcina ioyile: ukusika iipleyiti zesinyithi - ukuwelda kweetanki zepetroli kunye neetanki zokugcina ioyile - ukususa umhlwa - ukuqhumisa isanti - ukupeyinta iprimer - ukupeyinta - uvavanyo lwamandla oomatshini.

5. Indibano ngokubanzi: faka isiseko sesinyithi - faka umbhobho wetanki yepetroli - seta ikhoyili - beka idyokhwe yesinyithi - faka itshintshi yempompo - welding ucingo lwentsimbi - songa i-insulation yentambo yentsimbi - uvavanyo lwemveliso olugqityiweyo kancinci - ukomisa umzimba - ukugqiba umzimba - indibano yetanki yepetroli - indibano yezixhobo - Ukuzaliswa kweoyile - uvavanyo lokutywina - ukujikeleza kweoyile eshushu - ukubekwa okungaguqukiyo.

11. Uvavanyo lwefektri yetransformer yamandla

Uvavanyo lwe-transformer yamandla oluvela kwifektri lwahlulwe ngeentlobo ezintathu: uvavanyo oluqhelekileyo (lwefektri), uvavanyo lohlobo kunye novavanyo olukhethekileyo. Uvavanyo oluqhelekileyo yinto yovavanyo ekufuneka yenziwe kwi-transformer nganye xa iphuma kwifektri, kwaye idla ngokubizwa ngokuba luvavanyo lwefektri; uvavanyo lohlobo yinto yovavanyo eyenziwa ngokuthatha iisampulu ze-1 ~ 2 kwiintlobo zemveliso; uvavanyo olukhethekileyo lucetywa ngumsebenzisi. , kwaye izinto zovavanyo ziyavumelana nomenzi.

1. Iimfuno ezisisiseko kunye nemigaqo yovavanyo lokufakelwa kwe-insulation ye-voltage ephezulu

Ii-transformer windings zivavanywa ngokwe-voltage ephezulu yokusebenza ye-Um kunye nenqanaba lokufakelwa elihambelanayo. Le theyibhile ilandelayo yimiba yovavanyo lokufakelwa echazwe kwi-GB1094.3-2003 standard "Power Transformer Part III: Insulation Level, Insulation Test kunye ne-External Insulation Air Gap".

2. Izinto zovavanyo zesiqhelo (zefektri)

(1) Umlinganiselo wokumelana ne-DC ejikajikayo: umlinganiselo kuzo zonke iiterminal zempompo.

(2) Umlinganiselo wokulinganisa: umlinganiselo kuzo zonke iindawo zokumpompa.

(3) Ukufunyanwa kweqela leentambo: vavanya kwindawo yokuthepha elinganisiweyo.

(4) Ukulinganiswa kokumelana nokufakwa kwe-insulation, umlinganiselo wokufunxa kunye ne-polarization index: Zii-transformers ezingama-220kV nangaphezulu kuphela ezinokulinganisa i-polarization index.

(5) Uvavanyo lwe-tanδ ejijekileyo kunye ne-capacitance: Ii-transformers ezingama-35kV nangaphezulu kufuneka zivavanyelwe i-tanδ.

(6) Uvavanyo lwe-bushing tanδ kunye ne-capacitance: Ii-capacitive bushings ezingama-66kV nangaphezulu mazivavanywe i-tanδ kunye ne-capacitance.

(7) Uvavanyo lweoyile yetransformer: uhlalutyo lweoyile, amandla e-dielectric, i-tanδ, uhlalutyo lwe-chromatographic kunye nezinye izinto, ii-transformer ezingama-750kV nangaphezulu nazo kufuneka zivavanywe ubungakanani bamasuntswana kwioyile. Ngaphezu koko, uhlalutyo lweekhemikhali zeoyile kunye nohlalutyo lwe-chromatographic yeoyile ziphindaphindwe kuyo yonke inkqubo yovavanyo.

(8) Umlinganiselo wokulahleka komthwalo kunye nomlinganiselo wamandla okungekho mthwalo: Yenza uvavanyo phantsi kwentambo yevolthi elinganisiweyo.

(9) Ukulinganiswa kokulahlekelwa ngumthwalo kunye ne-short-circuit impedance: vavanya phantsi kwe-voltage wiring elinganisiweyo.

(10) Uvavanyo lokukhupha inxalenye: Ubungakanani bokukhupha abusetyenziswa njengovavanyo, kodwa busetyenziswa kuphela njengesalathiso sokuba uvavanyo olune-voltage ephezulu lunokwenziwa na.

(11) Uvavanyo lwe-Lightning full-wave impulse: 220kV nangaphezulu, 120MVA nangaphezulu kwee-transformers.

(12) Uvavanyo lwempembelelo yokusebenza: ii-transformers ezingama-330 kV nangaphezulu.

(13) Uvavanyo lwe-voltage olumelana ne-induction olunomlinganiselo wokukhupha okungaphelelanga: ii-transformers ze-110 kV nangaphezulu.

(14) Uvavanyo lombane oluvela ngaphandle olumelana novavanyo lombane olune-voltage ephantsi kunye nendawo engathathi cala.

(15) Uvavanyo lokukhupha inxalenye: Olu vavanyo luvavanyo lokuvavanya ixabiso lovavanyo lwasefektri.

(16) Ukulinganiswa kombane wokuhamba kweoyile: ii-transformers ezineempompo zeoyile ezingama-330 kV nangaphezulu.

(17) Uvavanyo lokukhupha inxalenye yepompo yeoyile ejikelezayo: iitransformer ezinepompo yeoyile engama-330 kV nangaphezulu.

2. Thayipha izinto zovavanyo

(1) Uvavanyo lokunyuka kobushushu.

(2) Izandi zokunqamla umbane zivavanyiwe.

(3) Uvavanyo lwempembelelo yombane olusebenza ngamaza apheleleyo kwindawo engathathi cala.

(4) Uvavanyo lokuphazamiseka kwerediyo

3. Izinto zovavanyo ezikhethekileyo

(1) Ukulinganiswa kwenqanaba lesandi.

(2) Ukulinganiswa kwe-Zero-sequence impedance yee-transformers zesigaba sesithathu.

(3) Ukulinganiswa kwe-harmonic komsinga ongenamthwalo.

(4) Ukulinganiswa kwamandla afunxwa yimoto yefeni kunye nemoto yepompo yeoyile.

(5) Ukulinganiswa kweempawu zokudluliselwa kwevolthi yesikhashana.

(6) Uvavanyo lobuchule bokusebenza nge-short-circuit.