Ijenereyitha kunye nemoto zaziwa njengeentlobo ezimbini ezahlukeneyo zezixhobo zoomatshini. Enye kukuguqula amanye amandla abe ngamandla ombane okuvelisa amandla, ngelixa i-motor iguqula amandla ombane abe ngamandla oomatshini ukutsala ezinye izinto. Nangona kunjalo, ezi zimbini azinakufakwa kwaye zitshintshwe enye kwenye. Ezinye iintlobo zeejeneretha kunye neenjini zinokutshintshwa emva koyilo kunye nohlengahlengiso. Nangona kunjalo, xa kukho impazamo, i-generator iphinda iguqulelwe ekusebenzeni kweemoto, nto leyo ikhusela umva phantsi kwamandla ajikelezayo e-generator esifuna ukuthetha ngayo namhlanje.
Yintoni amandla angasemva?
Njengoko sonke sisazi, ulwalathiso lwamandla ejenereyitha kufuneka luhambe ukusuka kwicala lejenereyitha ukuya kwicala lenkqubo. Nangona kunjalo, ngenxa yesizathu esithile, xa i-injini yomoya ilahlekelwa amandla ashukumisayo kwaye i-outlet ye-jenereyit switch isilela ukuhamba, indlela yombane iyatshintsha ukusuka kwinkqubo ukuya kwi-jenereyitha, oko kukuthi, i-generator iyatshintsha kwi-motor esebenzayo. Ngeli xesha, i-generator ithatha amandla asebenzayo kwinkqubo, ebizwa ngokuba yi-reverse power.
Ubungozi bokubuyisela umva amandla
Ijenereyitha umva ukhuseleko lwamandla kukuba xa ivalve ye-throttle ye-injini yomphunga ivaliwe ngenxa yesizathu esithile kwaye amandla oqobo alahlekile, ijenereyitha ijika ibe yinjini yokuqhuba i-injini yomphunga ukuze ijikeleze. Isantya esiphezulu sokujikeleza kweblade ye-injini ye-steam ngaphandle kwe-steam iya kubangela ukuqhuma kwe-friction, ngakumbi kwinqanaba lokugqibela le-blade, kunokubangela ukushisa okugqithisileyo kwaye kukhokelela kumonakalo wengozi ye-rotor blade.
Ke ngoko, umva umva ukhuseleko lwamandla lukhuselo lwe turbine yomphunga ngaphandle kokusebenza komphunga.
Inkqubo yokhuseleko lwamandla okubuyisela umva wejenereyitha
Inkqubo yokubuyisela umva ukhuseleko lwamandla ikakhulu kukuthintela ijenereyitha ukuba ingakhubeki ngequbuliso isitshixo sokukhutshwa kwejenereyitha phantsi komthwalo othile kwaye ivalve engundoqo ye turbine yomphunga ayivalwanga ngokupheleleyo. Kule meko, iyunithi yejenereyitha ye-injini yomphunga idla ngokubaleka ngesantya esiphezulu nkqu nesantya. Ukuze ugweme le meko, kwezinye iindawo zokukhusela ngaphandle kwephutha le-short-circuit, emva kokuba isignali yesenzo ithunyelwe, iya kuqala isebenze ekuvaleni i-valve engundoqo ye-steam turbine. Emva kokuba umva amandla * * * ezenzo zejenereyitha, iyakwenza kunye nevalve enophawu oluvala ivalve engundoqo yomphunga, yenze inkqubo yokubuyisela umva ukhuseleko lwamandla emva kwexesha elifutshane, kwaye isenzo siya kusebenza ngokumisa ngokupheleleyo.
Umahluko phakathi kokhuseleko lwamandla omva kunye nokhuseleko lwamandla okubuyisela umva
Ukubuyisela umva ukhuseleko lwamandla kukuthintela ijenereyitha ekubeni ijike ibe yinjini emva kombane obuya umva, ukuqhuba i-injini yomphunga ukuba ijikeleze kwaye ibangele umonakalo kwiinjini yomphunga. Kuhlaziyo lokugqibela, ndinoloyiko lokuba i-prime mover iya kuqhutywa yinkqubo ukuba ayinamandla!
Inkqubo yokukhusela amandla okubuyisela umva kukuthintela i-turbine overspeed ebangelwa yivalve ye-throttle engundoqo ingavalwanga ngokupheleleyo emva kokuba iyunithi yejenereyitha iqhawulwe ngequbuliso, ngoko ke amandla angasemva asetyenziselwa ukuphepha. Kuhlahlelo lokugqibela, ndiyoyika ukuba amandla amaninzi omqhubi ophambili aya kukhokelela kwisantya esiphezulu seyunithi.
Ke ngoko, xa sithetha ngokungqongqo, umva umva ukhuseleko lwamandla luhlobo lokhuselo lombane wejenereyitha, kodwa ikakhulu ikhusela i-injini yomphunga. Inkqubo yokubuyisela umva ukhuseleko lwamandla ayilokhuselo, kodwa yinkqubo yesenzo esetiweyo ukuze kuqatshelwe inkqubo, ekwabizwa ngokuba yinkqubo yokukhubeka, esetyenziswa ngokubanzi kwimowudi yokuvala.
Isitshixo kukuba nje ukuba amandla angasemva afikelela kwixabiso elibekiweyo, liya kuhamba. Ukongeza ekufikeleleni kwixabiso elibekiweyo, inkqubo yokubuyisela umva amandla ikwafuna ukuba kuvalwe ivalve ye-throttle ye-injini yomphunga. Ke ngoko, isenzo samandla esingasemva kufuneka siphetshwe ngexesha loqhagamshelo lwegridi ngexesha lokuqalisa kweyunithi.
Le yimisebenzi yokukhusela i-generator reverse kunye nenkcazo ye-generator reverse power. Kwijenereyitha ye-injini yomphunga kwigridi eqhagamshelweyo yokusebenza, iya kusebenza njengemoto ehambelanayo emva kokuba ivalve ye-throttle ye-injini yomphunga ivaliwe: ukufunxa amandla asebenzayo kwaye utsale i-injini yomphunga ukujikeleza, enokuthumela amandla asebenzayo kwinkqubo. Njengoko ivalve ye-throttle engundoqo yeinjini yomphunga ivaliwe, iblade yomsila weinjini yomphunga inokukhuhlana nomphunga oshiyekileyo ukwenza ilahleko yokuqhushumba, yonakaliswe kubushushu obugqithisileyo ngexesha lokusebenza kwexesha elide. Ngeli xesha, ukukhuselwa umva kunokukhusela i-injini yomphunga kumonakalo.
Ixesha lokuposa: Jan-10-2022
