Ulwazi olusisiseko lwabasebenzisi
Iplanti yepetrochemical ikakhulu ivelisa iimveliso zegesi.Izixhobo zombane ezisetyenziswa yinkampani ngumthwalo womqhubi we-soft starter, kwaye i-transformer yokusabalalisa i-2500 kVA.Umzobo wenkqubo yonikezelo lwamandla ngolu hlobo lulandelayo:
Eyona datha yokusebenza
Amandla apheleleyo we-frequency converter ye-2500KVA transformer yi-1860KVA, i-avareji yamandla e-PF = 0.8, kunye nokusebenza ngoku yi-2400-2700A.
Uhlalutyo lwemeko yeNkqubo yaMandla
Isitshixo kunikezelo lwamandla ombane ngumthwalo we-rectifier inverter power supply driver, eyeyomthwalo wenkqubo edityanisiweyo.Izixhobo zivelisa i-harmonics eninzi ngexesha lenkqubo yokusebenza, engumthombo oqhelekileyo we-harmonic.I-harmonic yangoku emaziswe kwigridi yamandla iya kubangela amandla ombane osebenzayo we-harmonic kwi-impedance yeempawu zegridi yamandla, okukhokelela kuguquko kumbane osebenzayo kunye nokukhoyo kwegridi yamandla, kubeka emngciphekweni umgangatho kunye nokusebenza kokhuseleko lwenkqubo yonikezelo lwamandla, ukwandisa ilahleko yomgca kunye nempazamo yamandla ombane osebenzayo, kwaye ibangele umonakalo omkhulu kwigridi yamandla kunye nezityalo zokusetyenzwa.Izixhobo zayo zombane, ngakumbi ikhabhinethi yembuyekezo yamandla emveli esebenzayo iya kubangela iziphumo ezibi, kwaye kulula ukubangela ukungcangcazela kwe-harmonic, kubangela umonakalo kwizixhobo zombane ezinjengeekhabhathi zecapacitor.Ke ngoko, isihluzi sembuyekezo samandla asezantsi-voltage asebenzayo kunye nomsebenzi wokucinezelwa kwe-harmonic kufuneka kukhethwe ukucinezela i-harmonics yenkqubo, ukubuyisela imithwalo esebenzayo, kunye nokuphucula into yamandla.
Hlunga isicwangciso sonyango lwembuyekezo yamandla asebenzayo
Iinjongo zolawulo
Izixhobo zokucoca imbuyekezo ziyilelwe ukuhlangabezana neemfuno zolawulo lokucinezela i-harmonics kunye namandla asebenzayo.
Ngaphantsi kwendlela yokusebenza kwenkqubo ye-0.4KV, emva kokuba isixhobo sembuyekezo yokucoca sishiya umzi-mveliso, ukunyanzeliswa kwe-harmonic kungaphezulu kwe-0.92 kwi-avareji yamandla enyanga.
Musa ukubanga i-harmonic resonance okanye i-resonance overvoltage kunye ne-overcurrent ngenxa yegalelo lesihluzo sembuyekezo yesebe.
Uyilo lulandela iMigangatho
Umgangatho wamandla I-harmonics yegridi kawonkewonke GB/T14519-1993
Umgangatho wamandla Ukuguquguquka kweVoltage kunye ne-flicker GB12326-2000
Iimeko zobugcisa ngokubanzi zesixhobo sembuyekezo yamandla asezantsi-voltage asebenzayo GB/T 15576-1995
Isixhobo sembuyekezo yamandla asezantsi-voltage esebenzayo JB/T 7115-1993
Imbuyekezo yamandla asebenzayo iimeko zobugcisa JB/T9663-1999 "I-low-voltage reactive power isilawuli sembuyekezo ezenzekelayo" ukusuka kwi-high-order harmonic yangoku umda wexabiso lamandla aphantsi-voltage kunye nezixhobo zombane.
Amagama e-Electrotechnical Ii-capacitors zamandla GB/T 2900.16-1996
I-low voltage shunt capacitor GB/T 3983.1-1989
Reactor GB10229-88
I-Reactor IEC 289-88
Umbane ophantsi wembuyekezo yamandla asebenzayo
Umyalelo wokulawula iimeko zobuchwepheshe DL/T597-1996
Umgangatho ophantsi we-voltage yokukhusela indawo yombane ye-GB5013.1-1997
Ii-switchgear ezisezantsi kunye neendibano zolawulo
Iingcamango zoyilo
Ngokwemeko yokwenyani yeshishini, inkampani yethu ithathela ingqalelo ngokupheleleyo amandla omthwalo kunye nokucinezelwa kwe-harmonic kwisihluzi imbuyekezo engasebenziyo ye-inverter, kwaye ifakela isixhobo sembuyekezo esingasebenziyo kwisihluzi kwicala le-0.4KV le-voltage ephantsi ye-transformer yeshishini, ethi icinezela i-harmonics kwaye ihlawule ukunyuka kwamandla asebenzayo.amandla factor.
Ngethuba lokusebenza kwe-frequency converter, iya kuvelisa amaxesha e-5 ye-250HZ, amaxesha angama-7 e-350HZ kunye nezinye i-harmonics eziphezulu.Ke ngoko, xa uyila imbuyekezo engasebenziyo yokucoca i-inverter, kufuneka kuqinisekiswe ukuba isihluzi sesebe lembuyekezo yesiphaluka sinokucinezela ngokufanelekileyo i-harmonics kwaye sihlawule amandla angasebenziyo kwii-frequencies ezingaphezu kwe-250HZ kunye ne-350HZ ukuphucula amandla ombane.
umsebenzi woyilo
Umbane obanzi wombane we-inverter umgca wokuvelisa umbane ohambelana ne-2500 kVA transformer nganye ihlawulwa ukusuka kwi-0.8 ukuya malunga ne-0.92.Isixhobo sembuyekezo sesixhobo sokuhluza kufuneka sifakwe amandla angama-900 kWh.Amandla eqela le-11 le-phase-splitting lihambelana ne-windings kwicala elisezantsi le-voltage ye-transformer ukuba idibaniswe kwaye ikhutshwe ngokuzenzekelayo.Umthamo wokulungelelaniswa kokuhlelwa yi-45KVAR, enokuthi ihlangabezane neemfuno ezahlukeneyo zamandla zabaqalayo ezithambileyo kunye nemigca yokuvelisa.Olu hlobo loyilo luqinisekisa ngokupheleleyo ukuba amandla ahlengahlengisiweyo angaphezulu kwe-0.95.
Uhlalutyo lwesiphumo emva kokufakwa kwembuyekezo yesihluzi
NgoJuni ka-2011, isihluzo se-inverter esisebenza isixhobo sombuyekezo samandla safakelwa saza sasetyenziswa.Isixhobo silandelela ngokuzenzekelayo utshintsho lomthwalo we-inverter, ngokukhawuleza icinezela i-high-order pulse current ukuhlawula umthwalo osebenzayo, kwaye iphucula into yamandla.iinkcukacha ngolu hlobo lulandelayo:
Emva kokuba isixhobo sembuyekezo sokucoca sisetyenzisiwe, amandla okutshintsha ijika imalunga ne-0.98 (indawo ephakanyisiweyo imalunga ne-0.8 xa isixhobo sembuyekezo sokucoca sisusiwe)
Umsebenzi wokulayisha
Ukusebenza okwangoku kwe-transformer ye-2500KVA iyancipha ukusuka kwi-2700A ukuya kwi-2300A, kwaye izinga lokunciphisa li-15%.Emva kwembuyekezo, ixabiso lokunciphisa ilahleko yamandla yi-WT=△Pd*(S1/S2)2*τ*[1-(cosφ1/cosφ2)2]=24×{(0.85×2000)/2000}2×0.4≈16 (kw h) Kwifomula, i-Pd yilahleko ye-short-circuit ye-transformer, eyi-24KW, kunye nokugcinwa kweendleko zombane ngonyaka yi-16 * 20 * 30 * 10 * 0.7 * 2 = 134,000 yuan (esekelwe ekusebenzeni kwe-20 iiyure ngosuku, iintsuku ezingama-30 ngenyanga, kunye neenyanga ezili-10 ngonyaka, 0.7 yuan ngekWh).
imeko amandla factor
Umbane obanzi wenkampani unyukile ukusuka kwi-0.8 ukuya kwi-0.95 kule nyanga, kwaye amandla ombane aya kugcinwa kwi-0.96-0.98 kwinyanga ezayo, kwaye umvuzo uya kwandiswa nge-5000-6000 yuan ngoJanuwari.
Ngokubanzi, i-low-voltage reactive power imbuyekezo yesihluzo esithambileyo sinobuchule obuhle kakhulu bokucinezela i-pulse yangoku kunye nokubuyisela amandla asebenzayo, ukusombulula ingxaki yesohlwayo samandla asebenzayo enkampani, ukwandisa umthamo wemveliso ye-transformer, kunye nokunciphisa. amandla asebenzayo Ukusetyenziswa okongeziweyo kwemveliso kwandisa imveliso, kwazisa inzuzo ecacileyo yezoqoqosho kwinkampani, kwaye kubuyise utyalo-mali lomthengi kunyaka omnye.Ke ngoko, imbuyekezo yamandla eqalayo ethambileyo eqalayo eveliswe yinkampani yanelisa kakhulu, kwaye iya kutsala abathengi abaninzi kwixesha elizayo.
Ixesha lokuposa: Apr-14-2023