Ijenereyitha kunye nemoto zaziwa njengeentlobo ezimbini ezahlukeneyo zezixhobo zoomatshini. Enye kukuguqula amanye amandla abe ngamandla ombane ukuze kuveliswe umbane, ngelixa imoto iguqula amandla ombane abe ngamandla oomatshini ukuze kutsalwe ezinye izinto. Nangona kunjalo, ezi zimbini azinakufakelwa kwaye zitshintshwe. Ezinye iintlobo zeejenereyitha kunye neemoto zinokutshintshiswana emva koyilo kunye nokuguqulwa. Nangona kunjalo, xa kukho impazamo, ijenereyitha ikwaguqulwa ibe kukusebenza kwemoto, olu lukhuselo olubuyela umva phantsi kwamandla abuyela umva ejenereyitha esifuna ukuthetha ngayo namhlanje.
Yintoni amandla abuyela umva?
Njengoko sonke sisazi, indlela yamandla ejenereyitha kufuneka ihambe ukusuka kwicala lejenereyitha ukuya kwicala lenkqubo. Nangona kunjalo, ngesizathu esithile, xa i-turbine ilahlekelwa ngamandla okuqhuba kwaye iswitshi ye-outlet yejenereyitha ingaphumeleli, indlela yamandla iyatshintsha ukusuka kwinkqubo ukuya kwijenereyitha, oko kukuthi, ijenereyitha itshintshela kwimoto esebenzayo. Ngeli xesha, ijenereyitha ifunxa amandla asebenzayo kwinkqubo, ebizwa ngokuba yi-reverse power.
Umonakalo wamandla abuyela umva
Ukhuseleko lwamandla okubuyela umva kwijenereyitha kukuba xa ivalvu ephambili ye-throttle ye-turbine yomphunga ivaliwe ngenxa yesizathu esithile kwaye amandla okuqala elahlekile, ijenereyitha ijika ibe yimoto yokuqhuba i-turbine yomphunga ukuba ijikeleze. Ukujikeleza ngesantya esiphezulu kwe-blade ye-turbine yomphunga ngaphandle komphunga kuya kubangela ukungqubana kokuqhuma, ingakumbi kwi-blade yesigaba sokugqibela, kunokubangela ubushushu obugqithisileyo kwaye kukhokelele kwingozi yomonakalo we-blade ye-rotor.
Ke ngoko, ukhuselo lwamandla angasemva lukhuselo lwe-turbine yomphunga ngaphandle kokusebenza komphunga.
Ukhuseleko lwamandla olubuyela umva olucwangcisiweyo lwejenereyitha
Inkqubo yejenereyitha yokukhusela amandla angasemva yenzelwe ukuthintela ijenereyitha ukuba ingakhubeki ngequbuliso iswitshi yokukhupha ijenereyitha phantsi komthwalo othile kwaye ivalvu ephambili ye-throttle ye-turbine yomphunga ayivalwanga ngokupheleleyo. Kwimeko enjalo, iyunithi yejenereyitha ye-turbine yomphunga ithambekele ekubeni nesantya esiphezulu kwaye ide ikhawuleze. Ukuze kuthintelwe le meko, kwezinye iindlela zokukhusela ngaphandle kwempazamo ye-short-circuit, emva kokuba isignali yesenzo ithunyelwe, iya kuqala isebenze ekuvaleni ivalvu ephambili yomphunga ye-turbine yomphunga. Emva kokuba amandla angasemva * * * ejenereyitha esebenza, iya kubumba kwaye ivalvu enesignali ivala ivalvu ephambili yomphunga, yakhe inkqubo yokukhusela amandla angasemva emva kwexesha elifutshane, kwaye isenzo siya kusebenza ngokuma ngokupheleleyo.
Umahluko phakathi kokhuseleko lwamandla angasemva kunye nokhuseleko lwamandla angasemva lwenkqubo
Ukhuseleko lwamandla abuyela umva kukuthintela ijenereyitha ukuba ingaguquki ibe yimoto emva kwamandla abuyela umva, iqhube i-turbine yomphunga ukuba ijikeleze kwaye ibangele umonakalo kwi-turbine yomphunga. Ekugqibeleni, ndiyoyika ukuba i-prime mover iya kuqhutywa yinkqubo ukuba ayinawo amandla!
Inkqubo yokukhusela amandla angasemva kukuthintela isantya esiphezulu se-turbine esibangelwa yivalvu ephambili ye-throttle engavalwanga ngokupheleleyo emva kokuba iyunithi yejenereyitha iqhawulwe ngequbuliso, ngoko ke amandla angasemva asetyenziselwa ukunqanda. Ekugqibeleni, ndiyoyika ukuba amandla amaninzi e-prime mover aya kukhokelela kwisantya esiphezulu seyunithi.
Ngoko ke, ngokunyanisekileyo, ukhuselo lwamandla angasemva luhlobo lokhuselo lwe-generator relay, kodwa ikakhulu lukhusela i-turbine yomphunga. Ukhuseleko lwamandla angasemva kwenkqubo alukhuseli, kodwa yinkqubo yesenzo esetelwe ukwenza inkqubo ikhubeke, eyaziwa ngokuba yi-program tripping, esetyenziswa ngokubanzi kwimo yokuvala.
Eyona nto ibalulekileyo kukuba logama nje amandla abuyela umva efikelela kwixabiso elimiselweyo, aya kukhubeka. Ukongeza ekufikeleleni kwixabiso elimiselweyo, amandla abuyela umva enkqubo akwafuna ukuba ivalvu ephambili ye-throttle ye-steam turbine ivalwe. Ke ngoko, isenzo samandla abuyela umva kufuneka sithintelwe ngexesha loqhagamshelo lwegridi ngexesha lokuqalisa kweyunithi.
Le yimisebenzi yokukhusela umva kwejenereyitha kunye nenkcazo yamandla okubuyela umva kwejenereyitha. Kwijenereyitha ye-turbine yomphunga ekusebenzeni okuqhagamshelwe kwigridi, iya kusebenza njengemoto ehambelanayo emva kokuba ivalvu ephambili ye-throttle ye-turbine yomphunga ivaliwe: ifunxa amandla asebenzayo kwaye irhuqe i-turbine yomphunga ukuze ijikeleze, nto leyo enokuthumela amandla asebenzayo kwinkqubo. Njengoko ivalvu ephambili ye-throttle ye-turbine yomphunga ivaliwe, i-tail blade ye-turbine yomphunga inomngquzulwano nomphunga oseleyo ukuze yenze ilahleko yokuqhuma, eyonakaliswa kukushisa kakhulu ngexesha lokusebenza ixesha elide. Ngeli xesha, ukhuseleko olubuyela umva lunokukhusela i-turbine yomphunga ekonakaleni.
Ixesha lokuposa: Jan-10-2022
