Lub tshuab brushless excitation yog ib qho kev daws teeb meem siv dav dav rau kev muab hluav taws xob rau cov tshuab hluav taws xob sib dhos hauv cov chaw tsim hluav taws xob hydropower, cov chaw tsim hluav taws xob thermal, thiab cov tshuab hluav taws xob industrial. Los ntawm kev tshem tawm cov txhuam thiab cov nplhaib slip, nws txhim kho kev ntseeg tau zoo, txo cov kev xav tau txij nkawm, thiab txhim kho kev nyab xeeb hauv kev ua haujlwm.
Niaj hnub no, cov tshuab brushless excitation yog tus qauv hauv cov chav tsim hluav taws xob nruab nrab thiab loj vim lawv yooj yim kho tshuab thiab lub neej ua haujlwm ntev.
1. Kev Teeb Tsa Yooj Yim
Ib qho kev siv tshuab brushless excitation feem ntau muaj:
Tsis Siv Neeg Voltage Regulator (AVR)
AC Exciter
Kev Sib Dhos Rectifier (Choj Diode)
Lub Tshuab Hluav Taws Xob Tseem Ceeb Rotor Field Winding
Tag nrho cov khoom sib hloov tau teeb tsa rau ntawm tib lub ncej li lub tshuab hluav taws xob tseem ceeb, tsim cov qauv sib xyaw ua ke.
2. Txoj Cai Ua Haujlwm
Lub tshuab brushless excitation ua haujlwm raws li nram no:
2.1 Kev Tshawb Pom Hluav Taws Xob
Lub AVR tsis tu ncua saib xyuas lub generator davhlau ya nyob twg voltage.
2.2 Kev Tswj Xyuas Lub Zog
Yog tias qhov hluav taws xob tsis sib xws ntawm tus nqi teeb tsa, AVR kho qhov DC tam sim no muab rau lub zog exciter teb winding.
2.3 Kev Tsim Hluav Taws Xob AC
Lub AC exciter tsim peb-theem alternating tam sim no hauv nws lub armature.
2.4 Kev Kho Kom Rov Qab Zoo
Cov zis AC peb-theem raug kho kom raug rau hauv DC los ntawm lub choj diode tig uas tau teeb tsa rau ntawm lub qag.
2.5 Kev Muab Khoom Siv Hauv Thaj Chaw Tseem Ceeb
Cov hluav taws xob DC rectified pub ncaj qha mus rau hauv lub rotor winding ntawm lub tshuab hluav taws xob tseem ceeb, tsim kom muaj lub zog sib nqus uas xav tau rau kev tsim hluav taws xob.
Vim tias qhov kev kho kom raug tshwm sim ntawm lub qhov tig, tsis tas yuav muaj txhuam lossis cov nplhaib plam.
3. Cov Yam Ntxwv Tseem Ceeb
3.1 Cov Qauv Tsis Txhuam
Qhov tsis muaj txhuam tshem tawm qhov kev sib txhuam, hmoov av carbon, thiab teeb meem hluav taws xob.
3.2 Kev Ntseeg Siab
Nrog tsawg dua qhov sib txuas lus, lub kaw lus ua tiav qhov kev ua tsis tiav qis dua thiab lub sijhawm ua haujlwm ntev dua.
3.3 Kev Saib Xyuas Tsawg
Kev saib xyuas tsis tu ncua feem ntau yog kev tshuaj xyuas cov diodes uas tig thiab cov kev sib txuas hluav taws xob.
3.4 Kev Ua Tau Zoo Dynamic
Txawm hais tias tsis ceev npaum li cov tshuab ua kom muaj zog zoo li qub, kev ua kom tsis muaj zog brushless muab cov lus teb txaus rau feem ntau ntawm cov dej fais fab thiab cov ntawv thov kev lag luam.
4. Cov txiaj ntsig hauv Kev Siv Hluav Taws Xob Hydropower
Hauv cov chaw tsim hluav taws xob hydropower, tshwj xeeb tshaj yog cov uas nyob hauv cov roob lossis thaj chaw deb, brushless excitation muaj cov txiaj ntsig zoo rau kev ua haujlwm:
Txo cov haujlwm txij nkawm
Kev ua haujlwm ruaj khov mus sij hawm ntev
Kev nyab xeeb ua haujlwm zoo dua
Kev hloov pauv siab rau kev hloov pauv ntawm qhov thauj khoom
Rau cov chaw nres dej uas khiav ntawm tus dej lossis nruab nrab, qhov twg kev ntseeg tau thiab yooj yim yog qhov tseem ceeb, cov tshuab tsis txhuam feem ntau yog qhov kev xaiv zoo tshaj plaws.
5. Kev Tiv Thaiv thiab Kev Saib Xyuas Kev Ua Haujlwm
Cov tshuab hluav taws xob niaj hnub no muaj cov yam ntxwv tiv thaiv siab heev, suav nrog:
Over-excitation limiter
Tus neeg txwv tsis pub ua haujlwm qis dua
Kev tiv thaiv overcurrent teb
Kev tiv thaiv kev poob siab
Kev kuaj pom qhov tsis ua haujlwm ntawm diode
Kev saib xyuas qhov kub ntawm lub rotor
Cov AVR digital txhim kho kev tswj hwm qhov tseeb thiab kev kuaj mob ntawm lub kaw lus, txhim kho kev nyab xeeb ntawm tag nrho lub tshuab.
6. Cov Qauv Kev Loj Hlob
Cov txheej txheem kev txhawb nqa brushless niaj hnub no tab tom hloov zuj zus mus rau:
Kev tswj hwm AVR digital tag nrho
Kev tswj hwm redundant
Kev saib xyuas online thiab kev kuaj mob deb
Kev koom ua ke nrog cov tshuab automation ntawm cov nroj tsuag
Thaum cov kev xav tau ntawm lub grid ua nruj dua thiab kev nkag mus rau hauv lub zog tshiab nce ntxiv, kev tswj hwm kev txawj ntse ua lub luag haujlwm tseem ceeb hauv kev ruaj khov ntawm voltage thiab kev tswj hwm lub zog reactive.
Lub tshuab hluav taws xob brushless excitation system muab kev daws teeb meem ruaj khov thiab yooj yim txij nkawm rau kev xa hluav taws xob synchronous generator. Nws tsim qauv yooj yim, ua ke nrog cov thev naus laus zis tswj digital niaj hnub, ua kom ntseeg tau tias kev ua haujlwm txhim khu kev qha, muaj kev nyab xeeb, thiab ua haujlwm tau zoo.
Hauv kev siv hluav taws xob thiab kev tsim hluav taws xob hauv kev lag luam, kev ua kom tsis muaj txhuam tseem yog ib qho ntawm cov kev daws teeb meem ua kom muaj zog tshaj plaws thiab siv dav thoob ntiaj teb.
Lub sijhawm tshaj tawm: Lub Peb Hlis-04-2026
