Hauv kev xa tawm hluav taws xob thiab kev xa tawm, kev ua haujlwm sib txuas ntawm lub tshuab hluav taws xob yog ib qho kev ua haujlwm tseem ceeb, uas tuaj yeem txhim kho cov khoom siv hluav taws xob muaj kev ntseeg siab, ua kom zoo tshaj qhov kev faib khoom, thiab siv tag nrho cov cuab yeej muaj peev xwm. Tshwj xeeb tshaj yog rau kev lag luam thiab kev lag luam scenarios uas xav tau cov khoom siv hluav taws xob ruaj khov, kev paub txog cov xwm txheej thiab kev ua haujlwm tsim nyog ntawm kev ua haujlwm ntawm lub tshuab hluav taws xob sib txuas yog qhov tseem ceeb los ua kom muaj kev nyab xeeb thiab ua haujlwm tau zoo. Raws li cov kws tshaj lij kev lag luam ntawm cov khoom siv hluav taws xob xa tawm thiab xa tawm, JINShanMEN TECHNOLOGY CO., LTD muab kev txhawb nqa kev tshaj lij rau kev ua haujlwm sib luag thaum ua haujlwm siab - zoo transformers. Lub tuam txhab tsuas yog tsim cov roj immersed fais fab transformers, qhuav-hom fais fab transformers, roj immersed peb-dimensional coiled fais fab transformers, qhuav-hom peb-dimensional coiled fais fab transformers, mining explosion- pov thawj qhuav-hom transformers,{ morusst 1}, mining alloy fais fab transformers, nyob rau hauv load peev xwm tswj fais fab transformers, locomotive qhuav{12}} hom transformers, raws li zoo raws li prefabricated substations, modular substations, cua zog lub thawv hom substations, siab thiab tsawg voltage switchgear thiab lwm yam kis tau tus mob thiab tis khoom.
I. Tej yam kev mob rau Transformer Parallel Operation
Txhawm rau kom muaj kev nyab xeeb, ruaj khov thiab ua haujlwm zoo ntawm kev hloov pauv, plaub lub ntsiab lus yuav tsum tau ua. Yog tias ib qho ntawm cov xwm txheej no tsis txaus siab, nws yuav ua rau muaj kev cuam tshuam tam sim no, tsis sib xws ntawm kev thauj khoom, nce lub zog poob, thiab txawm tias muaj kev nyab xeeb loj xws li transformer burnout. Cov3 theem 100kva transformer, uas yog dav siv nyob rau hauv me me thiab nruab nrab -sized industrial thiab coj mus muag tej yaam num, kuj yuav tsum tau nruj me ntsis raws li tej yam kev mob thaum ua hauj lwm nyob rau hauv parallel. Tib yam siv rau cov roj immersed fais fab transformer, uas yog dav siv nyob rau hauv sab nraum zoov thiab loj - muaj peev xwm fais fab mov scenarios.
1. Cov pab pawg sib txuas zoo ib yam
Cov pab pawg sib txuas txiav txim siab theem kev sib raug zoo ntawm thawj thiab theem nrab voltages ntawm lub transformer. Yog tias ob lub tshuab hloov pauv nrog cov pab pawg sib txawv sib txuas ua ke, qhov sib txawv loj ntawm qhov sib txawv (feem ntau mus txog 51.8% ntawm cov kab hluav taws xob) yuav tshwm sim nyob rau hauv theem ob. Vim lub me me nyob rau hauv tsis kam ntawm lub transformer, ib tug circulating tam sim no ob peb zaug cov rated tam sim no yuav generated instantly, uas yuav sai heev overheat lub winding thiab hlawv tawm lub transformer. Qhov no yog qhov tseem ceeb tshaj plaws rau kev ua haujlwm ntawm lub tshuab hluav taws xob sib txuas thiab yuav tsum tsis txhob ua txhaum. Txawm hais tias nws yog 3 theem 100 kva transformer lossis roj immersed fais fab transformer, qhov sib xws ntawm pawg sib txuas yuav tsum tau kuaj ua ntej ua ntej ua haujlwm sib npaug.
2. Sib npaug Voltage Ratio
Qhov sib piv voltage (transformation ratio) yog hais txog qhov piv ntawm qhov ntsuas hluav taws xob ntawm thawj sab mus rau theem nrab ntawm lub transformer. Yog tias ob lub tshuab hloov pauv nrog qhov sib txawv ntawm qhov sib txawv ntawm qhov sib npaug, qhov sib txuas tsis tu ncua yuav raug tsim nyob rau hauv qhov thib ob winding txawm tias lawv tsis muaj -load. Qhov kev siv tam sim no yuav tsis tsuas yog nce qhov tsis muaj -load poob ntawm lub transformer tab sis kuj tuav lub peev xwm ntawm cov cuab yeej, txo cov load- nqa peev xwm ntawm lub transformer. Raws li cov qauv tsim hauv lub tebchaws, qhov sib txawv ntawm qhov sib txawv ntawm qhov sib piv ntawm cov khoom sib txuas sib txuas yuav tsum tsis pub tshaj ± 0.5% (thaum lub kais hloov nyob rau hauv tib txoj hauj lwm). Piv txwv li, thaum ob 3 theem 100 kva transformers txuas nrog rau tib lub sijhawm, lawv qhov ntsuas hluav taws xob yuav tsum tau hloov kho rau tib tus nqi kom tsis txhob muaj cov khoom siv tam sim no. Tib qhov yuav tsum tau siv rau kev ua haujlwm sib luag ntawm cov roj immersed fais fab transformers.
3. Sib npaug feem pua ntawm impedance Voltage
impedance voltage (tseem hu ua luv-circuit voltage) yog ib qho tseem ceeb parameter qhia txog impedance yam ntxwv ntawm transformer winding. Lub load faib ntawm parallel transformers yog inversely proportional rau lawv impedance voltage feem pua. Yog hais tias tus impedance voltage feem pua ntawm ob transformers sib txawv, lub transformer nrog ib tug me me impedance voltage yuav dais ntau load, thaum lub transformer nrog ib tug loj impedance voltage yuav underloaded, ua rau cov khoom pov tseg ntawm lub peev xwm. Feem ntau, qhov sib txawv ntawm qhov impedance voltage feem pua ntawm cov khoom siv hluav taws xob sib txuas yuav tsum tsis pub tshaj ± 10%. Hauv kev siv tswv yim, peb tuaj yeem kho qhov kais dej ntawm lub transformer kom qhov feem pua ntawm impedance voltage yuav zoo ib yam, thiaj li los xyuas kom meej qhov tsim nyog tis ntawm load. Txoj kev hloov kho no kuj tseem siv tau rau kev ua haujlwm sib luag ntawm 3 theem 100 kva transformer thiab roj immersed fais fab transformer, uas tuaj yeem muab kev ua si tag nrho rau lub peev xwm ntawm cov khoom siv.
4. Peev Xwm piv tsis tshaj 3: 1
Lub peev xwm piv ntawm parallel transformers feem ntau yuav tsum tsis pub tshaj 3: 1. Qhov no yog vim hais tias tus nqi impedance ntawm transformers nrog lub peev xwm sib txawv txawv heev, uas yuav ua rau cov khoom tsis sib xws. Tsis tas li ntawd, los ntawm kev xav ntawm kev ua haujlwm thiab kev saib xyuas, me me - transformers muaj peev xwm tsis tuaj yeem ua lub luag haujlwm zoo thaum lub peev xwm loj dhau. Txawm li cas los xij, yog tias ob qho tib si hloov pauv tsis dhau qhov ntsuas load thaum lub sijhawm ua haujlwm, qhov peev xwm piv tau yuav ntau dua 3: 1. Nws yuav tsum tau muab sau tseg tias nyob rau hauv ib txwm muaj xwm txheej, lub impedance voltage ntawm ib tug loj - muaj peev xwm transformer yog me dua li ntawm ib tug me me - muaj peev xwm transformer, thiab lub impedance kaum ntawm lub luv luv -circuit impedance ntawm txhua transformer yuav tsum sib npaug zos kom ntseeg tau tias lub thib ob tam sim no nyob rau hauv tib theem thiab cov khoom siv yog vim li cas.
II. Rational Configuration ntawm Transformer Parallel Operation Modes
Transformers yuav tsim hluav taws xob poob thaum lub sijhawm ua haujlwm, thiab ntau lub tshuab hluav taws xob sib txuas ua ke, qhov ntau dua qhov poob. Yog li ntawd, tus naj npawb ntawm parallel transformers yuav tsum tau kho raws li qhov tseeb load hloov nyob rau hauv lub hwj chim mov system. Lub hauv paus ntawm kev tsim qauv tsim nyog yog kom txo qis tag nrho cov kev poob ntawm lub transformer thiab paub txog kev lag luam kev lag luam. Lub hauv paus ntsiab lus no yog sib npaug rau kev ua haujlwm sib luag ntawm 3 theem 100 kva transformer thiabroj immersed hwj chim transformer, uas tuaj yeem txo cov nqi ua haujlwm ntawm lub zog hluav taws xob.
1. Hom Transformer Losses
Transformer poob feem ntau muab faib ua ob hom: hlau poob thiab tooj liab poob. Hlau poob yuav luag tsis hloov thaum lub sijhawm ua haujlwm ib txwm muaj, tseem hu ua qhov poob tas li; tooj liab poob hloov nrog lub square ntawm lub load tam sim no, kuj hu ua variable poob. Qhov kev ua tau zoo ntawm lub transformer yog qhov siab tshaj plaws thaum qhov poob tas li yog sib npaug ntawm qhov sib txawv ntawm qhov poob, uas yog lub xeev kev lag luam tshaj plaws ntawm lub transformer. Tsis tas li ntawd, transformer poob yuav muab faib ua active poob thiab reactive poob. Reactive zog noj los ntawm cov khoom siv yog muab los ntawm lub hwj chim system. Lub neej ntawm reactive hwj chim yuav ua rau kom cov tam sim no nyob rau hauv lub system, yog li ua rau lub active poob ntawm lub hwj chim system.
2. Kev txiav txim siab ntawm Parallel Transformer Quantity
Thaum txiav txim siab tus naj npawb ntawm cov hloov pauv hloov pauv los ntawm qhov kev xav ntawm kev lag luam, nws yog ib qho tsim nyog yuav tsum xav txog ob qho tib si active poob thiab reactive poob, thiab hloov reactive poob mus rau hauv active poob los ntawm cov reactive economic sib npaug (kq, unit: kW / kVar). Rau substations, kq feem ntau yog 0.02 ~ 0.15. Tus naj npawb tshwj xeeb ntawm parallel transformers yog txiav txim siab raws li ob qho xwm txheej hauv qab no:
(1) Transformers nrog tib tus qauv thiab muaj peev xwm
Thaum cov khoom sib txuas sib txuas muaj cov qauv qub thiab muaj peev xwm, tus naj npawb ntawm kev khiav hauj lwm transformers nyob rau hauv txawv load tej yam kev mob yuav txiav txim tau los ntawm cov nram qab no mis: Thaum lub load nce mus rau S > n × Sn, nws yog ntau yig mus ntxiv ib tug ntxiv transformer rau lub parallel lag luam; Thaum lub load txo mus rau S < (n-1) × Sn, nws yog kev lag luam ntau dua los txiav tawm ib qho kev hloov pauv los ntawm kev ua haujlwm sib luag. Ntawm lawv, S yog tag nrho cov peev txheej ntawm lub tshuab hloov pauv (kVA), Sn yog qhov ntsuas peev xwm ntawm txhua qhov hloov pauv (kVA), thiab n yog tus naj npawb ntawm kev ua haujlwm transformers. Piv txwv li, thaum ntau 3 theem 100 kva transformers txuas nrog nyob rau hauv parallel, tus naj npawb ntawm kev khiav hauj lwm transformers tuaj yeem hloov kho raws li qhov kev hloov ntawm tag nrho cov load los xyuas kom meej kev lag luam.
(2) Transformers nrog txawv qauv thiab muaj peev xwm
Thaum cov khoom sib txuas sib txuas muaj cov qauv sib txawv thiab muaj peev xwm, lawv cov hlau poob tsis tas yuav tsum sib npaug, thiab cov khoom xa tawm yog qhov nyuaj, yog li nws nyuaj rau txiav txim siab tus naj npawb ntawm kev khiav hauj lwm transformers los ntawm ib qho qauv. Txoj kev ua tau zoo yog kos cov nkhaus ntawm tag nrho cov kev poob ntawm txhua lub transformer thiab tag nrho cov poob ntawm ntau qhov sib npaug ntawm cov transformers nrog lub load, thiab txiav txim seb tus naj npawb ntawm cov transformers yuav tsum tau muab tso rau hauv kev ua haujlwm raws li qhov nkhaus (tus naj npawb ntawm transformers sib thooj rau qhov poob qis tshaj nyob rau hauv lub load tam sim no yog qhov tsim nyog tshaj plaws). Tsis tas li ntawd, cov kev cai tau teev tseg tias kom txo cov kev ua haujlwm hauv ib hnub thiab hmo ntuj, lub sijhawm kaw ntawm lub tshuab hloov pauv yuav tsum tsis pub tsawg dua 2 ~ 3 teev. Txoj kev no kuj tseem siv tau rau kev ua haujlwm sib luag ntawm cov roj immersed fais fab transformers ntawm cov qauv sib txawv thiab muaj peev xwm.
III. Xaus
Kev nyab xeeb thiab kev lag luam thaum ua haujlwm ntawm transformers yog tus yuam sij rau kev ua haujlwm ruaj khov ntawm lub zog xa hluav taws xob thiab kev faib khoom. Nws yog ib qho tsim nyog yuav tsum nruj me ntsis raws li plaub lub ntsiab lus ntawm cov kev sib txuas zoo ib yam, qhov sib npaug ntawm qhov sib npaug, qhov feem pua ntawm impedance voltage, thiab muaj peev xwm tsis tshaj 3: 1. Nyob rau tib lub sijhawm, tus naj npawb ntawm cov hloov pauv hloov pauv yuav tsum tsim nyog raws li qhov hloov pauv kom txo qis zog poob. Raws li cov kws tshaj lij kev tsim khoom ntawm cov khoom siv hluav taws xob sib txuas thiab xa tawm,JINSHANMEN TECHNOLOGY CO., LTDmuab siab -zoo 3 theem 100 kva transformers, roj immersed fais fab transformers thiab lwm yam khoom, thiab muab kev cob qhia kev cob qhia rau kev ua hauj lwm sib npaug ntawm transformers, pab cov neeg siv kom muaj kev nyab xeeb, muaj txiaj ntsig thiab nyiaj txiag lub zog.