I-Harmonic Characters of Power Distribution System Embonini Yezokwelapha

Njengomholi wemboni emkhakheni wokwakha ukongiwa kwamandla kanye ne-automation, i-Hongyan Electric nayo icacile ekuxazululeni izinselele zokonga amandla ezilethwa ukuphathwa kwe-harmonic embonini yezokwelapha.Ngesixazululo esiyingqayizivele “sokuhlanganiswa kwesinxephezelo samandla asebenzayo kanye nokuphathwa kwe-pulse current” semakethe yobunjiniyela neyokwakha, ukuhlanganisa okungenamthungo nokuhlanganiswa kohlelo lokuphatha oluhlakaniphile lobunjiniyela nokwakha kanye nohlelo lokuphathwa kwamandla kuzothuthukisa kakhulu ukusetshenziswa kwamandla esibhedlela kanye nobunjiniyela bamandla. imisebenzi Yenza indlela yokuphatha edidiyelwe “yokuqondisa, ukuphatha kanye nokusebenza”.Phakathi kwazo, isistimu yokusabalalisa amandla ehlakaniphile, njengomnyombo wesixazululo esiphelele, ihlanganisa i-hardware ehlakaniphile, isofthiwe eyenziwe ngokwezifiso kanye nezinsizakalo zezobuchwepheshe, ukwakha ubuchwepheshe obusebenzisa i-hardware ehlakaniphile ukuqoqa ulwazi olunembile lokulinganisa, isebenzisa isofthiwe eyenziwe ngokwezifiso yokuhlaziywa kwezibalo, futhi inikeza ubuchwepheshe Isofthiwe yesistimu yokulawula iluphu evaliwe yamaphrojekthi wesevisi yomjikelezo wokuphila wephrojekthi.Ngokusekelwe kubuchwepheshe bokuxhumana bemishini eyisisekelo kanye nesakhiwo sesistimu enezigaba ezintathu zesixhumi esibonakalayo se-Ethernet, igcina ukuphathwa okuphelele kwezinga lokusetshenziswa kwamandla, ikhwalithi yamandla, impahla yempahla kagesi kanye nokusebenza nokuphathwa kokugcinwa kokugcinwa kwabasebenzisi bemboni yemishini yezokwelapha, futhi ithuthukisa ukusebenza sekukonke. ukusebenza kahle.

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Ngenxa yokwehlukahlukana kwemisebenzi yeziguli ezingalaliswa esibhedlela, kunezici eziningi, njengabasebenzi abaminyene, inani elikhulu lokukhishwa kwezisu, nempilo yezokwelapha yeziguli ayikwazi ukuhlukaniswa ngokuqinile.Imishini yokwakha, imishini yezokwelapha yokwakha, kanye nemishini yezokwelapha yesigceme konke kuminyene.Uhlelo lokuphakelwa kukagesi ezigulini ezingalaliswa esibhedlela lunezinga eliphezulu lomthwalo, futhi indlela yokuphakela nokusabalalisa ugesi ihluke kakhulu kwezinye izakhiwo zezimboni.Kunezinhlobo eziningi zamathuluzi okuhlola amandla, kodwa amakhasimende akanalo ulwazi lwamandla.Ziningi izingozi zokuphepha ekusebenziseni ubunjiniyela bamandla.Izinkinga zokuphakelwa nokusabalalisa ugesi njengamaza avuzayo kanye nokunqamuka kukagesi kungazelelwe kubangela ubungozi obukhulu ezigulini.
Kuhlanganiswe nomklamo wokuphakelwa kukagesi wezohwebo kanye nezinga lomthwalo lomklamo wesistimu yokusabalalisa amandla, ukuhlukaniswa kwezindawo zezokwelapha nezinsiza, kanye nezidingo zesikhathi sokubuyiselwa kokuphakelwa kukagesi okuzenzakalelayo, ngemva kokuxhumana nomnyango wendawo yokuphakelwa kukagesi, iphrojekthi isebenzisa izindlela ezimbili ezingu-10kV. izintambo, izintambo ezishumekiwe, ugesi wezindlela ezimbili kanye nokubekwe eceleni ngesikhathi esisodwa.
Zonke izinhlobo zemishini yezokwelapha enembayo embonini yezokwelapha njenge-CT, imishini ye-X-ray, imishini ye-nuclear magnetic resonance kanye nezinye izisetshenziswa zezokwelapha, inani elikhulu lempahla ye-elevator, ama-air conditioner, amakhompyutha, i-UPS, amasistimu wentambo yephampu eguquguqukayo, njll. akubonisi nje ukwanda kwama-harmonics aphezulu, kodwa futhi nokushintsha kwesici somthwalo.Esikhathini esidlule, izibhedlela zazivame ukusebenzisa amabhange e-capacitor anesinxephezelo somthamo ongaguquki noma amaswishi e-AC contactor.Kodwa-ke, endaweni yamanje ye-pulse, izisetshenziswa zesinxephezelo zendabuko ezinjalo azikwazi ukuhlangabezana nezidingo zesinxephezelo, futhi imishini yesinxephezelo ye-capacitor evamile izokwandisa i-pulse current, ngaleyo ndlela ithinte ukuphepha kwedivayisi yesinxephezelo ngokwayo.

Inani Lomsebenzisi Lesinxephezelo Samandla Asebenzayo Nokulawula Okuvumelanayo
Yehlisa ukulimala kwama-harmonics, vimbela amandla kagesi okusebenza okubangwa ama-harmonics ukuthi angakhuli futhi acekele phansi amaphutha avamile njengamathuluzi anembayo, futhi uthuthukise isici sokuphepha sesistimu yokuphakelwa kwamandla.
Lawula ama-harmonics, wehlise i-harmonic current efakwe ohlelweni, futhi uhlangabezane nezidingo ezijwayelekile zenkampani yethu;
Isinxephezelo esiguqukayo samandla asebenzayo sinciphisa amandla esistimu wamanje futhi sithuthukisa isici samandla.

Izinkinga ongase uhlangane nazo?
1. Kunemithwalo eminingi yesigaba esisodwa, futhi imithwalo yesigaba esisodwa ingabangela i-harmonics yesigaba se-zero, engabangela izinkinga ezifana nokungalingani kwezigaba ezintathu kanye ne-asymmetry yesigaba sesithathu.
2. Isilinganiso somthwalo ongewona umugqa siphezulu, futhi izinga lokuhlanekezela i-harmonic lomthombo we-harmonic likhulu;
3. Imishini eminingi ehlakaniphile futhi ezenzakalelayo ekusabalaliseni amandla esakhiwo inezidingo eziphezulu zekhwalithi yokuphakelwa kwamandla, ikakhulukazi ezwela kuma-harmonics.

Isixazululo sethu:
1. Sebenzisa amandla asebenzayo wesistimu yesinxephezelo yedivayisi yesinxephezelo sokuphepha esimile yenkampani, futhi ulungiselele ngokunengqondo izinga lokusabela ngokuvumelana nezimo ze-harmonic zesistimu ukuvimbela ukukhuliswa kwe-harmonic.
2. Idivaysi yesinxephezelo sokuphepha esimile i-Hongyan TBB yamukela indlela yesinxephezelo exubile yesinxephezelo esivamile sezigaba ezintathu kanye nesinxephezelo esiyingxenye ukuze kuhlangatshezwane nezidingo zesinxephezelo sokungalingani kwesigaba sesithathu sohlelo;
3. Ngokusho kokusetshenziswa okuxubile kwesihlungi esisebenzayo se-Hongyan kanye nomvikeli we-harmonic HY1000, ingabhekana nobungozi be-pulse yamanje yesistimu yokusabalalisa amandla ezakhiwo zobunjiniyela zikamasipala, inciphise ukulahlekelwa kwesofthiwe yesistimu, futhi ithuthukise ukusebenza kahle okuphezulu kwe- uhlelo lokusabalalisa amandla.Amakhasimende anezidingo eziphezulu zokukhiqiza ukuphepha kwamandla.


Isikhathi sokuthumela: Apr-13-2023