Ulwazi olusisiseko lwabasebenzisi
Umzi-mveliso wesamente uvelisa iintlobo ngeentlobo zekonkile yokwakha.Inkampani inemizila yemveliso ye-3.Umbane wokutshintsha umbane usebenzisa i-inverter drive motors, i-2000KVA2, i-630KVA i-transformer, kwaye i-transformer nganye ixhotyiswe ngekhabhinethi yembuyekezo ye-capacitor kwicala eliphantsi loxinzelelo.Umzobo wenkqubo yonikezelo lwamandla ngolu hlobo lulandelayo:
Eyona datha yokusebenza
Amandla emveliso ye-soft starter ye-2000KVA transformer yi-1720KVA, i-avareji yamandla e-PF=0.83, i-current esebenzayo yi-2500A, amandla yi-530KVA630KVA i-transformer, i-avareji yamandla yi-PF=0.87, kunye nokusebenza ngoku yi-770A.Ikhabhinethi yembuyekezo yamandla asebenzayo phantsi kwe-transformer nganye ihlala ineehambo zamandla, ukuvuza kweoli ye-capacitor, kunye nolwazi lwepaneli yokulawula engavumeli imisebenzi engaqhelekanga.Ngoko ke, i-factor comprehensive power factor yi-0.84 kuphela, kwaye isohlwayo samandla esisebenzayo simalunga ne-20,000 ngoJanuwari.Kwaye iinjini zemveliso kunye neziqalisi ezithambileyo ngamanye amaxesha zinokuphazamisa ukwenziwa.
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.
Xa ibhanki yembuyekezo yembuyekezo yamandla esebenzayo ifakwa ekusebenzeni, ngenxa yokuba i-pulse yangoku ye-impedance yebhanki ye-capacitor incinci, isixa esikhulu se-pulse yangoku singeniswa kukwakheka kwe-capacitor, kwaye isixa sangoku sanda ngokukhawuleza, sichaphazela ubomi bayo benkonzo. .Ngakolunye uhlangothi, xa i-pulse yangoku i-capacitor yebhanki ye-capacitor ilingana ne-inductor ye-pulse yangoku ye-software yenkqubo, ukunyuka kwe-harmonic current (i-2-10 amaxesha) kuya kubangela ukuba i-capacitor igqithise kwaye iyitshabalalise, kwaye I-pulse yangoku iya kubangela ukuba ukuphindaphinda kwamandla okuphuma kutshintshe.I-waveform ye-sinusoidal ingaphandle kwesakhelo, ibangele i-saw-tooth-shaped-shaped-shaped-shaped wave, kwaye iya kubangela ukukhutshwa kwenxalenye ye-insulating layer material, ngaloo ndlela ikhawulezisa i-embrittlement ye-insulating layer material, kwaye ibangele umonakalo kwi-capacitor.Ke ngoko, ikhabhinethi yembuyekezo yamandla asebenzayo ye-capacitor ayinakusetyenziselwa imbuyekezo yamandla e-inverter, kwaye isihluzi esinoxinzelelo lwe-pulse yangoku kufuneka sikhethelwe imbuyekezo yamandla asebenzayo asezantsi.
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
ingcamango yoyilo
Ngokwemeko ethile yenkampani, amandla ombane kunye noxinzelelo lwangoku lujongwa kwisihluzi sembuyekezo ye-inverter yamandla ombane, kunye nesixhobo sembuyekezo yokusilela kwesihluzi sibekwe kwicala le-0.4kV yevoltage esezantsi ye-transformer, enokuthi icinezele. i-pulse current kwaye ubuyekeze ukuphuculwa kwezinto zamandla.
Kwi-converter, i-ballast ivelisa i-6K-1 i-pulse currents eziphambili ngokuhambelana ne-Fourier series flow flowing, kwaye emva koko ivelise i-5 ye-pulse currents eziphambili, nganye malunga ne-250Hz kunye ne-7350Hz.Ke ngoko, xa kuyilwa imbuyekezo yamandla asebenzayo kwiziko eliphakathi lokungeniswa kwamaza, kuyafuneka ukuyila iifrikhwensi ezijikeleze i-250Hz kunye ne-350Hz ukuqinisekisa ukuba isebe lembuyekezo yokucoca inokucinezela ngokufanelekileyo imisinga ye-pulse, ukubuyisela imithwalo esebenzayo ngaxeshanye, kunye nokuphucula amandla.
umsebenzi woyilo
Umba wamandla obanzi wentambo yamandla eguquliweyo edityanisiweyo ye-2000kV AC transformer ibuyekezwa ukusuka ku-0.8 ukuya ku-0.95.Isixhobo sembuyekezo yokucoca kufuneka sixhotyiswe ngevolumu ye-760kV, kwaye iguqulelwe ngokuzenzekelayo kwiiseti ze-8 zemiqulu, kunye nesethi enye isebenzisana nembuyekezo ejikelezayo kwicala elisezantsi lombane we-transformer.Umsebenzi wokulungiswa kweklasi ngu-45KVAR, onokuhlangabezana neemfuno ezahlukeneyo zamandla omgca wokuvelisa.Umba wamandla obanzi we-630kV ye-transformer paired converter line iye yahlawulwa, kwaye uluhlu lwembuyekezo lusuka kwi-0.8 ukuya kwi-0.95.Isixhobo sembuyekezo yesihluzi kufuneka sixhotyiswe ngevolumu ye-310kV, ethi iguqulelwe ngokuzenzekelayo kwiiseti ezine zemithamo, kwaye iseti enye isebenzisana ne-resistor ejikelezayo kwicala elisezantsi lombane we-transformer yembuyekezo.Umsebenzi wokulungiswa kweklasi ngu-26KVAR, onokuhlangabezana neemfuno ezahlukeneyo zamandla omgca wokuvelisa.Uyilo lwesikimu luqinisekisa ngokupheleleyo ukuba amandla ombane adlula i-0.95.
Uhlalutyo lwesiphumo emva kokufakwa kwembuyekezo yesihluzi
NgoJulayi 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 isetyenziswe ngabaguquli be-2000KVA iyancipha ukusuka kwi-2500A ukuya kwi-2120A, i-drop ye-15%;okwangoku esetyenziswa ngabaguquli be-630KVA iyancipha ukusuka kwi-770A ukuya kwi-620A, ukuhla kwe-19%.Emva kwembuyekezo,thepowerlossreductionvalueisWT=△Pd*(S1/S2)2*τ*[1-(cosφ1/cosφ2)2]=50×{(0.85×4500)/4500}2×0.4≈34(kw h) ifomula, iPd yilahleko yesiphaluka esifutshane ye-transformer, eyi-50KW, kunye nokugcinwa kweendleko zombane ngonyaka yi-34 * 20 * 30 * 10 * 0.7 = 142,800 yuan (ngokusekelwe ekusebenzeni iiyure ezingama-20 ngosuku, iintsuku ezingama-30 ngenyanga , iinyanga ezili-10 ngonyaka, i-0.7 yuan nge-kWh nganye).
imeko amandla factor
Isalathiso sobunjineli bamandla enkampani iye yanda ukusuka kwi-0.8 ukuya kwi-0.95, kwaye isalathiso sobunjineli samandla enyanga sihleli kwi-0.96-0.98, sinyuka ukusuka kwi-yuan engaphezu kwama-20,000 ngenyanga ukuya kwi-yuan eyi-6,000-10,000 ngenyanga.
I-low-voltage reactive power imbuyekezo ye-frequency conversion filter inamandla okucinezela i-pulse yangoku kunye nokubuyisela umthwalo osebenzayo, ukusombulula ingxaki yesohlwayo samandla asebenzayo, ukwandisa umthamo wemveliso ye-transformer, ukunciphisa ilahleko yembuyekezo yamandla asebenzayo, ukwandisa imveliso, nokuzisa inzuzo kwinkampani Iinzuzo ezicacileyo zoqoqosho ziye zaveliswa, kwaye utyalo-mali lweprojekthi yomthengi lungaphantsi kokufunyanwa kotyalo-mali lweprojekthi yonyaka omnye.Ke ngoko, inkampani yaneliseke kakhulu ngembuyekezo yamandla esebenzayo yesihluzo sokuguqula, kwaye iya kwazisa abathengi abathile kwixesha elizayo.
Ixesha lokuposa: Apr-13-2023