Ulwazi oluyisisekelo lwabasebenzisi
Imboni ye-petrochemical ikakhulukazi ikhiqiza imikhiqizo yegesi.Izinto zikagesi ezisetshenziswa yile nkampani ziwumthwalo womshayeli oyisiqalo esithambile, futhi isiguquli sokusabalalisa singu-2500 kVA.Umdwebo wesistimu yokunikezwa kwamandla umi kanje:
Idatha yangempela yokusebenza
Amandla aphelele esiguquli semvamisa ye-2500KVA transformer ngu-1860KVA, isici samandla esimaphakathi ngu-PF=0.8, kanti ukusebenza kwamanje ngu-2400-2700A.
Ukuhlaziywa Kwesimo Sesistimu Yamandla
Isihluthulelo sokunikezwa kwamandla kagesi ngumthwalo womshayeli we-rectifier inverter power supply, okuyingxenye yomthwalo wesistimu ehlukene.Izisetshenziswa zikhiqiza ama-harmonics amaningi phakathi nenqubo yokusebenza, okuwumthombo ojwayelekile we-harmonic.I-harmonic current eyethulwe kugridi yamandla izodala i-harmonic yokusebenza i-voltage kusici sokuvinjwa kwegridi yamandla, okuholela ekuguquguqukeni kwe-voltage esebenzayo kanye nokusebenza kwegridi yamandla, kubeke engcupheni ikhwalithi nokusebenza kokuphepha kohlelo lokuphakelwa kukagesi, okwandisa amandla kagesi. ukulahleka kolayini kanye nephutha le-voltage yokusebenza, kanye nokudanga umonakalo omkhulu kugridi yamandla kanye nezitshalo zokucubungula.Imishini yayo kagesi, ikakhulukazi iKhabhinethi yesinxephezelo samandla asebenzayo azodala imiphumela emibi, futhi kulula ukubangela ukudlidliza kwe-harmonic, okubangela ukulimala kwemishini kagesi njengamakhabethe e-capacitor.Ngakho-ke, isihlungi sokunxeshezelwa kwamandla asebenzayo ane-voltage ephansi esinomsebenzi wokucindezela we-harmonic kufanele sikhethwe ukuze kucindezelwe ama-harmonics esistimu, kunxephezele imithwalo esebenzayo, nokuthuthukisa isici samandla.
Hlunga uhlelo lokwelashwa kwesinxephezelo samandla asebenzayo
Imigomo yokubusa
Amadivayisi esinxephezelo esihlungi adizayinelwe ukuhlangabezana nezimfuneko zokulawula zokucindezelwa kwama-harmonics namandla asebenzayo.
Ngaphansi kwemodi yokusebenza yesistimu ye-0.4KV, ngemuva kokuthi isisetshenziswa sesinxephezelo sesihlungi sishiya imboni, ukucindezelwa kwe-harmonic kungaphezu kuka-0.92 ngokwesilinganiso samandla sanyanga zonke.
Ungabangeli i-harmonic resonance noma i-resonance overvoltage kanye ne-overcurrent ngenxa yesinxephezelo sesihlungi segatsha.
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” kusukela enanini eliphezulu lomkhawulo wamanje we-harmonic wamandla aphansi kanye nezisetshenziswa zikagesi.
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
Isinxephezelo samandla asebenzayo kagesi aphansi
Izimo zobuchwepheshe ze-oda lomlawuli DL/T597-1996
Ibanga eliphansi le-voltage yokuvikela indawo kagesi engu-GB5013.1-1997
Ama-switchgear ane-low-voltage kanye nemishini yokulawula
Design imibono
Ngokwesimo sangempela sebhizinisi, inkampani yethu icubungula ngokugcwele isici samandla omthwalo kanye nokucindezelwa kwe-harmonic kusihlungi isinxephezelo esingavumelekile se-inverter, futhi ifaka isihlungi sedivayisi yesinxephezelo esingavumelekile ohlangothini lwe-0.4KV low-voltage ye-transformer yebhizinisi, icindezela ama-harmonics futhi inxephezele ukwanda kwamandla asebenzayo.isici samandla.
Ngesikhathi sokusebenza kwe-frequency converter, izokhiqiza izikhathi ezi-5 ze-250HZ, izikhathi ezingu-7 ze-350HZ nezinye i-harmonics ye-oda eliphezulu.Ngakho-ke, lapho uklama isinxephezelo esingasebenzi kahle se-inverter, kufanele kuqinisekiswe ukuthi isifunda segatsha lesinxephezelo sesihlungi singacindezela ngempumelelo i-harmonics futhi sinxephezele amandla angasebenzi amafrikhwensi angaphezu kuka-250HZ no-350HZ ukuze kuthuthukiswe isici samandla.
umsebenzi wokuklama
Isici samandla esiphelele solayini wokukhiqiza ugesi oguquguqukayo ofaniswe nesiguquli ngasinye esingu-2500 kVA sinxeshezelwa sisuka ku-0.8 siye cishe ku-0.92.Impahla yesinxephezelo yedivayisi yokuhlunga kumele ifakwe enamandla angu-900 kWh.Amandla amaqembu angu-11 okuhlukaniswa kwesigaba afaniswa namawindi asohlangothini lwevoltheji engezansi ye-transformer ukuze axhumeke futhi anqanyulwe ngokuzenzakalelayo.Umthamo wokulungiswa kwezigaba ungu-45KVAR, ongahlangabezana nezidingo ezihlukahlukene zamandla zeziqalisi ezithambile nemigqa yokukhiqiza.Lolu hlobo lomklamo luqinisekisa ngokugcwele ukuthi isici samandla esilungisiwe siphezulu kuno-0.95.
Ukuhlaziywa komthelela ngemva kokufakwa kwesinxephezelo sesihlungi
NgoJuni 2011, isihlungi se-inverter isisetshenziswa sokunxephezela amandla asebenzayo safakwa futhi saqala ukusebenza.Idivayisi ilandelela ngokuzenzakalelayo ushintsho lomthwalo we-inverter, ngokushesha icindezela i-high-order pulse current ukunxephezela umthwalo osebenzayo, futhi ithuthukise isici samandla.imininingwane kanjena:
Ngemva kokuthi idivayisi yesinxephezelo sesihlungi isiqalile ukusetshenziswa, ijika lokushintsha isici samandla licishe libe ngu-0.98 (ingxenye ephakanyisiwe icishe ibe ngu-0.8 lapho kukhishwa idivayisi yesinxephezelo sesihlungi)
Layisha ukusebenza
Ukusebenza kwamanje kwe-2500KVA transformer kuncishisiwe kusuka ku-2700A kuya ku-2300A, futhi izinga lokunciphisa liyi-15%.Ngemva kwesinxephezelo, inani lokunciphisa ukulahlekelwa kwamandla ngu-WT=△Pd*(S1/S2)2*τ*[1-(cosφ1/cosφ2)2]=24×{(0.85×2000)/2000}2×0.4≈16 (kw h) Kufomula, i-Pd ukulahleka kwe-short-circuit ye-transformer, engu-24KW, futhi ukonga konyaka wezindleko zikagesi yi-16*20*30*10*0.7*2=134,000 yuan (ngokusekelwe ekusebenzeni kwe-20 amahora ngosuku, izinsuku ezingu-30 ngenyanga, nezinyanga ezingu-10 ngonyaka, 0.7 yuan kWh ngayinye).
isimo amandla factor
Isici samandla esiphelele senkampani sikhuphuke sisuka ku-0.8 saya ku-0.95 kule nyanga, futhi isici samandla sizogcinwa ku-0.96-0.98 ngenyanga ezayo, futhi umvuzo uzokwenyuka ngo-5000-6000 yuan ngoJanuwari.
Ngokuvamile, isinxephezelo samandla asebenzayo aphansi we-voltage ethambile yesihlungi esithambile sinekhono elihle kakhulu lokucindezela i-pulse yamanje kanye nokunxephezela amandla asebenzayo, ukuxazulula inkinga yokujeziswa kwamandla asebenzayo enkampani, ukwandisa umthamo ophumayo we-transformer, nokunciphisa amandla asebenzayo Ukusetshenziswa okwengeziwe komkhiqizo kwandisa umkhiqizo, kwaletha izinzuzo ezisobala zezomnotho enkampanini, futhi kwabuyisela ukutshalwa kwezimali kwekhasimende phakathi nonyaka owodwa.Ngakho-ke, isinxephezelo samandla asebenzayo sesiqalisi esithambile esikhiqizwe yinkampani sanelisa kakhulu, futhi sizoheha amakhasimende amaningi esikhathini esizayo.
Isikhathi sokuthumela: Apr-14-2023