Ngokuthuthuka okuqhubekayo kwegridi yamandla e-China kanye nezinga lokuhlala kwabantu emadolobheni likhuphuka, ohlelweni lokwakhiwa kwegridi yamandla ekhebula elingaphansi kancane kancane kushintsha izintambo zokudlulisela ezihamba phezulu, kanye nokuthuthuka kokuya emadolobheni, ubude obuphelele bekhebula buzokhula unyaka nonyaka, kanjani ukuthuthukisa ukuthembeka kokuphakelwa kwamandla kalayini wekhebula, kanye nokuqinisekisa ukusebenza okuphephile nokuzinzile kwesistimu yamandla, kanye nokunciphisa ukulahlekelwa kwamandla nezinsiza zempahla yabasebenzi, Sekuyisihloko esibalulekile sokusebenza kwentambo yezintambo nokuphathwa kokulungiswa.
Ukusetshenziswa kweShayina okwamanje kwezintambo zamandla ezinkulu eziphambanayo ezingu-35K V kanye ne-66K V, 110K V kanye nezinga le-voltage engaphezulu kwezintambo zamandla kuyikhebula eliwumgogodla owodwa, ishethi yensimbi yensimbi ingxenye eyodwa yokuxhumana kwezigaba ezintathu nokuxhumeka phansi, kwesinye isiphetho. ayixhunyiwe phansi, lapho igagasi lombani noma i-voltage yangaphakathi eduze nokugeleza kwe-cable core, i-Cable metal sheath ungrounded end izovela into enomthelela omkhulu we-overvoltage, noma lapho kwenzeka ingozi yesifunda esifushane lapho i-current igeleza phakathi kwentambo core, isiphetho esingagxiliwe se-sheath sizophinde sivele isenzeko se-overvoltage yamandla aphezulu.Kulesi simo esingenhla, i-voltage ingase idlule ngokuqondile ezintweni zokufakelwa kwekhebula langaphandle, okuholela ephutheni elinamaphuzu amaningi lokumisa ikhebula lensimbi, elithinta kabi ukusebenza okuvamile kwekhebula lamandla futhi linciphise kakhulu impilo yenkonzo yekhebula.Ngakho-ke, ngokwezinga lamanje lemboni yamandla kagesi engu-DL/T401-2002 “Umhlahlandlela Wokukhetha Ikhebula Lamandla Amandla Kagesi aphezulu”, isivikelo seshevu yekhebula kufanele sisetshenziswe ukukhawulela kangcono i-voltage yokungeniswa kanye nokukhiqizwa kwe-fault overvoltage emgodleni wensimbi wekhebula lamandla.
Kuhlelo lwamanje lokudlulisa i-ac oluhlanganisa ikhebula eliwumgogodla owodwa e-China, isihlangu sensimbi sekhebula lamandla kufanele simiswe phansi.Enqubweni yokwakhiwa kwebanga elide lekhebula lamandla eliwumgogodla owodwa, ulayini wekhebula uzokwakhiwa ngezigaba eziningi, futhi izendlalelo zokuvikela insimbi zizoxhunywa ngokuphambana.Ngesikhathi esifanayo, izendlalelo ezivikela insimbi zekhebula lezigaba ezintathu zizoguqulwa ngokuqhubekayo ukuze kuzuzwe isamba se-vector engaba khona yezendlalelo ezivikela insimbi ezilinganayo zekhebula lezigaba ezintathu ukuze zibe uziro.Ibhokisi lesisekelo elixhunywe ngokuphambana liyindlela ephumelelayo yokuvikela isisekelo sokuxazulula izinkinga ezingenhla.
Ibhokisi lesisekelo sokuvikela i-cable sheath cross interconnection protection luhlobo lwedivayisi yokumisa ikhebula emgodleni, inhloso ebaluleke kakhulu okuwukulawula ngokuphumelelayo ithonya le-voltage ye-inductive kanye ne-fault overvoltage emgodleni wensimbi yekhebula, nokunciphisa izinkinga zokujikeleza emgodleni.Iziphetho ezimbili zesembozo sensimbi yekhebula zihlukaniswe zibe isisekelo sokuzivikela kanye nesisekelo esiqondile.Kodwa-ke, lapho intambo yekhebula ilide ngokuqhathaniswa, ikhava yekhebula kufanele ihlukaniswe izigaba ezintathu zokuhlanganisana kanye nokubeka phansi okusebenzayo ngemva kokuxhuma okuphambene nokudlula kudivayisi yokuvikela.
Njengamanje, kunezindlela ezimbili eziyinhloko zokufaka ibhokisi lesisekelo sokuvikela i-cable sheath cross-interconnection boxing.Indlela yokuqala iwukusetha ibhokisi eliphansi lokufaka ngokuzimele phansi eduze komthombo ophakathi nendawo, ukuhola intambo yaphansi yelunga eliphakathi nendawo lekhebula ebhokisini eliphansi ukuze kufakwe izintambo, futhi ufake igobolondo lokuvikela kanye nebha yokuvikela ngaphandle kwebhokisi eliphansi.Le ndlela yokufaka ingaba manzi futhi ingenawo umswakama, izisebenzi ezisebenza kahle nezokulungisa nganoma yisiphi isikhathi ukuze uvule ukusebenza kwebhokisi eliphansi, kodwa ngenxa yokuthi ikhebula lingcwatshwa ezinhlangothini zombili zemigwaqo yedolobha, ibhokisi eliphansi kanye nebha yokuvikela ngemva kokuvela. sikhulu futhi sifakwe phansi, kulula ukuvinjwa ku-facade ngabathengisi abaseduze noma izakhamuzi ezihlala abantu abaphikisayo kanye nezithiyo.
(Njengoba kuboniswe ku-FIG. 1) Indlela yesibili iwukufaka ibhokisi lesisekelo endaweni ehlangene kahle lapho indawo efanelekile ingatholakali phansi eduze nomthombo ohlangene ophakathi wokufakwa okuzimele (noma ukuvinjelwa izici zangaphandle).Kodwa ngenxa yokuthi akukho ukusebenza kahle kokuvalwa kwamanzi okungenamanzi kwebhokisi eliphansi, iningi lebhokisi eliphansi elifakwe emthonjeni ekusebenzeni kwesikhathi esithile lizothinteka umswakama ngamadigri ahlukene, okuholela ekutheni ucingo oluphansi nezinye izingxenye zensimbi ngaphakathi. ukugqwala kwebhokisi, umkhuhlane ngisho nokuphuka kwe-brittle;Futhi ngenxa yokuthi ifakwe phakathi kahle, lapho kudingekile ukuvula ibhokisi lomhlabathi ukuze lisebenze, kuyadingeka ukuvula ikhava eliphakathi kahle kuqala.Isembozo somgodi sikhulu futhi kunzima ukusivula, okuvame ukudinga inani elithile lamandla omuntu futhi kubambezele isikhathi sokusebenza.
Isikhathi sokuthumela: Jul-07-2022
