Iseti yejenereyitha ngokubanzi iquka injini, ijenereyitha, inkqubo yolawulo olupheleleyo, inkqubo yesekethe yeoyile, kunye nenkqubo yokusasazwa kwamandla. Inxalenye yamandla yeseti yejenereyitha kwinkqubo yonxibelelwano - injini yedizili okanye injini ye-turbine yegesi - iyafana kakhulu kwiiyunithi ezinoxinzelelo oluphezulu kunye noxinzelelo oluphantsi; Uqwalaselo kunye nomthamo wamafutha wenkqubo yeoyile zinxulumene kakhulu namandla, ngoko ke akukho mahluko mkhulu phakathi kweeyunithi ezinoxinzelelo oluphezulu noluphantsi, ngoko ke akukho mahluko kwiimfuno zeenkqubo zokungenisa umoya kunye nokukhupha umoya zeeyunithi ezibonelela ngokupholisa. Umahluko kwiiparameter kunye nokusebenza phakathi kweeseti zejenereyitha ezinombane ophezulu kunye neeseti zejenereyitha ezinombane ophantsi zibonakala kakhulu kwicandelo lejenereyitha kunye necandelo lenkqubo yokusasazwa.
1. Umahluko kumthamo nobunzima
Iiseti zejenereyitha ze-voltage ephezulu zisebenzisa iijenereyitha ze-voltage ephezulu, kwaye ukunyuka kwamanqanaba e-voltage kwenza iimfuno zazo zokukhusela zibe phezulu. Ngokunjalo, umthamo kunye nobunzima benxalenye yejenereyitha bukhulu kunezo zeeyunithi ze-voltage ephantsi. Ke ngoko, umthamo womzimba kunye nobunzima beseti yejenereyitha ye-10kV bukhulu kancinci kunezo zeyunithi ye-voltage ephantsi. Akukho mahluko abalulekileyo kwimbonakalo ngaphandle kwenxalenye yejenereyitha.
2. Umahluko kwiindlela zokumisa umhlaba
Iindlela zokumisa umhlaba ezingathathi cala kwezi seti zimbini zejenereyitha zahlukile. Ukujija kweyunithi ye-380V kuqhagamshelwe inkwenkwezi. Ngokubanzi, inkqubo ye-low-voltage yinkqubo yokumisa umhlaba ngqo ene-neutral point, ngoko ke i-neutral point eqhagamshelwe inkwenkwezi yejenereyitha imiselwe ukuba itsalwe kwaye inokumiswa ngokuthe ngqo xa kufuneka. Inkqubo ye-10kV yinkqubo encinci yokumisa umhlaba, kwaye i-neutral point ayimiswanga okanye ayimiswanga ngenxa yokuxhathisa komhlaba. Ke ngoko, xa kuthelekiswa neeyunithi ze-low-voltage, iiyunithi ze-10kV zifuna ukongezwa kwezixhobo zokusasaza iindawo ezingathathi cala ezifana neekhabhathi zokuxhathisa kunye neekhabhathi ze-contactor.
3. Umahluko kwiindlela zokukhusela
Iiseti zejenereyitha zombane ophezulu ngokubanzi zifuna ukufakelwa kokhuseleko lokuqhekeka ngokukhawuleza kwangoku, ukhuseleko lokugqithisela, ukhuseleko lokumisa umhlaba, njl. Xa uvakalelo lokhuseleko lokuqhekeka ngokukhawuleza kwangoku lungahlangabezani neemfuno, ukhuseleko lokwahluka olude lungafakwa.
Xa kuvela impazamo yokumisa umhlaba xa kusetwa iseti yejenereyitha enamandla aphezulu, ibeka umngcipheko omkhulu kukhuseleko kubasebenzi nakwizixhobo, ngoko ke kuyimfuneko ukumisela ukhuseleko lwempazamo yokumisa umhlaba.
Ingongoma engathathi cala yejenereyitha isekelwe nge-resistor. Xa kuvela impazamo yokumisa umhlaba yesigaba esinye, umsinga wephutha ohamba ngengongoma engathathi cala unokubonwa, kwaye ukhuseleko lokukhubeka okanye lokuvaleka lunokufumaneka ngokhuseleko lokumisa umhlaba. Ingongoma engathathi cala yejenereyitha isekelwe nge-resistor, enokunciphisa umsinga wephutha ngaphakathi kwegophe lomonakalo elivumelekileyo lejenereyitha, kwaye ijenereyitha inokusebenza ngeempazamo. Ngokuxhathisa ukumisa umhlaba, iimpazamo zokumisa umhlaba zinokubonwa ngokufanelekileyo kwaye izenzo zokukhusela ukumisa umhlaba zinokuqhutywa. Xa kuthelekiswa neeyunithi ze-voltage ephantsi, iiseti zejenereyitha ze-voltage ephezulu zifuna ukongezwa kwezixhobo zokusasaza iindawo ezingathathi cala ezifana neekhabhathi zokuxhathisa kunye neekhabhathi ze-contactor.
Ukuba kuyimfuneko, kufuneka kufakwe ukhuselo lokwahluka kwiiseti zejenereyitha ezinamandla aphezulu.
Ukubonelela ngokhuseleko lokwahluka kombane olunezigaba ezintathu kwi-stator winding yejenereyitha. Ngokufaka ii-current transformers kwii-terminals ezimbini eziphumayo ze-coil nganye kwijenereyitha, umahluko wangoku phakathi kwee-terminals ezingenayo neziphumayo ze-coil ulinganiswa ukuze kuchongwe imeko yokufakelwa kwe-coil. Xa kwenzeka i-short circuit okanye i-grounding kuyo nayiphi na izigaba ezimbini okanye ezintathu, i-fault current inokubonwa kuzo zombini ii-transformers, ngaloo ndlela iqhuba ukhuseleko.
4. Umahluko kwiintambo zokukhupha
Phantsi kwenqanaba elifanayo lomthamo, ububanzi bentambo yokuphuma kweeyunithi ze-voltage eziphezulu buncinci kakhulu kunobo beeyunithi ze-voltage eziphantsi, ngoko ke iimfuno zokusetyenziswa kwendawo kwiitshaneli zokuphuma ziphantsi.
5. Umahluko kwiiNkqubo zoLawulo lweeYunithi
Inkqubo yolawulo lweyunithi yeeyunithi ezine-voltage ephantsi ingadibaniswa kwicala elinye lecandelo lejenereyitha emzimbeni womatshini, ngelixa iiyunithi ezine-voltage ephezulu zifuna ibhokisi yolawulo yeyunithi ezimeleyo ukuba icwangciswe ngokwahlukileyo kwiyunithi ngenxa yeengxaki zokuphazamiseka kwesignali.
6. Umahluko kwiimfuno zolondolozo
Iimfuneko zokugcinwa kweeyunithi zejenereyitha ezinamandla aphezulu kwiinkalo ezahlukeneyo ezifana nenkqubo yesekethe yeoyile kunye nenkqubo yokungenisa umoya kunye neyokukhupha umoya ziyafana nezo zeeyunithi ze-voltage ephantsi, kodwa ukusasazwa kwamandla kweeyunithi yinkqubo ye-voltage ephezulu, kwaye abasebenzi bokulungisa kufuneka baxhotyiswe ngeemvume zokusebenza ze-voltage ephezulu.
Ixesha lokuthumela: Meyi-09-2023
