Distribution Transformer Off Load Kais Changer
Lub tshuab hluav taws xob faib hluav taws xob yog ib qho tseem ceeb ntawm cov hluav taws xob faib hluav taws xob, uas yog lub luag haujlwm rau kev xa hluav taws xob hluav taws xob los ntawm kev xa mus rau cov neeg siv khoom kawg. Lub tshuab hluav taws xob faib hluav taws xob feem ntau nqis qis thiab hloov lub zog hluav taws xob siab mus rau lub zog hluav taws xob qis txhawm rau txhawm rau pab hluav taws xob xav tau ntawm tsev, chaw ua haujlwm, thiab kev lag luam.
Ib qho tseem ceeb ntawm kev faib cov khoom siv hluav taws xob yog qhov off-load tap changer (OLTC), uas yog lub tshuab siv los tswj cov zis hluav taws xob thiab tswj lub zog xa mus rau cov neeg siv. OLTC kho qhov hloov pauv hloov pauv los ntawm tapping cov ntsiab lus sib txawv ntawm lub tshuab hluav taws xob winding kom tswj tau qhov xav tau kev khiav hauj lwm voltage.
Lub hom phiaj ntawm OLTC yog los xyuas kom meej tias theem voltage xa mus rau cov neeg siv khoom qhov chaw tseem nyob tas li, tsis hais qhov hloov pauv ntawm cov khoom siv hluav taws xob. Voltage fluctuations tuaj yeem ua rau cov khoom puas tsuaj, txo kev ua haujlwm, thiab txawm tias muaj kev cuam tshuam txog kev pabcuam. OLTC pab tswj kev ruaj ntseg voltage, uas yog qhov tseem ceeb rau kev ua haujlwm zoo ntawm cov khoom siv hluav taws xob.
Tus tsim ntawm OLTC nws txawv nyob ntawm seb lub transformer load, loj, thiab daim ntawv thov. Muaj ob lub ntsiab ntawm OLTC: on-load tap changer (OLTC) thiab off-load tap changer (OLTC). Lub on-load kais changer enables lub transformer hloov kais dej nyob rau hauv load, uas ua rau nws haum rau high-power daim ntaub ntawv nrog fluctuating loads. Meanwhile, lub off-load kais hloov pauv tso cai rau tus neeg teb xov tooj hloov txoj hauj lwm kais thaum lub transformer tsis ua haujlwm, thiab lub load raug txiav. OLTC yog qhov tsim nyog rau cov ntawv siv hluav taws xob tsawg thiab yog qhov zoo rau cov transformers nrog cov khoom ruaj khov.
OLTC txoj cai ua haujlwm suav nrog kev siv lub tshuab hloov pauv hloov pauv, uas txav cov khoom siv txuas mus rau qhov sib txawv ntawm qhov sib txawv ntawm qhov hloov pauv winding. Lub mechanism yog nce los yog txo qhov sib piv ntawm cov thawj thiab theem nrab windings, ua rau ib tug proportional hloov nyob rau hauv cov zis voltage. OLTCs kuj tseem tuaj yeem ua haujlwm tsis siv neeg thiab tswj tau los ntawm microprocessor-based maub los uas tas li saib xyuas cov zis hluav taws xob thiab kho cov hloov pauv raws li.
Hauv kev xaus, lub off-load kais hloov pauv yog ib qho tseem ceeb ntawm cov khoom siv hluav taws xob faib hluav taws xob, ua kom muaj kev ruaj ntseg hluav taws xob thiab kev ua haujlwm zoo ntawm cov khoom siv hluav taws xob. Cov txheej txheem OLTC sib txawv muaj, thiab lawv xaiv nyob ntawm qhov hloov pauv hloov pauv, qhov loj me, thiab daim ntawv thov. Kev siv OLTC tuaj yeem pab txo cov khoom siv tsis ua haujlwm, tiv thaiv kev cuam tshuam kev pabcuam, thiab ua kom lub zog ua haujlwm zoo.
