Dab tsi yog ntawm load tap changer hauv transformer
Transformers yog qhov tseem ceeb rau kev faib hluav taws xob kom hluav taws xob tuaj yeem ncav cuag tsev thiab kev lag luam. Qhov tseem ceeb ntawm lub transformer yog nyob rau hauv load kais changer (OLTC) uas pab tswj qhov voltage yam tsis tau rhuav tshem lub hwj chim mov.
OLTCs yog qhov tseem ceeb rau kev ua kom lub zog ruaj khov hauv cov tshuab hluav taws xob. Lawv hloov pauv qhov hloov pauv hloov pauv kom cov zis hluav taws xob tuaj yeem hloov pauv.
OLTCs yuav tsum paub los ntawm cov kws tshaj lij hluav taws xob thiab cov neeg ua lag luam fais fab. Lawv tuaj yeem ua kom lub zog ua haujlwm tau zoo thiab txhim khu kev qha. Hauv daim ntawv no, peb yuav tham txog kev ua haujlwm, qhov tseem ceeb, thiab kev siv OLTCs hauv transformers. Tshawb nrhiav seb OLTCs haum li cas rau niaj hnub no lub zog faib hluav taws xob.
Dab tsi yog On Load Tap Changer (OLTC)?
Ib qho ntawm kev thauj khoom kais hloov pauv (OLTC) yog cov cuab yeej siv nrog cov hloov pauv. Nws txoj haujlwm tseem ceeb yog tswj cov hluav taws xob tawm los yam tsis muaj hluav taws xob nres. Qhov no yog qhov tseem ceeb yog li peb tuaj yeem muaj lub zog ruaj khov.
OLTCs tuaj yeem pom nyob rau ntawm lub zog loj transformers hauv substations. Lawv yog cov tseem ceeb rau kev lag luam hnyav uas yuav tsum tau muaj qhov ruaj khov voltages. Kev hloov pauv tsis tu ncua ua tau los ntawm OLTCs yog li lub zog hluav taws xob ua haujlwm tsis pub dhau qhov txwv.
Lub luag haujlwm tseem ceeb ntawm OLTC yog hloov pauv hloov pauv ntawm qhov hloov pauv. Nws ua qhov no los ntawm kev xaiv cov kais dej sib txawv ntawm cov windings ntawm lub transformer. Txhua tus kais tso cai rau kev hloov me me hauv qhov sib piv.
Thiab ntawm no yog vim li cas lawv tseem ceeb:
Lawv khaws cov voltages kom tsis muaj khoom puas tsuaj.
· Txhim kho lub zog system efficiency thiab kev ntseeg siab
Lawv tuaj yeem hloov tau yooj yim yam tsis tas yuav txiav tawm hluav taws xob. Feem ntau, OLTCs tau dhau los ua cov khoom tseem ceeb ntawm cov khoom siv hluav taws xob tam sim no, pab tswj kev ruaj ntseg thiab kev ua haujlwm zoo.
Yuav Ua Li Cas Ib Tug Ntawm Load Tap Changer Ua Haujlwm?
Nws yog ib qho tseem ceeb kom nkag siab tias OLTC ua haujlwm li cas ua ntej nkag siab txog OLTC txoj haujlwm hauv lub tshuab hloov pauv. Ib qho OLTC tswj qhov hluav taws xob los ntawm kev hloov cov lej hloov pauv thaum nws ua haujlwm. Nws txhais tau hais tias peb tuaj yeem ua qhov hloov kho voltage yam tsis poob lub zog.
OLTC siv qee qhov chaw los ua txoj haujlwm no. Nyob rau theem pib tshaj plaws, tus kais hloov pauv tsuas yog ib txoj hauv kev los hloov cov kais dej ntawm lub tshuab hloov hluav taws xob uas peb siv. Txhawm rau ua qhov no, nws hloov pauv qhov hloov pauv uas siv tau, uas nyob rau hauv lem hloov cov zis voltage. Thiab nws tuaj yeem ua tiav manually lossis txiav raws li qhov yuav tsum tau ua ntawm lub kaw lus.
OLTC cov ntsiab lus tseem ceeb:
· Tus kais tshiab raug xaiv los ntawm tus kais xaiv
· Mus los ntawm tus diverter hloov mus rau tus kais tshiab
· Xyuas kom muaj hluav taws xob tiv tauj. Nws tau ua kom ceev kom tsis txhob cuam tshuam qhov ntws ntawm lub zog. OLTC tuaj yeem hloov kho qhov zoo ntawm qhov hluav taws xob, uas yog qhov zoo rau kev cuam tshuam nrog kev hloov pauv, tiv thaiv thiab siv tag nrho cov khoom siv hluav taws xob.
Cov ntsiab lus tseem ceeb ntawm OLTC
Ib qho ntawm -load tap changer (OLTC) yog tsim los ntawm ob peb yam tseem ceeb uas ua haujlwm ua ke. Txhua daim muaj nws txoj hauj lwm los ua kom muaj zog tswj tau zoo. Paub txog cov khoom no ua rau nws yooj yim dua kom nkag siab tias OLTCs ua haujlwm li cas hauv cov hluav taws xob hloov hluav taws xob.
Qhov tseem ceeb ntawm OLTC yog:
Diverter hloov: Hloov tam sim no ntawm cov kais dej. Xyuas kom tseeb tias tsis muaj kev tawg thaum hloov, ua kom lub zog rau.
Kais Selector: Qhov no yog qhov peb xaiv tus kais uas yuav muab rau peb qhov kev xav tau. Nws ua haujlwm ua ke nrog lub diverter hloov.
Transition resistors: Nws yog ib qho tsim nyog rau kev hloov pauv resistor kom tsis txhob muaj arc thaum hloov pauv tus kais. Lawv muaj kev tiv thaiv tseem ceeb ntawm lub kaw lus, ua ke lawv ua kom paub tseeb tias OLTC tuaj yeem ua haujlwm zoo. Txhua qhov yuav tsum tau ua haujlwm zoo rau lub transformer kom kav ntev tsis muaj teeb meem.
Hom Kais Changers: On Load vs. Off Load
Kais changers yog ib qho tseem ceeb rau kev tswj qhov voltage ntawm transformers. Feem ntau muaj ob hom: ntawm-load thiab tawm-load. Txhua hom ua tau raws li qhov xav tau sib txawv rau kev ua haujlwm faib hluav taws xob.
Ntawm Load Tap Changers (OLTCs) tso cai rau cov hloov pauv hloov cov kais dej yam tsis muaj kev cuam tshuam lub zog. Nws tseem ceeb heev rau kev ua haujlwm tsis tu ncua hauv ntau daim ntawv thov. OLTCs feem ntau pom nyob rau ntawm cov chaw nres tsheb uas muaj kev xav tau siab.
Ntawm qhov tod tes tawm load kais changers xav tau lub transformer de-energized ua ntej hloov kais. Lawv yooj yim rau kev tsim, tab sis tsis hloov pauv. Off load kais hloov pauv feem ntau yog siv thaum nws tsis ua li cas rau muaj qee zaus hloov pauv ntawm qhov hluav taws xob. Nyob rau hauv luv luv, seb puas yuav siv hom kais hloov pauv lossis qhov ntawd feem ntau yog nyob ntawm cov kev xav tau ntawm kev ua haujlwm, kev hloov pauv, thiab kev siv tshwj xeeb ntawm lub tshuab hloov pauv.
Qhov tseem ceeb thiab txiaj ntsig ntawm OLTC hauv Fais Systems
On load kais changers yog ib qho tseem ceeb rau kev ua kom qhov voltage ntawm lub hwj chim faib system nyob ruaj khov. Lawv paub tseeb tias hluav taws xob tau txais rau tib neeg ntawm qhov hluav taws xob zoo yog li tsis muaj dab tsi tawg. OLTCs yog tsim nyog nyob rau hauv lub tshuab nrog hloov load.
OLTCs muab kev tswj tsis siv neeg voltage uas ua rau tag nrho lub zog hluav taws xob ua haujlwm zoo dua. Lawv kho sai sai rau kev hloov pauv hauv kev thov. Thiab qhov kev hloov pauv hloov pauv zoo li no tuaj yeem txo lub zog poob thiab txhim kho qhov kev ntseeg tau ntawm lub cev.
OLTCs muaj qhov zoo hauv qab no:
· Txhim kho lub zog zoo los ntawm kev ruaj khov ntawm qhov hluav taws xob.
· txhim khu kev qha ntau dua los ntawm kev hloov kho tas li.
· Kev txuag hluav taws xob los ntawm kev txhim kho kev ua haujlwm, uas txo qis zog.
Tsis tas li ntawd, OLTCs nce transformer lub neej. Lawv pab ua kom cov khoom nyob ntev dua los ntawm kev txiav cov khoom tawv thiab kub. Lawv dhau los ua ib qho tseem ceeb rau kev txhim kho kev ua tau zoo thiab kev ua siab ntev hauv lub tshuab fais fab.
Daim ntawv thov ntawm On Load Tap Changers
Load tap changers feem ntau yog siv rau hauv cov tshuab fais fab sib txawv. Lawv nyob rau lub hwj chim transformer ntawm substation. Cov transformers no yog qhov tseem ceeb rau kev tswj qhov voltage hauv kev lag luam loj.
Ntxiv nrog rau kev lag luam, OLTCs kuj tseem ceeb hauv nroog faib network. Txhawm rau kom muaj qhov ntsuas hluav taws xob tas li kom tau raws li qhov xav tau ntawm txhua yam hauv tsev thiab kev lag luam.
Cov ntawv thov tseem ceeb suav nrog:
· Substation rau tswj HV kis tau tus mob.
· Muaj transformer rau kev txhawb loj scale tsim.
· Lub nroog faib cov tes hauj lwm uas qhov voltage stability teeb meem; Cov piv txwv no qhia tias OLTCs tseem ceeb thiab hloov tau li cas hauv cov tshuab hluav taws xob niaj hnub no:.
Kev saib xyuas thiab kev saib xyuas kev nyab xeeb
Nyob rau hauv load kais changer tus tu tsis tu ncua yog ib qho tseem ceeb. Nws ua kom paub tseeb tias lawv ua haujlwm zoo thiab kav ntev. Kev tsis saib xyuas yuav ua rau muaj hluav taws xob ntau dua thiab qhov system tsis ua haujlwm.
Kev nyab xeeb kuj yog ib yam uas yuav tsum tau xav txog rau OLTCs. Kev ceev faj kom raug tuaj yeem tiv thaiv hluav taws xob txaus ntshai. Cov kws tshaj lij yuav tsum ua raws li cov qauv kev nyab xeeb thaum ua haujlwm tu.
Cov ntsiab lus tseem ceeb ntawm kev saib xyuas thiab kev nyab xeeb muaj xws li:
Ua raws li txoj cai kev nyab xeeb thaum ua haujlwm hluav taws xob.
Hloov qhov qub ua ntej lawv tawg.
Kev tshuaj xyuas niaj hnub rau kev hnav lossis kev puas tsuaj.
Tsis ntev los no Innovations thiab yav tom ntej Trends
OLTC thev naus laus zis tsis ntev los no tau txhim kho kom nws ua haujlwm tau zoo dua thiab kev saib xyuas tsawg dua. Kev tsim kho tshiab yog nyob rau hauv cov tshuab tsis siv neeg thiab kev saib xyuas ntse. Thiab cov qauv no ua rau nws zoo dua thiab txhim khu kev qha.
Kev txhim kho yav tom ntej tuaj yeem yog:
· Ntse Sensors - Kev Saib Xyuas Lub Sij Hawm Tiag
· Kev saib xyuas algorithms los kwv yees thiab tiv thaiv kev ua tsis tiav.
· Kev koom ua ke nrog cov phiajcim ntse rau kev xav tau zoo dua.
Xaus
Nyob rau hauv load kais hloov pauv yog qhov tseem ceeb ntawm niaj hnub transformers thiab lawv muab ntau yam zoo. Lawv muab peb qhov hluav taws xob zoo thiab ua rau peb lub zog zoo dua. Txhawm rau nkag siab tias lawv ua haujlwm li cas thiab qhov ua rau lawv li cas yog qee yam uas cov kws tsim hluav taws xob thiab cov neeg ua haujlwm faib hluav taws xob yuav tsum paub txog. Cov kev txhim kho txuas ntxiv no taw qhia rau tag kis kaj rau OLTC thev naus laus zis.
