Kev piav qhia
1.Core yam ntxwv ntawm Autotransformers
Piv nrog rau ob qho tib si -winding transformers (kev sib cais transformers), qhov sib txawv ntawm autotransformers nyob rau hauv kev sib txuas hauv Circuit Court:
- Ordinary Transformer: Lub hauv paus thiab theem nrab windings yog kiag li hluav taws xob cais, thiab lub zog yog pauv los ntawm kev sib nqus coupling.
- Autotransformer: Lub hauv paus thiab theem nrab windings yog hluav taws xob txuas nrog, nrog ib feem ntawm lub zog xa mus los ntawm kev sib nqus sib nqus thiab lwm qhov ua ncaj qha los ntawm Circuit Court.
Qhov zoo:
Tus nqi qis, me me, kev ua haujlwm siab: Rau tib lub peev xwm, ib qho autotransformer siv tsawg dua tooj liab hlau thiab silicon steel los xij, txuag cov ntaub ntawv, ua rau nws sib zog, thiab feem ntau ua tau zoo dua.
Kev tswj qhov hluav taws xob zoo dua: Vim nws qhov qis impedance, qhov hloov pauv ntawm qhov hloov pauv nrog kev hloov pauv me dua.
Qhov tsis zoo:
Tsis muaj hluav taws xob cais tawm: Qhov no yog qhov kev nyab xeeb loj tshaj plaws. Txij li thaum cov tswv yim thiab cov zis tau txuas ncaj qha rau hauv lub voj voog, yog tias lub davhlau ya nyob twg siv tsis raug, cov zis tuaj yeem nqa qhov hluav taws xob siab los ntawm cov khoom siv sab nraud, uas yog qhov txaus ntshai heev.
Siab luv luv-circuit tam sim no: Tsawg impedance ua rau muaj kev txhaum tam sim no ntau dua thaum muaj qhov luv luv.
Tseem ceeb cuam tshuam los ntawm winding faults: Yog hais tias qhov sib koom ntawm winding tsis ua hauj lwm, nws yuav cuam tshuam rau ob qho tib si thawj thiab theem nrab circuits ib txhij.
2. Hom Autotransformers
(1) Kev faib tawm los ntawm kev ua haujlwm thiab kev siv (feem ntau)
Qhov no yog txoj kev faib cov tswv yim tshaj plaws, ncaj qha ntsig txog nws txoj kev siv.
Voltage-Txo Starter (Autotransformer Pib)
Nqe lus piav qhia: Qhov no yog ib qho ntawm cov khoom pib classic tshaj plaws rau peb -theem AC asynchronous motors. Nws siv qhov txo qis rau lub cev muaj zog stator winding thaum pib los ntawm autotransformer kom txo qhov pib tam sim no (feem ntau tuaj yeem txo mus rau 1/4 txog 1/3 ntawm tag nrho -voltage pib tam sim no). Thaum lub cev muaj zog nce mus txog qhov ntsuas nrawm, qhov hloov pauv hloov mus rau qhov ua haujlwm puv -voltage.
Nta: Feem ntau muaj ntau qhov hluav taws xob kais dej (xws li 65%, 80% kais) xaiv los ntawm kev sib npaug pib lub zog thiab pib tam sim no.
Voltage Regulator (Adjustable Autotransformer)
Nqe lus piav qhia: Qhov no yog ib zaug xwb -theem lossis peb-theem autotransformer nrog rau qhov thib ob winding uas muaj cov zawv zawg sib cuag (carbon txhuam) uas tau tsav los ntawm lub log lossis servo lub cev muaj zog. Los ntawm tig lub tes log, qhov tso zis hluav taws xob tuaj yeem ua tau zoo thiab hloov kho tsis tu ncua. Feem ntau nyob rau hauv lub chaw soj nstuam.
Nta: Cov zis hluav taws xob tuaj yeem hloov kho los ntawm 0V mus rau me ntsis siab dua qhov hluav taws xob input (xws li, 0-250V lossis 0-430V).
Cov Hom Phiaj: Nplhaib core (rau lub zog me me) lossis square core (rau lub zog loj dua).
Lub zog Autotransformer
Nqe lus piav qhia: Siv nyob rau hauv siab -voltage fais fab tshuab los txuas cov kab sib txuas ntawm cov kab hluav taws xob zoo sib xws, xws li txuas 110kV thiab 220kV daim phiaj, lossis 220kV thiab 500kV daim phiaj.
Nta: Muaj peev xwm siab heev (txog pua pua txhiab kVA), ib qho khoom siv tseem ceeb hauv lub zog hluav taws xob. Nws qhov kev hloov pauv feem ntau yog ze rau 1: 2, muab cov txiaj ntsig tseem ceeb ntawm kev lag luam hauv daim ntawv thov no.
Tom ntej: AC Traction Transformer
Nqe lus piav qhia: Siv hauv kev tsheb ciav hlau hluav taws xob (piv txwv li, siab - tsheb ciav hlau ceev). Ib qho winding txuas mus rau cov kab hluav taws xob hluav taws xob (high voltage), thiab lwm qhov txuas mus rau txoj kab thiab hauv av, muab qhov sib txawv ntawm qhov sib txawv rau lub tshuab.
(2) Kev faib tawm raws theem
Tib -Phase Autotransformer: Siv nyob rau hauv ib zaug -theem fais fab mov xwm txheej, xws li lub chaw soj nstuam voltage regulators, tsev neeg stabilizers, thiab lwm yam.
Peb-Phase Autotransformer: Siv nyob rau hauv peb-theem fais fab mov. Nws tuaj yeem yog peb ib zaug -theem transformers ua ke lossis ib qho peb -theem core qauv. Dav siv nyob rau hauv lub hwj chim systems thiab industrial motor pib.
(3) Classification los ntawm Winding Structure
Ib leeg-Winding Autotransformer: Hom ntau tshaj plaws, tsuas yog ib qho winding uas muaj kais dej.
Dual-Winding Autotransformer: Qhov tseem ceeb raws li ib txwm muaj dual-winding transformer, nrog rau thawj thiab theem nrab windings txuas nrog hauv series, ua kom muaj kev hloov pauv tshwj xeeb thiab cov txheej txheem hauv av. Feem ntau siv hauv cov tshuab fais fab.
(4) Kev faib tawm los ntawm Txoj Kev Txias
Qhuav- Hom Autotransformer: Txias los ntawm huab cua, feem ntau siv sab hauv tsev, hauv chav kuaj, lossis qhov yuav tsum tau tiv thaiv hluav taws.
Roj-Immersed Autotransformer: Windings yog immersed nyob rau hauv insulating roj, uas muab cua txias thiab rwb thaiv tsev. Lub peev xwm siab, feem ntau yog siv rau sab nraum zoov fais fab.
3.Kev siv ntawm Autotransformers
(1) Kev lag luam teb:
- Lub cev muaj zog txo qis pib: Siv los pib cov kiv cua loj, twj tso kua mis, compressors, thiab lwm yam, kom tsis txhob ua rau muaj kev cuam tshuam ntau dhau ntawm daim phiaj hluav taws xob. Qhov no yog ib qho ntawm nws feem ntau classic thiab siv dav siv.
- Kev Tswjhwm Voltage: Siv nyob rau hauv lub Hoobkas kev cob qhia hauv zos los kho cov kev khiav hauj lwm voltage ntawm cov cuab yeej, kom ntseeg tau tias cov cuab yeej ua haujlwm ntawm qhov zoo tshaj plaws voltage.
(2) Fais fab System:
- Grid Interconnection: Ua raws li kev sib txuas sib txuas, txuas ob qhov kev sib txuas sib txuas nrog cov qib voltage zoo sib xws (xws li 132kV / 275kV) rau kev sib kis tau zoo thiab kev xa tawm.
- System Grounding: Muab qhov nruab nrab taw tes hauv av.
(3) Chaw kuaj thiab kuaj:
- Adjustable AC Power Supply: Muab kev hloov pauv tsis tu ncua rau kev sim ntsuas hluav taws xob, cov khoom siv hauv cov khoom siv hluav taws xob thiab hluav taws xob.
- Kev Ntsuas Cov Khoom Siv: Siv rau kev kuaj dielectric ntawm cov khoom siv hluav taws xob lossis kev ntsuas kev ua haujlwm ntawm qhov sib txawv voltages.
(4) Tsev neeg thiab kev lag luam teb:
- AC Voltage Stabilizer: Ntau lub tsev stabilizers siv autotransformers sab hauv (feem ntau tapping thiab hloov pauv ntawm lub relay) los tiv thaiv cov hluav taws xob tsis ruaj khov.
- Cov Khoom Siv Suab: Siv rau qhov sib txuam voltage hauv qee qhov siab -kawg suab tshuab.
(5) Rail Transit:
Electrified Railway Power Supply System: Muab lub zog traction xav tau rau siab - tsheb ciav hlau ceev.
