Ujantshi

Isistimu yokunikezela kwamandla okuthutha kaloliwe isebenzisa amayunithi okulungisa ukuze inikeze amandla e-DC kuma-EMU, ngakho okuvumelanayo akunakugwenywa.Uma okuqukethwe kwe-harmonic kudlula ububanzi obuthile, kungase kubangele ukulimala kusistimu yamandla asemadolobheni.Ngaphezu kwalokho, ukukhanyisa, i-UPS, amakheshi ikakhulukazi akhiqiza i-3, 5, 7, 11, 13 namanye ama-harmonics.Futhi amandla okulayisha makhulu, namandla asebenzayo makhulu nawo.

I-Harmonics ibangela ukuvikelwa kokudluliselwa kanye namadivayisi azenzakalelayo wesistimu yamandla ukuthi angasebenzi kahle noma anqabe ukusebenza, okufaka engozini ngokuqondile ukusebenza okuphephile kwegridi yamandla;kubangela imishini ehlukahlukene kagesi ukuthi ikhiqize ukulahlekelwa okwengeziwe nokushisa, futhi ibangele injini ukuthi ikhiqize ukudlidliza komshini nomsindo.I-harmonic current ikugridi yamandla.njengohlobo lwamandla, ekugcineni luzosetshenziswa emigqeni nasezinsizeni ezihlukahlukene zikagesi, ngaleyo ndlela kwandiswe ukulahlekelwa, amandla asabela ngokweqile nama-harmonics, okuholela ekwenyukeni kokulahlekelwa kwe-transformer kanye nokusebenza kahle okuncishisiwe, futhi kuzohlanganiswa nohlangothi lwamandla kagesi aphezulu, okubangela ukwanda Okukhulu. -izinkinga zekhwalithi yamandla esikalini.

Imishini yokukhanyisa, i-UPS, amafeni, namakheshi akhiqiza ama-harmonic currents, okubangela ukuphazamiseka kwamandla kagesi.Ngesikhathi esifanayo, ama-harmonic currents azohlanganiswa nohlangothi lwe-voltage ephezulu ngokusebenzisa i-transformer.Ngemuva kokuthi isihlungi esisebenzayo(i-HYAPF) sesifakiwe, isihlungi sizokhiqiza amandla amanje anxephezelayo ane-amplitude efanayo kodwa ama-engeli esigaba aphambene kuma-harmonics atholiwe.Igridi yamandla ilungiswa ngama-harmonics wokulayisha ukuze kuzuzwe injongo yokuhlunga nokuhlanza igridi yamandla, enganciphisa ngempumelelo izinga lokuhluleka kwezisetshenziswa.Izihlungi zamandla asebenzayo zinokusebenza okungcono kunezihlungi zokwenziwa ezivamile, zinganxephezela ngokushintshashintshayo kuma-harmonics, futhi azijwayele ukuzwakala.