20 MVA Power Supply Transformer-66/11 kV|Afrika Boroa 2025

01 Kakaretso

1.1 Semelo sa Morero

20 MVA oli inmmersed power transformer e ile ea isoa Afrika Boroa ka 2025. Matla a lekantsoeng a transformer ke 20 MVA e nang le pholiso ea ONAN/ONAF. Motlakase oa mantlha ke 66 kV e nang le ± 6 * 1.67% tapping range (OLTC), motlakase oa bobeli ke 11 kV, ba thehile sehlopha sa vector sa YNd11.

OLTC ke mofuta oa khokahanyo oa Y-o nang le seketsoana sa khase switch le puisano ea leeto ho relay ea khase. Transformer ea phepelo ea motlakase ea 20 MVA e na le borakete ea ho ts'oara lehalima ho sireletsa lisebelisoa ho tsoa litsing tsa lehalima. E na le thermometer ea matsoelintsoeke e nang le puisano ea leeto la alamo le transformer ea hajoale e hlokahalang bakeng sa thermometer e kenang. Themomethara ea boemo ba oli e nang le alamo leetong la ho kopana le mitha ea boemo ba oli e nang le alamo ea boemo bo tlase ba oli. Ho feta moo, lebokose la li-terminal le libaka tse ling li na le li-heaters, 'me lehlakore la motlakase o tlase le na le lebokose la cable la motlakase o tlase ho netefatsa ts'ebetso e tloaelehileng tikolohong ea mocheso o tlase. Motlakase oa taolo ea phepelo ea motlakase 110V, switch drive motor power supply voltage 220V, heater power supply voltage 220V.

1.2 Tlhaloso ea Setsebi

20 MVA oli e kentsoeng ka mofuta oa li-transformer tsa matla le leqephe la data

1.3 Litšoantšo

20 MVA e qoelisoang ka setšoantšo sa setšoantšo sa motlakase oa motlakase oa motlakase le boholo.

02 Tlhahiso

2.1 Konokono

Motheo o na le sebopeho sa laminated, se entsoeng ka lishiti tse ngata tse tšesaane tse kopantsoeng hammoho. Botenya ba leqephe ka leng bo baloa ka nepo ho netefatsa phokotso e nepahetseng ea tahlehelo ha o ntse o mamella ho feto-fetoha ha mosebetsi oa makenete. Mokotla o entsoe e le potoloho ea makenete e koetsoeng, ho netefatsa hore matla a khoheli a ka potoloha hantle ka har'a mantlha, ka hona a ntlafatsa ts'ebetso ea ts'ebetso ea transformer. Potoloho ea makenete e koetsoeng e thusa ho fokotsa tahlehelo ea matla a khoheli le ho ntlafatsa ts'ebetso ka kakaretso.

2.2 Ho tsubella

Maqhubu a sa khaotseng a bua ka likhoele tse ka har'a mapheo a matsoelintsoeke ntle le tšitiso kapa karohano. Sebopeho sena se lumella hona joale hore se thehe matla a khoheli a tsitsitseng ka har'a maqhubu, ho fokotsa tahlehelo ea motlakase le kotsi ea liphoso tse bakoang ke lithapo tse robehileng kapa lintlha tsa ho hokahanya. Ka lebaka la moralo o tsoelang pele, e nolofalletsa ho ajoa ha hona joale ka mokhoa o ts'oanang, ho fokotsa ho thehoa ha libaka tse chesang le ho ntlafatsa katleho ea kakaretso ea transformer.

2.3 Tanka

Etsa lipoleiti tsa tšepe tse sehiloeng ka ho kobeha le ho mena ho etsa sebopeho sa khetla sa tanka. Sebelisa mekhoa ea tjheseletsa ea MIG kapa ea TIG ho kenya likarolo ka ho sa feleng, ho laola boleng ba weld ho thibela ho lutla ha nako e tlang. Hloekisa tanka e cheselitsoeng ho tlosa li-oxide le masala a oli. Kenya corrosion- primer le topcoat ho bokantle ba tanka ho thusa ho thibela ho bola le boemo ba leholimo. Eketsa masoba a hlokahalang ka tankeng ho kenya seketsoana, sekoti, moea, sekala sa oli, thermometer le lisebelisoa tse ling ho netefatsa ts'ebetso. Kenya meaho ea ts'ehetso le likhokahano ho netefatsa botsitso ba tanka nakong ea ts'ebetso.

2.4 Kopano ea ho Qetela

Ho Hlahisa le ho Kenyeha ka Maqhubu: Kenya moea oa motlakase o tlase karolong ea mantlha pele, o lateloe ke moea o matla oa motlakase.

Kopano ea 'mele: Beha mantlha le matsoelintsoeke ka har'a tanka ea transformer 'me u li lokise hantle. Kenya li-tap changer le lisebelisoa tse ling tsa kahare.

Vacuuming le Ho Tlatsa Oli: Tlosa moea ho likhoeli le tanka ka ho hloekisa ho etsa hore ho be le vacuum state. Tlatsa tanka ka oli ea transformer ho etsa bonnete ba hore insulation le ho thusa ho pholisa.

Kenyelletso ea lisebelisoa: Kenya lisebelisoa tsa ka ntle tse kang li-coolers, li-conservators tsa oli, li-relay tsa khase, le li-valve tse fokotsang khatello.

03 Teko

1. Tekanyo ea likhase tse qhibilihisitsoeng ka har'a mokelikeli oa dielectric ho tsoa phaposing e 'ngoe le e 'ngoe e arohaneng ea oli ntle le phaposi ea diverter switch.

2. Tekanyo ea tekanyo ea motlakase le ho hlahloba phallo ea mohato

3. Tekanyo ea ho hanyetsa matsoelintsoeke

4. Lekola Insulation ea Core le Frame Bakeng sa Li-transformers tse qoelitsoeng ka Mokelikeli Ka Insulation ea Core Kapa Frame

5. Tekanyo ea khanyetso ea DC Insulation Pakeng Tsa Moea o Mong le o Mong ho ea Lefatšeng le Pakeng tsa Maqhubu

6. Boikemisetso ba capacitances windings lefatšeng le pakeng tsa windings

7. Teko ea Voltage e sebelisitsoeng (AV)

8. Tekanyo ea Che{1}} ea Tahlehelo ea Mojaro le Hona Joale

9. E susumetsoang ke Voltage E Mamela Teko

10. Tekanyo ea-nako e Khutšoane ea Impedance le Tahlehelo ea Mojaro

11. Tekanyo ea likhase tse qhibilihisitsoeng ka har'a mokelikeli oa dielectric ho tsoa phaposing e 'ngoe le e 'ngoe e arohaneng ea oli ntle le phaposi ea diverter switch.

12. Teko ea ho Dutla ka Khatello Bakeng sa Mokelikeli-Immersed Transformers (Tightness Test)

04 Ho paka le ho Romela

phuthela

Ho tsamaisa ka sekepe

05 Sebaka le Kakaretso

Rea leboha ka ho ipha nako ea ho ithuta ka oli{0}}liphetoho tsa motlakase tse qoelitsoeng ka oli. Joalo ka karolo ea mantlha phetisong le kabong ea matla, lihlahisoa tsa rona li tumme ka ts'ebetso ea tsona e ikhethang, botsitso bo tšepahalang, le bokhoni bo nepahetseng ba ho koala le ho pholisa. Ebang ke makaleng a liindasteri kapa tikolohong ea khoebo, li-transformer-tse qoelisoang ka oli li ka khahlametsa litlhoko tse fapaneng tsa motlakase, ho netefatsa ts'ebetso e bolokehileng le e sebetsang ea litsamaiso. Ho re khetha ho bolela ho khetha theknoloji e tsoetseng pele, tšehetso ea litsebi, le tlhokomelo e tsoelang pele ea bareki. Re labalabela ho sebelisana le uena ho ntlafatsa ts'epo le ts'ebetso ea litsamaiso tsa hau tsa matla. Ke leboha tlhokomelo ea hau le tšepo ea hau!