Nekuenderera mberi kwekusimudzira kwegidhi remagetsi reChina uye danho rekukura kwemaguta richikwira, mukuvakwa kwegetsi remagetsi epasi pevhu tambo iri kutsiva tambo dzepamusoro, pamwe nekufambira mberi kwemaguta, kureba kwetambo kuchawedzera gore negore, sei. kuvandudza tambo yemagetsi emagetsi kuvimbika, uye kuvimbisa kushanda kwakachengeteka uye kwakagadzikana kwesimba system, uye kuderedza kurasikirwa kwemagetsi uye manpower zvinhu zviwanikwa, Yakave yakakosha musoro wetambo tambo yekushanda uye kugadzirisa manejimendi.
Kushandiswa kweChina ikozvino kwe35K V hombe-chikamu tambo dzemagetsi uye 66K V, 110K V uye pamusoro pevoltage level yetambo dzemagetsi i-single-core tambo, tambo yesimbi sheath imwe magumo etatu-chikamu chekubatanidza uye kubatanidza pasi, imwe magumo. haina kubatanidzwa pasi, kana mheni wave kana yemukati voltage padivi petambo yepakati inoyerera, Cable simbi sheath isina kuvharwa magumo inozoonekwa yakakwira kukanganisa overvoltage chiitiko, kana iyo tsaona yepfupi-yedunhu tsaona ikaitika kana yazvino ichiyerera kuburikidza netambo yepakati, iyo sheath isina kuvhurika magumo ichaonekwawo yakakwira simba frequency induction overvoltage phenomenon.Mumamiriro ezvinhu ari pamusoro apa, magetsi anogona kupfuura nepakati pemidziyo yekudzivirira yetambo yekunze sheath, zvichikonzera kukanganisa kwakawanda kwetambo yesimbi sheath, iyo inokanganisa zvakanyanya kushanda kwakajairwa kwetambo yemagetsi uye kunyange kudzikisa zvakanyanya hupenyu hwesevhisi tambo.Naizvozvo, zvinoenderana neazvino magetsi emagetsi indasitiri chiyero DL/T401-2002 “Guidesi Yekusarudzwa kweyakakwira voltage Power Cable”, tambo sheath inodzivirira inofanira kushandiswa kudzikamisa induction voltage uye kukanganisa overvoltage chizvarwa pane simbi sheath yemagetsi tambo.
Mune yazvino ac transmission system ine imwechete yepakati tambo muChina, simbi shield yemagetsi tambo inofanirwa kudzikwa.Muchigadziro chekugadzirisa kureba kwetambo ye-single-core power cable, mutsara wetambo uchavakwa muzvikamu zvakawanda, uye zvidziviriro zvesimbi zvidziviriro zvichave zvakabatanidzwa kune mumwe nemumwe.Panguva imwecheteyo, simbi inodzivirira mitsara yetatu-chikamu tambo icharamba ichichinjika kuti iwane huwandu hweinogona kuitika vector ye symmetrical metal shielding layers yetatu-phase tambo kuti iite zero.Muchinjikwa-yakabatana pasi bhokisi inzira inoshanda yekudzivirira yepasi kugadzirisa matambudziko ari pamusoro.
Cable sheath cross interconnection protection grounding box imhando yetambo sheath grounding device, iyo inonyanya kukosha chinangwa ndeye kudzora zvinobudirira pesvedzero ye inductive voltage uye kukanganisa overvoltage patambo yesimbi sheath, uye kuderedza kutenderera kwematambudziko musheath.Migumo miviri yevhavha yesimbi yetambo yakakamurwa kuva inodzivirira pasi uye yakananga pasi.Nekudaro, kana tambo yetambo yakarebesa, chivharo chetambo chinofanirwa kukamurwa kuita zvikamu zvitatu zvekuvharisana uye kudzika kwakasimba mushure mekubatanidza-kuyambuka uye kupfuura nepakati pemudziyo wekudzivirira.
Parizvino, kune nzira mbiri dzekuisa dzekutumira tambo sheath cross-interconnection dziviriro yepasi bhokisi.Nzira yekutanga ndeyekumisa bhokisi rekugadzika rekugadzika rakazvimiririra pasi pedyo nepakati pekubatana zvakanaka, tungamira waya yepasi yetambo yepakati yekubatanidza kune bhokisi rekuisa wiring, uye kuisa ganda rekudzivirira uye bhari rekudzivirira kunze kwebhokisi repasi.Iyi nzira yekuisa inogona kusapinda mvura uye kusanyorova, kushanda kwakaringana uye kuchengetedza vashandi chero nguva kuvhura pasi bhokisi kushanda, asi nekuti tambo yakavigwa pamativi ese emigwagwa yeguta, bhokisi repasi uye bhari rekudzivirira mushure mekuonekwa. yakakura uye yakaiswa pasi, iri nyore kuvharika kune facade nevatengesi vepedyo kana vagari vanogara veanopikisa uye anovhiringidza.
(Sezvinoratidzwa muFIG. 1) Nzira yechipiri ndeyekuisa bhokisi rekuisa pasi muchikamu chepakati zvakanaka apo nzvimbo yakakodzera haigoni kuwanikwa pasi pedyo nepakati pepakati zvakanaka yekuisa yakazvimirira (kana kuvharwa nekunze kwekunze).Asi nekuda kwekuti hapana kunaka kwekuvhara kwemvura kuvharwa kwebhokisi repasi, yakawanda yebhokisi rekugadzika rakaiswa mutsime mukushanda kwenguva yakati richakanganiswa nehunyoro mumadhigirii akasiyana, zvichikonzera waya yepasi uye zvimwe zvikamu zvesimbi mukati. bhokisi ngura, fivha uye kunyange brittle kuputsika;Uye nokuti yakaiswa pakati zvakanaka, kana zvakakodzera kuvhura pasi bhokisi kushanda, zvinokosha kuvhura chifukidzo chepakati zvakanaka kutanga.Chifukidzo chegomba chakakura uye chakaoma kuvhura, izvo zvinowanzoda huwandu hwesimba remunhu uye inononoka nguva yekushanda.
Nguva yekutumira: Jul-07-2022
