I-transformer ephambili yenkqubo yokuhambisa amandla okusila yi-rectifier ye-rectifier ene-voltage ye-0.4 / 0.66 / 0.75 kV, kwaye umthwalo oyintloko yinjini ye-DC engundoqo.Ngenxa yokuba ugqithiso lwamandla kunye nokuhanjiswa kwesixhobo somsebenzisi se-extruder rectifier ngokubanzi sisebenzisa iindidi ezimbini zetekhnoloji yokuhlaziya ipulse ezintandathu, eyenza umlinganiselo othile wepulse yangoku (6N+1) kwidigri ezahlukeneyo kwicala le-low-voltage, kwaye ikakhulu (6N +1) kwicala le-voltage ephezulu.12N+1) Bonisa imowudi yokuhlaziya ipulse enye eneshumi elinesibini.
Umonakalo wobunjineli bamandla eharmonics kwigridi yamandla ixhomekeke kumonakalo wombane osebenzayo kumatshini kunye nezixhobo ezikwigridi yamandla, oko kukuthi, umbane osebenzayo we-harmonic udlula inqanaba oomatshini kunye nezixhobo ezinokuthwala.Iqela lonikezelo lombane linoxanduva lokubetha amandla ombane osebenzayo ngoku wothungelwano lonikezelo lwamandla, kwaye umsebenzisi wamandla unoxanduva lokwazisa i-harmonic yangoku yesoftware yenkqubo.
Ngokutsho kwamava obunjineli benkampani yethu yemveli yokuguqa ukujongana ne-harmonics, emsebenzini, kwinkqubo yokusabalalisa amandla ombane aphantsi komsebenzisi, umxholo we-5 we-harmonic wangoku ufikelela kwi-20% ~ 25%, i-7 ye-harmonic yangoku ifikelela kwi-8%, kwaye i-harmonic current ifakwe kwi-voltage ephezulu Umxholo we-harmonic kwinkqubo yamandla ukhula ngokukhawuleza, obangela ukuphazamiseka kwe-waveform ye-voltage yokubonelela, kwandisa ilahleko ye-wiring kunye nezixhobo zamandla, kuzisa ukusetyenziswa kwamandla okongeziweyo, kuchaphazela ukusebenza okuqhelekileyo kwamanye. izixhobo zamandla kwigridi yamandla, kwaye inciphisa umgangatho wamandla wegridi yamandla., echaphazela ukhuseleko lwamandla egridi yamandla kwaye izisa imingcipheko yokhuseleko ekusebenzeni ngokukhuselekileyo kwezixhobo.
Ukuze kuqinisekiswe ukusebenza okuqhelekileyo kwezixhobo, unikezelo lwamandla oluthembekileyo kunye nokugcinwa kwamandla kwenkqubo yokubonelela ngombane, kuyimfuneko ukuthatha amanyathelo obugcisa ukucinezela i-harmonic yangoku yesixhobo kunye nokuqwalasela imbuyekezo yamandla asebenzayo asisiseko.Ngokwemigangatho yomgangatho weemveliso zamandla ombane osebenzayo kwigridi yamandla yelizwe lam kunye neziphumo zophando lwezenzululwazi zolawulo lwe-pulse lwangoku kumazwe ahlukeneyo ehlabathi, ubuchwephesha bokuhluza amandla ombane osezantsi kunye nembuyekezo eguquguqukayo zamkelwa, kunye ne-loops yokulawula isihluzi ngokulandelelanayo. isetyenziselwe uphawu lwemisinga ye-pulse ebangelwa ngumhlaziyi ukuba agaye kwaye afunxe imisinga ye-harmonic.Ukongeza, inemisebenzi yokubuyekeza umthwalo osisiseko wamaza kunye nokugcina amandla ombane.
Izixhobo ezichasene ne-harmonic eziveliswa nguZhejiang Hongyan Electric Co., Ltd. zineempawu zokutshintsha okuguquguqukayo kunye nomthwalo.Ngelixa ngempumelelo iphucula umgangatho wamandla, amandla ombane kunye nokugcinwa kwamandla egridi yamandla, inokuphucula ukuthembeka komsebenzi wonke wenkqubo yamandla kunye nokusebenza kakuhle kwezixhobo, kunye nokunciphisa iindleko zokusebenza kunye nokunciphisa iindleko zokugcina izixhobo, ukwandisa izixhobo zokusebenza. ubomi, kwaye izise inzuzo ecacileyo yezoqoqosho kubasebenzisi.
Izixhobo zokusila zeDC zihlala zisebenzisa iinjini zeDC, kwaye amandla amandla ngexesha lokuqengqeleka aphantsi kakhulu, ngokubanzi malunga ne-0.7.Enye yeempawu zayo eziphambili ngumjikelo omfutshane wokusebenza, isantya esikhawulezayo, umthwalo wempembelelo, kunye noguquko olukhulu olungasebenziyo.Izicudi zamandla zisenokubangela ukuguquguquka okumandla kumbane wegridi, okubangela ukuba izibane kunye nezikrini zeTV zilayize, zibangele ukudinwa okubonakalayo kunye nokucaphuka.Ukongeza, ziya kuchaphazela nokusebenza kakuhle kwamacandelo e-thyristor, izixhobo okanye izixhobo zokuvelisa, kwaye zibangele iingozi zokhuseleko.Imbuyekezo yebhanki ye-capacitor ngokubanzi ayikwazi ukulandelela utshintsho lomthwalo ngexesha langempela ukugcina imbuyekezo efanelekileyo.Amanqaku oqhagamshelwano lwezixhobo zoomatshini achaphazelekayo ngenxa yokutshintsha rhoqo, okunempembelelo enkulu kwigridi yamandla.
I-DC rolling Mill ithatha ukuhanjiswa kombane kweteknoloji yokulungiswa kwe-thyristor.Ngokwenani le-pulses yokulungiswa, inokwahlulwa ibe yi-6-pulse rectification, i-12-pulse ukuya kwi-24-pulse.Ukongeza kumandla aphantsi, i-harmonics ephezulu iya kuveliswa ngexesha lomsebenzi.Ngokubanzi, ii-DC zasekhaya eziqengqelekayo zokusila Itekhnoloji yokulungiswa kwe-6-pulse iyasetyenziswa, ngoko ke ii-harmonics ezikwi-high-order eziveliswa licala elinye le-low-voltage elijikajikayo le-rectifier ye-rectifier ikakhulu yi-11 kunye ne-13 kwicala le-low-voltage ye-transformer ene-2. i-windings yenza kunye ne-yn joint method, i-5 kunye ne-7 ye-Harmonics ye-High-order harmonics inokulungiswa kwicala le-voltage ephezulu, ngoko ke i-11th kunye ne-13 ye-high-order ye-harmonic amacandelo abonakaliswe ngokukodwa kwicala lombane ophezulu.Iimpembelelo eziphambili ze-high-order pulse currents kwigridi yamandla ziquka ukufudumeza kunye nokungcangcazela kwezixhobo zombane, ilahleko eyongeziweyo, ubomi benkonzo obufutshane, impembelelo yonxibelelwano, impazamo yokusebenza kwe-thyristor, impazamo yokusebenza kwezinye izixhobo zokukhusela i-relay, ukuguga kunye nokonakala kombane wokufakelwa kombane. , njl.
Izisombululo onokukhetha kuzo:
Isisombululo 1 Ulawulo oluphakathi (olusebenzayo kwiinginginya zamandla aphantsi, umthamo wasekhohlo nasekunene)
1. Yamkela isebe lolawulo lwe-harmonic (3, 5, 7 izihlungi) + isebe lolawulo lwamandla asebenzayo.Emva kokuba isixhobo sembuyekezo yesihluzi sifakwe ekusebenzeni, ulawulo lweharmonic kunye nembuyekezo yamandla asebenzayo wenkqubo yonikezelo lwamandla ihlangabezana neemfuno.
2. Sebenzisa i-bypass circuit ecinezela imbuyekezo engasebenziyo ye-harmonics, kwaye emva kokudibanisa isixhobo sembuyekezo yesihluzi, yenza ukuba amandla ahlangabezane neemfuno.
Ukhetho lwesi-2 Unyango lwasekhaya (lusebenza kwi-12-pulse rectifier yonyango lwecala elinevoltage ephantsi kunye ne-injini ephezulu yamandla kunye nomatshini wokujija ofakwe ngokwahlukeneyo)
1. I-Adopt anti-harmonic bypass (5th, 7th, 11th order filter), ukulandelela ngokuzenzekelayo xa i-rolling mill isebenza, isombulule i-harmonics kwisayithi, ayichaphazeli ukusebenza kwezinye izixhobo ngexesha lokuvelisa, kwaye i-harmonics ayifikeleli kumgangatho. emva kokufakwa ekusebenzeni.
2. Ukusebenzisa isihluzo esisebenzayo (ukucoca i-harmonics eguquguqukayo) kunye ne-filter bypass (5th, 7th, 11th order filtering), i-harmonics emva kokutshintshwa ayikho kumgangatho.
Ixesha lokuposa: Apr-13-2023