Dab tsi yog qhov kev khiav hauj lwm ib ntus ntawm qhov hloov pauv ntawm qhov hluav taws xob hloov hluav taws xob thiab lub zog hluav taws xob sab hluav taws xob thaum lub sijhawm ua haujlwm nres thiab xa cov hluav taws xob hloov hluav taws xob?
Txoj cai hauv paus ntsiab lus rau kev ua haujlwm ua ntu zus ntawm qhov hloov me me thib ob ntawm lub tsheb npav voltage transformer thaum lub sijhawm kaw thiab lub zog xa hluav taws xob ntawm qhov hluav taws xob hloov hluav taws xob yog: disconnect tus hloov me me thib ob ua ntej thaum hluav taws xob hluav taws xob, thiab tom qab ntawd nres lub zog hluav taws xob ntawm lub zog hluav taws xob. qhov voltage transformer.
Thaum xa tawm lub zog, ua ntej xa cov hluav taws xob sab nraud ntawm lub zog hluav taws xob ntawm lub tshuab hluav taws xob, thiab tom qab ntawd xa cov hloov me me ntawm qhov hluav taws xob hloov hluav taws xob. Lub hom phiaj tseem ceeb yog los tiv thaiv qhov qis-voltage sab fais fab mov ntawm qhov hluav taws xob hloov hluav taws xob los ntawm kev xa hluav taws xob rov qab mus rau qhov hluav taws xob hloov hluav taws xob los ntawm qhov hloov me me thib ob. Qhov kev ua haujlwm no yog tsim nyog rau kev xaim xws li ob lub busbar, ib qho kev sib faib busbar, thiab lwm yam. qhov chaw thib ob ntawm lub tshuab hluav taws xob hloov hluav taws xob tuaj yeem npaj ib sab. Txhawm rau tiv thaiv qhov tshwm sim ntawm kev xa hluav taws xob rov qab rau hauv lub zog thib ob ntawm cov khoom siv hluav taws xob hloov hluav taws xob tsim los ntawm lwm qhov kev sib txuas me me thiab ua kom tau raws li kev ua haujlwm sib koom ua ke hauv ib chav tsev, voltage transformers nrog rau lwm txoj kev xaim yuav tsum tau ua raws li kev ua haujlwm no. ib ntus.
Thaum lub voltage transformer ntawm ob lub busbar los yog ib tug busbar segmented kev twb kev txuas yog powered tawm, piv txwv li hais tias lub thib ob sab ntawm lub voltage transformers ntawm ob busbars ua ke, ua ntej nres lub high voltage sab fais fab mov ntawm lub voltage transformer (disconnect lub tsheb npav khi. hloov thiab segmented hloov); Tej zaum los ntawm kev qhib lub siab-voltage sab riam hloov ntawm qhov hluav taws xob hloov hluav taws xob (qhov thib ob pab ntawm qhov hluav taws xob hloov hluav taws xob hloov riam tsis ua haujlwm), lub zog hluav taws xob theem nrab ntawm lwm qhov hluav taws xob hloov hluav taws xob hauv kev ua haujlwm yuav raug txhawb nqa thiab xa rov qab mus rau qhov siab-voltage. sab ntawm lub zog hluav taws xob voltage transformer. Lub hauv av capacitance tam sim no nyob rau hauv high-voltage sab ntawm lub voltage transformer yuav ua rau lub thib ob me me hloov ntawm kev khiav hauj lwm voltage transformer mus txawv tebchaws (xav tias lub capacitance tam sim no loj dua thaum muaj ib tug busbar), uas tej zaum yuav ua rau txoj kab, transformer txij nkawm. los yog cov khoom siv nquag ua haujlwm ntawm lub busbar kom poob AC voltage, thiab kev saib xyuas relay lossis cov cuab yeej tseem ceeb rau qhov nruab nrab AC voltage yuav ua haujlwm tsis zoo thiab mus rau qhov hluav taws xob, tsim cov khoom siv lossis hluav taws xob tsis raug.
Cov xwm txheej zoo li no tau tshwm sim nyob rau hauv qhov system, thiab kuj tseem muaj cov xwm txheej uas qhov hloov me me ntawm qhov hloov hluav taws xob hloov pauv tsis tau nres ua ntej. Qhov thib ob qhov hluav taws xob ntawm qhov hluav taws xob hloov hluav taws xob dhau los ntawm qhov hluav taws xob hloov hluav taws xob ntawm qhov nruab nrab ntawm qhov hluav taws xob ntawm qhov hloov pauv hloov pauv (qhov hloov hluav taws xob hloov hluav taws xob uas yuav tsum tau raug txiav tawm tom qab kev ua haujlwm tab sis tsis raug txiav), ua rau kev khiav hauj lwm voltage transformer raug xa mus. rov qab mus rau qhov hluav taws xob hluav taws xob busbar, uas ua rau kev puas tsuaj ntawm qhov hluav taws xob hloov hluav taws xob ntawm cov khoom siv tu transformer thiab yuam kev kaw ntawm lub transformer.
Kev khiav hauj lwm ntawm kev nres thiab xa hluav taws xob mus rau lub tsheb npav voltage transformer feem ntau muab faib ua ob hom: ib qho yog rau lub tshuab hluav taws xob hluav taws xob nres thiab xa hluav taws xob ib leeg, thiab lwm yam yog rau lub tshuab hluav taws xob hluav taws xob nres thiab xa hluav taws xob ua ke nrog lub tsheb npav.
Thaum lub voltage transformer yog powered tawm ib leeg, lub thib ob me me hloov ntawm lub voltage transformer yuav tsum tau disconnected ua ntej, thiab ces lub high-voltage sab riam hloov ntawm voltage transformer yuav tsum tau muab tua. Lub zog xa hluav taws xob ua haujlwm yog qhov sib txawv. Thaum lub voltage transformer yog powered tawm ua ke nrog lub tsheb npav, thawj zaug disconnect tus me me hloov lwm lub tsev ntawm lub voltage transformer nyob rau hauv ib qho kev npliag tsheb npav, thiab ces disconnect lub tsheb npav khi los yog seem hloov ntawm lub tsheb npav txiav tawm lub hwj chim mus rau lub tsheb npav. Tom qab tag nrho, qhib lub high-voltage sab riam hloov ntawm voltage transformer. Cov kab ke ntawm kev xa hluav taws xob ua haujlwm yog qhov tsis sib xws rau qhov no.
Cov hluav taws xob hloov hluav taws xob tau teeb tsa rau ntawm kab ntawm 500 kV kab, uas txuas ncaj qha mus rau txoj kab, thiab tsis muaj lwm yam khoom siv hluav taws xob txuas nrog rau sab thib ob ntawm qhov hluav taws xob hloov hluav taws xob. Thaum ua haujlwm kho hluav taws xob tua hluav taws xob ntawm 500 kV kab, nws yog ib qho tsim nyog yuav tsum siv cov kab hluav taws xob hluav taws xob no ua lub hauv paus tseem ceeb rau kev kuaj xyuas qhov tsis muaj qhov hluav taws xob ntawm kab (500 kV cov cuab yeej feem ntau siv cov kev ntsuas hluav taws xob ncaj qha).
Kev ua haujlwm ua ntu zus rau kev tswj xyuas hluav taws xob hluav taws xob ntawm txoj kab yog raws li hauv qab no: kev ua haujlwm hluav taws xob hluav taws xob ntawm cov keyboards thiab riam hloov ntawm ob sab ntawm kab, thiab tom qab ntawd txheeb xyuas qhov hluav taws xob sab nraud ntawm cov kab hluav taws xob hloov hluav taws xob ncaj qha kom paub tseeb tias tsis muaj qhov hluav taws xob. txoj kab. Tom qab ntawd, kev ua haujlwm hauv av ntawm txoj kab sab hauv av hloov riam yog nqa tawm, tom qab ntawd qhov hloov pauv me me ntawm cov kab hluav taws xob hloov hluav taws xob raug txiav tawm. Cov kab ke ntawm kev xa hluav taws xob ua haujlwm tom qab kev saib xyuas kab yog thim rov qab.
Hauv kev ua haujlwm ntawm lub zog xa hluav taws xob rau cov cuab yeej tshiab, qhov teeb meem ntawm qhov hloov pauv hloov hluav taws xob theem nrab ntawm cov hluav taws xob hloov hluav taws xob feem ntau tsis xav txog. Vim hais tias thawj sab ntawm ob lub busbars yuav tsis nyob rau hauv parallel kev khiav hauj lwm thaum lub sij hawm them nyiaj, thiab lub thib ob sab ntawm lub tsheb npav voltage transformer tsis muaj tej yam kev mob rau parallel lag luam. Yog li kev them nyiaj ntawm lub tsheb npav voltage transformer tuaj yeem ua tsis tau raws li lub hauv paus ntsiab lus ntawm "siab voltage ua ntej, tsis tshua muaj hluav taws xob tom qab", tab sis los ntawm thawj zaug kaw qhov hloov pauv me me ntawm qhov hluav taws xob hloov hluav taws xob, thiab tom qab ntawd nqa tawm high-voltage. sab fais fab kis tau tus mob ntawm lub voltage transformer.
Thaum them lub tsheb npav tshiab voltage transformer, nws feem ntau them nrog lub npav. Kev ua haujlwm ua ntu zus yog raws li hauv qab no: thaum lub tsheb npav tsis muaj hluav taws xob, thawj zaug thawb lub siab-voltage sab riam hloov ntawm lub tsheb npav voltage transformer, kaw qhov hloov me me ntawm lub tsheb npav voltage transformer, thiab tom qab ntawd them lub tsheb npav thiab lub tsheb npav voltage transformer. ua ke los ntawm kev hloov (kab hloov, tsheb npav khi hloov lossis ntu hloov).
Raws li cov txheej txheem kev xa hluav taws xob saum toj no, tom qab them lub busbar thiab voltage transformer, nws muaj peev xwm mus ncaj qha mus ntes cov voltage qhia nyob rau hauv lub thib ob sab ntawm lub voltage transformer raws li ib tug txheej txheem rau kev txiav txim seb lub lag luam yog li qub. Piv txwv tias tom qab them lub busbar thiab voltage transformer, qhov hloov me me thib ob ntawm qhov hloov hluav taws xob hloov hluav taws xob raug kaw, thiab tom qab ntawd qhov ntsuas hluav taws xob raug kuaj pom rau kev ntxub ntxaug, thawj zaug, qhov tseeb ntawm kev ua haujlwm tsis tuaj yeem txiav txim ncaj qha raws sijhawm, thiab thib ob, muaj qee qhov kev pheej hmoo rau tus neeg teb xov tooj ua haujlwm ntawm qhov chaw (cov khoom siv tshiab raug them tuaj yeem ua haujlwm tsis zoo)
Tam sim no, nrog rau kev nce qib ntawm kev txawj ntse, voltage transformers rau xa cov teeb liab los ntawm lub teeb tau siv nyob rau hauv substations, thiab tsis muaj teeb meem ntawm lub thib ob lub hwj chim mov ntawm voltage transformers yog reversed mus rau high voltage sab. Lub teeb liab voltage ntawm lub voltage transformer nyob rau hauv lub ntse substation yog kis los ntawm lub network technology, thiab tsis muaj teeb meem ntawm kev sib txuas ncaj qha ntawm cov xov hlau nruab nrab ntawm lub voltage transformer.
Hauv qhov xwm txheej no, tsis muaj txoj cai yuav tsum tau ua rau kev ua haujlwm ntawm qhov siab thiab qis voltage sab thaum lub sijhawm kaw thiab lub zog xa hluav taws xob ntawm cov hluav taws xob hloov hluav taws xob raws li kev txawj ntse. Cov cai tswj kev ua haujlwm sib raug zoo tuaj yeem tsim tau raws li cov lus pom zoo ua haujlwm.
Voltage transformers tuaj yeem siv los xa hluav taws xob ua ntej mus rau sab qis voltage thiab tom qab ntawd mus rau sab siab voltage; Cov txheej txheem ntawm kev txwv qhov siab voltage sab ua ntej thiab tom qab ntawd sab qis voltage thaum lub sijhawm ua haujlwm hluav taws xob tuaj yeem tshawb xyuas qhov ntsuas hluav taws xob ncaj qha rau ntawm qhov nruab nrab ntawm qhov hluav taws xob transformer los txiav txim seb qhov kev ua haujlwm zoo li cas. Kev saib cov txiaj ntsig kev ua haujlwm tau dhau los ua qhov xav tau thiab yooj yim dua.
Hauv kev hloov pauv, lub hauv paus ntsiab lus ntawm "xaiv qhov zoo tshaj plaws ntawm ob qho txiaj ntsig thiab qhov sib zog ntawm ob qhov kev puas tsuaj" yuav tsum tau ua raws li, thiab kev ua haujlwm ua ntu zus yuav tsum tau npaj kom muaj kev nyab xeeb thiab tsim nyog raws li qhov tseeb ntawm cov khoom siv rau ntawm qhov chaw. ua kom muaj kev nyab xeeb thiab du.
