Ukusetyenziswa komgama woKhuseleko we-Arc kunye ne-Waveform Distortion Resistance Test Bench ye-MCCB

Kwiminyaka yakutshanje, ngolwakhiwo olunzulu lweziseko ezitsha eTshayina, uguqulo olubanzi lwezikhululo zesiseko se-5G, ukusetyenziswa ngokubanzi kwezixhobo ze-elektroniki zamandla kunye nophuhliso olukhawulezayo lokuvelisa umbane we-photovoltaic, iimfuno zezixhobo zemveli eziphantsi-voltage ziyafumana. phezulu nangaphezulu.Kumashishini amashishini ekuphuhliseni kunye nokusetyenziswa kwamanqaku eentlungu, i-molded case circuit breaker arcing umgama okhuselekileyo kunye neprojekthi yokuvavanya ukuchithwa kokuphazamiseka, i-Delta, isixhobo se-Delta kwi-joint ukuya kootitshala beengcali eziphezulu ukuphuhlisa imimandla emibini ngokuhambelana neemfuno zovavanyo olulodwa. izixhobo, ezenzelwe ukunceda amashishini ukuxazulula ibhotile yesicelo semveliso, ukuhlangabezana neemfuno zabasebenzisi, ukuphucula umgangatho wokwenziwa kwemveliso.

Icala elibunjiweyo lesaphuli sesekethe arcing umgama okhuselekileyo test stand ikakhulu iqokobhe leplastiki uhlobo isaphuli sesekethe kwinkqubo yofakelo nokusetyenziswa, kuthathelwa ingqalelo umgama ukhuseleko akwanelanga kwaye kunokubangela ingozi, ezifana arcing fault kufuneka ukufunda iqokobhe leplastiki uhlobo isaphuli sesekethe kwi. Inqaku eliphambili kwinkqubo yokubona umgama okhuselekileyo we-flashover, kubandakanywa isekethe entsha yokudibanisa uvavanyo, iimfuno ezongezelelweyo kunye neendlela zokuvavanya, njl. iqondo impembelelo arc, kunye nereferensi yokhuseleko imveliso ehambelanayo umgama kunye neengcebiso ufakelo ecetywayo nganye

Iingozi zee-arcs ezibhabhayo

Ubushushu be-Arc buphezulu ukuya kutsho kumawakawaka amaqondo eCelsius, i-arc ngokwayo nayo ine-conductivity yombane, ingozi inkulu kakhulu., ukutshintshela kwishishini lamandla ombane ijethi yombane ye-arc, inokutshiza ngokuthe ngqo kwisixhobo sokutshintsha, iphaneli yokuhambisa, njengokumisa kwisakhelo sesinyithi, kuya kubangela umonakalo wentsimbi yomqhubi wentsimbi, imigca ibonakala ingaqhelekanga yombane wokunyuka, ukutshisa umqhubi, izixhobo zomlilo, i-insulation yokuguga imeko, okanye iimpazamo ze-short-circuit, ukuqhuma, umlilo, ukusongela ukhuseleko lobomi kunye nepropati, Kwi-petroleum, iikhemikhali, imigodi kunye namanye amashishini, ingqwalasela engaphezulu kufuneka ihlawulwe kumonakalo we-arc.

I-MCCB ivelisa i-arc xa abafowunelwa bayo abahambayo kunye nabafowunelwa be-static bahlulwe, kwaye inxalenye ye-arc okanye i-ionized gas ikhupha i-arc gap kwi-breaker's power supply.I-arc ngokwayo ingumsinga omkhulu.Kulula ukubangela isiphaluka esifutshane kunye nokumisa iingozi zesekethe ezimfutshane phakathi komqhubi we-C oveziweyo kunye nomhlaba.Ukuqinisekisa ukhuseleko, umsebenzisi kufuneka agcine umgama ukusuka kwidatha enikezelwe yiisampulu zemveliso yomenzi okanye iinkcukacha.

Icala elibunjiweyo lesaphuli sesekethe xa kusaphula i-short-circuit yangoku enkulu, i-arc eguquguqukayo kunye ne-static yoqhagamshelwano, inxalenye ye-arc okanye i-ionized gas arc yokutshiza umlomo ikhupha iphuma kwisiphelo samandla esaphuli-mthetho, ngokwayo luhlobo lwe-arc enkulu yangoku, kulula. ukubangela phakathi kwe-conductive eveziweyo kunye nomzimba otyalwayo kunye "nomhlaba" (iiseti ezipheleleyo zezixhobo zeqokobhe lesinyithi liphantsi) le-interphase short circuit kunye nokumisa ingozi yesekethe emfutshane.Ukuqinisekisa ukhuseleko, umsebenzisi kufuneka ashiye umgama othile ngokwedatha enikezelwe yisampula yemveliso yomenzi okanye incwadi yemiyalelo.Ukuba umgama wokuphakama webhokisi yokusabalalisa kunye nekhabhinethi ayanele, iimveliso ezinomgama omncinci we-arc okanye i-arc zero zingakhethwa ukuqinisekisa ukhuseleko lokusetyenziswa kombane.

I-molded case circuit breaker kwindlela yokusabalalisa amandla ombane ophantsi ukusetyenziswa kukhulu, kodwa kwinkqubo yokuqhawula kuya kuvelisa i-arc, i-arc iphuma kwimilo yemveliso ibe yi-arc, i-arc iyingozi, ukufumanisa kwayo kufuneka kuhlangabezane nemigangatho efanelekileyo kunye nezibonelelo, iindlela eziphambili. ukunciphisa umgama we-arc kubandakanya ukuphuculwa kwesakhiwo soqhagamshelwano kunye nenkqubo yokucima i-arc yokuphucula ukusebenza kwe-arc yokucima, ukwamkela isixhobo sokufunxa i-arc, ukwamkela isakhiwo somda sangoku, ukwamkela isizukulwana sesine isakhiwo sendawo yokuqhawula kabini, kunye nokwamkela i-arc yokucima i-vacuum. igumbi.

Icala elibunjiweyo lesaphuli sesekethe ukugqwethwa kokumelana novavanyo lokuma ikakhulu ekukhanyeni kwemeko yesicelo esikhethekileyo seplastiki yohlobo lwesaphuli sesekethe, ngokohlelo olwahlukileyo lomthwalo ongaqhelekanga kunye nokuhanjiswa kwenqanaba le-harmonic, kunye nenkqubo yovavanyo yokulinganisa ukulinganisa, uhlalutyo olucwangcisiweyo. kwidatha yovavanyo inokulinganisa imithwalo eyahlukeneyo ye-harmonic engafaniyo, umthwalo wempembelelo, umthwalo onobungozi;I-curve yayo yomthwalo kunye nemeko yokusebenza kwamandla inokucwangciswa kwangaphambili ngokwemfuno yovavanyo, kwaye inokulayishwa ngokuzenzekelayo ngokwexesha lokuhamba kwangaphambili.Ukusebenza kwezixhobo kulula kwaye kuguquguquka, kwaye sele isetyenziswe ngokubanzi kwinkqubo yovavanyo lwebhubhoratri yombane kunye nazo zonke iintlobo zeqonga lovavanyo lophuhliso lwemveliso ye-elektroniki.

Isixhobo sokuvelisa i-Harmonic kwinkqubo yamandla ngumthombo we-harmonic, sisixhobo sombane esingenamgca.Ngokusetyenziswa okubanzi komthamo omkhulu wezixhobo zombane kunye nemithwalo eyahlukeneyo engahambelaniyo kwinkqubo, ungcoliseko lwe-harmonic oluveliswa ngabo luye lwaqatshelwa ngakumbi kwaye lwanikwa ingqalelo.Ukuze ucinezele i-harmonics yenkqubo, kufuneka siqonde iimpawu zomthombo ngamnye we-harmonic.

Imithombo eyahlukeneyo ye-harmonic yahlulwe ibe:

(1) Uhlobo lwangoku lomthombo we-harmonic.

Umthombo we-harmonic wenkqubo uneempawu zomthombo wangoku, kwaye umxholo wayo we-harmonic uxhomekeke kwiimpawu zawo kwaye awunanto yakwenza neeparamitha zenkqubo.Isihluzo esihlaziyiweyo se-DC side inductance filter sikohlobo lwangoku lomthombo we-harmonic.

(2) uhlobo lombane lomthombo we-harmonic

Ibhentshi yokuvavanya i-MCCB waveform ilingana nejeneretha ye-harmonic ephezulu yokusebenza kwamandla, ukusebenza okuzimeleyo kwesigaba esithathu, kunokusebenza kwinqanaba lesithathu, imo yenqanaba elinye, amaxesha e-harmonic ukuya kuma-41.Isigaba kunye ne-amplitude ye-harmonic nganye inokucwangciswa ngokuzimeleyo, enokuthi ifanise ukuchasana okuqhelekileyo kunye nomthwalo owenziweyo kunye nomthwalo onzima ongeyena umgca.I-harmonic ebangelwa yimithwalo eyahlukeneyo kwinethiwekhi yamandla inokulinganiswa kwaye iveliswe kwakhona.

Iiparamitha zokucwangcisa ziquka i-wave yesiseko kunye ne-harmonic voltage, yangoku, amandla, isigaba, i-amplitude, njl.

I-amplitude yomthwalo wempembelelo isoloko ihlengahlengiswa.

Inokuqonda ukulinganisa kweendawo ezahlukeneyo zokusebenza, njengobude belizwe, i-voltage, yangoku, iiparamitha zamandla, njl.njl., ezinokusebenza ngokuzenzekelayo ngokwexesha elimisiweyo.

Ukuchaneka kwemveliso yangoku kuphezulu, ukuchaneka kufikelele kwi-± 1%, i-10A ngezantsi ingekho ngaphantsi kwe-plus okanye i-0.1A;

I-THD ephantsi ye-harmonic (i-3-5) ukuchaneka ayikho ngaphezu kwe-± 2%, ukuphambuka kwe-harmonic enye yi-± 8%, umxholo wezinga lokuphazamiseka kwe-waveform enye ≥40%, i-harmonic distortion rate iyonke ≥100%;

Ngelo xesha, izixhobo zinomsebenzi wokuvuselela amandla okuvuselela amandla e-AC, onokuzondla emva kwe-100% imveliso yamandla e-AC yemveliso evavanyiweyo kwigridi yamandla, ngaphandle kokuvelisa ukushisa, ukonga amandla kunye nokukhuselwa kwendalo.

Umsebenzi wokuphindaphinda i-Waveform: isixhobo somthwalo sinokusetwa ngokuzenzekelayo ngokuhambelana nefayile ye-waveform yomthwalo erekhodiweyo okanye ihlanganiswe kwindawo, ukuze kuqondwe umsebenzi onokuthi wenziwe ngokutsha kwindawo okanye iimpawu zomthwalo ofunekayo.

Iimeko zokulinganisa umthwalo zinokumiselwa ngokweemfuno:

I-1) Inokulinganisa zombini inqanaba lesithathu kunye nomthwalo wesigaba esisodwa;

2) I-voltage, yangoku kunye namandla omthamo wamaza asisiseko kunye ne-harmonic wave inokumiselwa ngokwahlukileyo;

3) I-wave yesiseko kunye nombane we-harmonic, okwangoku kunye namandla anokusetwa ngokulandelelana kwe-amplitude, isigaba, amandla kunye nezinye iiparamitha;

I-4) I-amplitude kunye ne-parameters yesigaba se-harmonic nganye inokusekwa ngokwahlukileyo, ngokuzimeleyo, kwaye ayichaphazeli;

5) I-amplitude yomthwalo wempembelelo ingalungiswa ngokuqhubekayo;

6) Unokuqonda iindlela ezahlukeneyo zokulinganisa imeko yokusebenza, ixesha leemeko ezahlukeneyo, i-voltage, yangoku, iiparamitha zamandla;

7) Inokusekwa ngokuzimeleyo.