Choyamba, tiyenera kuchepetsa kukula kwa zokambirana kuti tipewe kusokoneza kwambiri. Jenereta yomwe yafotokozedwa apa ikunena za jenereta yopanda maburashi, magawo atatu a AC synchronous generator, yomwe imatchedwa "jenereta".
Jenereta yamtunduwu imakhala ndi magawo atatu, omwe atchulidwa pazokambirana zotsatirazi:
Jenereta yayikulu, yogawidwa kukhala stator yayikulu ndi rotor yayikulu; Rotor yaikulu imapereka mphamvu yamagetsi, ndipo stator yaikulu imapanga magetsi kuti apereke katunduyo; Exciter, yogawidwa mu exciter stator ndi rotor; The exciter stator imapereka mphamvu ya maginito, rotor imapanga magetsi, ndipo itatha kukonzedwa ndi commutator yozungulira, imapereka mphamvu ku rotor yaikulu; Automatic Voltage Regulator (AVR) imazindikira mphamvu yamagetsi ya jenereta yayikulu, imawongolera ma coil a stator, ndikukwaniritsa cholinga chokhazikitsa voteji ya stator yayikulu.
Kufotokozera kwa AVR voltage stabilization work
Cholinga cha AVR ndikusunga mphamvu yamagetsi yokhazikika ya jenereta, yomwe imadziwika kuti "voltage stabilizer".
ntchito yake ndi kuonjezera stator panopa wa exciter pamene linanena bungwe voteji wa jenereta ndi otsika kuposa mtengo anapereka, amene ali ofanana ndi kuonjezera chisangalalo panopa wa rotor waukulu, kuchititsa voteji waukulu jenereta kuwuka kwa mtengo anapereka; M'malo mwake, kuchepetsa chisangalalo panopa ndi kulola voteji kuchepa; Ngati voteji linanena bungwe la jenereta ndi wofanana mtengo anapereka, ndi AVR amakhala linanena bungwe alipo popanda kusintha.
Kuphatikiza apo, malinga ndi ubale wapakati pakati pa masiku ano ndi magetsi, katundu wa AC akhoza kugawidwa m'magulu atatu:
Resistive katundu, kumene panopa ali mu gawo ndi voteji ntchito kwa izo; Inductive katundu, gawo la pano likutsalira kumbuyo kwa voteji; Capacitive katundu, gawo la panopa lili patsogolo pa voteji. Kuyerekeza kwa mawonekedwe atatu a katundu kumatithandiza kumvetsetsa bwino katundu wa capacitive.
Kwa katundu wotsutsa, katundu wokulirapo, kuwonjezereka kwamakono komwe kumafunikira pa rotor yaikulu (kuti akhazikitse mphamvu yamagetsi ya jenereta).
Muzokambirana zotsatila, tidzagwiritsa ntchito chisangalalo chomwe chikufunika pa katundu wotsutsa ngati ndondomeko yowonetsera, zomwe zikutanthauza kuti zazikulu zimatchulidwa kuti zazikulu; Timachitcha chaching'ono kuposa icho.
Pamene katundu wa jenereta ndi inductive, wozungulira waukulu adzafunika kwambiri chisangalalo panopa kuti jenereta kukhala khola linanena bungwe voteji.
Capacitive katundu
Pamene jenereta ikukumana ndi katundu wa capacitive, mphamvu yowonjezera yomwe imafunidwa ndi rotor yaikulu ndi yaying'ono, zomwe zikutanthauza kuti phokoso lachisangalalo liyenera kuchepetsedwa kuti likhazikitse mphamvu yamagetsi ya jenereta.
N’chifukwa chiyani zimenezi zinachitika?
Tiyenerabe kukumbukira kuti panopa pa katundu capacitive ndi patsogolo voteji, ndipo izi kutsogolera mafunde (akuyenda mwa stator waukulu) adzapanga anachititsa panopa pa ozungulira waukulu, zomwe zimachitika kuti zabwino superimposed ndi chisangalalo panopa, utithandize maginito ozungulira waukulu. Chifukwa chake mphamvu yochokera ku exciter iyenera kuchepetsedwa kuti ikhalebe yokhazikika yotulutsa voteji ya jenereta.
Kukula kwa katundu wa capacitive, kumachepetsa kutulutsa kwa exciter; Pamene katundu wa capacitive akuwonjezeka kufika pamlingo wina, zotsatira za exciter ziyenera kuchepetsedwa mpaka ziro. Zotsatira za exciter ndi zero, zomwe ndi malire a jenereta; Panthawi imeneyi, voteji linanena bungwe la jenereta sadzakhala kudzikonda khola, ndipo mtundu uwu wa magetsi si oyenerera. Izi zimatchedwanso' under excitation limitation '.
Jenereta imatha kuvomereza mphamvu zolemetsa zochepa; (Zowona, kwa jenereta yodziwika, palinso malire pakukula kwa katundu woletsa kapena wowonjezera.)
Ngati pulojekiti ikuvutitsidwa ndi katundu wa capacitive, ndizotheka kusankha kugwiritsa ntchito magwero a magetsi a IT omwe ali ndi mphamvu zochepa pa kilowatt, kapena kugwiritsa ntchito inductors kuti apereke malipiro. Musalole kuti jenereta igwire ntchito pafupi ndi "pansi pa malire a chisangalalo".
Nthawi yotumiza: Sep-07-2023
