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 inkulu, i-OPGW optical cables ene-cross-sections enkulu isetyenziswa 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 imizimba emininzi yokumisa isetyenziselwa 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.