Intshayelelo kwiYunithi ephambili yeRingi

Ikhabhinethi yenethiwekhi yeringi yaziwa kakhulu ngokuba yi-SF6 load switch kunye ne-SF6 load switch + isixhobo sokudibanisa i-fuse esisetyenziswa kumgca wenethiwekhi yeringi okanye kwisiphelo. I-SF6 load switch yi-load switch ebalaseleyo efunyenwe ngabasebenzisi abaninzi kwiminyaka yakutshanje. Ukongeza kwiingenelo zobomi obude bombane, amandla okuqhekeza aqinileyo kunye ne-vacuum load switch, iingenelo zayo ezibalaseleyo kulula ukuzifezekisa izikhundla ezintathu zokusebenza (kwi-, off and ground), i-current encinci (inductance, capacitance) yokuvula nokuqhekeza, kunye nokukwazi okunamandla okumelana neemeko ezinzima zokusingqongileyo. Ifanelekile ukuthandwa nokusetyenzwa kwinethiwekhi yokusasazwa kwe-voltage ephakathi ezidolophini nasemaphandleni.

Ikhabhinethi yenethiwekhi yeringi ngokubanzi yahlulwe yaba ziintlobo ezimbini: i-insulation yomoya kunye ne-SF6 insulation. Isetyenziselwa ukwahlukanisa nokuvala i-load current, ukuvula nokuphula i-short circuit current kunye ne-transformer no-load current, kunye ne-charging current yomgca ophezulu kunye nomgca wekhebula kumgama othile. Idlala indima yokulawula nokukhusela, kwaye sisixhobo esibalulekileyo sokutshintsha umbane wenethiwekhi yeringi kunye nombane wesiphelo. Kwikhabhinethi yomzimba, i-load switch exhotyiswe nge-air insulation ibandakanya ikakhulu uhlobo lwemveliso yegesi, uhlobo loxinzelelo kunye nohlobo lwe-vacuum. I-load switch exhotyiswe nge-SF6 insulation luhlobo lwe-SF6. Ngenxa yokuba igesi ye-SF6 ivaliwe kwigobolondo, ukwaphuka kwesahlulo okwenziwe yiyo akubonakali. I-load switch kwikhabhinethi yenethiwekhi yeringi ngokubanzi ifuna izitishi ezintathu, oko kukuthi, ukusika umthwalo, ukwahlukanisa isekethe, kunokwenzeka ngokubeka umhlaba phantsi. Uhlobo lwemveliso yegesi, uhlobo loxinzelelo kunye ne-SF6 load switch kulula ukufikelela kwizitishi ezintathu, kwaye igumbi lokucima i-vacuum arc linokwaphulwa kuphela, alinakwahlulwa, ngoko i-vacuum load ring network switch iyongeza i-isolation switch ngaphambi kwe-load switch, ukuze kwenziwe i-isolation break.

Iswitshi yomthwalo luhlobo lwesixhobo sokutshintsha esinesixhobo esilula sokucima i-arc. Iswitshi yomthwalo esebenzisa igesi ye-SF6 njenge-insulation kunye ne-arc extinguishing medium ibizwa ngokuba yi-SF6 load switch. Ingasetyenziselwa ukuvula nokuvala i-load current kunye ne-overload current, kwaye ingasetyenziselwa ukuvula nokuvala imigca engenamthwalo, ii-transformers ezingenamthwalo kunye nee-capacitor banks, njl. Iswitshi yomthwalo ye-three-bit enemisebenzi ye-on, off and ground ineempawu zesakhiwo esilula kunye nexabiso eliphantsi. Yiswitshi yomthwalo kuphela engenako ukukhupha i-short circuit current.

Iswitshi yomthwalo ye-SF6 + isixhobo sokudibanisa ifusi sisetyenziswa yi-SF6 load switch ukuthwala i-overload current (i-overload current ye-SF6 load switch isengaphakathi koluhlu lweswitshi yomthwalo elinganiswe kwi-current) kunye ne-current yokusebenza eqhelekileyo yokuvala nokuphula, kwaye ikwafuna ukuthwala "i-transfer current". Ii-fuse ze-voltage ephezulu zinoxanduva lokukhusela i-short circuit kunye nokukhusela i-overload kwicala le-voltage ephezulu. Ngeli xesha, iqela le-SF6 load switch kunye nee-fuse ezintathu ezine-triggers, logama nje nayiphi na intshukumo ye-trigger, indlela yayo yokudibanisa iya kwenza i-load switch ibe yi-automatic switch yesigaba sesithathu. Ukudibana kwezi zimbini kunokuhlangabezana neemfuno zokhuseleko lokusebenza kwenkqubo yokusasazwa kwamandla phantsi kweemeko eziqhelekileyo kunye neziphene.

Ikhabhinethi yenethiwekhi yeringi inokwahlulwa ibe yinethiwekhi yeringi yangaphakathi kunye nenethiwekhi yeringi yangaphandle

Inethiwekhi yeluphu yangaphakathi idla ngokusetyenziselwa ukusasazwa kwamandla kwicala le-voltage ephezulu. Yenziwe yikhabhinethi yomgca ongenayo, ikhabhinethi yokulinganisa, ikhabhinethi ye-PT kunye nekhabhinethi ye-transformer outlet. Kubasebenzisi abaneemfuno zamandla aphezulu, umgca ongenayo kufuneka usebenzise ikhabhinethi yeswitshi yamandla amabini. Umgangatho wesixhenxe uthe "ngoku abanye abantu baza kulayisha iswitshi kunye ne-fuse indibaniselwano yekhabhinethi yeswitshi yamandla aphezulu ebizwa ngokuba yi-ring network cabinet, ikakhulu kulula ukuyiqonda nge-circuit breaker switch cabinet" ayichanekanga, ikhabhinethi yenethiwekhi yeringi ikwanayo nenkqubo ye-circuit breaker.

Inethiwekhi yeringi yangaphandle isetyenziswa ngokubanzi kwigridi yamandla asezidolophini, kusetyenziswa ikhabhinethi yenethiwekhi yeringi ye-SF6 eqhelekileyo, uphawu olukhulu lolu hlobo lwekhabhinethi kukuba inqanaba lokhuseleko liphezulu, lingenza i-IP67, lifanelekile ngaphandle, kwaye linokuntywiliselwa emanzini ixesha elifutshane. Inkqubo yombane wenethiwekhi yeringi ngokubanzi isebenzisa i-loop enye ngaphakathi, i-loop enye iphume, kabini okanye kathathu ukwenza isekethe ephumayo, oko kukuthi, ukwenziwa kwendlela yombane wenethiwekhi yeringi ngesandla.

Ukuqinisekisa ukuthembeka nokuqhubeka kokunikezelwa kombane, kusetyenziswa imigca emibini yokungena ukubonelela ngombane, eyenza isangqa. Iswitshi yomthwalo ye-SF6, izitishi ezi-3 (ukuvala, ukuvula, ukumisa), umgca wesebe, itransformer.