Iyo main transformer ye rolling mill power distribution system is rectifier transformer ine voltage ye 0.4/0.66/0.75 kV, uye mutoro mukuru iDC hombe mota.Nekuti kufambisa kwemagetsi uye kugovera kwemushandisi extruder rectifier mudziyo kazhinji inoshandisa marudzi maviri e matanhatu-pulse rectifier tekinoroji, iyo inogadzira imwe huwandu hwepulse current (6N+1) mumadhigirii akasiyana padivi re low-voltage, uye kunyanya (6N +1) padivi repamusoro-voltage.12N+1) Ratidza gumi nembiri single-pulse rectifier modhi.
Kukuvadzwa kwemagetsi einjiniya maharmonics kune gidhi remagetsi kunoenderana nekukuvadza kweiyo harmonic inoshanda voltage kumakina nemidziyo iri mugidhi remagetsi, kureva kuti, iyo harmonic inoshanda voltage inodarika mwero ungatakurwa nemichina nemidziyo.Bato rekupa magetsi rinoita basa rekufambisa kwemagetsi emagetsi emagetsi emagetsi, uye mutengi wemagetsi ane basa rekuunza harmonic ikozvino yesoftware system.
Zvinoenderana neruzivo rweinjiniya yekambani yedu yechinyakare inotenderedza zvigayo kubata neharmonics, mubasa, mune yakaderera-voltage simba rekugovera sisitimu, iyo yechishanu yeharmonic yezvino zvirimo inosvika 20% ~ 25%, yechinomwe harmonic ikozvino inosvika 8%, uye harmonic yazvino inobaiwa mumhepo yakakwira Iyo harmonic yemukati musimba remagetsi inowedzera nekukurumidza, izvo zvinokonzeresa kukanganiswa kweiyo waveform yemagetsi ekugovera, inowedzera kurasikirwa kwewaya nemidziyo yemagetsi, inounza mamwe mashandisirwo emagetsi, inokanganisa kushanda kwakajairwa kweimwe. midziyo yemagetsi mugidhi remagetsi, uye inoderedza kunaka kwesimba regetsi remagetsi., iyo inobata kuchengetedzwa kwemagetsi emagetsi emagetsi uye inounza njodzi dzekuchengetedza kune kushandiswa kwakachengeteka kwemidziyo.
Kuti uve nechokwadi chekushanda kwakajairwa kwemidziyo, yakavimbika magetsi uye kuchengetedza kwesimba remagetsi system, zvinodikanwa kutora matanho ehunyanzvi kudzvanyirira harmonic ikozvino yemidziyo uye kufunga kubhadharwa kweiyo yakakosha reactive simba.Zvinoenderana nemhando yemhando yekushanda kwemagetsi zvigadzirwa mugedhi remagetsi yenyika yangu uye netsvakiridzo yetsvakiridzo yepulse ikozvino kutonga munyika dzakasiyana siyana pasirese, iyo tekinoroji yekumisikidza yepasi voltage kusefa uye muripo une simba inotambirwa, uye mafirita ekudzora zvishwe anoteerana. set for the characteristic pulse currents inokonzerwa neanogadzirisa kugaya uye kutora ma harmonic currents.Uye zvakare, ine mabasa ekubhadharisa iyo yakakosha wave reactive mutoro uye kuchengetedza magetsi emagetsi.
Iyo anti-harmonic midziyo inogadzirwa neZhejiang Hongyan Electric Co., Ltd. ine hunhu hwekuchinja kune simba nemutoro.Kunyange zvichinyatso kuvandudza kunaka kwesimba, simba chinhu uye kuchengetedza simba regidhi remagetsi, inogona zvakare kuvandudza kuvimbika kwese kushanda kwesimba remagetsi uye kushanda zvakanaka kwemidziyo, uye kuderedza mutengo wekushandisa uye Kuderedza mutengo wekugadzirisa michina, kuwedzera nguva yemidziyo. hupenyu, uye kuunza hupfumi huri pachena kune vashandisi.
DC inotenderedza zvigayo kazhinji inoshandisa DC mota, uye iyo simba chinhu panguva yekukunguruka yakaderera zvakanyanya, kazhinji kutenderera 0.7.Imwe yeayo makuru maficha ipfupi yekushanda kutenderera, kukurumidza kukurumidza, kukanganisa mutoro, uye hombe isingaite shanduko.Magetsi emagetsi anogonawo kukonzera kuchinjika kwakasimba mumagetsi egridi, zvichikonzera mwenje uye zviratidziro zveTV kupenya, zvichikonzera kuneta kwekuona uye kushatirwa.Uye zvakare, ivo vanozokanganisa kushanda kwakatsetseka kwe thyristor zvikamu, zviridzwa kana zvigadzirwa zvekugadzira, uye kunyange kukonzera tsaona dzekuchengetedza.General capacitor bhangi muripo haugone kuteedzera shanduko yemutoro munguva chaiyo kuchengetedza muripo unonzwisisika.Mechanical michina yekuonana mapoinzi inokanganisika nekuda kwekugara uchichinja, iyo ine simba guru pane yemagetsi grid.
Iyo DC inotenderedza chigayo inotora yemagetsi kufambisa kwe thyristor rectification tekinoroji.Zvinoenderana nehuwandu hwekugadzirisa pulses, inogona kukamurwa kuita 6-pulse rectification, 12-pulse kusvika 24-pulse.Kuwedzera kune yakaderera simba chinhu, yakakwirira-yakarongeka harmonics ichagadzirwa panguva yebasa.Kazhinji, epamba DC inotenderedza zvigayo Iyo 6-pulse rectification tekinoroji inoshandiswa, saka iyo yakakwira-yakarongeka maharmonics anogadzirwa neakaderera-voltage anomonereka divi reinogadzirisa transformer anonyanya 11 uye 13 ari yakaderera-voltage kudivi re transformer ine 2. windings do and yn joint method, the 5th and 7th High-order harmonics inogona kugadziriswa padivi repamusoro-voltage, saka 11th uye 13th high-order harmonic zvikamu zvinonyanya kuratidzwa padivi re-voltage.Mhedzisiro huru yeakakwira-yakarongeka pulse currents pagidhi remagetsi anosanganisira kudziyisa uye kuzunguzika kwemidziyo yemagetsi, kurasikirwa kwakawedzera, kupfupikiswa kwehupenyu hwesevhisi, kutaurirana kukanganisa, thyristor oparesheni kukanganisa, kukanganisa kwekushanda kwezvimwe zvidziviriro zvekudzivirira, kuchembera uye kukuvara kwemagetsi ekudzivirira. , nezvimwewo.
Mhinduro dzekusarudza kubva:
Solution 1 Centralized management (inoshanda kune yakaderera-simba mauto, kuruboshwe uye kurudyi mavhoriyamu)
1. Adopt harmonic control bazi (3, 5, 7 filters) + reactive simba regulation bazi.Mushure mesefa yekubhadhara mudziyo waiswa mukushanda, iyo harmonic control uye reactive simba muripo weiyo magetsi system inosangana nezvinodiwa.
2. Shandisa bypass circuit inodzvanyirira kusashanda muripo weharmonics, uye mushure mekubatanidza sefa yekubhadhara mudziyo, ita kuti simba remagetsi rizadzise zvinodiwa.
Sarudzo 2 Kurapwa kwepanzvimbo (inoshanda kune gumi nemaviri-pulse rectifier transformer yakaderera-voltage padivi kurapwa uye yakakwirira-simba guru injini uye muchina wekupetera wakaiswa zvakasiyana)
1. Adopt anti-harmonic bypass (5th, 7th, 11th order sefa), otomatiki tracking kana chigayo chiri kushanda, gadzirisa harmonics panzvimbo, usakanganisa kushanda kwemimwe michina panguva yekugadzira, uye harmonics haisviki pachiyero. mushure mekuiswa mukushanda.
2. Kushandisa sefa inoshanda (kusefa dynamic harmonics) uye firita bypass (5th, 7th, 11th kurongeka kusefa), harmonics mushure mekushandura haisi kusvika pachiyero.
Nguva yekutumira: Kubvumbi-13-2023