Ulwazi olusisiseko lwabasebenzisi
Ishishini eliphambili le-hardware kunye nenkampani yezixhobo zokwakha ivelisa ngokukhuselekileyo i-PC ejikelezayo yentsimbi, iipleyiti zokuphela, imigca ye-galvanized, imigca yezinto eziphathekayo, i-30MnSi kunye nezinye izinto.Inkampani inemizila emi-4 yemveliso egqwesileyo, esebenzisa i-intermediate frequency heat kunye ne-DC variable frequency drive motors, ene-2000KVA2 (esetyenziswa kwi-tandem).Umzobo wenkqubo yonikezelo lwamandla ngolu hlobo lulandelayo:
Eyona datha yokusebenza
Umbane okhethekileyo we-PF = 0.82, i-current esebenzayo yi-2250A, i-pulse ephambili yangoku ngamaxesha angama-5, kwaye i-total yangoku iba yi-23.6%.
Uhlalutyo lwemeko yeNkqubo yaMandla
Owona mthwalo ophambili wesithando somlilo esiphakathi esiphakathi, isithando somlilo esiphakathi esiphakathi kunye nonikezelo lwamandla ombane wokulungisa i-inverter yi-6th pulse rectifier.Isixhobo sokuhlaziya sivelisa i-pulse yangoku eninzi xa siguqula i-AC yangoku ibe yi-AC yombane.I-harmonic yangoku efakwe kwigridi yamandla inokubangela i-pulse I-voltage esebenzayo yangoku, ekhokelela kuguquko kumbane osebenzayo kunye nowangoku, ibeka emngciphekweni umgangatho kunye nokhuseleko lokusebenza lokutshintsha umbane, ukwandisa ilahleko yomgca kunye nokuphambuka kombane osebenzayo, kunye nokuchaphazela kakubi igridi yamandla kunye izixhobo zombane zomzi-mveliso ngokwawo.
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, imbuyekezo yamandla asezantsi-voltage asebenzayo kwisihluzo esinomsebenzi we-pulse yangoku yokucoca kufuneka isetyenziswe 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, inkampani iye yaqulunqa iseti yezicwangciso zembuyekezo yamandla asebenzayo kwiziko eliphakathi kunye nonikezelo lwamandla ombane.Ukuqwalasela amandla omthwalo kunye nesihluzo sangoku se-pulse, iseti yembuyekezo yembuyekezo yamandla ephantsi-voltage esebenzayo, ukucoca ukubetha kwe-pulse yangoku, ukubuyisela umthwalo osebenzayo, kunye nokuphucula into yamandla.
Kuyo yonke inkqubo yesithando somlilo esiphakathi kunye nesiguquli, amacandelo apheleleyo avelisa i-6K ye-pulse currents, eguqulwa ngokuhambelana nokuhamba kwangoku kwechungechunge lwe-Fourier, kunye neempawu ze-pulse currents zenziwa kwi-5250Hz kunye ne-7350Hz.Ke ngoko, xa uyila imbuyekezo yamandla okucoca asebenzayo, isiqalisi esithambileyo kunye ne-350Hz isikimu soyilo lokuphindaphinda siqinisekisa ukuba isihluzi sembuyekezo yombane wesekethe sifanelekile kwaye imbuyekezo yombane wokucoca ipulse yangoku iyaphuculwa ukuze kuphuculwe into yamandla ukuze inkqubo yesoftware yepulse yangoku iphuculwe. ngokuhambelana ne-GB/T3 ngamxhelo-mnye.
umsebenzi woyilo
I-soft starter kunye ne-soft starter power factor yeqela ngalinye le-2000KVA i-transformers ihlawulwa ukusuka kwi-0.8 ukuya kwi-0.95, i-5th pulse current iyancipha ukusuka kwi-420A ukuya kwi-86A, i-7th ye-pulse yangoku iyancipha ukusuka kwi-230A ukuya kwi-46A, kwaye izixhobo zembuyekezo yokucoca kufuneka ifakwe kunye nomthamo we-1060KVar.Isihluzi sahlulwe ngamaqela ama-6, imbuyekezo yokucoca isetyenziselwa ukuqala okuthambileyo kunye nokunikezelwa kwamandla okutshintsha i-ballast, isihluzi sahlulwe sibe ngamaxesha angama-5, amaxesha angama-7, kwaye imbuyekezo yombane wembuyekezo yesekethe iguqulwa ngokuzenzekelayo ukuba iqwalasele isithando somlilo esiphakathi. , isihluzo kunye namandla asebenzayo Ulungiselelo lwesikimu soyilo lwembuyekezo.
Olu luyilo luqinisekisa ngokupheleleyo ukuba ulawulo lwe-harmonic luhambelana nomgangatho wesizwe we-GB / T 14549-93, kwaye ulungelelanisa umbane we-furnace ophakathi kunye nokuguqulwa kwamaza ngaphezulu kwe-0.95.Njengoko kubonisiwe ngezantsi:
Uhlalutyo lwesiphumo emva kokufakwa kwembuyekezo yesihluzi
NgoJuni ka-2010, isixhobo sombuyekezo wamandla esiguquguqukayo esiphakathi kunye nesiguquli-maza safakelwa saza sasetyenziswa.Isixhobo silandelela ngokuzenzekelayo utshintsho lomthwalo we-intermediate frequency furnace kunye ne-converter frequency, kwaye eneneni isusa ii-harmonics zomyalelo ophezulu ukuhlawulela amandla asebenzayo kunye nokuphucula into yamandla.iinkcukacha ngolu hlobo lulandelayo:
Idayagram yokusabalalisa i-Harmonic spectrum
Layisha iWaveform
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 yisethi nganye ye-2000KVA i-transformers iyancitshiswa ukusuka kwi-2250A ukuya kwi-1860A, ukuhla kwe-17%;emva kwembuyekezo, ixabiso lokunciphisa ilahleko amandla 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 (ngokomsebenzi weeyure ezingama-20 a usuku, iintsuku ezingama-30 ngenyanga, iinyanga ezili-10 ngonyaka, 0.7 yuan ngekilowatt-yure);amatyala ombane agcinwe ngenxa yokunciphisa i-harmonic: Ilahleko ebangelwa yi-harmonic yangoku kwi-transformer ikakhulu kukunyusa ilahleko ye-ferromagnetic kunye nokulahleka kobhedu, Ilahleko ye-ferromagnetic inxulumene namandla wesithathu we-harmonic yangoku frequency.Ngokuqhelekileyo, i-2% ~ 5% ithathwa kubunjineli, kwaye i-2% ithathwa kwimithwalo elungisiweyo, oko kukuthi: WS = 2000 * 6000 * 0.7 * 0.02≈168,000 yuan, oko kukuthi, ngonyaka Gcina umbane (6.7 + 16.8) * 2=47 (10,000 yeyuan).
imeko amandla factor
Amalungelo apheleleyo enkampani anyuswe ukusuka kwi-0.8 ukuya kwi-0.95, kwaye inqaku lenyanga lamalungelo ligcinwe kwi-0.96-0.98, kunye nomvuzo owongezelelweyo we-6,000-10,000 yuan.
Lilonke, imbuyekezo ye-low-voltage esebenzayo yembuyekezo yamandla e-MFF kunye ne-VF inezihluzi ezibalaseleyo kwaye ihlawulela imithwalo esebenzayo, isombulula ingxaki yezohlwayo zamandla asebenzayo, yandisa umthamo wokukhupha iziguquli, iphucula umgangatho wamandla, iphucula iimpawu zombane osetyenziswayo. izixhobo, kwaye kunciphisa esebenzayo imbuyekezo amandla Ukusetyenziswa, uphuculo olusebenzayo, inzuzo ebalulekileyo kwezoqoqosho kwinkampani, utyalo-mali ngereyithi yembuyekezo engaphantsi konyaka kubathengi, etc. Ngoko ke, inkampani yaneliseke kakhulu ngembuyekezo eziko intermediate frequency induction. kunye nomthwalo osebenzayo wesihluzi sonikezelo lwamandla ombane, kwaye uya kwazisa abathengi abaninzi kwixesha elizayo.
Ixesha lokuposa: Apr-14-2023