Ulwazi olusisiseko lwabasebenzisi
Inkampani yokuphosa ivalve yesango ikakhulu ivelisa iimveliso zevalvu.Isixhobo somgca wemveliso yenkampani ibandakanya itoni enye ye-medium-frequency induction furnace, esebenzisa i-2000 kVA (10KV/0.75 kVA) isixokelelwano sobuchwephesha sobuchwephesha be transformer, kwaye ixhotyiswe ngeekhabhathi ezimbini zembuyekezo ye-capacitor enomthamo wama-600 kVA, a itoni enye ye-medium-frequency induction furnace, i-800 kVA (10KV/0.4 kVA) inkqubo yonikezelo lwamandla obuchule obuchwephesha benguqu, ikhabhathi yembuyekezo ye-capacitor enomthamo wama-300 kVA.Umzobo wenkqubo yonikezelo lwamandla ngolu hlobo lulandelayo:
Amandla abonakalayo e-intermediate frequency induction furnace exhotyiswe nge-2000KVA transformer yi-700KVA-2100KVA, amandla asebenzayo yi-P=280KW-1930KW, umthwalo osebenzayo yi-Q=687KAR-830KAR, into yamandla yi-PF=0.4-0.92, kwaye yangoku ekusebenzeniⅰ = 538 A-1660 A, amandla abonakalayo e-intermediate frequency induction furnace exhotyiswe nge-800KVA transformer yi-200KVA-836KVA.Amandla asebenzayo yi-P = 60KW-750KW, umthwalo osebenzayo yi-Q=190KAR-360KAR, i-factor factor is PF = 0.3-0.9, kunye nokusebenza ngoku i = 288 A-1200 A. Ngenxa yokuba ikhabhinethi yembuyekezo ye-capacitor ayikwazi ukubekwa. ukusebenza (imbuyekezo ezenzekelayo ihluleka, xa i-capacitor isetyenziswa ngesandla, ingxolo ye-capacitor ayiqhelekanga, i-breaker circuit breaker, i-capacitor ipakishwe, i-oyile ivuza, iqhekekile, kwaye ayinakusetyenziswa), amandla enyanga abanzi. PF=0.78, kunye nenzala yenyanga yemali-mboleko ihlengahlengiswa ibe ngaphezulu kwe-32,000 yeyuan.
Uhlalutyo lwemeko yeNkqubo yaMandla
Umthwalo ophambili wobonelelo lwamandla olulungisiweyo kwisithando somlilo esiphakathi ngamaza aphakathi zii-ballasts ze-pulse enye.Isixhobo sokuhlaziya sivelisa i-harmonics eninzi xa siguqula i-AC yangoku kwi-DC, eyona mthombo we-harmonics.I-harmonic yangoku ekwaziswe kwigridi yamandla iya kubangela amandla ombane osebenzayo we-harmonic kwi-impedance yeempawu zegridi yamandla, okukhokelela ekulahlekeni kwesakhelo sombane osebenzayo kunye nokukhoyo kwegridi yamandla, kubeka emngciphekweni umgangatho kunye nokusebenza kokhuseleko lwenkqubo yonikezelo lwamandla, ukwanda. ilahleko yentambo kunye nokunxaxha kombane osebenzayo, kunye nokwenza umonakalo kwigridi yamandla kunye nokusetyenzwa Isixhobo sombane somzi-mveliso siya kubangela iingozi ezimbi.Xa ibhanki ye-capacitor yembuyekezo yamandla esebenzayo ifakwa ekusebenzeni, ngenxa yokuba i-harmonic i-impedance ye-harmonic yebhanki ye-capacitor incinci, inani elikhulu le-harmonics lingeniswa kwibhanki ye-capacitor, kwaye i-capacitance yangoku ikhula ngokukhawuleza, ichaphazela kakhulu ubomi bayo benkonzo.Kwelinye icala, xa i-harmonic capacitive reactance yebhanki ye-capacitor ilingana ne-harmonic inductive reactance yenkqubo kunye ne-resonance series, i-harmonic current yandiswa kakhulu (i-2-10 amaxesha), okukhokelela ekugqithiseni kunye nomonakalo i-capacitor.Ukongezelela, i-harmonics iya kubangela ukuba i-DC sinusoidal wave itshintshe, ibangele i-sawtooth peak wave, ekulula ukubangela ukukhutshwa okuyingxenye kwizinto ezikhuselayo.Ukukhutshwa kwexesha elide kuya kukhawulezisa ukuguga kwezinto ezikhuselayo kwaye kubangele lula umonakalo we-capacitor.Ke ngoko, ikhabhinethi yembuyekezo yamandla esebenzayo ye-capacitor ayinakusetyenziselwa imbuyekezo yesithando somlilo esiphakathi, kunye nesixhobo sembuyekezo samandla esicociweyo esine-pulse yangoku yoxinzelelo kufuneka sikhethwe.
Isicwangciso sonyango lwembuyekezo yamandla asebenzayo
Iinjongo zolawulo
Izixhobo zokucoca imbuyekezo ziyilelwe ukuhlangabezana neemfuno zolawulo lokucinezela i-harmonics kunye namandla asebenzayo.
Kwimo yokusebenza ye-0.75KV kunye ne-0.4KV iinkqubo, emva kokuba izixhobo zembuyekezo zokucoca zishiya i-factory, i-harmonics ye-high-order icinezelwe kwi-avareji yamandla yenyanga ye-0.95 okanye ngaphezulu.
Igalelo lesihluzo sembuyekezo yelophu aliyi kubangela ipulse current resonance okanye iresonance overvoltage kunye overcurrent.
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
Iimeko zobugcisa zembuyekezo yamandla asebenzayo;I-JB/T9663-1999 “I-Low-voltage reactive power automatic controller imbuyekezo” Ixabiso lomda wangoku weHarmonic we-low-voltage yombane kunye nezixhobo zombane;GB/T 17625.7-1998
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, inkampani yethu iye yaqulunqa iseti yenkqubo yokucoca amandla aphakathi aphakathi kwe-frequency induction.Qwalasela ngokupheleleyo amandla omthwalo kunye noxinzelelo lwe-harmonic, kwaye ufake iseti yezihluzo zembuyekezo yamandla asezantsi-voltage asebenzayo kwicala lamandla ombane asezantsi kwi-0.75KV yenkampani kunye ne-0.4KV iziguquli zokucinezela i-harmonics, ukubuyisela amandla asebenzayo, kunye nokuphucula into yamandla.Ngethuba lokusebenza kwesithando somlilo esiphakathi, isixhobo sokuhlaziya senza i-6K + 1 i-harmonics, kwaye uchungechunge lwe-Fourier lusetyenziselwa ukubola nokuguqula okwangoku ukuvelisa i-5 harmonics ye-250HZ kunye ne-7 harmonics ngaphezu kwe-350HZ.Ke ngoko, kuyilo lwe-intermediate frequency induction furnace filter reactive power imbuyekezo, ukuphindaphinda kwe-250HZ, 350HZ kunye nokujikeleza kufuneka kuyilwe ukuqinisekisa ukuba isihluzi sembuyekezo loop sinokucinezela ngokufanelekileyo i-pulse yangoku ngelixa ubuyekeza umthwalo osebenzayo kunye nokuphucula into yamandla.
umsebenzi woyilo
Umbane obanzi we-2-ton intermediate frequency induction furnace ehambelana ne-2000 kVA transformer ihlawulwa ukusuka kwi-0.78 ukuya malunga ne-0.95.Isixhobo sembuyekezo yesihluzi kufuneka sixhotyiswe ngesakhono se-820 kVA, kwaye siguqule ngokuzenzekelayo sibe ngamaqela ama-6 obuchule, ngalinye lihambelana nokuvunguza kwicala elisezantsi lombane we-transformer yembuyekezo.Umthamo wohlengahlengiso lokuhlelwa kwebakala yi-60KVAR, enokuthi ihlangabezane neemfuno ezahlukeneyo zamandla zesithando somlilo esiphakathi.Umbane obanzi we-1 ton intermediate frequency induction furnace ehambelana ne-800 kVA transformer ihlawulwa ukusuka kwi-0.78 ukuya malunga ne-0.95.Isixhobo sembuyekezo yokucoca kufuneka sixhotyiswe ngomthamo we-360 kVA, enokuthi iguqulwe ngokuzenzekelayo ibe ngamaqela ama-6 omthamo, kwaye umthamo wohlengahlengiso ohleliweyo ngu-50 kVA, onokuhlangabezana neemfuno zamandla ezahlukeneyo zesithando somlilo se-intermediate frequency induction.Olu hlobo loyilo luqinisekisa ngokupheleleyo ukuba amandla ahlengahlengisiweyo angaphezulu kwe-0.95.
Uhlalutyo lwesiphumo emva kokufakwa kwembuyekezo yesihluzi
Ekuqaleni kukaJuni ka-2010, isixhobo sembuyekezo samandla esisebenzayo esiphakathi kwesithando somlilo safakelwa saza sasetyenziswa.Isixhobo silandelela ngokuzenzekelayo utshintsho lomthwalo we-intermediate frequency induction furnace, ihlawulela ngokukodwa umthwalo osebenzayo, kwaye iphucula into yamandla.iinkcukacha ngolu hlobo lulandelayo:
Emva kokuba isixhobo sembuyekezo sokucoca sivulwe, ijika lokutshintsha amandla limalunga ne-0.97 (into yamandla xa isixhobo sembuyekezo sicinyiwe simalunga ne-0.8)
Umsebenzi wokulayisha
Okwangoku ye-transformer ye-2000KVA iyancipha ukusuka kwi-1530A ukuya kwi-1210A, iyancipha i-21%;yangoku ye-800KVA i-transformer iyancipha ukusuka kwi-1140A ukuya kwi-920A, ukuhla kwe-19.3%, elingana nokunciphisa i-20% ye-transformer, oko kukuthi, i-560KVA, kunye nomonakalo wamandla ophumayo emva kwembuyekezo iyancipha ngama-21%.;Umonakalo wokuguqula uncitshiswe yi-WT=?Pd1S2) 2**[1-(1-1/cos2)2]=24{(0.78?2800)/280}20.415(kwh).Ilahleko ye-transformer yi-24 yuan, kwaye ilahleko yenyanga yi-15KW=150d;imali yokugcina yenyanga yi-1580d=230d*30d(2307){0.782800}20d.
imeko amandla factor
Kule nyanga, i-comprehensive power factor yenkampani inyuke ukusuka kwi-0.78 ukuya kwi-0.97, ireyithi yenyanga esebenzayo kunye namatyala asetyenziswayo ahlengahlengiswa kwi-0, kwaye isohlwayo satshintshwa saya kwi-4,680 yuan.Ukususela ngoko, amandla enyanga ahlala kwi-0.97-0.98, kwaye umvuzo wenyanga uphakathi kwe-3,000-5,000 yuan.
Ngokubanzi, le mveliso inesakhono esihle kakhulu sokucinezela i-pulse yangoku kunye nokuhlawula amandla asebenzayo, ukusombulula ingxaki yexesha elide yenkampani yokuzala izinga lenzala kunye nezohlwayo zomrhumo, ukuphucula umthamo wemveliso ye-transformers, kwaye uzise inzuzo ecacileyo yezoqoqosho kwinkampani , Yafunyanwa. utyalo-mali lomthengi ngaphantsi konyaka.Ke ngoko, imbuyekezo yamandla asebenzayo yesithando somlilo esiphakathi eyenziwe yinkampani yanelisa kakhulu, kwaye iya kutsala abathengi abaninzi kwixesha elizayo.
Ixesha lokuposa: Apr-14-2023