Namuhla, i-GL ikhuluma ngendlela yokuthuthukisa izilinganiso ezivamile ze-OPGW cable thermal stability:
1. Indlela ye-Shunt line
Intengo yeIkhebula le-OPGWiphezulu kakhulu, futhi akukhona ukonga ukumane ukwandise ingxenye enqamulayo ukuze ithwale i-short-circuit current.Ivamise ukusetshenziselwa ukusetha intambo yokuvikela umbani ehambisana nekhebula yokubona ye-OPGW ukuze kuncishiswe ukusebenza kwentambo yokubona ye-OPGW.
Ukukhethwa komugqa we-shunt kufanele kuhlangabezane:
a.Kukhona i-impedance ephansi ngokwanele yokwenza ukwehla kwamanje kwe-OPGW ngaphansi kwevelu evumelekile;
b.Ingakwazi ukudlulisa umthamo wamanje omkhulu ngokwanele;
c.Ngenkathi uhlangabezana nezidingo zokuvikela umbani, kufanele kube nesici sokuphepha samandla esanele.
Kufanele futhi kuqashelwe ukuthi nakuba ukumelana komugqa we-shunt kungancishiswa kakhulu, ukusabela kwayo kwe-inductive kwehla kancane, ngakho indima yomugqa we-shunt inomkhawulo othile;umugqa we-shunt ungasekelwe esimweni samanje se-short-circuit ezungeze umugqa Ukukhetha kwe-Sectional, kodwa ekushintsheni komugqa we-shunt ukushintsha isigaba semodeli, uma izigaba ezimbili zinomehluko omkhulu, okwamanje kuzosatshalaliswa ku-OPGW. ikhebula, elizokwenza ukuthi ikhebula le-OPGW likhule ngokuzumayo.Ngakho-ke, i-cross-section yomugqa we-shunt kufanele ihlolwe ngokuphindaphindiwe.
2. Ukusetshenziswa okufanayo kwezintambo ze-OPGW zokucaciswa okubili
Olayini abade, ngenxa yombane omkhulu wesekethe emfishane engxenyeni yokuphuma esiteshini, kufanele kusetshenziswe intambo yokubona ye-OPGW ebanzi yesigaba esiphambanayo;ulayini kude nesiteshi esincane usebenzisa intambo yokubona ye-OPGW yesigaba esiphambanayo.Izinhlobo ezimbili zemigqa ye-shunt kufanele zicatshangelwe lapho kukhethwa izintambo ezimbili ze-OPGW optical.
3. Indlela yokuguqula engaphansi komhlaba
Xhuma idivayisi yaphansi yombhoshongo wetheminali kanye negridi yaphansi yesiteshi esincane ngezinsimbi eziningana eziyindilinga ezineziphambano ezifanele, ukuze ingxenye yamanje ye-short-circuit current ingene esiteshini esingaphansi komhlaba, enganciphisa kakhulu amandla amanje e-OPGW optical. ikhebula.
4. Indlela ehambisanayo yemigqa yokuvikela imibani yezifunda eziningi
Xhuma izisetshenziswa zaphansi zamatheminali ambalwa ukuze wenze ukugeleza kwamanje kwesiyingi esifushane kungene esiteshini esiseduze kolayini wokuvikela umbani onamaluphu amaningi, ukuze umsinga oyisekhethi eyodwa unciphe kakhulu.Uma ukuzinza okushisayo kwekhebula le-OPGW lesibili kungathembeki, idivayisi yokumisa phansi yombhoshongo wesisekelo sesibili ingaxhunywa, njalonjalo.Kodwa kufanele kuqashelwe ukuthi ukuvikelwa kokulandelana kwe-relay zero kufanele kucatshangelwe lapho kuxhunywa imibhoshongo eminingi.