Amanyathelo okusombulula ingxaki yozinzo lwe-thermalOPGW intambo yokubona
1. Ukwandisa icandelo lomqhubi wombane
Ukuba i-current ayidluli kakhulu, i-strand yensimbi inokunyuswa ngobukhulu obunye.Ukuba idlula kakhulu, kuyacetyiswa ukuba kusetyenziswe ucingo olufanelekileyo lokukhusela umbane (njenge-aluminium-clad steel stranded wire).Ngokuqhelekileyo, akuyimfuneko ukutshintsha umgca wonke, kuphela icandelo lomgca ongena kunye nokuphuma kwisikhululo samandla unokutshintshwa, kwaye ubude bunqunywe ngokubala.
2. Ukwahlukaniswa kunye nokugqunyelelwa kwe-OPGW intambo yokukhanya kwentambo yombane kwiziteli ezingenayo neziphumayo.
Ubuninzi bangoku kumgca wokukhusela umbane kumgca ongenayo kunye ophumayo.Ukuba umtya we-insulators wongezwa kumgca wokukhusela umbane kule nqanaba, okwangoku akusayi kukwazi ukungena kwi-substation.Ngeli xesha, ubuninzi bangoku buvela kwisixhobo sesibini.Nangona i-short-circuit yangoku itshintsha kancinane kakhulu, ukuxhathisa kwesiseko kwandisa kakhulu, ngoko ke umgca wokukhusela umbane uyancipha ngakumbi.Imiba emibini kufuneka inikwe ingqwalasela xa kuthathwa lo mlinganiselo.Olunye lukhetho lokuxhatshazwa koxinzelelo lwentambo ye-insulator, kwaye enye ihambelana ngokufanelekileyo nokuxhatshazwa komhlaba kwinqaba nganye ukunciphisa okwangoku kumgca wokukhusela umbane.
3. Sebenzisa umgca we-shunt ukunciphisa umbane we-OPGW optical cable
Iindleko ze-OPGW intambo ye-optical cable iphezulu kakhulu, kwaye ayinayo imali yokwandisa nje i-cross-section ye-OPGW intambo yokukhanya ukuze ithwale i-short-circuit current.Ukuba omnye umgca wokukhusela umbane usebenzisa i-conductor elungileyo ene-impedance ephantsi kakhulu, inokudlala indima enhle ye-shunt kunye nokunciphisa i-current ye-OPGW optical cable.Ukukhethwa komgca we-shunt kufuneka kuhlangabezane nezi meko zilandelayo: i-impedance iphantsi ngokwaneleyo ukunciphisa ixabiso langoku le-OPGW optical cable ngaphantsi kwexabiso elivumelekileyo;umgca we-shunt ngokwawo kufuneka ube nomthamo omkhulu owaneleyo ovumelekileyo;umgca we-shunt kufuneka uhlangabezane neemfuno zokukhusela umbane.Yiba nokhuseleko lwamandla olwaneleyo.Nangona ukuchasana komgca we-shunt kungancitshiswa kakhulu, ukusabela kwayo kwe-inductive kuncipha ngokukhawuleza, ngoko ke indima yomgca we-shunt inomda othile.Umgca we-shunt unokukhethwa kumacandelo ngokweemeko zangoku zesekethe ezimfutshane kwiindawo ezahlukeneyo zomgca, kodwa ingqalelo ekhethekileyo kufuneka ihlawulwe kwinto yokuba xa umgca we-shunt utshintsha imodeli, kuba umgca we-shunt uba mncinci, ngakumbi ngoku. isasazwe kwintambo ye-OPGW optical cable, ngoko I-current ye-OPGW ye-optical cable iya kwandisa ngokukhawuleza kakhulu, ngoko ke ukukhethwa komgca we-shunt kufuna ukubala ngokuphindaphindiweyo.
4. Khetha iinkcukacha ezimbini ze-OPGW optical cables
Ngenxa yokuba i-short-circuit current yemigca engenayo nephumayo ye-substation iyona nkulu, iintambo ze-OPGW ezibonakalayo ezinamacandelwana amakhulu zisetyenziswa apha, ngelixa iintambo ze-OPGW ezibonakalayo ezinamacandelwana amancinci zisetyenziselwa imigca engenayo nephumayo ekude. ukusuka kwisikhululo esingaphantsi.Lo mlinganiselo usebenza kuphela kwimigca emide kwaye kufuneka uthelekiswe ngokoqoqosho.Xa ukhetha iintlobo ezimbini zeentambo ze-OPGW optical, imigca emibini ye-shunt kufuneka ithathelwe ingqalelo ngexesha elinye.Kwi-intersection yemigca emibini, ingqalelo kufuneka ihlawulwe kwiinguqu ezikhawulezayo kwi-current ye-OPGW optical cable kunye nomgca wokukhusela umbane.
5. Umda wokusasaza ophantsi komhlaba
Ukuba iibhodi ezininzi zokumisa zisetyenziselwa ukudibanisa isixhobo sokumisa i-terminal tower kwigridi yokumisa ye-substation, inxalenye enkulu ye-short-circuit current iya kungena kwi-substation ukusuka emhlabeni, ukunciphisa i-current ye-optical cable ye-OPGW engenayo kwaye umqhubi wombane.Xa usebenzisa lo mlinganiselo, qhagamshelana nesebe elisebenzayo.
6. Uxhulumaniso oluhambelanayo lwemigca yokukhusela imibane emininzi
Ukuba izixhobo zokumisa iinqaba ezininzi ze-terminal zixhunyiwe, i-short-circuit current inokungena kwi-substation kunye ne-multi-circuit lightning conductor, ukwenzela ukuba i-current-circuit current incinci kakhulu.Ukuba kusekho ingxaki ngokuzinza kwe-thermal yocingo lokukhusela umbane wesibini, isixhobo sokumisa isiseko sesibini senqaba sinokudibaniswa, njalo njalo.Nangona kunjalo, kufuneka kuqatshelwe ukuba xa kukho iinqaba ezininzi ezidibeneyo, ingxaki yokukhusela i-relay zero-sequence kufuneka ifundwe.
7. Izitendi ezingenayo neziphumayo zisebenzisa iintambo ze-ADSS
Xa i-OPGW intambo ye-optical icinyiwe, kwaye i-ADSS (i-dielectric self-supporting) i-optical cable isetyenzisiweyo, ubuninzi be-short-circuit current kwi-OPGW optical cable inokuthathwa njengoluqukuqelayo kwi-substation xa isiseko sesibini senqaba. iyasilela, kwaye le yangoku iphezulu kunaleyo yenqaba yesiseko sokuqala.Isiphaluka esifutshane sangoku sincinci.Ngoko ke, xa i-ADSS intambo ye-optical isetyenziselwa ibhloko yokungena kunye nokuphuma komgca, ubuninzi be-short-circuit current current ingabalwa ngokuhambelana ne-short-circuit current ngexesha lesiphoso sesiseko sesibini senqaba ngexesha lokuhlalutya kwe-thermal ye-OPGW optical. intambo, ukwenzela ukuba iimfuno zokuzinza kwe-thermal kwintambo ye-OPGW optical ziyancipha kakhulu.
Ukuzinza kwe-thermal ye-fiber opticalucingo oluphezulu oluhlanganisiweyo (OPGW)kufuneka ithathelwe ingqalelo ngokupheleleyo kwinkqubo yokuyila kunye nokukhetha, kwaye amanyathelo ahlukeneyo kufuneka athathwe ngokwesakhiwo esithile kunye nendlela yokwenyani ye-OPGW intambo ye-optical ukuphepha umonakalo obangelwa yi-single-phase grounding short-circuit current kwi-OPGW optical cable.umonakalo, kunye nokuphucula ukuthembeka kokusebenza kwentambo ye-OPGW optical cable.