Izinyathelo zokuxazulula inkinga yokuqina kokushisa kweIntambo yokubona ye-OPGW
1. Khulisa isigaba somqhubi wombani
Uma i-current idlula kakhulu, i-strand yensimbi inganyuswa ngosayizi owodwa. Uma idlula kakhulu, kunconywa ukuthi usebenzise ucingo oluhle lokuvikela umbani (njenge-aluminium-clad steel stranded wire). Ngokuvamile, akudingekile ukushintsha umugqa wonke, kuphela isigaba somugqa ongena futhi ophuma esiteshini samandla esingashintshwa, futhi ubude bunqunywa ngokubala.
2. Ukuhlukaniswa nokufakwa kolayini wokuvikela umbani we-OPGW optical cable kumatafula angenayo naphumayo.
Umkhawulo wamanje kulayini wokuvikela umbani uselayini engenayo nephumayo. Uma uchungechunge lwama-insulators lwengezwa kulayini wokuvikela umbani kuleli zinga, owamanje ngeke ukwazi ukungena esiteshini. Ngalesi sikhathi, ubuningi bamanje buvela egiyeni lesibili. Nakuba inani lamanje le-short-circuit lamanje lishintsha kancane kakhulu, ukumelana nesisekelo kukhula kakhulu, ngakho-ke ulayini wokuvikela umbani wehla kakhulu. Izinto ezimbili okufanele zibhekwe lapho kuthathwa lesi sinyathelo. Enye iwukukhethwa kokumelana nokucindezela kwentambo ye-insulator, kanti enye iwukufaniswa okufanele kokumelana komhlabathi kombhoshongo ngamunye ukuze kuncishiswe okwamanje emgqeni wokuvikela umbani.
3. Sebenzisa ulayini we-shunt ukuze unciphise ukusebenza kwentambo yokubona ye-OPGW
Izindleko zekhebula le-OPGW optical ziphakeme uma kuqhathaniswa, futhi akunangqondo ukumane ukhuphule ingxenye ephambanayo yekhebula le-OPGW optical ukuze ithwale wamanje wesiyingi esifushane. Uma omunye ulayini wokuvikela umbani usebenzisa i-conductor enhle ene-impedance ephansi kakhulu, ingadlala indima enhle ye-shunt futhi yehlise ukusebenza kwamanje kwentambo yokubona ye-OPGW. Ukukhethwa komugqa we-shunt kufanele kuhlangabezane nemibandela elandelayo: i-impedance iphansi ngokwanele ukunciphisa inani lamanje lekhebula le-OPGW optical ngaphansi kwenani elivumelekile; umugqa we-shunt ngokwawo udinga ukuba nomthamo omkhulu ovumelekile ovumelekile; umugqa we-shunt kufanele uhlangabezane nezidingo zokuvikela umbani. Yiba nesici sokuphepha samandla esanele. Nakuba ukumelana komugqa we-shunt kungancishiswa kakhulu, ukusabela kwayo kwe-inductive kuncipha kancane, ngakho-ke indima yomugqa we-shunt inomkhawulo othile. Umugqa we-shunt ungakhethwa ezigabeni ngokuya ngezimo zamanje zesifunda esifushane ezingxenyeni ezahlukahlukene zomugqa, kodwa ukunakekelwa okukhethekile kufanele kukhokhwe eqinisweni lokuthi lapho umugqa we-shunt ushintsha imodeli, ngoba umugqa we-shunt uba mncane, wamanje kakhulu isakazwe kukhebula le-OPGW optical, ngakho I-current ye-OPGW ikhebula le-optical izokwandisa ngokuzumayo, ngakho ukukhethwa komugqa we-shunt kudinga ukubalwa okuphindaphindiwe.
4. Khetha ukucaciswa okubili kwezintambo ezibonakalayo ze-OPGW
Ngenxa yokuthi i-short-circuit current yemigqa engenayo nephumayo yesiteshi esikhulu kunazo zonke, izintambo ezibonakalayo ze-OPGW ezinezingxenye ezinkulu eziphambanayo zisetshenziswa lapha, kuyilapho izintambo ezibonakalayo ze-OPGW ezineziphambano ezincane zisetshenziselwa imigqa engenayo naphumayo ekude. kusukela esiteshini. Lesi silinganiso sisebenza kuphela emigqeni emide futhi kufanele siqhathaniswe ngokomnotho. Uma ukhetha izinhlobo ezimbili zezintambo ze-OPGW optical, imigqa emibili ye-shunt kufanele icatshangelwe ngesikhathi esisodwa. Ezimpambanweni zemigqa emibili, ukunakwa kufanele kukhokhwe ekushintsheni okungazelelwe kwekhebula le-OPGW optical kanye nomugqa wokuvikela umbani.
5. Ulayini wokusabalalisa ongaphansi komhlaba
Uma izindikimba ezimbalwa zaphansi zisetshenziswa ukuxhuma idivayisi yaphansi yombhoshongo wetheminali kugridi yaphansi yesiteshi, ingxenye enkulu yamandla ombane wesekethe emfishane izongena esiteshini isuka phansi, inciphise ukusebenza kwentambo yokubona ye-OPGW engenayo futhi umqhubi wombani. Uma usebenzisa lesi silinganiso, thintana nomnyango osebenzayo.
6. Ukuxhumana okuhambisanayo kwemigqa yokuvikela imibani yezifunda eziningi
Uma amadivaysi okumisa phansi emibhoshongo yamatheminali eminingana axhunyiwe, i-current-circuit current ingagelezela esiteshini esingaphansi komqhubi wombani oneziyingi eziningi, ukuze i-current-circuit single ibe mncane kakhulu. Uma kusekhona inkinga ngokuzinza okushisayo kocingo lokuvikela umbani wegiya lesibili, idivayisi yokumisa phansi yombhoshongo wesisekelo sesibili ingaxhunywa, njalonjalo. Kodwa-ke, kufanele kuqashelwe ukuthi uma kunemibhoshongo eminingi exhunyiwe, inkinga yokuvikelwa kokulandelana kwe-zero-relay idinga ukufundwa.
7. Izitebele zolayini ezingenayo neziphumayo zisebenzisa izintambo ezibonakalayo ze-ADSS
Uma ikhebula le-OPGW optical likhanseliwe, futhi kusetshenziswa ikhebula le-ADSS (all-dielectric self-supporting), umkhawulo wamanje we-short-circuit kukhebula le-OPGW optical ungabhekwa njengowamanje ogelezela esiteshini lapho umbhoshongo wesisekelo wesibili. yehluleka, futhi lokhu kwamanje kuphakeme kunalowo wombhoshongo wesisekelo sokuqala. Umjikelezo omfushane wamanje mncane. Ngakho-ke, lapho ikhebula le-ADSS optical lisetshenziselwa ukungena nokuphuma komugqa block, umkhawulo wamanje we-short-circuit current ungabalwa ngokuya nge-short-circuit current ngesikhathi sephutha lombhoshongo wesisekelo sesibili ngesikhathi sokuhlaziywa okushisayo kwe-OPGW optical. ikhebula, ukuze izidingo zokuzinza ezishisayo zentambo yokubona ye-OPGW zehliswe kakhulu.
Ukuzinza okushisayo kwe-fiber opticali-overhead composite ground wire (OPGW)kufanele kucatshangelwe ngokugcwele enqubweni yokuklama nokukhetha, futhi izinyathelo ezihlukene kufanele zithathwe ngokuvumelana nesakhiwo esithile kanye nendlela yangempela yekhebula le-OPGW optical ukugwema umonakalo obangelwa i-single-grounding grounding short-circuit current kukhebula le-OPGW optical. ukulimaza, futhi kuthuthukiswe ukuthembeka kokusebenza kwentambo yokubona ye-OPGW.