I-Harmonics ithinta i-IT, izinhlelo zokuxhumana/zamabhange ngezindlela ezimbili: ukuqhuba kanye nemisebe.Isimo sokudlulisa sisho i-harmonic yamanje eyethulwe kunethiwekhi yesistimu yokuphakelwa kwamandla ngemithombo yamanje ye-pulse efana neziguquli.Isimo somthombo wemisebe siwukuthi ama-harmonic currents angeniswa ohlelweni lokuxhumana.Njengoba kushiwo ngenhla esimisweni, “Inhloso yokucaciswa ukukhawulela amandla kagesi e-harmonic wangempela ohlelweni lokuphakela amandla abe sezingeni (izinga eliguquguqukayo) elingeke libangele imiphumela eyingozi kumpahla ebucayi.Imiphumela evamile yabantu ye-harmonic ikakhulukazi i-harmonics Ithonya le-wave yamanje kanye nesici sokuphazamiseka kwe-voltage yokusebenza ye-harmonic ebangelwa isofthiwe yesistimu yokudlulisela.
Ukulimala kwe-harmonics yobunjiniyela bamandla kugridi yamandla kuncike ekulimaleni kwamandla kagesi e-harmonic emishinini nasezisetshenziswa kugridi yamandla, okungukuthi, i-voltage yokusebenza ye-harmonic idlula izinga imishini nemishini engalithwala.Iqembu eliphakela amandla libophezelekile ku-voltage esebenzayo yamanje yenethiwekhi yokuphakela amandla, futhi umsebenzisi wamandla unesibopho sokwethula i-harmonic current yesofthiwe yesistimu.
Ukuze kuncishiswe ukulimala kwama-harmonics ohlelweni lokuphakelwa kwamandla nokusabalalisa, umqondo oyisisekelo ukuqala ngomthombo we-harmonic, zama ukugwema i-harmonic current ezungeze umthombo we-harmonic, bese wehlisa i-harmonic voltage.Indlela yokugwema umonakalo wamanje we-harmonic ukufaka isihlungi se-AC, esingavimbela ngokunengqondo i-harmonic current, sinciphise ukushintshashintsha kwevoltheji yokusebenza yegridi yamandla, futhi sithuthukise ikhwalithi yokudluliswa kwamandla nokusabalalisa.Ngaphezu kwalokho, ingasebenzisa ngokuguquguqukayo ukusebenza kahle okuphezulu kwemithwalo yamandla, futhi impilo yesevisi yinde.Kwengezwe, isihlungi sihlinzeka ngokulayisha okusebenzayo kwe-capacitive, okunomphumela othile wesinxephezelo samandla asebenzayo, ngaleyo ndlela sithuthukise isici samandla sesistimu.Ngokuya ngokuthi iluphu eyinhloko ihlanganisa yini okokusebenza komthombo, izihlungi zingahlukaniswa zibe izihlungi ezisebenzayo nezihlungi ze-passive.
Ngomkhuba wokuthuthukiswa kobuchwepheshe bolwazi, ibhizinisi lezokuxhumana/lesikweletu, ukuze kuhlangatshezwane nezidingo zokusebenza zegumbi lekhompiyutha elikhulu lezikhungo zedatha ezinkulu nezinosayizi ophakathi, umthamo wokusetshenziswa wemithwalo ehambisanayo efana nokukhuphuka kwamandla kagesi kumishini yokusabalalisa amandla. isofthiwe yohlelo lobuchwepheshe bolwazi, izikhungo zokuxhumana/ezezimali zikhuliswe kakhulu.Imithombo eyinhloko ye-harmonic yesistimu yokusabalalisa amandla aphansi we-voltage yobuchwepheshe bolwazi, izikhungo zokuxhumana/zezimali zihlanganisa ukunikezwa kwamandla kwe-UPS, i-transformer yamandla, i-frequency conversion air conditioner, njll. Okuqukethwe kwamanje kwe-harmonic okukhiqizwa imishini yabakhiqizi abahlukahlukene kuyahluka kakhulu, kodwa ngokuvamile iphakeme.Lapho inani eliphelele lokuhlanekezela kwe-harmonic i-THDi yamanje idlula i-50% (ngokuvamile ngaphezu kwe-30%), i-harmonics yesi-5, yesi-7, ne-11 I-curonic inzima, ngezinye izikhathi iqukethe ama-harmonics angaphezu kuka-3.
Inani Lomsebenzisi Lokubusa Okuvumelanayo
Ukuthuthukisa ukwethembeka kwezinhlelo zokuxhumana kwamakhasimende kanye nesofthiwe yesistimu yemishini yokusabalalisa amandla, ukwandisa impilo yesevisi yemishini yokuxhumana yamakhasimende kanye nobunjiniyela bamandla;ngcono izinga lokudluliswa kwamasignali edatha yezokuxhumana, uqinisekise konke ukudluliswa okuvamile kwezimpawu zedatha yezokuxhumana kanye nezinkomba zokusebenza kwemishini yezokuxhumana;ukuqeda ubungozi bokuphepha obuhlukahlukene njengokushisisa ngokweqile kwezinto zikagesi, ukushisisa ngokweqile kwezintambo zikagesi, ukuncishiswa kwamandla okuthwala amandla amanje, nokulahleka kohlaka lwamagagasi kagesi okubangelwa amaza okushaya kwempahla kagesi njengamandla kagesi e-UPS;ukwandisa ukusetshenziswa kwamandla kwe-air-conditioning emaphakathi nezinye izinto zokusebenza endlini, futhi kuthuthukiswe uhlelo Isici samandla sesofthiwe sifeza inhloso yokonga amandla kanye nokunciphisa ukukhishwa.
Izinkinga ongase uhlangane nazo?
1. Izinto zamanje zesinxephezelo samandla asebenzayo azikwazi ukusebenza ngendlela evamile noma ngokuvamile ziyasha;
2. Ezinhlelweni zokuxhumana, ama-harmonics aphazamisa izinhlelo zokuxhumana eziseduze.Umsindo omncane, ikhwalithi yokuxhumana iba yimbi kakhulu, ikhompuyutha ngeke isebenze kahle, futhi isisindo esisindayo, ulwazi luzolahleka, okubangela ukuthi uhlelo luphahlazeke.
3. I-relay yokuvikela ayisebenzi noma ayisebenzi kahle, ithuluzi likagesi lokukala alilingani kahle, futhi imikhiqizo ye-elekthronikhi enembile izothinteka kakhulu noma ilimale.
Isixazululo sethu:
1. Sebenzisa okokuhlunga kwe-Hongyan passive isihlungi ukuhlinzeka ngesiteshi esine-impedance ephansi ye-harmonics yemvamisa ethile, futhi ususe ama-harmonics ukuze uzuze imiphumela yezinyathelo zokulwa ne-harmonic kanye nesinxephezelo samandla asebenzayo.
2. Sebenzisa isihlungi esisebenzayo i-Hongyan APF ukuze uphathe ama-harmonics, kanye nedivayisi yesinxephezelo sokuphepha esimile ukuze unxephezele amandla asebenzayo ohlelo, ukuze okuqukethwe kwe-harmonic namandla esistimu kuhlangabezane nezindinganiso zenkampani yethu.
3. Isihlungi esisebenzayo i-Hongyan APF siyamukelwa, iningi lama-capacitor esihlungi esisebenzayo lisusa isihlungi se-harmonic, futhi ingxenye ye-capacitor inxephezela amandla asebenzayo, ithuthukisa isici samandla, futhi iphathe ngempumelelo i-harmonics namandla asebenzayo wesistimu. .
Isikhathi sokuthumela: Apr-13-2023