I-high voltage circuit breakeribhekisela kumjikelezo ingaxhunywa, inqanyulwe futhi iguqulelwe kumadivayisi kagesi.Ngokuya ngokuthi kukhona okwamanje kusekethe, i-HV circuit breaker ihlukaniswe nge-on-load switch kanye ne-no-load switch.Inokusebenza kokuqothulwa kwe-arc okuphezulu futhi ingavala noma ivale ukuvikelwa kwe-over-voltage kanye nokwedlulele kwamanje ohlelweni lwamandla phakathi nesikhathi esinqunyiwe.Kumagridi anamandla angu-500 kV noma ngaphezulu, ukusebenza njalo kuyadingeka ukuze kuqinisekiswe ukuguquguquka okwanele kanye nokuzinza kohlelo.
Izici zokusebenza
I-1, I-circuit breaker inemisebenzi yokuvikela i-over-voltage nokuvikela isifunda esifushane, futhi ingasetshenziselwa ukuvikela nokulawula imigqa, amadivaysi okusabalalisa kanye nemithwalo.
2, I-circuit breaker inomsebenzi wokucisha i-arc, futhi inganqamula ngokushesha futhi ngokuthembekile i-arc phakathi kuka-10 ms.
I-3, I-breaker circuit inezici zokuvula isikhathi esifushane nokuvala, futhi ifanele izindawo zokusebenza njalo.
I-4, I-circuit breaker ingakwazi ukubona umsebenzi wokuhlukanisa okungenamthwalo, okusiza ukusebenza njalo futhi kufinyeze isikhathi sokunqanyulwa kwamandla.
5、 Ngokuyisisekelo ayinasondlo kuwo wonke umjikelezo wempilo;phakathi nesikhathi sokucisha, isikhathi sokungabikho kwe-welding kothintana nabo abahambayo nabamile futhi akukho mandla kazibuthe kagesi kukhoyili yokuvala ye-circuit breaker sifushane, okuqinisekisa ukuthi i-circuit breaker ngeke iphele.
6, Inezici zevolumu encane nesisindo esincane.
7, Igumbi lokucisha i-arc le-vacuum lizokwamukelwa futhi idivayisi yokulawula yokucisha i-arc izosetshenziswa esikhundleni sendlela yokusebenza ngesandla;Igumbi lokucisha i-arc lizothembeka, lihlanganiswe ekwakhiweni futhi libe lincane ngosayizi wokufaka.
Isimiso sokusebenza
Lapho i-circuit breaker inikwe amandla, ukuthintana okunyakazayo kumshini kushayela intwasahlobo yokuvala ngokusebenzisa indlela yokudlulisa ukuvala i-circuit breaker.Intwasahlobo yasentwasahlobo yenza i-breaker ivale endaweni.
Lapho i-breaker yesifunda iphukile, othintana nabo abahambayo nabamile bayahlukaniswa, futhi othintana nabo abahambayo ku-mechanical bahlelwa kabusha kuqala, bese umjikelezo unqanyulwa ngokushayela izinduku zokuxhuma ezihlukanisayo nokuvala ngaphansi kwesenzo samandla entwasahlobo.Ukuma kothintana naye onyakazayo kanye nokuxhumana okumile kulawulwa indlela yokugcina amandla entwasahlobo ukugcina othintana naye esendaweni ethile.
Ngaphezu kwalokho, kunezinye izesekeli ezifana ne-latching switch, njll, ezenza i-breaker yesifunda igcine isikhundla esithile ngesikhathi sokuphuka nokuvala, ukuze kuvinjelwe ukuhlukana nokungahambi kahle.
Isici sesakhiwo
1. I-circuit breaker yenziwe ngegobolondo, iqembu lokuxhumana, igumbi lokucima i-arc, i-arc yokucisha othintana naye, othintana naye osizayo kanye nendlela yokusebenza.Ngenxa yokuthi i-contact kanye ne-interrupter chamber ye-circuit breaker ihlukaniswe futhi ihlanganiswe ngamandla kagesi, isakhiwo sokuxhumana sinomthelela omkhulu ekusebenzeni kwe-circuit breaker.
2. Izinqamuli zesekethe zizohlukaniswa zibe iziphazamisi zesekethe ezivale umoya kanye neziphazamisi ze-arc ze-vacuum ngokuya ngemidiya ehlukene yokuphazamisa i-arc, futhi zihlukaniswe zibe uhlobo lokushintshwa komthwalo kanye nohlobo lwesiphazamisi se-vacuum arc ngokuya ngezimo ezihlukene zokusebenzisa.
3. Ukuze unike amandla ukuhlukana okuthembekile nokuhlanganiswa phakathi kweqembu lokuxhumana neqembu lokuxhumana, indlela yokunciphisa isikhundla ihlelwa eqenjini lokuxhumana.Indawo yokushintsha ilawulwa isibambo somkhawulo.Izinqamuli ezihlukene zinezinqubo ezihlukene zomkhawulo, kodwa zonke zinemisebenzi ehambisanayo.
Ukwahlukanisa
I-1, Ngokwemodi yokusebenza kwama-breaker circuit, kunezinhlobo ezimbili zama-breaker: i-on-load breaker kanye ne-no-load breaker.
2, Ama-circuit breaker angahlukaniswa abe yi-oil circuit breaker, i-vacuum circuit breaker kanye ne-sulphur hexafluoride circuit breaker ngokuya ngendawo yokucisha i-arc.
3, Ngokomgomo wokucisha i-arc, kunezinhlobo ezimbili zokucisha i-arc, enye i-arc yokucisha ngaphandle kwe-arc, enye i-arc yokucisha ngaphandle kwe-arc.Ngenxa yokuthi ayikho i-arc circuit breaker ohlelweni lokuvala, ngenxa yamandla kagesi, akunakwenzeka ukufeza ukuqothulwa okuphelele.
Owokuqala usebenzisa umoya njenge-insulating medium kanti eyesibili isebenzisa i-sulphur hexafluoride njengendawo yokuvikela.
I-5, Ngokwezigaba zemisebenzi yokuvikela, ingahlukaniswa ngokuvikelwa kwamaphutha wesifunda esifushane kanye nokuvikelwa kwamaphutha wesifunda esifushane.
Isikhathi sokuthumela: Feb-20-2023