I-transformer eyinhloko yesistimu yokusabalalisa amandla okugaya i-rectifier transformer enamandla angu-0.4/0.66/0.75 kV, futhi umthwalo oyinhloko injini eyinhloko ye-DC.Ngoba ukudluliswa kwamandla nokusatshalaliswa kwedivayisi ye-extruder rectifier yomsebenzisi ngokuvamile kusebenzisa izinhlobo ezimbili zobuchwepheshe bokulungisa amapulse ayisithupha, okukhiqiza inani elithile le-pulse current (6N+1) ngamadigri ahlukene ohlangothini lwe-low-voltage, futhi ikakhulukazi (6N +1) ohlangothini lwe-high-voltage.12N+1) Bonisa imodi eyishumi nambili yokulungisa ishayela elilodwa.
Ukulimala kwe-harmonics yobunjiniyela bamandla kugridi yamandla kuncike ekulimaleni kwamandla kagesi e-harmonic emishinini nasezisetshenziswa kugridi yamandla, okungukuthi, i-voltage yokusebenza ye-harmonic idlula izinga imishini nemishini engalithwala.Iqembu eliphakela amandla libophezelekile ku-voltage esebenzayo yamanje yenethiwekhi yokuphakela amandla, futhi umsebenzisi wamandla unesibopho sokwethula i-harmonic current yesofthiwe yesistimu.
Ngokusho kokuhlangenwe nakho kobunjiniyela bezigayo zendabuko zenkampani yethu ukuze zibhekane nama-harmonics, emsebenzini, ohlelweni lokusabalalisa amandla kagesi aphansi komsebenzisi, okuqukethwe kwamanje kwe-harmonic yesi-5 kufinyelela ku-20% ~ 25%, okwamanje i-harmonic yesi-7 ifinyelela ku-8%, futhi i-harmonic current ijovwa ku-voltage ephezulu Okuqukethwe kwe-harmonic ohlelweni lwamandla kukhuphuka ngokushesha, okubangela ukuphazamiseka kwe-waveform ye-voltage yokuhlinzeka, kukhulisa ukulahleka kwezintambo kanye nemishini yamandla, kuletha ukusetshenziswa kwamandla okwengeziwe, kuthinta ukusebenza okuvamile kwamanye. okokusebenza kwamandla kugridi yamandla, futhi yehlisa ikhwalithi yamandla wegridi yamandla., okuthinta ukuphepha kwamandla wegridi yamandla futhi ilethe izingozi zokuphepha ekusebenzeni okuphephile kwezinto zokusebenza.
Ukuze kuqinisekiswe ukusebenza okujwayelekile kwemishini, ukunikezwa kwamandla okuthembekile nokongiwa kwamandla ohlelo lokuphakelwa kukagesi, kuyadingeka ukuthatha izinyathelo zobuchwepheshe zokucindezela amandla e-harmonic wemishini futhi ucabangele isinxephezelo samandla asebenzayo ayisisekelo.Ngokwezinga lekhwalithi yemikhiqizo kagesi osebenzayo kugridi yamandla yezwe lami kanye nemiphumela yocwaningo lwesayensi yokulawula ukushaya kwenhliziyo kwamanje emazweni ahlukahlukene emhlabeni, imininingwane yobuchwepheshe yokuhlunga ugesi ophansi kanye nesinxephezelo esiguqukayo iyamukelwa, futhi izihibe zokulawula izihlungi ziyalandelana. isethelwe izici ze-pulse currents ezibangelwa isilungisi ukuthi sigaye futhi simunce ama-harmonic currents.Ngaphezu kwalokho, inemisebenzi yokunxephezela umthwalo we-wave reactive reactive kanye nokugcina amandla kazibuthe kagesi.
Imishini elwa ne-harmonic ekhiqizwa yi-Zhejiang Hongyan Electric Co., Ltd. inezici zoshintsho oluguquguqukayo ngomthwalo.Nakuba ithuthukisa ngempumelelo ikhwalithi yamandla, isici samandla nokonga amandla egridi yamandla, ingase futhi ithuthukise ukwethembeka komsebenzi wonke wesistimu yamandla nokusebenza kahle kwemishini, futhi yehlise izindleko zokusebenza futhi Yehlise izindleko zokunakekela imishini, yelule imishini. impilo, futhi ilethe izinzuzo zezomnotho ezisobala kubasebenzisi.
Izigayo ezigoqayo ze-DC ngokuvamile zisebenzisa amamotho e-DC, futhi isici samandla ngesikhathi sokugoqa siphansi kakhulu, ngokuvamile sizungeze u-0.7.Esinye sezici zayo ezinkulu umjikelezo wokusebenza omfushane, isivinini esisheshayo, umthwalo womthelela, nokuguquguquka okukhulu okungavumelekile.Izigxivizo zamandla zingabangela nokuguquguquka okunamandla kugesi wegridi, kubangele izibani nezikrini ze-TV ukuba zilokoze, kubangele ukukhathala nokucasuka.Ngaphezu kwalokho, zizophinde zithinte ukusebenza kahle kwezingxenye ze-thyristor, izinsimbi noma imishini yokukhiqiza, futhi zibangele ngisho nezingozi zokuphepha.Isinxephezelo sebhange le-capacitor esijwayelekile asikwazi ukulandelela izinguquko zomthwalo ngesikhathi sangempela ukuze kugcinwe isinxephezelo esifanele.Amaphuzu okuxhumana emishini kagesi ayathinteka ngenxa yokushintsha njalo, okunomthelela omkhulu kugridi yamandla.
I-DC rolling Mill yamukela ukudluliswa kukagesi kobuchwepheshe bokulungisa i-thyristor.Ngokwenani lamapulse okulungisa, lingahlukaniswa libe yi-6-pulse rectification, 12-pulse kuya ku-24-pulse.Ngokungeziwe kusici samandla aphansi, ama-harmonics aphezulu azokhiqizwa ngesikhathi somsebenzi.Ngokuvamile, izigayo zasekhaya eziginqikayo ze-DC Kusetshenziswa ubuchwepheshe bokulungisa i-6-pulse, ngakho-ke ama-harmonics ahleleke kakhulu akhiqizwe uhlangothi olulodwa olunama-voltage aphansi lwe-rectifier transformer ikakhulukazi ayi-11 kanye ne-13 ohlangothini lwe-low-voltage ye-transformer ene-2. ama-windings do and yn joint method, i-5th and 7th High-order harmonics ingasuswa ohlangothini lwe-voltage ephezulu, ngakho-ke izingxenye ze-harmonic ze-11 kanye ne-13 ze-oda eliphezulu ziboniswa ngokuyinhloko ohlangothini lwe-voltage ephezulu.Imithelela eyinhloko yama-high-order pulse currents kugridi yamandla ihlanganisa ukushisisa nokudlidliza kwezinto zikagesi, ukulahlekelwa okukhulayo, ukuphila kwesevisi okufinyeziwe, umthelela wokuxhumana, iphutha lokusebenza kwe-thyristor, iphutha lokusebenza kwamanye amadivaysi okuvikela ukudluliselwa, ukuguga nokulimala kongqimba lukagesi lokuvala ugesi. , njll.
Izixazululo ongakhetha kuzo:
Isixazululo 1 Ukuphatha okumaphakathi (okusebenza kubasingathi abanamandla aphansi, amavolumu kwesokunxele nakwesokudla)
1. Yamukela igatsha lokulawula i-harmonic (izihlungi ezi-3, 5, 7) + igatsha lokulawula amandla asebenzayo.Ngemuva kokuthi idivayisi yesinxephezelo sesihlungi isiqalile ukusebenza, isilawuli se-harmonic nesinxephezelo samandla asebenzayo wesistimu yokuphakelwa kwamandla kuhlangabezana nezimfuneko.
2. Sebenzisa isifunda se-bypass esicindezela isinxephezelo esingasebenzi sama-harmonics, futhi ngemva kokuxhuma idivayisi yesinxephezelo sesihlungi, yenza isici samandla sihlangabezane nezidingo.
Inketho yesi-2 Ukwelashwa kwendawo (isebenza ekwelapheni okuseceleni kwe-12-pulse rectifier low-voltage low kanye nenjini enamandla amakhulu kanye nomshini wokujika ofakwe ngokuhlukile)
1. Yamukela i-anti-harmonic bypass (5th, 7th, 11th order filter), ukulandelela okuzenzakalelayo lapho isigayo sisebenza, xazulula ama-harmonics esizeni, akuthinti ukusebenza kwezinye izinto ngesikhathi sokukhiqiza, futhi ama-harmonics awafinyeleli ezingeni elijwayelekile. ngemva kokuqaliswa ukusebenza.
2. Ukusebenzisa isihlungi esisebenzayo (ukuhlunga ama-harmonics ashukumisayo) kanye nokudlula isihlungi (ukuhlunga kwe-oda yesi-5, yesi-7, yesi-11), ama-harmonics ngemva kokuvula awekho ezingeni.
Isikhathi sokuthumela: Apr-13-2023