Ulwazi oluyisisekelo lwabasebenzisi
Inkampani egoqa insimbi ikhiqiza ikakhulukazi insimbi eyindilinga egoqelwe eshisayo enencazelo engu-16mm~φ150mm.Ingxenye yamandla yolayini wokukhiqiza wenkampani ishayelwa yimoto ye-DC futhi ifakwe ama-transformer amabili angu-3150KVA.Umdwebo wesistimu yokunikezwa kwamandla umi kanje:
Idatha yangempela yokusebenza
Isilinganiso samandla semoto engu-3150KVA DC brushless motor ngu-PF=0.75, ukusebenza kwamanje ngu-2650A, ukushaya kwenhliziyo okuyinhloko izikhathi ezingu-5, izikhathi ezingu-7, kanti isilinganiso samanje sokuguqulwa singu-19.5%.
Ukuhlaziywa Kwesistimu Yamandla
Umthwalo oyinhloko we-DC brushless motor ballast ama-ballast angu-6 e-single-pulse.Imishini ye-ballast ikhiqiza inani elikhulu le-pulse yamanje ekusebenzeni kwe-AC, AC, ne-DC.Kungumthombo wamanje we-pulse evamile.Lapho yethulwa kugridi yamandla, i-harmonic current I-voltage yokusebenza yamanje ye-pulse ibangelwa ukuthikamezeka kwesici senethiwekhi yamandla, okuholela ekuphumeni kohlaka lwe-voltage yokusebenza kanye yamanje, okubeka engcupheni ikhwalithi nokusebenza kokuphepha. wokushintshwa kwamandla kagesi, kwandisa ukulahleka kolayini kanye nokuchezuka kwe-voltage yokusebenza, futhi kunomthelela omubi kunethiwekhi yamandla nezinto zikagesi ngokwazo.
Hlunga uhlelo lokwelashwa kwesinxephezelo samandla asebenzayo
Imigomo yokubusa
Idizayini yempahla yesinxephezelo yesihlungi ihlangabezana nezidingo zokucindezelwa kwe-harmonic kanye nokuphathwa kokucindezelwa kwamandla okusebenzayo.
Ngaphansi kwemodi yokusebenza yesistimu engu-0.4KV, ngemva kokuthi isisetshenziswa sesinxephezelo sesihlungi sesiqalile ukusebenza, ishayela liyacindezelwa, futhi isilinganiso samandla sanyanga zonke sicishe sibe ngu-0.92.
I-high-order harmonic resonance, i-resonance overvoltage, kanye ne-overcurrent okubangelwa ukuxhuma kumjikelezo wegatsha lesinxephezelo sesihlungi ngeke kwenzeke.
Umklamo Ulandela Amazinga
Ikhwalithi yamandla Ama-harmonics egridi yomphakathi GB/T14519-1993
Ikhwalithi yamandla Ukushintshashintsha kwe-Voltage nokucwayiza kwe-GB12326-2000
Izimo zobuchwepheshe ezijwayelekile zedivayisi yesinxephezelo samandla asebenzayo aphansi-voltage GB/T 15576-1995
Idivayisi yesinxephezelo samandla asebenzayo we-low-voltage JB/T 7115-1993
Izimo zobuchwepheshe zesinxephezelo samandla asebenzayo JB/T9663-1999 “Isilawuli sesinxephezelo esizenzakalelayo samandla asebenzayo aphansi-voltage asebenzayo” Inani lomkhawulo wamanje we-harmonic we-oda eliphezulu kusuka kumandla aphansi kanye nempahla kagesi GB/T17625.7-1998
Imigomo ye-Electrotechnical Amandla capacitor GB/T 2900.16-1996
I-voltage ephansi ye-shunt capacitor GB/T 3983.1-1989
I-Rector GB10229-88
I-Reactor IEC 289-88
I-oda yesilawuli sesinxephezelo samandla asebenzayo aphansi asebenzayo izimo zobuchwepheshe DL/T597-1996
Ibanga eliphansi le-voltage yokuvikela indawo kagesi engu-GB5013.1-1997
I-low-voltage ephelele yokushintsha kanye nemishini yokulawula GB7251.1-1997
Design imibono
Ngokwesimo esithile senkampani, uhlelo lwesinxephezelo samandla asebenzayo esihlungi se-DC brushless motor lakhiwe kucatshangelwa isici samandla okulayisha kanye nokucindezela kwamanje kwe-pulse, kanye nesethi yesinxephezelo samandla asebenzayo esisefa aphansi angu-0.4kV. I-voltage side ye-transformer , ukucindezela i-pulse current, nokunxephezela umthwalo osebenzayo, nokuthuthukisa isici samandla.I-ballast ikhiqiza i-6K-1 pulse current kunqubo ye-brushless DC motor, futhi isebenzisa i-cascaded current ukuze incibilikise yamanje, futhi yamanje encibilikisiwe icishe ibe ngu-5250Hz kanye no-7350Hz.Ngakho-ke, isinxephezelo samandla asebenzayo esihlungi kumele sakhelwe u-250Hz, 350Hz nezinye imvamisa ukuze kuqinisekiswe ukuthi umjikelezo wesinxephezelo sesihlungi ungahlunga ngempumelelo amandla okukhiphayo wamanje, uthuthukise isici samandla, futhi wenze i-pulse yesistimu ihambisane ne-GB/T3 .
umsebenzi wokuklama
Isici samandla esiphelele se-3150KVA transformer inxeshezelwa ukusuka ku-0.72 kuya cishe ku-0.95.Imishini yesinxephezelo yesihlungi kufanele ifakwe ne-2100KVar, futhi ihlukaniswe ngamaqembu angu-6 okushintshashintsha ukuze kunxephezele ukucindezela ohlangothini oluphansi lokujika kwe-transformer, futhi ulungise ivolumu ibe ngu-95KVAR, kucatshangelwa izidingo zamandla okukhipha umugqa wokukhiqiza.
Ukuhlaziywa komthelela ngemva kokufakwa kwesinxephezelo sesihlungi
Ngo-April 2011, idivayisi ye-DC motor filter reactive power compensation yafakwa futhi yaqala ukusebenza.Idivayisi ilandelela ngokuzenzakalelayo izinguquko zomthwalo wenjini ye-DC, futhi empeleni ihlunge ama-harmonics e-oda eliphezulu ukunxephezela amandla asebenzayo futhi ithuthukise isici samandla.imininingwane kanjena:
Umdwebo wokusabalalisa we-Harmonic spectrum
Layisha i-Waveform
Ngemva kokuthi idivayisi yesinxephezelo sesihlungi isiqalile ukusetshenziswa, ijika lokushintsha isici samandla licishe libe ngu-0.98 (ingxenye ephakanyisiwe icishe ibe ngu-0.7 lapho kukhishwa idivayisi yesinxephezelo sesihlungi)
Layisha ukusebenza
Isici samandla se-3150KVA transformer singaphezu kuka-0.95, i-harmonic yesi-5 iyancipha isuka ku-510A iye ku-102A, i-harmonic yesi-7 iyancipha isuka ku-300A iye ku-60A, futhi okwamanje esetshenzisiwe iyancipha isuka ku-2650A kuya ku-2050A, ihlehle ngo-23%.Ngemva kwesinxephezelo, inani lokunciphisa ukulahlekelwa kwamandla ngu-WT=△Pd*(S1/S2)2*τ*[1-(cosφ1/cosφ2)2]=35×{(0.72×3150)/3150}2×0.66≈33 (kw h) Kufomula, i-Pd ukulahleka kwe-short-circuit ye-transformer, engu-35KW, futhi ukonga ngonyaka wezindleko zikagesi ngu-33*20*30*10*0.7*2=280,000 yuan (ngokusekelwe ekusebenzeni kwe-20 amahora ngosuku, izinsuku ezingu-30 ngenyanga, nezinyanga ezingu-10 ngonyaka , 0.7 yuan nge-kilowatt-hora kagesi);ngenxa yokunciphisa ama-harmonics, isikweletu sikagesi silondoloziwe: Ukulahlekelwa kwe-transformer okubangelwa i-harmonic current ngokuyinhloko ukukhulisa ukulahlekelwa kwe-ferromagnetic nokulahlekelwa kwethusi.Ukulahleka kwe-ferromagnetic kuhlobene namandla esithathu efrikhwensi yamanje ye-harmonic.Ubunjiniyela Ngokujwayelekile, i-2% ~ 5% ithathwa.Ngomthwalo wokulungisa, kuthathwa u-2%, okungukuthi, i-WS=4300*6000*0.7*0.03≈360,000 yuan, okungukuthi, ukonga ngonyaka izindleko zikagesi ngu-28+36=64 (10,000 yuan).
isimo amandla factor
Isici esiphelele samalungelo enkampani sikhuphuke sisuka ku-0.72 saya cishe ku-0.95, isici samalungelo sanyanga zonke sisahleli ku-0.96-0.98, futhi umholo wanyanga zonke ususukela kumayuan angaphezu kuka-100,000 kuya ku-15,000 yuan.
I-DC motor filter low-voltage reactive power isinxephezelo sinamandla okucindezela i-pulse yamanje kanye nokunxephezela umthwalo wamandla asebenzayo, ukuxazulula inkinga yesijeziso samandla asebenzayo, ukwandisa umthamo wokuphuma kwe-transformer, ukunciphisa ukulahlekelwa kwesinxephezelo samandla asebenzayo, ukwandisa okukhiphayo, futhi ukunikeza Inkampani ikhiqize izinzuzo ezibalulekile zezomnotho, futhi iklayenti lithole utshalomali lwephrojekthi isikhathi esingaphansi konyaka.Ngakho-ke, inkampani yaneliseke kakhulu ngesinxephezelo samandla asebenzayo we-brushless DC motor filter, futhi izokwethula amakhasimende athile esikhathini esizayo.
Isikhathi sokuthumela: Apr-14-2023