Qhov sib txawv thiab kev siv ntawm Circuit Breakers, Load Switches thiab Disconnectors
Circuit breakers, load switches, thiab disconnectors yog txhua yam tseem ceeb hauv cov tshuab hluav taws xob, thiab thaum cov neeg ua haujlwm hluav taws xob feem ntau paub txog cov ntsiab lus no, tej zaum yuav muaj qee qhov tsis meej pem txog lawv qhov sib txawv thiab kev siv. Rau cov pib hluav taws xob, qhov sib txawv ntawm cov cuab yeej no tuaj yeem yog qhov txaus ntshai tshwj xeeb.
Lub Circuit Court breaker yog tsim los kaw, nqa, thiab tawg tam sim no nyob rau hauv ob qho tib si ib txwm thiab txawv txav Circuit Court tej yam kev mob, nrog rau luv luv-circuit tej yam kev mob, nyob rau hauv ib lub sij hawm teev. Nws yog ib qho tseem ceeb ntawm kev ruaj ntseg ntaus ntawv uas tiv thaiv hluav taws xob circuits los ntawm kev puas tsuaj vim overload los yog luv circuits.
Ib qho kev hloov pauv, ntawm qhov tod tes, zaum ntawm qhov hluav taws xob hluav taws xob thiab qhov hloov pauv. Nws nta ib qho yooj yim arc extinguishing ntaus ntawv uas tso cai rau nws txiav tawm rated load tam sim no thiab tej yam overload tam sim no. Txawm li cas los xij, nws tsis tuaj yeem cuam tshuam qhov luv-circuit tam sim no. Load keyboards feem ntau yog siv nyob rau hauv cov xwm txheej uas nquag hloov ntawm loads yuav tsum tau, xws li nyob rau hauv lub tshuab faib khoom los yog lub cev muaj zog tswj circuits.
Ib qho kev rho tawm, tseem hu ua disconnector, yog siv los txiav lub voj voog nyob rau hauv qhov tsis muaj kev thauj khoom. Nws lub hom phiaj tseem ceeb yog muab qhov pom kev cuam tshuam ntawm cov khoom siv tu thiab cov khoom siv hluav taws xob, ua kom muaj kev nyab xeeb ntawm tus kheej ntawm cov neeg ua haujlwm tu. Txij li kev rho tawm cov keyboards tsis muaj cov cuab yeej tshwj xeeb arc-extinguishing, lawv tsis tuaj yeem siv los cuam tshuam kev thauj khoom lossis luv-circuit tam sim no. Yog li ntawd, lawv tsuas yog yuav tsum tau ua thaum lub Circuit Court breaker twb disconnected lub Circuit Court.
Yog li, dab tsi yog qhov sib txawv tseem ceeb ntawm peb cov khoom siv no? Circuit Court breakers yog tsim los tiv thaiv circuits los ntawm overload thiab luv circuits, load keyboards yog siv rau nquag hloov ntawm loads, thiab cais cov keyboards muab ib tug ruaj ntseg disconnection point rau kev kho lub hom phiaj.
Hais txog lawv daim ntawv thov, Circuit Court breakers feem ntau yog ntsia rau hauv lub ntsiab faib vaj huam sib luag los yog sub-panels los tiv thaiv ib tug neeg circuits. Load switches tuaj yeem pom nyob rau hauv cov tshuab faib khoom, lub cev muaj zog tswj circuits, lossis lwm yam kev siv uas yuav tsum tau hloov pauv ntau zaus. Kev rho tawm cov keyboards feem ntau yog siv rau hauv switchgear, substations, lossis lwm qhov chaw uas cov neeg ua haujlwm tu yuav tsum tau ua haujlwm ntawm cov khoom siv hluav taws xob hauv qhov tsis muaj kev thauj khoom.
Hauv kev xaus, kev nkag siab qhov sib txawv ntawm cov hluav taws xob hluav taws xob, cov khoom siv hluav taws xob, thiab cov hluav taws xob sib cais yog qhov tseem ceeb rau cov neeg ua haujlwm hluav taws xob. Los ntawm kev paub koj tus kheej nrog lawv cov yam ntxwv tshwj xeeb thiab kev siv, koj tuaj yeem ua kom muaj kev nyab xeeb thiab ua haujlwm zoo ntawm koj lub tshuab hluav taws xob.
▶ 01 Kev piav qhia ntawm cov ntsiab lus ntawm kev hloov pauv, disconnector thiab Circuit Court breaker
Load Switch:
Muaj nuj nqi: tuaj yeem kaw thiab txiav tawm ntau yam tam sim no raws li kev ua haujlwm ib txwm muaj, xws li thauj khoom tam sim no, excitation tam sim no, them tam sim no, thiab lub txhab nyiaj capacitor tam sim no.
Daim ntawv thov: tuaj yeem siv ib leeg hauv circuits uas yuav tsum muaj cov ntsiab lus tsis sib xws vim muaj cov kev xav tau tshwj xeeb.
Kev Ua Haujlwm Zoo: tuaj yeem ua haujlwm raws li kev thauj khoom, txhais tau tias nws tuaj yeem hloov mus rau thiab tawm thaum muaj zog.
Isolating Hloov (Disconnector):
Muaj nuj nqi: Muab cov rwb thaiv tsev nyob deb ntawm cov neeg sib cuag thaum nyob rau hauv txoj hauj lwm sib faib thiab ib qho pom tseeb kev sib txuas. Thaum kaw, nws tuaj yeem nqa tam sim no nyob rau hauv ib txwm muaj thiab txawv txav hauv Circuit Court (xws li luv luv Circuit Court), tab sis nws tsis yog tsim los cuam tshuam qhov cuam tshuam tam sim no.
Daim ntawv thov: Feem ntau yog siv nrog rau kev sib txuas nrog Circuit Court breakers kom ntseeg tau tias muaj qhov cuam tshuam pom tseeb hauv Circuit Court.
Kev Ua Haujlwm: Tsis tuaj yeem ua haujlwm raws li kev thauj khoom; nws tsuas yog qhib thiab kaw thaum lub voj voog tsis muaj hluav taws xob.
Circuit Breaker:
Muaj nuj nqi: tuaj yeem kaw, nqa, thiab tawg tam sim no raws li qhov qub thiab txawv txav hauv Circuit Court (suav nrog luv luv Circuit Court tej yam kev mob) nyob rau hauv ib lub sij hawm. Nws yog tsim los tiv thaiv circuits los ntawm kev puas tsuaj vim overload los yog luv circuits.
Daim ntawv thov: Feem ntau yog siv rau hauv lub ntsiab faib vaj huam sib luag los yog sub-panels los tiv thaiv ib tug neeg circuits. Feem ntau siv ua ke nrog kev sib cais cov keyboards.
Kev Ua Haujlwm Zoo: tuaj yeem ua haujlwm nyob rau hauv ob qho tib si ib txwm thiab txawv txav Circuit Court.
Hauv cov ntsiab lus, qhov hloov pauv hloov pauv, cais hloov pauv, thiab lub tshuab hluav taws xob hluav taws xob txhua tus muaj cov haujlwm tshwj xeeb thiab kev siv. Lub tshuab hloov pauv yog tsim los rau kev hloov pauv, qhov hloov pauv kev sib cais muab qhov kev nyab xeeb cuam tshuam, thiab lub tshuab hluav taws xob tiv thaiv Circuit Court los ntawm kev puas tsuaj. Kev nkag siab txog qhov sib txawv no yog qhov tseem ceeb rau kev ua kom muaj kev nyab xeeb thiab ua haujlwm zoo ntawm cov tshuab hluav taws xob.
▶ 02 Hom kev taw qhia ntawm kev hloov pauv, disconnector thiab Circuit Court breaker
Load keyboards, cais cov keyboards thiab Circuit Court breakers yog muab faib ua high voltage thiab tsawg voltage;
1. Rau lub load hloov:
Muaj rau lub ntsiab ntawm high voltage load switches:
① Cov khoom siv hluav taws xob tsim hluav taws xob muaj hluav taws xob hloov pauv: siv lub zog ntawm qhov tawg arc nws tus kheej los ua cov khoom siv hluav taws xob hauv lub arc chamber tsim cov roj kom tshuab tawm lub arc. Nws cov qauv yog qhov yooj yim, thiab nws tsim nyog rau cov khoom ntawm 35 kV thiab hauv qab no. tus
②Pneumatic high-voltage load hloov: siv cov roj compressed ntawm lub piston kom tshuab tawm lub arc thaum lub sij hawm tawg, thiab nws cov qauv yog yooj yim, haum rau cov khoom ntawm 35 kV thiab hauv qab no. tus
③ Compressed cua hom high-voltage load hloov: siv compressed cua tshuab tawm lub arc, thiab muaj peev xwm ua txhaum ib tug loj tam sim no. Nws cov qauv yog qhov nyuaj, thiab nws tsim nyog rau cov khoom ntawm 60 kV thiab siab dua. ④SF6 high-voltage load hloov: SF6 roj yog siv los tua cov arc, thiab nws qhov kev tawg tam sim no loj, thiab kev ua haujlwm ntawm kev tawg capacitive tam sim no yog qhov zoo, tab sis cov qauv yog qhov nyuaj, thiab nws tsim nyog rau cov khoom ntawm 35 kV thiab saum toj no. tus
⑤ Roj-immersed high-voltage load hloov: Siv lub zog ntawm lub arc nws tus kheej kom decompose thiab gasify cov roj nyob ib ncig ntawm lub arc thiab txias nws mus tua lub arc. Nws cov qauv yog qhov yooj yim, tab sis nws hnyav, thiab nws tsim nyog rau cov khoom siv sab nraum zoov ntawm 35 kV thiab hauv qab no. tus
⑥ Lub tshuab nqus tsev vacuum hom high-voltage load hloov: siv lub tshuab nqus tsev nruab nrab los tua cov arc, muaj hluav taws xob ntev thiab tus nqi siab, thiab tsim nyog rau cov khoom ntawm 220 kV thiab hauv qab no.
Qhov qis-voltage load hloov tseem hu ua hloov fuse pawg. Nws yog qhov tsim nyog rau kev hloov mus rau thiab tawm ntawm cov khoom siv hluav taws xob tsis tu ncua hauv AC fais fab zaus Circuit Court; nws kuj tseem siv tau rau overload thiab luv Circuit Court tiv thaiv kab. Lub Circuit Court breaker yog ua tiav los ntawm kev sib cuag hniav, thiab kev tiv thaiv overload thiab luv luv Circuit Court yog ua tiav los ntawm fuse.
2. Rau cais cov keyboards
Raws li kev sib txawv ntawm kev teeb tsa, cov hluav taws xob hluav taws xob hluav taws xob sib cais tuaj yeem muab faib rau sab nraum zoov high-voltage isolating keyboards thiab sab hauv tsev high-voltage isolating keyboards. Sab nraum zoov high-voltage rho tawm hloov yog hais txog lub high-voltage rho tawm hloov uas tuaj yeem tiv taus cov teebmeem ntawm cua, nag, daus, muaj kuab paug, condensation, dej khov thiab tuab te, thiab yog tsim rau installation ntawm terrace. Raws li cov qauv ntawm nws cov ncej insulating, nws tuaj yeem muab faib ua ib kem disconnectors, ob-kem disconnectors, thiab peb-kem disconnectors.
Ntawm lawv, ib leeg-kem riam hloov ncaj qha siv qhov chaw ntsug raws li cov hluav taws xob rwb thaiv tsev ntawm cov pob txha tawg nyob rau hauv lub overhead busbar. Yog li ntawd, nws muaj qhov pom tseeb qhov zoo ntawm kev txuag thaj chaw nyob, txo cov xaim xaim, thiab tib lub sijhawm qhib thiab kaw qhov xwm txheej tshwj xeeb yog qhov tseeb. Nyob rau hauv cov ntaub ntawv ntawm ultra-high voltage kis tau tus mob, cov nyhuv ntawm kev txuag lub hauv pem teb cheeb tsam yog qhov tseem ceeb tshaj tom qab lub substation txais yuav ib leeg-kem riam hloov.
Hauv cov khoom siv hluav taws xob tsawg, nws yog qhov tsim nyog rau cov khoom siv hluav taws xob tsawg-voltage hluav taws xob xws li cov tsev nyob thiab cov tsev. Lub luag haujlwm tseem ceeb: rhuav thiab txuas cov kab nrog kev thauj khoom
Nws yuav tsum tau muab sau tseg ntawm no hais tias nyob rau hauv lub low-voltage davhlau ya nyob twg lub hwj chim faib, kev rho tawm mus yuav segmented nrog load! Hauv lwm qhov xwm txheej, thiab nyob rau hauv kev kub siab, nws tsis raug tso cai!
3. Rau Circuit Court breakers
High-voltage Circuit Court breakers yog cov khoom siv hluav taws xob tseem ceeb hauv cov chaw tsim hluav taws xob, cov chaw ua haujlwm, thiab chav faib hluav taws xob. ; Thaum lub kaw lus tsis ua haujlwm, nws koom tes nrog kev tiv thaiv relay kom txiav tawm qhov txhaum tam sim no kom tsis txhob muaj qhov nthuav dav ntawm qhov kev sib tsoo.
Yog li ntawd, qhov zoo ntawm high-voltage Circuit Court breaker ncaj qha cuam tshuam rau kev nyab xeeb ntawm lub hwj chim system; muaj ntau hom hluav taws xob hluav taws xob hluav taws xob hluav taws xob, uas tuaj yeem muab faib ua cov roj hluav taws xob hluav taws xob (cov roj hluav taws xob ntau dua, cov roj hluav taws xob tsawg dua) raws li lawv cov hluav taws xob hluav taws xob. , Sulfur hexafluoride Circuit Court breaker (SF6 Circuit Court breaker), nqus Circuit Court breaker, compressed cua Circuit Court breaker, thiab lwm yam.
Lub tshuab hluav taws xob qis hluav taws xob tseem hu ua qhov hloov pauv tsis siv neeg, feem ntau hu ua "air switch", uas kuj yog hais txog qhov hluav taws xob qis hluav taws xob. Nws tuaj yeem siv los faib hluav taws xob hluav taws xob, pib asynchronous motors tsis tu ncua, tiv thaiv cov kab hluav taws xob thiab lub cev muaj zog, thiab lwm yam, thiab tuaj yeem txiav tawm Circuit Court thaum lawv hnyav dhau lossis luv luv lossis qis dua. Nws txoj haujlwm yog sib npaug ntawm lub fuse hloov thiab Kev sib xyaw ntawm overheating thiab underheating relays, thiab lwm yam. Ntxiv mus, nws yog feem ntau tsis tsim nyog los hloov qhov chaw tom qab tawg qhov txhaum tam sim no, thiab tau siv dav.
▶ 03 Qhov sib txawv ntawm qhov hloov pauv hloov, disconnector thiab Circuit Court breaker
1. Lub load hloov tuaj yeem tawg nrog kev thauj khoom thiab muaj kev ua haujlwm ntawm tus kheej-extinguishing arc, tab sis nws lub peev xwm tawg yog me me thiab txwv. tus
2. Feem ntau, qhov hloov pauv tsis tuaj yeem tawg nrog kev thauj khoom. Tsis muaj arc extinguisher nyob rau hauv cov qauv, thiab tseem muaj kev rho tawm cov hloov pauv uas tuaj yeem ua rau lub nra hnyav, tab sis cov qauv sib txawv ntawm qhov hloov pauv, uas yog qhov yooj yim. tus
3. Ob qhov kev hloov pauv thiab qhov hloov pauv tuaj yeem tsim qhov pom tseeb qhov cuam tshuam. Feem ntau cov hluav taws xob hluav taws xob tsis muaj kev sib cais, thiab qee qhov hluav taws xob hluav taws xob muaj cov haujlwm cais tawm. tus
4. Lub tshuab hluav taws xob cais tsis muaj kev tiv thaiv kev ua haujlwm. Kev tiv thaiv ntawm qhov hloov pauv yog feem ntau tiv thaiv los ntawm fuse, tsuas yog tawg sai thiab overcurrent.
5. Lub peev xwm tawg ntawm Circuit Court breaker tuaj yeem ua tau siab heev hauv kev tsim khoom. Nws tsuas yog tso siab rau kev ntxiv tam sim no transformers los koom tes nrog cov khoom siv thib ob rau kev tiv thaiv. Nws tuaj yeem muaj kev tiv thaiv luv luv, tiv thaiv overload, tiv thaiv to thiab lwm yam haujlwm.
