Ulwazi olusisiseko lwabasebenzisi
Unyango oluphambili lwasekhaya logutyulo lwenkampani yokucoca amanzi amdaka, unikezelo lwamandla okutshintsha inxalenye yomgca wokucoca amanzi amdaka lisebenzisa iimotor zeDC eziguquguqukayo zokuqhuba iimoto, ezine-1000KVA2, 630KVA iziguquli.Umzobo wenkqubo yonikezelo lwamandla ngolu hlobo lulandelayo:
Eyona datha yokusebenza
Amandla emveliso ye-1000KVA ye-transformer soft starter yi-860KVA, i-avareji yamandla e-PF=0.83, i-current working yi-1250A, i-current esebenzayo yi-630KVA, i-factor yamandla yi-PF=0.87, kwaye ukusebenza ngoku yi-770A.Ke amandla ewonke anokuba ngu-0.84 kuphela.
Uhlalutyo lwemeko yeNkqubo yaMandla
Umthwalo oyintloko we-ballast converter yi-6 single-pulse ballasts.Isixhobo se-ballast sivelisa inani elikhulu le-pulse yangoku kumsebenzi wokuguqula i-AC kwi-DC.Ngumthombo wangoku we-pulse kwaye igalelo kwigridi yamandla.Imisinga yeHarmonic ibangela ukushukuma kwamandla ombane osebenzayo ngoku kuphawu lokuthintela igridi yamandla, okukhokelela ekulahlekeni kwesakhelo samandla ombane osebenzayo kunye nowangoku, kubeka emngciphekweni umgangatho kunye nokhuseleko lokusebenza kokutshintsha umbane, ukonyusa ilahleko yentambo kunye nokutenxa kumbane osebenzayo, kwaye kubangele iziphumo ezibi igridi yamandla kunye nezityalo zamandla ngokwazo Ziphembelele.
Ujongano lwekhompyuter yolawulo lwenkqubo (PLC) lunovelwano ngokugqwethwa kwe-harmonic yombane osebenzayo wokutshintshela unikezelo lwamandla.Ngokuqhelekileyo kuchazwe ukuba i-pulse yangoku esebenzayo yelahleko yesakhelo sombane (THD) ingaphantsi kwe-5%, kunye ne-pulse yangoku yamandla ombane osebenzayo. imveliso okanye ukusebenza, okukhokelela kwingozi enkulu yetyala lemveliso.Ngoko ke, i-low-voltage reactive power compensation filter kunye ne-pulse current suppression function kufuneka isetyenziswe ukucinezela i-pulse current yenkqubo, ukubuyisela umthwalo osebenzayo, kunye nokuphucula into yamandla.
Hlunga isicwangciso sonyango lwembuyekezo yamandla asebenzayo
Iinjongo zolawulo
Uyilo lwezixhobo zembuyekezo zokucoca luhlangabezana neemfuno zokucinezelwa kwe-harmonic kunye nolawulo loxinzelelo lwamandla asebenzayo.
Ngaphantsi kwenkqubo yokusebenza ye-0.4KV, emva kokuba isixhobo sembuyekezo yokucoca sifakwe ekusebenzeni, i-pulse current icinezelwe, kwaye i-avareji yamandla yenyanga ijikeleze i-0.92.
I-High-order harmonic resonance, i-resonance overvoltage, kunye ne-overcurrent ebangelwa ukudibanisa kwi-filter imbuyekezo yesiphaluka yesebe ayiyi kwenzeka.
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 zobuchwepheshe JB/T9663-1999 "I-low-voltage reactive power isilawuli sembuyekezo ezenzekelayo" ukusuka kwi-high-order harmonic yangoku umda wexabiso lombane ophantsi kunye nezixhobo zombane GB/T17625.7-1998
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
I-low-voltage esebenzayo yembuyekezo yolawulo lolawulo lweemeko zobugcisa DL/T597-1996
Umgangatho ophantsi we-voltage yokukhusela indawo yombane ye-GB5013.1-1997
I-low-voltage epheleleyo yokutshintshela kunye nezixhobo zokulawula i-GB7251.1-1997
Iingcamango zoyilo
Ngokwemeko ethile yenkampani, iseti yesicwangciso sembuyekezo yamandla asebenzayo kwisihluzi samandla esiguquguqukayo esithathela ingqalelo ngokupheleleyo amandla omthwalo kunye noxinzelelo lwangoku lwe-pulse yenzelwe, kwaye iseti yokucoca amandla ombane aphantsi ifakwe kumbane osezantsi we-0.4kV. icala lenkampani ye-transformer Imbuyekezo yamandla asebenzayo ukucinezela i-pulse yangoku, ukubuyisela umthwalo osebenzayo, kunye nokuphucula into yamandla.
I-ballast ivelisa i-6K-1 i-odolo ye-pulse yangoku ngexesha lokusebenza komguquli, kwaye isebenzisa ukulandelelana kwekhowudi yeqabunga malunga ne-5250Hz kunye ne-7350Hz ukwenza ukuguqulwa kokutshatyalaliswa.Ke ngoko, uyilo lwembuyekezo yamandla esebenzayo yesihluzo esiphakathi sokungeniswa kwesithando somlilo kufuneka sithathe i-250Hz, 350Hz kunye noyilo lwamaza njengethagethi, ukuze kuqinisekiswe ukuba isebe lembuyekezo lesihluzi linokucinezela ngokufanelekileyo imbuyekezo yepulse yangoku, kwaye kwangaxeshanye. ixesha licinezela umthwalo osebenzayo kwaye uphucule i-Power Factor.
umsebenzi woyilo
Amandla abanzi omgca wemveliso we-1000KVA uhlawulelwa ukusuka kwi-0.8 ukuya malunga ne-0.95.Isixhobo sokucoca imbuyekezo kufuneka sifakwe kunye nomthamo we-380KVar, eyahlulahlulwe yangamaqela amane, ngalinye livalwa ngokuzenzekelayo kwaye liqhawulwe, lihlawulela ukuxhathisa okujikelezayo kwecala lombane elisezantsi le-transformer, kwaye inomthamo wohlengahlengiso lwenyathelo. ye-45KVAR, enokuthi idibaniswe kwiimfuno zamandla emveliso yomgca wemveliso.Umba wamandla obanzi uhlawulelwa ukusuka kwi-0.8 ukuya kwi-0.95.Izixhobo zembuyekezo zokucoca kufuneka zifakwe kunye nomthamo we-310KVar, kwaye amaqela amane aqhawulwa ngokuzenzekelayo ukuze ahlawule i-low-side winding ye-transformer, kwaye umthamo ulungelelaniswe kwi-26KVAR ukuhlangabezana neemfuno zombane osebenzayo womgca wemveliso.
Uhlalutyo lwesiphumo emva kokufakwa kwembuyekezo yesihluzi
Ngo-Agasti ka-2010, isixhobo sembuyekezo yamandla asebenzayo yokucoca inverter safakelwa saza saqalisa ukusebenza.Isixhobo silandelela ngokuzenzekelayo utshintsho lomthwalo we-inverter, icinezela i-harmonics ephezulu ngexesha langempela, ihlawulela amandla asebenzayo, kwaye iphucula into yamandla.iinkcukacha ngolu hlobo lulandelayo:
Emva kokuba isixhobo sembuyekezo yesihluzi sisetyenzisiwe, amandla okutshintsha ijika emva kokuba isixhobo sembuyekezo sokucoca sisetyenziswe simalunga ne-0.97 (indawo ephakanyisiweyo imalunga ne-0.8 xa isixhobo sembuyekezo sokucoca sisusiwe)
Umsebenzi wokulayisha
Okwangoku esetyenziswa yi-1000KVA i-transformer iyancipha ukusuka kwi-1250A ukuya kwi-1060A, i-drop ye-15%;okwangoku esetyenziswa yi-630KVA i-transformer iyancipha ukusuka kwi-770A ukuya kwi-620A, i-drop ye-19%.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 = 67,000 yuan (ngokusekelwe ekusebenzeni iiyure ezingama-20 a usuku, iintsuku ezingama-30 ngenyanga, iinyanga ezili-10 ngonyaka, 0.7 yuan ngekWh).
Umsebenzi wokulayisha
Okwangoku esetyenziswa yi-1000KVA i-transformer iyancipha ukusuka kwi-1250A ukuya kwi-1060A, i-drop ye-15%;okwangoku esetyenziswa yi-630KVA i-transformer iyancipha ukusuka kwi-770A ukuya kwi-620A, i-drop ye-19%.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 = 67,000 yuan (ngokusekelwe ekusebenzeni iiyure ezingama-20 a usuku, iintsuku ezingama-30 ngenyanga, iinyanga ezili-10 ngonyaka, 0.7 yuan ngekWh).
Ixesha lokuposa: Apr-14-2023