Mayelana ne-high voltage bushing

I-High-voltage bushing ibhekisela esisetshenziswa esivumela isikhondatha esisodwa noma ezimbalwa ukuthi zidlule kuma-partitions afana nezindonga noma amabhokisi okufakwa nokusekelwa, futhi iyithuluzi elibalulekile ezinhlelweni zamandla.Enqubweni yokukhiqiza, ukuthutha kanye nokugcinwa, ama-high-voltage bushings angase abe nokukhubazeka okucashile ngenxa yezizathu ezihlukahlukene;ngesikhathi sokusebenza isikhathi eside, bathinteka emiphumeleni yensimu kagesi kanye nokushisa kwe-conductor, ukulimala kwemishini kanye nokugqwala kwamakhemikhali, nezimo zomoya.Kuzophinde kube namaphutha kancane kancane.

Izihlahla ezinama-voltage aphezulu zisetshenziselwa ikakhulukazi ukufakwa komhlabathi kwezintambo zikagesi ezingenayo neziphumayo njengama-transformer, ama-reactors, nama-circuit breaker, namasekhethi anagesi aphezulu adlula ezindongeni.Kunezinhlobo ezintathu ze-high voltage bushings: i-single dielectric bushing, i-composite dielectric bushing kanye ne-capacitive bushing.I-insulation eyinhloko ye-capacitive bushing yakhiwe i-coaxial cylindrical series capacitor bank eyakhiwe ngezinto zokuvikela ezinezingqimba ezimazombezombe kanye nama-electrode ensimbi ye-foil ngokushintshana ku-conductive rod.Ngokusho kwezinto ezihlukene zokuvikela i-insulating, ihlukaniswe ngephepha le-gummed nephepha elifakwe amafutha e-capacitive bushing.I-110kV nangaphezulu kwe-transformer high-voltage bushings ngokuvamile i-oyela-iphephauhlobo lwe-capacitor;Yakhiwe ngamatheminali ezintambo, ikhabethe lokugcina uwoyela, umkhono we-porcelain ongaphezulu, umkhono we-porcelain ophansi, i-capacitor core, induku yomhlahlandlela, uwoyela ovikelayo, i-flange, nebhola lokucindezela.

Ngesikhathi sokusebenza kwe-high-voltage bushing, i-insulation eyinhloko kufanele imelane ne-voltage ephezulu, futhi ingxenye ye-conductive kufanele ibe namandla amakhulu.Amaphutha amakhulu ukuxhumeka okungalungile kwezixhumi zikagesi zangaphakathi nangaphandle, umswakama kanye nokuwohloka kwe-insulation ye-bushing, ukuntuleka kwamafutha e-bushing, ukukhishwa kwengxenye ye-capacitor core kanye nokukhishwa kwesikrini sokugcina phansi, njll.

I-transformer bushing iyithuluzi lokuphuma elihola intambo yamandla kagesi aphezulu ye-transformer ejikajikayo iye ngaphandle kwethangi likawoyela, futhi isebenza njengengxenye yokweseka kanye nokufakwa komhlabathi.Ngesikhathi sokusebenza kwe-transformer, umthamo wamanje udlula isikhathi eside, futhi i-short-circuit current idlula lapho isifunda esifushane senzeka ngaphandle kwe-transformer.

Ngakho-ke, i-transformer bushing inezidingo ezilandelayo:

Kufanele ibe namandla kagesi acacisiwe kanye namandla anele okusebenza;

Kumelwe ibe nokuzinza okuhle kokushisa futhi ikwazi ukumelana nokushisa okuphazima kweso lapho i-short-circuited;mincane ngomumo, incane ngobuningi, futhi inhle ekusebenzeni kokuvala.

Ukwahlukanisa

Ama-high-voltage bushings angahlukaniswa abe ama-bushings agcwele amafutha kanye nama-capacitive bushings.

Ikhebulaiphephaku-bushing egcwele amafutha kufana nepuleti yokulinganisa ku-capacitive bushing.I-capacitor core ku-capacitive bushing iwuchungechunge lwe-coaxial cylindrical capacitors, futhi ku-bushing egcwele amafutha, i-dielectric constant of the insulating paper iphakeme kunaleyo yamafutha, enganciphisa amandla ensimu lapho.

Izihlahla ezigcwele uwoyela zingahlukaniswa zibe igebe elilodwa likawoyela kanye nezikhala ezinamafutha amaningi, kanti ama-capacitive bushings angahlukaniswa abe ama-gummed nama-oiled paper bushings.

Imikhono isetshenziswa lapho amakhondaktha aphethe manje kudingeka adlule ezivalekile zensimbi noma ezindongeni ngamakhono ahlukene.Ngokwalesi senzakalo esisebenzayo, ama-bushings angahlukaniswa abe ama-transformer bushings, ama-bushings okushintsha noma izinto zikagesi ezihlanganisiwe, kanye nezindonga zodonga.Kulolu hlelo lwe-electrode "plug-in", inkambu kagesi igxilwe kakhulu emaphethelweni e-electrode yangaphandle (njenge-flange ephakathi kwe-bushing), lapho ukukhishwa kuvame ukuqala khona.

Ukusetshenziswa kanye nezici ze-casing

Ama-high-voltage bushings asetshenziselwa ama-conductor anamandla amakhulu ukuze adlule kuma-partitions anamandla ahlukene (njengezindonga nama-casings ensimbi emishini kagesi) ukuze afake futhi asekele.Ngenxa yokusabalalisa okungalingani kwenkundla kagesi e-bushing, ikakhulukazi insimu kagesi egxilile emaphethelweni e-flange ephakathi, kulula ukubangela ukukhishwa kwe-surface slipping.Ukwakheka kwangaphakathi kwe-insulation ye-bushing enezinga eliphezulu le-voltage kuyinkimbinkimbi, ngokuvamile kusetshenziswa izinto zokuvikela ezihlanganisiwe, futhi kunezinkinga ezifana nokukhipha ingxenye.Ngakho-ke, ukuhlolwa nokuhlolwa kwe-casing kumele kuqiniswe.