Ukubuyisela umva amandla ejenereyitha zeDizili

Xa ijenereyitha inamandla abuyela umva (amanqaku ombane angaphandle kwijenereyitha, oko kukuthi ijenereyitha iba yinjini), amandla angasemva akhusela isaphuli sesekethe ekukhubekeni.Umbane wesigaba esithathu kunye neempawu zangoku zesigaba ezibini kufuneka ziqokelelwe.

Ngenxa yeendlela ezahlukeneyo zamandla aphambili, iijeneretha ezahlukeneyo zinokwenziwa.I-Hydrogenerators inokwenziwa ngamanzi kunye nee turbines.Ngenxa yomthamo ohlukeneyo wedama kunye nokwehla, ii-hydro-generator ezinomthamo ohlukeneyo kunye nesantya zingenziwa.Ukusebenzisa amalahle, i-oyile kunye nezinye izixhobo, kunye ne-boilers kunye neenjini ze-turbo-steam, iijenereyitha ze-steam turbine zingenziwa, ubukhulu becala iimotor ezinesantya esiphezulu (3000rpm).Kukwakho neejenereyitha ezisebenzisa ilanga, umoya, iathom, i-geothermal, i-tidal kunye ne-bioenergy.Ukongeza, ngenxa yemigaqo yokusebenza eyahlukeneyo yeejeneretha, zahlulwe zaba ziijeneretha ze-DC, iijeneretha ezingafaniyo kunye neejeneretha ezihambelanayo.Iijenereyitha ezinkulu ezisetyenziswa ngokubanzi zijenereyitha ezihambelanayo.

Umenzi wejenereyitha Amandla angasemva

Njengoko sonke sisazi, ulwalathiso lwamandla ejenereyitha kufuneka luhambe ukusuka kwicala lejenereyitha ukuya kwicala lenkqubo.Kodwa ngenxa yesizathu esithile, xa i-injini yomoya ilahlekelwa amandla kwaye i-outlet ye-generator switch ayihambi, indlela yokutshintsha kwamandla ukusuka kwinkqubo ukuya kwi-generator, oko kukuthi, i-generator iba yinjini esebenzayo.Kweli nqanaba ijenereyitha itsala amandla asebenzayo kwinkqubo, ebizwa ngokuba yi-inverse power.

01. Iingozi zonikezelo lwamandla umva.

Ukhuseleko lwamandla ejenereyitha oluguqukileyo lubhekisa kwinto yokuba xa i-injini yomoya iphelelwa ngamandla ngenxa yokuvalwa kwevalvu engundoqo ngesizathu esithile, ijenereyitha ijika ibe yinjini yokuqhuba i-iturbine ukuze ijikeleze.I-injini ye-injini ijikeleza ngesantya esiphezulu ngaphandle komphunga, okuya kubangela ukuqhuma kwe-friction, ngakumbi i-blade yesigaba sokugqibela, esinokubangela ukushisa kunye nokonakalisa i-rotor blade.Ke ngoko ukhuseleko lwamandla omva lukhuselo lwe turbine ngaphandle kokubaleka.

Inkqubo yokukhusela amandla e-02.Generator reverse.

Inkqubo yejenereyitha echasene nokhuseleko lwamandla ikakhulu kukuthintela ijenereyitha ukuba ivule ngequbuliso iswitshi yokuphuma kwemoto, kwaye zonke iivalvu eziphambili zeinjini yomoya azikwazi ukuvalwa phantsi komthwalo othile.Kule meko, isethi yejenereyitha ye-injini yomoya ithanda ukugqithiswa okanye ngaphandle kolawulo.Ukunqanda oku, kukhuseleko oluthile olungelulo olufutshane lwesiphambeko, luvala kuqala ivalve engundoqo yeinjini yomoya emva kokuthumela umqondiso wesenzo.Emva kokuba i-generator inverse power relay isetyenzisiwe, umqondiso wokuvala ivalve engundoqo yenziwe kwaye isango lenziwe.Emva kwexesha elifutshane lomda, inkqubo yokukhusela amandla echaseneyo yenziwa kwaye umsebenzi umiswe ngokupheleleyo.

03.Ukubuyisela umva ukhuseleko lwamandla kunye neprogram yokubuyisela umva ukukhuselwa kwamandla.

Reverse ukhuseleko lwamandla kukuthintela ijenereyitha ukusuka kumandla angasemva ukuya kwinjini, ukuqhuba ukujikeleza kweinjini yomoya, okukhokelela kumonakalo weinjini yomoya.Ngapha koko, ndiyoyika ukuba i-prime mover iya kuqhuba nenkqubo ngenxa yokunqongophala kwamandla! Ukhuseleko lwamandla olucwangcisiweyo lwenzelwe ukuthintela i-iturbine ukusuka kwi-overspeed emva kokuba iseti yejenereyitha iqhawulwe ngequbuliso kwaye ivalve engundoqo ivalwe ngokupheleleyo, enokuthi ithintele isantya esiphezulu. kuphetshwe ngokusebenzisa amandla angasemva.Eyona nto iphambili kukuba i-prime mover inamandla kakhulu ukuba ibangele ukuba iyunithi ibaleke ngesantya esiphezulu!

Ukuthetha ngokungqongqo, umva ukhuseleko lwamandla lukhuselo lwe-relay yejenereyitha, kodwa ikakhulu ukukhusela i-iturbine.Inkqubo yokubuyisela umva ukhuseleko lwamandla ayilokhuselo, kodwa yinkqubo yesenzo emiselwe ukufezekisa uhambo lwenkqubo, ekwabizwa ngokuba luhambo lwenkqubo, oluqhele ukusetyenziswa kwimowudi yokuvala.