Nekuda kwezvinodiwa zvekugadzirwa, kune huwandu hukuru hwepombi mitoro muindasitiri yepetrochemical, uye mitoro yakawanda yepombi ine ma frequency converters.Huwandu hukuru hwekushandiswa kwema frequency converters hunowedzera zvakanyanya harmonic yemukati yekugovera sisitimu muindasitiri yepetrochemical.Parizvino, mazhinji eanogadzirisa zvinongedzo eiyo frequency converters iko kushandiswa kwe6 pulse rectifier kushandura AC kuita DC.Saka, maharmonics anogadzirwa anonyanya kuve echishanu, 7th uye 11th harmonics.
1. Kuongororwa kwemaitiro ekutakura muindasitiri yemafuta
Kupfuura 85% yesimba remutoro mugidhi reindasitiri yemafuta inductive mutoro, senge akasiyana mapombi emafuta, mota uye zvichingodaro.Mumakore achangopfuura, sezvo munda weoiri wakaisa mberi zvinodiwa zvekuchengetedza simba, zvikamu zvakawanda zvakatora nhamba huru yemidziyo yekuchengetedza simba.Nekuda kwekuita kwayo kuri pachena kwekuchengetedza simba, kugadzirisa nyore, kugadzirisa nyore uye network, iyo frequency converter yakashandiswa zvakanyanya mukushandiswa kwemafuta.Iyo pombi, pombi, nhanho-pasi pombi uye yekusanganisa pombi muchiteshi chekugadzira oiri inofambiswa neinoshandura frequency, asi frequency inoshandura inoburitsa huwandu hukuru hwemaharmonics kukanganisa mutoro nemidziyo yayo iri padyo, uye maharmonics achaitawo. kukanganisa grid yemagetsi eruzhinji kuburikidza netambo yemagetsi yekupinza.
2. Kukuvadza kweharmonics kune mafuta emunda simba grid
1) Harmonics inokanganisa kushanda kwakagadzikana kwegedhi remagetsi emagetsi uye kuderedza kunaka kwemagetsi egedhi remagetsi emunda.
2) Harmonics inowedzera kurasikirwa kwesimba re capacitor, kupfupisa hupenyu hwebasa resimba capacitor, uye mune yakakomba harmonics, ichaitawo kuti capacitor iwedzere, kuparara kana kuputika.Harmonics inogonawo kuwedzera kurasikirwa kwesimba kweshanduko.
3) Harmonics ichaita kuti kurasikirwa kwemagetsi kwemota inotenderera kuwedzere, kukonzeresa kupisa, kuburitsa mechanical vibration, ruzha uye harmonic overvoltage, iyo inopfupisa hupenyu hwemidziyo, uye kunyangwe kukuvara mumatambudziko akakomba;Harmonics inokonzeresa relay kudzivirira kukanganisa kana kuramba chiito;Iyo harmonics musimba remagetsi inosanganiswa kune isina kusimba yazvino sisitimu ne electromagnetic induction, electrostatic induction uye conduction, izvo zvinozokonzera kukanganisa kune isina kusimba system iripo.
Nekushandiswa kwakakura kwema frequency converter muoiri munda wemvura jekiseni system, haingogadzirise chete matambudziko echinyakare jekiseni remvura kudzvanywa, kushandiswa kwesimba kwakanyanya uye kushomeka kwesimba, asi zvakare kunounza kuwedzera kweharmonic yemukati mumagetsi grid.Kuvapo kwenhamba yakawanda yeharmonics inotyisidzira kuvimbika uye kuchengetedzwa kwesimba rekupa simba.Kuti ubvise kukuvadza kunokonzerwa neharmonics, kushandiswa kwekugadzira, kuvandudza kunaka kwemagetsi emagetsi grid, kuve nechokwadi chekugadzirwa kwakajairwa.
Noker Electric (/ about-us/) inoshanda harmonic sefaine yemazuva ano 3-level IGBT tekinoroji, yakanakira harmonic control chigadzirwa.Chero rubatsiro, taura nesu zvakasununguka.Tichakupa mhinduro yakarongeka.
Nguva yekutumira: Jun-30-2023