Ukusetshenziswa Kwebanga Lokuphepha le-Arc ne-Waveform Distortion Resistance Test Bench ye-MCCB

Eminyakeni yamuva nje, ngokwakhiwa okujulile kwengqalasizinda entsha e-China, ukuguqulwa okuphelele kweziteshi eziyisisekelo ze-5G, ukusetshenziswa okubanzi kwemishini kagesi kagesi kanye nokuthuthukiswa okusheshayo kokukhiqizwa kwamandla kagesi we-photovoltaic, izidingo zemishini yendabuko ephansi ye-voltage iyathola. phezulu nangaphezulu.Okwamabhizinisi ezimboni ekuthuthukisweni nasekusetshenzisweni kwamaphuzu obuhlungu, i-molded case circuit breaker arcing ibanga eliphephile kanye nephrojekthi yokuhlola ukuhlanekezelwa kwe-waveform, i-Delta, ithuluzi le-Delta ekuhlanganyeleni kothisha abangochwepheshe abakhulu ukuthuthukisa izindawo ezimbili ngokuhambisana nezidingo zokuhlolwa okukhethekile. imishini, eklanyelwe ukusiza amabhizinisi ukuxazulula ibhodlela lokusetshenziswa komkhiqizo, ukuhlangabezana nesidingo sabasebenzisi, ukuthuthukisa ikhwalithi yokusebenza komkhiqizo.

I-molded case circuit breaker arcing indawo yokuhlola amabanga aphephile ikakhulukazi eyephuli wesifunda segobolondo lepulasitiki ngesikhathi sokufakwa nokusetshenziswa, uma kucatshangelwa ibanga lokuphepha alanele futhi lingabangela ukulimala, njengephutha le-arcing isidingo sokutadisha i-plastic shell type breaker on. Iphuzu elibalulekile ohlelweni lokutholwa kwebanga eliphephile le-flashover, okuhlanganisa isekethe entsha yokuxhumana yokuhlola, izidingo ezengeziwe nezindlela zokuhlola, njll., Uhla lwethonya le-arc le-plastic enclosure circuit breaker liyalingiswa, futhi indawo yebanga ihlukaniswa ngokuvumelana izinga lethonya le-arc, kanye nereferensi yebanga lokuphepha lomkhiqizo elihambisanayo kanye neziphakamiso zokufakwa kuhlongozwa ngayinye

Izingozi zama-arcs endizayo

Izinga lokushisa le-arc liphakeme njengezinkulungwane zama-degree Celsius, i-arc ngokwayo nayo inokuguquguquka kagesi, ukulimala kubi kakhulu., shintsha embonini yamandla kagesi ijethi kagesi ye-arc, ingase ifafaze ngokuqondile ku-switchgear, iphaneli yokusabalalisa, njengokumisa ohlakeni lwensimbi, izobangela umonakalo wekhondatha yensimbi, imigqa ibonakale inamandla okushisa angavamile, umqhubi wokushisa, okokusebenza komlilo, ukuguga kwe-insulation, noma amaphutha we-short-circuit, ukuqhuma, umlilo, okusongela ukuphepha kwezimpilo nempahla, Ezimbonini ze-petroleum, amakhemikhali, izimayini nezinye, kufanele kubhekwe kakhulu ukulimala kwe-arc.

I-MCCB ikhiqiza i-arc lapho abathintwayo abanyakazayo nabathintwayo abamile behlukaniswa, futhi ingxenye ye-arc noma igesi eyi-ionized ikhahlela igebe le-arc ekunikezeni amandla okuphula.I-arc ngokwayo ingumsinga omkhulu.Kulula ukubangela isifunda esifushane kanye nokumisa izingozi zesekethe emfushane phakathi kwekhondakta eveziwe engu-C nendawo.Ukuqinisekisa ukuphepha, umsebenzisi kufanele agcine ibanga ukusuka kudatha enikezwe amasampula omkhiqizo womkhiqizi noma ukucaciswa.

I-Circle ye-circuit yecala elibunjiwe lapho iphula umthamo omkhulu we-short-circuit current, i-arc yokuxhumana eguquguqukayo ne-static, ingxenye ye-arc noma i-ionized gas arc spraying umlomo iphuma emlonyeni we-circuit breaker power end, ngokwayo iwuhlobo lwe-arc enkulu yamanje, kulula. ukubangela phakathi kwe-conductive eveziwe kanye nomzimba oshajiwe ongenalutho kanye “nomhlabathi” (amasethi aphelele ezinto zokusebenza zegobolondo lensimbi liphansi) lesekhethi ye-interphase kanye nengozi yesekethe ephansi.Ukuqinisekisa ukuphepha, umsebenzisi kufanele ashiye ibanga elithile ngokuya ngedatha enikezwe isampula lomkhiqizo womkhiqizi noma imanuwali yeziqondiso.Uma ibanga lokuphakama kwebhokisi lokusabalalisa kanye nekhabhinethi linganele, imikhiqizo enebanga elincane le-arc noma i-zero arc ingakhethwa ukuze kuqinisekiswe ukuphepha kokusetshenziswa kukagesi.

I-Molded case circuit breaker in low voltage distribution system ukusetshenziswa kukhulu, kodwa enqubweni yokuphuka kuzokhiqiza i-arc, i-arc iphume esimweni somkhiqizo ibe i-arc, i-arc iyingozi, ukutholwa kwayo kufanele kuhlangabezane nezindinganiso ezifanele kanye nezinhlinzeko, Izindlela eziyinhloko ukunciphisa ibanga le-arc kufaka phakathi ukuthuthukisa ukwakheka kokuthintana nesistimu yokucima i-arc ukuze kuthuthukiswe ukusebenza kokucisha i-arc, ukwamukela idivayisi yokumunca i-arc, ukwamukela isakhiwo samanje esikhawulelayo, ukwamukela isakhiwo sendawo yesizukulwane sesine sephuzu eliphindwe kabili, kanye nokwamukela isicimi se-vacuum arc. igumbi.

Icala elibunjiweyo elibunjiwe le-waveform ukuhlanekezela ukumelana kokuhlolwa kwesimo sokuhlola ikakhulukazi isimo sokusetshenziswa esikhethekile se-plastic shell type breaker, ngokuya ngezigaba ezihlukene zomthwalo ovamile ongaqondile nokusabalalisa izinga le-harmonic, kanye nenqubo yokuhlola yokuhlolwa kokulingisa, ukuhlaziywa okuhlelekile. kudatha yokuhlola ingalingisa imithwalo ehlukahlukene ye-harmonic engaqondile, umthwalo womthelela, umthwalo omubi;Ijika layo lomthwalo kanye nesimo sokusebenza kwamandla kungahlelwa kusenesikhathi ngokwesidingo sokuhlolwa, futhi kungalayishwa ngokuzenzakalelayo ngokuya kwesikhathi esisethiwe sokusebenza.Ukusebenza kwemishini kulula futhi kuyavumelana nezimo, futhi iye yasetshenziswa kabanzi ohlelweni lokuhlola elabhorethri kagesi kanye nazo zonke izinhlobo zesikhulumi sokuhlola sokuthuthukiswa komkhiqizo we-elekthronikhi wamandla.

Ithuluzi lokukhiqiza i-Harmonic ohlelweni lwamandla liwumthombo we-harmonic, umshini kagesi ongaqondile.Ngokusetshenziswa okubanzi kwamandla amakhulu emishini kagesi kanye nemithwalo ehlukahlukene engaqondile ohlelweni, ukungcoliswa kwe-harmonic okukhiqizwa yikho kuye kwaqashelwa futhi kunakwa kakhulu.Ukuze ucindezele i-harmonics yesistimu, kufanele siqonde izici zomthombo ngamunye we-harmonic.

Imithombo ehlukene ye-harmonic ihlukaniswe yaba:

(1) Uhlobo lwamanje lomthombo we-harmonic.

Umthombo we-harmonic wesistimu unezici zomthombo wamanje, futhi okuqukethwe kwawo kwe-harmonic kuncike ezicini zawo futhi akuhlangene nemingcele yesistimu.Isilungisi kabusha sesihlungi se-DC side inductance esohlobo lwamanje lomthombo we-harmonic.

(2) uhlobo lwe-voltage umthombo we-harmonic

Ibhentshi lokuhlola ukumelana ne-waveform ye-MCCB lilingana nejeneretha yamandla e-harmonic esebenza kakhulu, ukusebenza okuzimele kwezigaba ezintathu, kungasebenza ngezigaba ezintathu, imodi yesigaba esisodwa, izikhathi ze-harmonic kuze kufike ezikhathini ezingama-41.Isigaba kanye ne-amplitude ye-harmonic ngayinye ingahlelwa ngokuzimela, engakwazi ukulingisa ukuphikiswa okuvamile kanye nomthwalo we-inductive kanye nomthwalo onzima ongaqondile.I-harmonic ebangelwa imithwalo ehlukene kunethiwekhi yamandla ingalingiswa futhi yenziwe kabusha.

Imingcele yokuhlela ihlanganisa i-wave wave kanye ne-harmonic voltage, yamanje, amandla, isigaba, i-amplitude, njll.

I-amplitude yomthwalo womthelela ilungiswa ngokuqhubekayo.

Ingabona ukulingiswa kwezimo ezihlukene zokusebenza, njengesikhathi sombuso, i-voltage, yamanje, imingcele yamandla, njll., engasetshenziswa ngokuzenzakalelayo ngokuya kwesikhathi esimisiwe.

Ukunemba kokukhishwa kwamanje kuphezulu, ukunemba kufika ku-±1%, 10A ngezansi hhayi ngaphansi kuka-plus noma susa u-0.1A;

Ukunemba kwe-THD okuphansi kwe-harmonic (3-5) akukhona ngaphezu kwe-± 2%, ukuchezuka okukodwa kwe-harmonic kungu-± 8%, okuqukethwe kwesilinganiso sokuhlanekezela kwe-waveform eyodwa ≥40%, inani eliphelele lokuhlanekezela kwe-harmonic ≥100%;

Ngesikhathi esifanayo, okokusebenza kunomsebenzi we-AC energy regenerative load, engabuyisela amandla angu-100% AC okukhipha amandla omkhiqizo ohloliwe kugridi yamandla, ngaphandle kokukhiqiza ukushisa, ukonga amandla nokuvikelwa kwemvelo.

Umsebenzi wokuphindaphinda i-Waveform: idivayisi yokulayisha ingasethwa ngokuzenzakalelayo ngokuya ngefayela le-waveform yomthwalo elirekhodiwe noma elihlanganiswe khona lapho, ukuze kubonakale umsebenzi wokuthi i-waveform yomthwalo kuphela engenziwa kabusha endaweni noma izici ezidingekayo zomthwalo.

Izimo zokulingisa zokulayisha zingahlelwa ngokuya ngezidingo:

I-1) Ingalingisa kokubili ukulayisha kwezigaba ezintathu kanye nomthwalo wesigaba esisodwa;

2) I-voltage, yamanje kanye namandla omthwalo wamagagasi ayisisekelo kanye ne-harmonic wave ingalungiswa ngokuhlukana;

3) I-wave eyisisekelo kanye ne-harmonic voltage, yamanje namandla ingasethwa ngokulandelanayo i-amplitude, isigaba, isici samandla kanye neminye imingcele;

I-4) Amapharamitha we-amplitude nesigaba se-harmonic ngayinye angasethwa ngokwehlukana, azimele komunye nomunye, futhi angathinti omunye nomunye;

5) I-amplitude yomthwalo womthelela ingalungiswa ngokuqhubekayo;

6) Ingakwazi ukubona ukulingisa okuhlukahlukene kwesimo sokusebenza, ubude bezifundazwe ezahlukahlukene, i-voltage, yamanje, imingcele yamandla;

I-7) Ingasethwa ngokuzimela.