Nqanda i-short circuit yesigaba ukuya kwisigaba ebangelwa ziziphelo ezikhululekileyo ze-stator windings
I-stator winding kufuneka ibotshelelwe kwindawo evulelekileyo, kwaye uvavanyo lwe-slot potential kufuneka luhlangabezane neemfuno.
Jonga rhoqo ukuba iziphelo ze-stator winding ziyatshona na, zikhululekile okanye zigugile.
Ukuthintela umonakalo we-stator winding insulation
Qinisa ukuhlolwa kwentambo yeringi kunye nokufakelwa kwe-transition lead kwiijenereyitha ezinkulu, kwaye rhoqo wenze uvavanyo ngokuhambelana neemfuno "zeMigaqo yoVavanyo loKhuseleko lweZixhobo zoMbane" (DL/T 596-1996).
Jonga rhoqo ukuqina kwesikrufu se-stator core sejenereyitha. Ukuba ukuqina kwesikrufu se-core kufunyaniswe ukuba akuhambelani nexabiso loyilo lwefektri, kufuneka kujongwane nako ngexesha. Jonga rhoqo ukuba amaphepha esinyithi e-silicon ejenereyitha abekwe kakuhle, akukho mkhondo wobushushu, kwaye umngxuma we-dovetail awunamaqhekeza kwaye awuphumi. Ukuba iphepha lesinyithi le-silicon liyaphuma, kufuneka lijongwane nako ngexesha.
Nqanda ukujikeleza okufutshane phakathi kokujika kwe-rotor winding.
Uvavanyo lwe-dynamic kunye ne-static inter-turn short-circuit kufuneka lwenziwe ngokulandelelanayo kwiyunithi yokucheba i-peak ngexesha lokugcinwa, kwaye isixhobo sokujonga i-rotor winding dynamic inter-turn short-circuit online singafakwa ukuba iimeko ziyavuma, ukuze kufunyanwe iingxaki ngokukhawuleza.
Jonga utshintsho lwamandla okungcangcazela kunye notshintsho lwamandla okusabela kwiijenereyitha ezisebenzayo nangaliphi na ixesha. Ukuba ukungcangcazela kuhamba notshintsho lwamandla okusabela, i-rotor yejenereyitha inokuba ne-inter-turn short circuit enzima. Ngeli xesha, umsinga we-rotor uqala ulawulwe. Ukuba ukungcangcazela kuyanda ngequbuliso, ijenereyitha kufuneka iyekwe ngoko nangoko.
Ukuthintela umonakalo wokutshisa kakhulu kwindawo okwenziwa kuyo ijenereyitha
Indawo yokukhupha ijenereyitha kunye nenxalenye yoqhagamshelo lwe-neutral point lead kufuneka zithembeke. Ngexesha lokusebenza kweyunithi, umlinganiselo wobushushu be-infrared imaging kufuneka wenziwe rhoqo kwintambo ye-split-phase ukusuka kwi-excitation ukuya kwisixhobo se-static excitation, intambo esuka kwisixhobo se-static excitation ukuya kwi-rotor slip ring, kunye ne-rotor slip ring.
Jonga rhoqo uqhagamshelwano phakathi koqhagamshelwano olutshintshatshintshayo nolungashukumiyo lwebrake yemela yebrake yombane, uze ufumanise ukuba intwasahlobo yokucinezela ikhululekile okanye umnwe omnye woqhagamshelwano awuhambelani neminye iminwe yoqhagamshelwano kwaye ezinye iingxaki kufuneka zisonjululwe ngexesha.
Xa i-insulation yejenereyitha itshisa kakhulu i-alamu, isizathu kufuneka sihlalutywe, kwaye ukuba kuyimfuneko, umatshini kufuneka ucinywe ukuze kususwe isiphene.
Xa umatshini omtsha ufakwa kwimveliso kwaye umatshini omdala ulungisiwe, kufuneka kuqwalaselwe ukuba ucinezelekile na kwi-stator iron core kwaye nokuba umnwe woxinzelelo lwamazinyo uthambekele na, ingakumbi amazinyo kuzo zombini iziphelo. Uvavanyo lokulahlekelwa yintsimbi kufuneka lwenziwe xa kunikezelwa okanye xa kukho amathandabuzo malunga nokufakwa kwe-insulation kwi-core.
Kwinkqubo yokuvelisa, yokuthutha, yokufakela kunye nokulungisa, kufuneka kuthathwe unonophelo ukuthintela izinto ezincinci zangaphandle ezifana ne-welding slag okanye iitships zesinyithi ukuba zingaweli kwiindawo zokungenisa umoya ze-stator core.
Nqanda umonakalo woomatshini bejenereyitha
Xa usebenza kwi-air tunnel yejenereyitha, umntu okhethekileyo kufuneka abekwe ukuba alinde umnyango wejenereyitha. Umqhubi kufuneka anxibe iimpahla zomsebenzi ezingenasinyithi kunye nezihlangu zokusebenza. Ngaphambi kokungena kwijenereyitha, zonke izinto ezingavumelekanga mazikhutshwe, kwaye izinto ezizisiweyo mazibalwe kwaye zirekhodwe. Xa umsebenzi ugqityiwe kwaye urhoxisiwe, uluhlu lwezinto luchanekile ukuqinisekisa ukuba akukho ntsalela. Ingongoma ephambili kukuthintela inkunkuma yesinyithi efana nezikrufu, amantongomane, izixhobo, njl.njl. ukuba ingashiywa ngaphakathi kwi-stator. Ngokukodwa, kufuneka kwenziwe uhlolo oluneenkcukacha kwisithuba esiphakathi kweekhoyili zokugqibela kunye nendawo ephakathi kwee-involutes eziphezulu nezisezantsi.
Izixhobo zokukhusela izixhobo eziphambili nezincedisayo kufuneka zihlolwe rhoqo kwaye zisetyenziswe ngendlela eqhelekileyo. Xa iimitha ezibalulekileyo zokujonga ukusebenza kunye nezixhobo zeyunithi zisilela okanye zisebenza gwenxa, akuvumelekanga ngokungqongqo ukuqala iyunithi. Xa iyunithi ingalawuleki ngexesha lokusebenza, kufuneka imiswe.
Qinisa uhlengahlengiso lwendlela yokusebenza yeyunithi, kwaye uzame ukuphepha indawo yokungcangcazela ephezulu okanye indawo yokucambalala kweyunithi.
Nqanda i-generator bearing ekutshiseni iithayile
I-thrust bearing enesixhobo sokugquma ioyile esinoxinzelelo oluphezulu kufuneka iqinisekise ukuba xa isixhobo sokugquma ioyile esinoxinzelelo oluphezulu siphanzile, i-thrust bearing ayifakwa kwisixhobo sokugquma ioyile esinoxinzelelo oluphezulu ukuze ime ngokukhuselekileyo ngaphandle komonakalo. Isixhobo sokugquma ioyile esinoxinzelelo oluphezulu kufuneka sihlolwe rhoqo ukuqinisekisa ukuba sikwimeko yokusebenza eqhelekileyo.
Inqanaba leoyile yeoyile yokuthambisa kufuneka libe nomsebenzi wokujonga ngokuzenzekelayo kude kwaye lihlolwe rhoqo. Ioyile yokuthambisa kufuneka ivavanywe rhoqo, kwaye ukonakala komgangatho weoyile kufuneka kujongwane nako ngokukhawuleza, kwaye iyunithi akufuneki iqaliswe ukuba umgangatho weoyile awufanelekanga.
Ubushushu bamanzi okupholisa, ubushushu beoyile, ukujonga ubushushu bethayile kunye nezixhobo zokukhusela kufuneka zichaneke kwaye zithembeke, kwaye ukuchaneka kokusebenza kufanele kuqiniswe.
Xa iimeko zokusebenza ezingaqhelekanga zeyunithi zingonakalisa i-bearing, kufuneka ihlolwe ngokupheleleyo ukuqinisekisa ukuba i-bearing bush ikwimeko entle ngaphambi kokuba iqalwe kwakhona.
Hlola rhoqo i-bearing pad ukuqinisekisa ukuba akukho ziphene ezifana nokuqhekeka kunye nokuqhekeka, kwaye ukugqitywa komphezulu womphezulu woqhagamshelwano lwe-bearing pad, ikhola ye-shaft kunye nepleyiti yesibuko kufuneka kuhlangabezane neemfuno zoyilo. Kwii-bearing pads zeBabbitt, unxibelelwano phakathi kwe-alloy kunye ne-pad kufuneka luhlolwe rhoqo, kwaye uvavanyo olungonakalisiyo kufuneka lwenziwe ukuba kuyimfuneko.
Isekethe yokukhusela umsinga wokuthwala kufuneka isetyenziswe ngendlela eqhelekileyo, kwaye i-alamu yomsinga wokuthwala kufuneka ihlolwe kwaye ijongwe ngexesha, kwaye iyunithi ayivumelekanga ukusebenza ngaphandle kokhuseleko lomsinga wokuthwala ixesha elide.
Thintela ukukhululeka kwezinto ezivelisa i-hydro-generator
Iindawo ezidibanisayo zeendawo ezijikelezayo mazithintelwe ukuba zingakhululeki kwaye mazihlolwe rhoqo. Ifeni ejikelezayo kufuneka ifakwe ngokuqinileyo, kwaye iiblade mazingabi nazimfanta kunye nokuguquka. Ipleyiti ebangela umoya kufuneka ifakwe ngokuqinileyo kwaye igcine umgama owaneleyo ukusuka kwi-stator bar.
I-Stator (kuquka ifreyimu), iindawo ze-rotor, i-stator bar slot wedge, njl. kufuneka ihlolwe rhoqo. Ii-fixing bolts, ii-stator foundation bolts, ii-stator core bolts kunye nee-tension bolts zefreyimu ye-turbine generator kufuneka zibotshelelwe kakuhle. Akufuneki kubekho ukuyekelela, ukuqhekeka, ukuguquka kunye nezinye izinto.
Kwi-air tunnel ye-hydro-generator, kuyimfuneko ukuphepha ukusebenzisa izinto ezishushu phantsi kwentsimi ye-electromagnetic okanye izinto zokudibanisa isinyithi ezinokufunxwa ngombane. Ngaphandle koko, kufuneka kuthathwe amanyathelo okukhusela anokwethenjelwa, kwaye amandla afanele ahlangabezane neemfuno zokusetyenziswa.
Jonga rhoqo inkqubo yokuqhobosha ngoomatshini yejenereyitha yamanzi. Iibhuleki kunye neeringi zeebhuleki mazibe zithe tyaba ngaphandle kokuqhekeka, iibholithi zokulungisa akufuneki zikhululeke, izihlangu zeebhuleki mazitshintshwe emva kokuba zinxityiwe, kwaye iibhuleki kunye neenkqubo zazo zokuhambisa umoya kunye neoyile mazingabi nazikhonkwane zeenwele. , umngxuma wentambo, ukuvuza komoya kunye nokuvuza kweoyile kunye nezinye iziphene ezichaphazela ukusebenza kokuqhobosha. Ixabiso lokuseta isantya sesekethe yeebhuleki kufuneka lihlolwe rhoqo, kwaye akuvumelekanga ngokungqongqo ukusebenzisa ibhuleki yoomatshini ngesantya esiphezulu.
Jonga isixhobo sokuvumelanisa rhoqo ukuze uthintele i-hydro-generator ekuqhagamshelweni kwigridi ngokungangqamananga.
Ukhuseleko kwiziphene zomhlaba ezijikelezayo ze-generator rotor
Xa ukujija kwerotor yejenereyitha kusekelwe kwindawo ethile, indawo yempazamo kunye nohlobo kufuneka kuchongwe ngoko nangoko. Ukuba kusekwe isinyithi esizinzileyo, kufuneka kumiswe ngoko nangoko.
Nqanda iijenereyitha ekuqhagamshelweni kwigridi ngokungangqamananga
Isixhobo sekhompyutha esizenzekelayo esisebenza nge-quasi-synchronization kufuneka sifakwe kunye nokuhlolwa kokuvumelanisa okuzimeleyo.
Kwiiyunithi ezisandula ukufakwa kwimveliso, iisekethe ezilungisiweyo nezihambelanayo (kubandakanya isekethe ye-voltage AC, isekethe yokulawula i-DC, imitha epheleleyo, isixhobo esizenzekelayo esivumelanisa i-quasi kunye nesiphatho sokuvumelanisa, njl.njl.) ezitshintshiweyo okanye ezifakwe izixhobo endaweni yazo, lo msebenzi ulandelayo kufuneka wenziwe ngaphambi kokuba uqhagamshele kwigridi okokuqala: 1) Yenza uhlolo olupheleleyo noluneenkcukacha kunye nokudluliselwa kwesixhobo kunye nesekethe yokuvumelanisa; 2) Sebenzisa iseti yejenereyitha-i-transformer enovavanyo lwe-busbar olungenamthwalo ukuze ujonge ukuchaneka kwesekethe yesibini yokuvumelanisa i-voltage, kwaye ujonge itafile yonke yenyathelo. 3) Yenza uvavanyo lwe-synchronization olungeyonyani lweyunithi, kwaye uvavanyo kufuneka lubandakanye uvavanyo lwe-quasi-synchronization oluqhutywa ngesandla kunye novavanyo lokuvala lwe-quasi-synchronization oluzenzekelayo lwe-circuit breaker, ukuvimba kwe-synchronous njalo njalo.
Thintela umonakalo owenziwe yijenereyitha obangelwa kukusilela kwenkqubo yokuvusa
Sebenzisa ngokungqongqo umda ophantsi wokuvuthela wesikhungo sokuhambisa kunye neemfuno zokuseta i-PSS kwiijenereyitha, kwaye uziqinisekise ngexesha lokuhlaziya.
Umda wokuvuthela ngokugqithisileyo kunye noseto lokukhusela ukuvuthela ngokugqithisileyo komlawuli wokuvuthela ngokuzenzekelayo kufuneka ube ngaphakathi kwamaxabiso avumelekileyo anikwe ngumenzi, kwaye kufuneka uhlolwe rhoqo.
Xa itshaneli ezenzekelayo yomlawuli wokunyusa ingasebenzi, itshaneli kufuneka itshintshelwe kwaye isebenze ngexesha. Akuvumelekanga ngokungqongqo ukuba ijenereyitha isebenze ixesha elide phantsi komgaqo wokunyusa intshukumo ngesandla. Ngexesha lokusebenza komgaqo wokunyusa intshukumo ngesandla, xa kulungiswa umthwalo osebenzayo wejenereyitha, umthwalo osebenzayo wejenereyitha kufuneka ulungiswe ngokufanelekileyo ukuthintela ijenereyitha ekulahlekelweni kukuzinza kwayo okungaguqukiyo.
Xa ukuphambuka kwevolthi yombane ku-+10%~-15% kwaye ukuphambuka kwefrikhwensi ku-+4%~-6%, inkqubo yokulawula ukuvuseleleka, iiswitshi kunye nezinye iinkqubo zokusebenza zinokusebenza ngokuqhelekileyo.
Kwinkqubo yokuqalisa, yokumisa kunye nezinye iimvavanyo zeyunithi, kufuneka kuthathwe amanyathelo okunqumla uvuselelo lwejenereyitha ngesantya esiphantsi seyunithi.
Ixesha lokuthumela: Matshi-01-2022
