Isingeniso Seyunithi Eyinhloko Yendandatho

Ikhabhinethi yenethiwekhi yendandatho ivame ukwaziwa ngokuthi i-SF6 load switch kanye ne-SF6 load switch + i-fuse combination appliance esetshenziswa emgqeni wenethiwekhi yendandatho noma esigungwini. I-SF6 load switch iyi-load switch enhle kakhulu etholwa abasebenzisi abaningi eminyakeni yamuva. Ngaphezu kwezinzuzo zokuphila isikhathi eside kukagesi, amandla okuphuka aqinile kanye ne-vacuum load switch, izinzuzo zayo ezivelele kulula ukuzifeza izikhundla ezintathu zokusebenza (ezivuliwe, ezivaliwe kanye nezingaphansi komhlaba), ugesi omncane (i-inductance, i-capacitance) ukuvula nokuphula, kanye nekhono eliqinile lokumelana nezimo zemvelo ezinzima. Ifanelekile ukuthandwa nokusetshenziswa kunethiwekhi yokusabalalisa i-voltage ephakathi yasemadolobheni nasemaphandleni.

Ikhabhinethi yenethiwekhi yendandatho ngokuvamile ihlukaniswe izinhlobo ezimbili: ukufakelwa komoya kanye nokufakelwa kwe-SF6. Isetshenziselwa ukuhlukanisa nokuvala ugesi womthwalo, ukuvula nokuphula ugesi wesifunda esifushane kanye nogesi we-transformer ongenamthwalo, kanye nogesi wokushaja womugqa ophezulu kanye nomugqa wekhebula ebangeni elithile. Idlala indima yokulawula nokuvikela, futhi iyimishini ebalulekile yokushintsha ugesi wenethiwekhi yendandatho kanye nokunikezwa kwamandla kagesi. Emzimbeni wekhabhinethi, inkinobho yomthwalo efakwe ukufakelwa komoya ifaka kakhulu uhlobo lokukhiqiza igesi, uhlobo lokucindezela kanye nohlobo lwe-vacuum. Inkinobho yomthwalo efakwe ukufakelwa kwe-SF6 uhlobo lwe-SF6. Ngenxa yokuthi igesi ye-SF6 ivaliwe egobolondweni, ukuqhekeka kokuhlukanisa okwakhiwa yiyo akubonakali. Inkinobho yomthwalo ekhabhinethini yenethiwekhi yendandatho ngokuvamile idinga iziteshi ezintathu, okungukuthi, ukusika umthwalo, ukuhlukanisa isekethe, kungenzeka ngokubeka phansi. Uhlobo lokukhiqiza igesi, uhlobo lokucindezela kanye nomshini wokulayisha wohlobo lwe-SF6 kulula ukufeza iziteshi ezintathu, futhi igumbi lokucisha i-arc ye-vacuum lingaphulwa kuphela, alikwazi ukuhlukanisa, ngakho-ke inkinobho yenethiwekhi yendandatho yomthwalo we-vacuum ejwayelekile ngaphambi kokushintsha komthwalo yengeza inkinobho yokuhlukanisa, ukuze kwakheke ikhefu lokuhlukanisa.

Iswishi yokulayisha uhlobo lomshini wokushintsha onedivayisi yokucisha i-arc elula. Iswishi yokulayisha esebenzisa igesi ye-SF6 njenge-insulation kanye ne-arc extinguisher medium ibizwa ngokuthi i-SF6 load switch. Ingasetshenziswa ukuvula nokuvala i-load current kanye nokulayisha ngokweqile i-current, futhi ingasetshenziswa futhi ukuvula nokuvala imigqa engenamthwalo, ama-transformer angenayo umthwalo kanye nama-capacitor banks, njll. Iswishi yokulayisha enama-bit amathathu enemisebenzi ye-on, off and ground inezici zesakhiwo esilula kanye nentengo ephansi. Iswishi yokulayisha kuphela engakwazi ukunqamula i-short circuit current.

Iswishi yomthwalo ye-SF6 + umshini wokuhlanganisa i-fuse usetshenziswa yi-SF6 load switch ukuze uthwale i-overload current (i-overload current ye-SF6 load switch isesebangeni le-load switch elinganiswe ngaphandle kwamanje) kanye nokuvala nokuphuka kwamanje okusebenza okuvamile, futhi kudinga futhi ukuthwala "i-transfer current". Ama-voltage aphezulu anesibopho sokuvikela i-short circuit kanye nokuvikelwa kwe-overload ohlangothini lwe-voltage ephezulu. Ngalesi sikhathi, iqembu le-SF6 load switch kanye nama-fuse amathathu ane-trigger, inqobo nje uma kunesenzo se-trigger, indlela yokuxhumanisa izokwenza i-load switch ibe yi-automatic switch yesigaba sesithathu. Ukuhlanganiswa kwalokhu okubili kungahlangabezana nezidingo zokuvikelwa kokusebenza kohlelo lokusabalalisa amandla ngaphansi kwezimo ezijwayelekile nezingalungile.

Ikhabhinethi yenethiwekhi yendandatho ingahlukaniswa ibe yinethiwekhi yendandatho yangaphakathi kanye nenethiwekhi yendandatho yangaphandle

Inethiwekhi ye-loop yangaphakathi ivame ukusetshenziselwa ukusatshalaliswa kwamandla ohlangothini lwe-voltage ephezulu. Yakhiwa yikhabhinethi yomugqa engenayo, ikhabhinethi yokulinganisa, ikhabhinethi ye-PT kanye nekhabhinethi ye-transformer outlet. Kubasebenzisi abanezidingo zamandla aphezulu, umugqa ongenayo kumele usebenzise ikhabhinethi yokushintsha amandla amabili. Isitezi sesikhombisa sathi “manje abanye abantu bazofaka inhlanganisela yeswishi kanye ne-fuse yekhabhinethi yokushintsha kwamandla aphezulu ebizwa ngokuthi ikhabhinethi yenethiwekhi yendandatho, ikakhulukazi kulula ukuyihlukanisa nekhabhinethi yokushintsha ye-circuit breaker” ayinembile, ikhabhinethi yenethiwekhi yendandatho nayo inohlelo lwe-circuit breaker.

Inethiwekhi yendandatho yangaphandle ivame ukusetshenziswa kugridi yamandla yasemadolobheni, kusetshenziswa ikhabhinethi yenethiwekhi yendandatho yohlobo lwebhokisi elivamile le-SF6, isici esikhulu salolu hlobo lwekhabhinethi ukuthi izinga lokuvikela liphezulu, lingenza i-IP67, lifanelekela ngaphandle, futhi lingacwiliswa emanzini isikhathi esifushane. Uhlelo lokunikezwa kwamandla enethiwekhi ye-loop luvame ukusebenzisa i-loop eyodwa ngaphakathi, i-loop eyodwa ngaphandle, kabili noma kathathu ukwenza isekethe ephumayo, okungukuthi, ukwakheka kwemodi yokunikezwa kwamandla enethiwekhi ye-loop ngesandla.

Ukuze kuqinisekiswe ukuthembeka nokuqhubeka kokunikezwa kwamandla, kusetshenziswa imigqa emibili yokungena ukuhlinzeka ngamandla, eyakha indandatho. Iswishi yomthwalo ye-SF6, iziteshi ezi-3 (ukuvala, ukuvula, ukusekela), umugqa wegatsha, i-transformer.