Ulwazi oluyisisekelo lwabasebenzisi
Inkampani yomkhiqizo wepulasitiki ikhiqiza ikakhulukazi indwangu yebhokisi elikhanyayo langaphakathi nangaphandle, indwangu yesifutho, kanye nemikhiqizo yefilimu egoqwe ye-PVC.Imishini yokukhiqiza yenkampani inemigqa emine yokukhiqiza ifilimu egoqelwe ngobubanzi emine ye-PVC, enomugqa wokukhiqiza we-spray kanye nemigqa emibili yokukhiqiza yezithombe ezisebenzisekayo, Ingxenye yamandla isebenzisa i-frequency conversion drive motor kanye ne-DC motor, amasethi angu-1000KVA, amasethi angu-2 wama-1250KVA transformers, 2 amasethi angu-800KVA ama-transformer, isethi engu-1 yama-630KVA transformers, kanye nepuleti lesinxephezelo somthamo isethwe ohlangothini lwe-voltage ephansi ye-transformer.Umdwebo wesistimu yokunikezwa kwamandla umi kanje:
Idatha yangempela yokusebenza
I-transformer ye-2000KVA efakwe isithando somlilo esiphakathi nendawo kanye ne-inverter inamandla amakhulu angu-1500KVA, isici samandla sangempela yi-PF=0.82, ukusebenza kwamanje ngu-2250A, ama-harmonics ngokuyinhloko angu-5th kanye ne-7th, futhi inani eliphelele lamanje lokuhlanekezela lingama-23.6% .
Ukuhlaziywa Kwesimo Sesistimu Yamandla
Umthwalo oyinhloko wesithando somlilo sokungeniswa kwefrikhwensi emaphakathi, isithando somlilo esimaphakathi esimaphakathi kanye nesilungisisi esishintshashintshayo samandla yi-6th pulse rectifier.Imishini yokulungisa ikhiqiza amandla amaningi okushaya lapho iguqula i-AC yamanje ibe yi-voltage ye-AC.I-harmonic current eyethulwa kugridi yamandla ingabangela i-pulse I-voltage yokusebenza yamanje, okuholela ekuguquguqukeni ku-voltage osebenzayo kanye neyamanje, ibeke engcupheni ikhwalithi nokuphepha kokusebenza kokushintshwa kwamandla, ukwandisa ukulahleka kolayini nokuphambuka kwamandla kagesi, futhi kuthinte kabi igridi yamandla kanye impahla kagesi yesikhungo samandla ngokwaso.
Isixhumi esibonakalayo sekhompiyutha yesilawuli sohlelo (i-PLC) siyazwela ekuhlanekeni kwe-harmonic kagesi osebenzayo wokushintshwa kwamandla kagesi.Ngokuvamile kubalulwe ukuthi ingqikithi yokulahleka kozimele we-voltage esebenzayo yamanje (THD) ingaphansi kuka-5%, kanye ne-voltage esebenzayo yamanje ye-pulse Uma izinga lohlaka liphezulu kakhulu, iphutha lokusebenza kohlelo lokulawula lingaholela ekuphazamisekeni ukukhiqiza noma ukusebenza, okuholela engozini enkulu yesibopho sokukhiqiza.
Ngakho-ke, isinxephezelo samandla asebenzayo aphansi we-voltage yesihlungi esinomsebenzi wesihlungi samanje se-pulse kufanele sisetshenziselwe ukunxephezela umthwalo osebenzayo futhi kuthuthukiswe isici samandla.
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, inkampani iklame isethi yezinhlelo zokunxeshezelwa kwamandla asebenzayo anemininingwane yesithando somlilo esiphakathi nendawo kanye ne-inverter power supply.Uma kucatshangelwa isici samandla omthwalo kanye nesihlungi samanje se-pulse, Isethi yesinxephezelo samandla asebenzayo esihlungi esine-voltage ephansi, ihlunga i-pulse current, inxephezele umthwalo osebenzayo, futhi ithuthukise isici samandla.
Kuyo yonke inqubo yesithando somlilo esiphakathi nendawo nesiguquli, izingxenye eziphelele zikhiqiza ama-pulse currents angu-6K, aguqulwa ngokuvumelana nokugeleza kwamanje kochungechunge lwe-Fourier, futhi izici ze-pulse currents zikhiqizwa ku-5250Hz naku-7350Hz.Ngakho-ke, lapho uklama isinxephezelo samandla asebenzayo esihlungi, isiqalisi esithambile kanye nohlelo lokuklama imvamisa engu-350Hz luqinisekisa ukuthi isinxephezelo samandla esinxephezelo sesihlungi sinengqondo futhi isinxephezelo samandla okukhipha amandla esihlungi samanje siyathuthukiswa ukuze kuthuthukiswe isici samandla ukuze isoftware yohlelo ishayela ngokuhambisana ne-GB/T3 ngazwi-linye.
umsebenzi wokuklama
Isethi ngayinye ye-2000KVA transformer ihambisana nesithando somlilo esimaphakathi futhi isici samandla esiphelele se-inverter sinxeshezelwa kusukela ku-0.8 kuya phezulu kwe-0.95, i-harmonic yesi-5 iyancipha isuka ku-420A iye ku-86A, futhi i-harmonic yesi-7 iyancipha isuka ku-230A iye ku-46A.Idivayisi yesinxephezelo sesihlungi idinga ukufakwa ngomthamo ongu-1060KVar.Ihlukaniswe ngamaqembu ayi-6 omthamo wokushintsha okuzenzakalelayo, okuhambelana nesithando somlilo esiphakathi, isinxephezelo sesihlungi se-inverter rectifier power supply, ihlukaniswe izikhathi ezi-5, izikhathi ezingu-7 kanye nesinxephezelo esihle sokunxeshezelwa komgwaqo ukushintshwa okuzenzakalelayo, ukuhlangabezana nesithando somlilo esiphakathi, isihlungi se-inverter kanye amandla asebenzayo Izidingo zedizayini yesinxephezelo.
Lo mklamo uqinisekisa ngokugcwele ukuthi isilawuli se-harmonic sihambisana ne-GB/T 14549-93 kazwelonke ejwayelekile, futhi silungisa isici samandla sesithando somlilo esiphakathi nendawo nesiguquli semvamisa ngaphezu kuka-0.95.Njengoba kuboniswe esithombeni esingezansi: Ukuhlaziywa komphumela ngemva kokufakwa kwesinxephezelo sesihlungi
NgoJuni 2010, idivayisi yesinxephezelo samandla asebenzayo nesihlungi esishintshashintshayo yafakwa futhi yaqala ukusebenza.Idivayisi ilandelela ngokuzenzakalelayo izinguquko zomthwalo wesithando somlilo esimaphakathi nesiguquli sefrikhwensi, futhi empeleni isusa 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 lesici samandla ngemva kokusetshenziswa kwesinxephezelo sesihlungi cishe singu-0.97 (ingxenye ephakanyisiwe icishe ibe ngu-0.8 lapho kukhishwa idivayisi yesinxephezelo sesihlungi)
Izimo zokusebenza komthwalo Isimanje esisetshenziswa isethi ngayinye yama-2000KVA transformers yehliswa isuka ku-2250A iye ku-1860A, yehle ngo-17%;inani elincishisiwe lokulahlekelwa amandla ngemva kwesinxephezelo 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 ukongiwa kwezindleko zikagesi ngonyaka ngu-16*20*30*10*0.7=67,000 (Ngokusekelwe ekusebenzeni amahora angu-20 ngosuku. , izinsuku ezingu-30 ngenyanga, nezinyanga ezingu-10 ngonyaka, ama-yuan angu-0.7 nge-kilowatt-hora kagesi);isikweletu sikagesi esilondolozwe ngenxa yokuncishiswa kwama-harmonics: Ukulahlekelwa okubangelwa ama-harmonic currents kuma-transformers kubangelwa ikakhulukazi ukulahlekelwa kwe-ferromagnetic okwandisiwe kanye nokulahlekelwa kwe-Copper kanye nokulahlekelwa kwe-ferromagnetic kuhlobene namandla wesithathu we-harmonic current frequency.Ngokuvamile, i-2% ~ 5% ithathwa kwezobunjiniyela, futhi i-2% ithathelwa umthwalo wokulungisa, okungukuthi: WS=2000*6000*0.7*0.02≈168,000 yuan, Okusho ukuthi, isikweletu sikagesi singagcinwa unyaka wonke. (6.7+16.8)*2=47 (10,000 yuan).
isimo amandla factor
Isici esiphelele samalungelo enkampani sinyusiwe sisuka ku-0.8 saya ku-0.95, futhi isici samalungelo sanyanga zonke siye sagcinwa singu-0.96-0.98, ngomklomelo owengeziwe wama-yuan angu-6,000-10,000.
Sekukonke, isinxephezelo samandla asebenzayo aphansi we-MFF kanye nezihlungi ze-VF sinezihlungi ezinhle kakhulu futhi sinxephezela imithwalo esebenzayo, sixazulula inkinga yezinhlawulo zamandla asebenzayo, sandisa umthamo wokuphuma kwama-transformer, sithuthukisa ikhwalithi yamandla, sithuthukisa izici zokusetshenziswa kukagesi. imishini, futhi kunciphisa isinxephezelo samandla asebenzayo Ukusetshenziswa, ukuthuthukiswa kokusebenza kahle, izinzuzo ezibalulekile zezomnotho enkampanini, ukutshalwa kwezimali ngenani lokubuya elingaphansi konyaka kumakhasimende, njll. Ngakho-ke, inkampani yaneliseke kakhulu ngesinxephezelo sesithando somlilo esiphakathi nendawo kanye nesihlungi esisebenzayo sokulayisha amandla kagesi we-inverter, futhi sizokwethula amakhasimende amaningi esikhathini esizayo.
Isikhathi sokuthumela: Apr-14-2023