Iyo yepakati frequency choto inoburitsa huwandu hukuru hweharmonics panguva yekushandiswa.Iwo maharmonics haangokonzeresa yemuno parallel resonance uye nhevedzano resonance yesimba, asi zvakare inokudza zviri mukati meiyo harmonics uye nekupisa iyo capacitor muripo wemidziyo nemimwe michina.Uye zvakare, iyo pulse yazvino inokonzeresa kukanganisa mumidziyo yekudzivirira yekudzivirira uye otomatiki zvishandiso, izvo zvinogona kutungamira mukukanganisika mukuyera uye kuoneswa kwesimba remagetsi.
Power grid harmonic kusvibiswa kwakakomba zvikuru.Kune kunze kwesimba remagetsi, harmonics inokonzeresa kukanganisa kwakakomba kumidziyo yekutaurirana nemidziyo yemagetsi, uye maharmonics anonyanya kukuvadza kune yepakati frequency choto michina.Naizvozvo, kuvandudza simba remagetsi epakati frequency choto chave chikamu chakakosha chemhinduro.
Iyo yepakati frequency furenace ndeye yakajairika discrete magetsi einjiniya mutoro, iyo inoburitsa huwandu hukuru hwemaharmonics epamberi panguva yekushanda, inozivikanwawo seyepakati frequency furnace harmonics.Huremu hwayo huremu hunonyanya 5, 7, 11 uye 13 nguva.Kuvepo kwenhamba huru yemhando yepamusoro-soro ichaisa pangozi kuchengetedzwa uye kushanda zvakanaka kweinjiniya yemagetsi uye capacitance muripo wemidziyo yenzira imwe chete yebhazi.Iyo nhanhatu-phase transformer inogona kumisa yechishanu neyechinomwe harmonics inogadzirwa nepakati frequency furenace, asi kana pasina anopindirana ekudzvinyirira matanho akatorwa, iyo system inosimudzira iyo harmonics, inokanganisa kushanda kwakagadzikana kwetransformer, uye kunyange kuita kuti transformer iwedzere kupisa. uye kukanganisa.
Naizvozvo, pakubhadharira maharmonics echoto chepakati-frequency induction, kutariswa kunofanirwa kubhadharwa pakubviswa kwemaharmonics, kudzivirira michina yekuripa kubva mukukudza yakakwira-order harmonics.Kana iyo yepakati frequency kuremedza huwandu hwakakura, zviri nyore kukonzeresa tsaona dzekugumburwa pakakwirira voltage kumagumo kweiyo substation uye harmonic kupindira kwemabhizinesi ari munzira.Sezvo mutoro uchichinja, avhareji yesimba chinhu chechoto chakajairika hachikwanise kusangana neyakajairwa kambani yedu, uye inobhadhariswa mwedzi wega wega.
Nzwisisa njodzi dzemafuremu akakwira-frequency mukushandiswa kweharmonic control, maitiro ekuve nechokwadi chekushanda kwakajairwa uye hupenyu hwesevhisi hwemidziyo, nekuvandudza kushanda zvakanaka.
Chekutanga, tsananguro pfupi yekuchengetedzwa kwezvakatipoteredza uye kuchengetedza simba kweparallel uye akatevedzana epakati frequency induction choto chemagetsi ekupa maseketi:
1. Kuenzaniswa nemakwikwi kana parallel circuit, ikozvino yekutakura mutoro inoderedzwa kubva ku10 kusvika ku12 nguva.Inogona kuchengetedza 3% yekushandisa simba rekushandisa.
2. Iyo yakatevedzana yedunhu haidi yakakura-inokwana sefa reactor, iyo inogona kuchengetedza 1% yesimba rekushandisa.
3. Imwe neimwe induction melting furnace inozvimiririra inofambiswa neboka reinverters, uye hapana chikonzero chekuisa chepamusoro-ikozvino choto switch yekuchinja, nokudaro kuchengetedza 1% yesimba rekushandisa.
4. Kune akateedzana inverter magetsi ekupa, hapana simba concave chikamu mukushanda simba hunhu curve, ndiko kuti, chikamu chekurasikirwa kwesimba, saka nguva yekunyunguduka yakadzikiswa zvakanyanya, kubuda kunovandudzwa, simba rinochengetwa, uye kuchengetedzwa kwezvakatipoteredza uye kuchengetedza simba i7%.
Chechipiri, chizvarwa uye kukuvadza kwepakati frequency choto harmonics:
1. Parallel intermediate frequency electric furnace power supply system ndiyo hombe harmonic sosi musimba remagetsi.Kazhinji kutaura, iyo 6-pulse yepakati frequency yemagetsi vira inonyanya kuburitsa 6 uye 7 hunhu harmonics, nepo 12-pulse inverter inonyanya kuburitsa 5, 11 uye 13 hunhu harmonics.Kazhinji, 6 pulses inoshandiswa kune zviduku zvinoshandura zvikamu uye 12 pulses inoshandiswa kune makuru ekushandura zvikamu.Rutivi rwepamusoro-voltage rwemavhiri maviri echoto rinotora matanho ekuchinja-chinja senge yakawedzera delta kana zigzag yekubatanidza, uye inoshandisa yechipiri mativi maviri-mativi nyeredzi-angle yekubatanidza kugadzira 24-pulse yepakati frequency magetsi ekupa kuderedza kukanganiswa kweharmonics pa. iyo grid yemagetsi.
2. Iyo yepakati frequency induction furnace ichagadzira yakawanda yeharmonics panguva yekushandiswa, izvo zvinokonzeresa zvakanyanya kusvibiswa kweharmonic kune grid yemagetsi.Harmonics inoderedza kutapurirana uye kushandiswa kwesimba remagetsi, kuita kuti midziyo yemagetsi iwedzere, inokonzeresa kuzununguka uye ruzha, inobvisa iyo insulation layer, kupfupisa hupenyu hwesevhisi, uye kunyange kukonzera kutadza kana kupisa.Harmonics inokonzeresa yemuno akateedzana resonance kana parallel resonance mumagetsi ekupa system, izvo zvinowedzera harmonic zvemukati uye kukonzera capacitor muripo wemidziyo uye zvimwe zvishandiso kupisa.
Kana reactive simba rekubhadhara risingagoni kushandiswa, reactive simba chirango chichaitika, zvichikonzera kuwedzera kwemagetsi mabhiri.Pulse yazvino inogona kukonzera kukanganisa mumidziyo yekudzivirira yekudzivirira uye otomatiki zvishandiso, izvo zvinogona kutungamira mukukanganisika mukuyera uye kusimbiswa kwesimba remagetsi.Kune kunze kweiyo magetsi emagetsi system, iyo pulse yazvino ichave nechakaipa pamidziyo yekutaurirana uye zvigadzirwa zvemagetsi, saka kuvandudza kunaka kwesimba repakati frequency induction choto chave chinhu chinonyanya kukosha.
Nguva yekutumira: Kubvumbi-12-2023