Ikhebula elivikelayo linamagama amabili avikelayo, njengoba igama libonisa ukuthi ikhebula lokudlulisela elinokumelana nokuphazamiseka kozibuthe kwangaphandle elakhiwe ungqimba oluvikelayo. Okubizwa ngokuthi "ukuvikela" esakhiweni sekhebula futhi kuyisilinganiso sokuthuthukisa ukusatshalaliswa kwamasimu kagesi. I-conductor yekhebula yenziwe ngezintambo eziningi zocingo, okulula ukwenza igebe lomoya phakathi kwayo kanye nongqimba lwe-insulation, futhi indawo ye-conductor ayibushelelezi, okuzobangela ukugxila kwensimu kagesi.
1. Isendlalelo sokuvikela ikhebula
(1). Engeza isendlalelo esivikelayo se-semi-conductive material ebusweni bekhondakta, elingana ne-conductor evikelekile futhi ethintana kahle ne-insulation layer, ukuze ugweme ukukhipha ingxenye phakathi kwe-conductor kanye nongqimba lokufakelwa. Lolu ngqimba lokuvikela lwaziwa nangokuthi isendlalelo esivikelayo sangaphakathi. Kungase futhi kube nezikhala ekuxhumaneni phakathi kwendawo yokufaka i-insulation kanye ne-sheath, futhi lapho ikhebula ligobile, i-oil-paper cable insulation surface kulula ukubangela ukuqhekeka, okuyizici ezibangela ukukhipha ingxenye.
(2). Engeza isendlalelo esivikelayo se-semi-conductive material ebusweni bongqimba bokufakelwa, esinokuthintana kahle nongqimba oluvikelayo oluvikelekile namandla alinganayo nomgodla wensimbi, ukuze ugweme ukukhipha ingxenye phakathi kongqimba olufakwa ngaphakathi kanye nomgodla.
Ukuze kuqhutshwe umgogodla ngokulinganayo futhi kugqume inkambu kagesi, izintambo zamandla kagesi angu-6kV nangaphezulu aphakathi nendawo naphezulu ngokuvamile zinesendlalelo se-conductor shield kanye nongqimba lwehawu elivikelayo, kanti ezinye izintambo ezinamandla kagesi aphansi azinalo isendlalelo sehawu. Kunezinhlobo ezimbili zezendlalelo ezivikelayo: i-semi-conductive shielding kanye ne-metal shielding.
2. Ikhebula elivikelekile
Ungqimba oluvikelayo lwale khebula ngokuvamile lulukiwe lwaba yinethiwekhi yezintambo zensimbi noma ifilimu yensimbi, futhi kunezindlela ezihlukahlukene ezihlukene zokuvikela okukodwa nokuvikela okuningi. Isihlangu esisodwa sisho inethi yesihlangu esisodwa noma ifilimu yesihlangu, engasonga intambo eyodwa noma ngaphezulu. Imodi yokuvikela okuningi iwubuningi bamanethiwekhi avikelayo, futhi ifilimu evikelayo ikukhebula eyodwa. Ezinye zisetshenziselwa ukuhlukanisa ukuphazamiseka kazibuthe phakathi kwezintambo, kanti ezinye ziyizivikelo ezikabili ezisetshenziselwa ukuqinisa umphumela wokuvikela. Indlela yokuvikela ukubeka phansi isendlalelo esivikelayo ukuze kuhlukaniswe amandla kagesi okuphazamisayo ocingo lwangaphandle.
(1) Isivikelo se-semi-conductive
Isendlalelo se-semi-conductive sesihlangu sivame ukuhlelwa endaweni engaphandle ye-conductor wire core kanye nengaphandle lesendlalelo se-insulating, esibizwa ngokuthi ungqimba lwesihlangu se-semi-conductive yangaphakathi kanye nesendlalelo sesihlangu se-semi-conductive sangaphandle ngokulandelanayo. Ungqimba oluvikelayo lwe-semi-conductive lwakhiwe ngento e-semi-conductive ene-resistivity ephansi kakhulu kanye nogqinsi oluncane. Isendlalelo sokuvikela esingaphakathi kwe-semi-conductive siklanyelwe ukufanisa inkambu kagesi endaweni engaphandle ye-conductor core futhi igweme ukukhipha ingxenye ye-conductor kanye nokufakwa kwe-insulation ngenxa yobuso obungalingani bomqhubi kanye negebe lomoya elibangelwa umgogodla oboshiwe. Isendlalelo esingaphandle se-semi-conductive shielding sixhumene kahle nengaphandle lesendlalelo sokufakelwa, futhi silingana nomgodla wensimbi ukuze kugwenywe ukukhipha ingxenye yomgodla wensimbi ngenxa yokukhubazeka okufana nokuqhekeka kwendawo yokufaka ikhebula.
(2) Ukuvikela insimbi
Ezintamboni zamandla kagesi aphakathi nendawo naphansi ngaphandle kwamabhantshi ensimbi, ungqimba lwesihlangu sensimbi kufanele lwengezwe ngaphezu kongqimba lwesihlangu se-semi-conductive. Isendlalelo sesihlangu sensimbi ngokuvamile sisongwetape yethusinoma ucingo lwethusi, oludlala ngokuyinhloko indima yokuvikela insimu kagesi.
Ngenxa yokuthi amandla akhona ngekhebula lamandla makhulu uma kuqhathaniswa, indawo kazibuthe izokhiqizwa endaweni yamanje, ukuze ingaphazamisi ezinye izingxenye, ngakho-ke isendlalelo esivikelayo singavikela le nkambu kazibuthe kukhebula. Ngaphezu kwalokho, isendlalelo sokuvikela ikhebula singadlala indima ethile ekuvikelweni komhlaba. Uma i-cable core ilimele, i-current evuzayo ingageleza ngokugeleza kwe-laminar evikelayo, njengenethiwekhi ephansi, ukudlala indima ekuvikelweni kokuphepha. Kuyabonakala ukuthi indima yongqimba lwesihlangu sekhebula isenkulu kakhulu.
Isikhathi sokuthumela: Sep-19-2024