Ulwazi olusisiseko lwabasebenzisi
Inkampani yemveliso yeplastiki ikakhulu ivelisa ilaphu lebhokisi yentengiso yangaphakathi nangaphandle, ilaphu lokutshiza, kunye neemveliso zefilimu eziqengqelekayo zePVC.Izixhobo zemveliso zenkampani zinemigca emine yokuvelisa ifilimu ejikelezileyo ye-PVC, kunye nomgca wemveliso yokutshiza kunye nemigca emibini yokuvelisa ifoto, Inxalenye yamandla ithatha i-frequency conversion drive motor kunye ne-DC motor, iiseti ze-1000KVA, iiseti ezi-2 ze-1250KVA transformers, 2 iiseti ze-800KVA ze-transformers, i-1 isethi ye-630KVA ye-transformers, kunye nepleyiti yembuyekezo yomthamo ibekwe kwicala eliphantsi lombane we-transformer.Umzobo wenkqubo yonikezelo lwamandla ngolu hlobo lulandelayo:
Eyona datha yokusebenza
I-transformer ye-2000KVA ixhotyiswe ngesithando somlilo esiphakathi kunye ne-inverter inamandla amakhulu e-1500KVA, eyona nto inamandla yi-PF = 0.82, ukusebenza ngoku yi-2250A, i-harmonics ubukhulu becala ye-5 kunye ne-7, kwaye izinga lokuphazamiseka kwangoku lilonke liyi-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 zobugcisa JB/T9663-1999 “I-low-voltage reactive power isilawuli sembuyekezo ezenzekelayo” I-High-order harmonic yangoku yexabiso lomda ukusuka kumandla ombane 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
Isethi nganye ye-2000KVA ye-transformer ihambelana nesithando somlilo esiphakathi kwaye i-factor factor comprehensive power of the inverter ihlawulwa ukusuka kwi-0.8 ukuya phezulu kwe-0.95, i-harmonic ye-5 iyancitshiswa ukusuka kwi-420A ukuya kwi-86A, kwaye i-harmonic ye-7 iyancipha ukusuka kwi-230A ukuya kwi-46A.Isixhobo sembuyekezo sokucoca kufuneka sifakwe kunye nomthamo we-1060KVar.Yahlulahlulwe yangamaqela ama-6 omthamo wokutshintsha okuzenzekelayo, okuhambelana neziko eliphakathi, imbuyekezo yokubonelela ngombane wombane wokubuyisela imbuyekezo, yahlulwe yangamaxesha ama-5, amaxesha angama-7 kunye nembuyekezo yembuyekezo yokucoca indlela yokutshintsha ngokuzenzekelayo, ukuhlangabezana neziko eliphakathi, isihluzo sokuguqula kunye amandla asebenzayo Iimfuno zoyilo 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 kumzobo ongezantsi: 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)
Iimeko zokusebenza komthwalo Okhoyo ngoku osetyenziswa yisethi nganye ye-2000KVA transformers iyancitshiswa ukusuka kwi-2250A ukuya kwi-1860A, i-drop ye-17%;ixabiso elincitshisiweyo lokulahlekelwa kwamandla emva kwembuyekezo 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 16 * 20 * 30 * 10 * 0.7 = 67,000 (Ngokusekelwe ekusebenzeni iiyure ezingama-20 ngosuku. , iintsuku ezingama-30 ngenyanga, neenyanga ezili-10 ngonyaka, i-0.7 yuan ngekilowatt-yure yombane);ibhili yombane egciniweyo ngenxa yokucuthwa kwee-harmonics: Ilahleko ebangelwa yimisinga ye-harmonic kwiziguquli ikakhulu ngenxa yokwanda kwelahleko ye-ferromagnetic kunye nokulahleka kweCopper kunye nokulahleka kwe-ferromagnetic kunxulumene namandla esithathu e-harmonic frequency yangoku.Ngokuqhelekileyo, i-2% ~ 5% ithathwa kubunjineli, kwaye i-2% ithathwa kumthwalo wokulungisa, oko kukuthi: WS = 2000 * 6000 * 0.7 * 0.02≈168,000 yuan, Oko kukuthi, i-bill yombane ingagcinwa unyaka wonke. (6.7+16.8)*2=47 (10,000 yeeyuan).
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