Isisombululo seFault for Excitation System ye-Diesel Generator Set

Inkqubo yokuvuselela ibonelela ngemagnethi yangoku kwi-rotor winding ye-diesel generator.Umsebenzi wayo ophambili kukugcina i-voltage yejeneretha kwinqanaba elinikiweyo, ukusabalalisa ngokufanelekileyo amandla asebenzayo kunye nokuphucula ukuzinza komsebenzi wenkqubo yamandla.Kungabonwa ukuba ukugcinwa kunye nokulungiswa kwenkqubo yokuvuselela kubaluleke kakhulu ukuqinisekisa ukusebenza ngokukhuselekileyo kokuveliswa kombane.

Nangona kunjalo, siyazi ukuba nasiphi na isixhobo sinokuba neempazamo ekusebenzeni.Indlela yokuxilonga ngokukhawuleza kunye nokuphelisa iimpazamo luxanduva olubalulekileyo kunye nomsebenzi wabasebenzi bokulondoloza, kwaye inkqubo yokuvuselela ayikho.Ngoko ke, eli nqaku lixubusha iimpazamo eziqhelekileyo kunye neendlela zokulwa ijenereyitha yedizili inkqubo yokuvuselela.

1. Iimpazamo eziqhelekileyo kunye nemilinganiselo yenkqubo yokuvuselela i-diesel generator

1.1 ukusilela kovuselelo

Xa i-generator ayikwazi ukuseka i-voltage yokuqala emva kokuba inkqubo yokuvuselela ikhupha umyalelo wokuvuselela, obizwa ngokuba yi-excitation failure.Ngenxa yokuba kukho iimodeli ezininzi ze-dizeli ye-excitation system, kwaye kukho ukungafani kwi-parameter setting kunye nomboniso wesignali.Ngokomzekelo, i-EXC9000 excitation. Inkqubo, xa i-terminal voltage ye-generator isengaphantsi kwe-10% ye-voltage elinganisiweyo yejeneretha ngaphakathi kwe-10s, isikrini sokubonisa isilawuli siya kunika ingxelo "yokusilela kokuvuselela".

Kukho izizathu ezininzi zokungaphumeleli kokuvuselela i-build-up, kwaye eziqhelekileyo zezi:

(1) Kukho ukukhutshwa ngexesha lokuhlola ukuqalisa, njengokutshintsha kwe-excitation, i-de excitation switch, isihlalo sokhuseleko se-synchronous transformer, njl.

(2) I-excitation circuit iphosakele, njengemigca evulekileyo okanye amacandelo awonakele.

(3) Ukungaphumeleli komlawuli.

(4) umqhubi akaqhelanga nokusebenza, kwaye ixesha lokucofa iqhosha lokuvuselela lifutshane kakhulu, lingaphantsi kwe-5s.

Isisombululo:

(1) Khangela imeko ye-boot ngokungqongqo ngokuhambelana neenkqubo, hlaziya zonke izixhumanisi ukuze ugweme ukushiywa.

(2) Qwalasela ngenyameko.Ukuba ukrokrela ukuba i-excitation circuit iphosakele, gweba ngokujonga ukusebenza kwe-excitation contactor kunye nesandi sokutsalwa.Ukuba akukho sandi, kunokubakho ukusilela kwesekethe;ukuba kukungaphumeleli komlawuli, unokujonga ukukhanya kwesalathisi sokutshintsha kwebhodi yokulawula.Ingaba ukukhanya kwesalathisi sokungena kuhlala kuvuliwe, kwaye ukuba ukukhanya kucinyiwe, khangela i-wiring kunye nokuba umyalelo wekhompyutheni yomninimzi ukhutshiwe.

(3) Emva kokuba izixhobo zigqitywe, khangela ukuba imowudi yokuvuselela i-interface yomshini womntu ifanelekile, kwaye uqalise kwakhona umatshini ngokulungelelanisa imodi yokuvuselela okanye ukutshintsha umjelo.

(4) Uninzi lweentsilelo emva kokugcinwa kunye nokulungiswa kushiywe kwimisebenzi yangaphambili.Ukuba ukhumbula ngomonde into oye wahamba ngayo, unokufumana iimpawu ezithile, ezifana nokuba i-rotor kunye nekhebula lokukhupha i-excitation lixhunywe ngasemva.

2.2 Uvuselelo olungazinzanga

Ngexesha lokusebenza kwejenereyitha, i-excitation fluctuation inkulu kakhulu.Ngokomzekelo, idatha yokusebenza yenkqubo yokuvuselela iyanda, kodwa ngamanye amaxesha iyinto eqhelekileyo kwaye ayiqhelekanga, kwaye ukulungiswa kokudibanisa kunye nokukhupha kusenokwenziwa.

Izizathu ezinokwenzeka zezi:

(1) Imveliso ye-phase-shift pulse control voltage ayiqhelekanga.

(2) Ukutshintsha kobushushu bendalo esingqongileyo kunye namalungu achaphazeleka kukungcangcazela, i-oxidation kunye nokungasebenzi kakuhle.

Isisombululo:

Ngesizathu sokuqala, jonga kuqala ukuba umbane wokuvuselela uyinto eqhelekileyo, kwaye ukhangele ukuba ixabiso elinikeziweyo kunye nexabiso elilinganisiweyo (i-voltage ye-generator okanye i-excitation current) eqhutywe yiyunithi yokulungelelanisa iyinto eqhelekileyo.

Ngesizathu sesibini, sebenzisa i-oscilloscope ukujonga ukuba i-waveform elungisiweyo igqityiwe, kwaye usebenzise i-multimeter ukujonga ukuba ukusebenza kwe-thyristor kuyinto eqhelekileyo.Olu hlobo lokungaphumeleli luya kwenzeka xa isimo se-welding ye-wire kunye neempawu zecandelo zitshintsha, kwaye ukugcinwa kunye nokulungiswa kufuneka kuqiniswe kwaye kufakwe endaweni ngexesha.Amacandelo ayingxaki anokunciphisa amathuba okusilela okunjalo.

2.3 Ukuphelisa imincili ngendlela engaqhelekanga

Emva kokuba isethi yejenereyitha yedizili iqhawulwe kwigridi yamandla, isixhobo sokucima kufuneka sithomalalise intsalela yemagnethi kwisixhobo sovuselelo ngokukhawuleza.Iindlela ze-demagnetization zibandakanya i-inverter demagnetization kunye nokumelana ne-demagnetization.Izizathu zokusilela kwe-inverter demagnetization zibandakanya izizathu zesekethe, ukusilela kolawulo lwe-SCR, unikezelo lwamandla olungaqhelekanga lwe-AC, kunye ne-angle encinci kakhulu ekhokelayo yenqanaba loguqulo oluguqukileyo.Ngoko ke, isisombululo kukuqinisa ukugcinwa kwemihla ngemihla, ukucoca rhoqo uthuli kwisixhobo, kwaye emva koko usebenzise i-conductor paste kwi-fracture de-excitation fracture, igridi yokucima i-arc kunye nezinye iindawo zokuthintela umatshini wokuxhamla.

Ukugcina i inkqubo yokuvuselela yejeneretha ye-diesel esemgangathweni, ngaphezu kokomeleza ukugcinwa kunye nokulawula, ukususwa kothuli rhoqo, ukuvavanywa kunye nokuvavanya, ingqalelo kufuneka ihlawulwe kunye nesishwankathelo seempazamo eziqhelekileyo.Njengezicwangciso zikaxakeka, ukucima iinkqubo eziqhelekileyo zokusombulula ingxaki kunokunciphisa kakhulu ixesha lokusombulula ingxaki kwaye ubeke isiseko esiluqilima sokuqinisekisa imveliso ekhuselekileyo ye-diesel genset kunye nokuphucula ukusebenza kakuhle kokuveliswa kwamandla.