Kev tshawb pom ntawm cov xov hlau thiab cables yeej ib txwm yog ib feem tseem ceeb ntawm lub teb chaws tus qauv xov hlau thiab cables. Qhov siab dua qhov chaw soj ntsuam zoo hauv cov tuam txhab xaim thiab cable, qhov zoo dua ntawm cov xov hlau thiab cov cables uas tsim los ntawm cov tuam txhab thiab cov kev ntseeg siab dua. Qhov nruj dua qhov thib peb-tus neeg saib xyuas kev ua haujlwm zoo, qhov zoo dua rau kev txhim kho ntawm kev lag luam no.
1, Kev ntsuas ntawm DC tsis kam ntawm tus neeg xyuas pib
Lub hauv paus ntsiab lus ntawm cov xov hlau thiab cables feem ntau xa hluav taws xob hluav taws xob lossis hluav taws xob teeb liab. Qhov tsis kam ntawm cov hlau yog qhov taw qhia tseem ceeb ntawm nws cov hluav taws xob ua haujlwm. Qhov kev tiv thaiv ntawm cov tub ntxhais hlau nyob rau hauv qhov kev txiav txim ntawm AC voltage yog loj dua li nyob rau hauv qhov kev txiav txim ntawm DC voltage vim cov nyhuv ntawm daim tawv nqaij thiab qhov sib thooj nyhuv nto, tab sis qhov sib txawv ntawm lawv yog heev me me thaum hluav taws xob zaus yog 50Hz. Tam sim no tus txheej txheem tau teev tseg tias tsuas yog DC tsis kam lossis kev tiv thaiv ntawm cov tub ntxhais hlau tuaj yeem kuaj pom seb nws puas tshaj tus nqi teev hauv tus qauv. Los ntawm kev tshuaj xyuas no, qee qhov tsis xws luag hauv cov txheej txheem tsim khoom tuaj yeem pom, Piv txwv li, tus neeg xyuas pib tawg lossis qee cov xov hlau tawg; Qhov hla ntu ntawm tus neeg xyuas pib tsis ua raws li tus qauv; Qhov ntev ntawm cov khoom tsis raug.
2, Kev txheeb xyuas cov rwb thaiv tsev tsis kam
Lub rwb thaiv tsev tiv thaiv yog ib qho tseem ceeb qhia txog cov yam ntxwv ntawm rwb thaiv tsev ntawm cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob, uas yog ze rau lub zog hluav taws xob ntawm cov khoom, dielectric poob, thiab maj mam deterioration ntawm rwb thaiv tsev cov ntaub ntawv nyob rau hauv kev ua hauj lwm tej yam kev mob. Rau kev sib txuas lus cables, yog tias qhov rwb thaiv tsev ntawm cov kab qis dhau lawm, nws tseem yuav ua rau muaj kev cuam tshuam ntawm Circuit Court, crosstalk ntawm circuits, thiab ntev lub zog hluav taws xob xau ntawm cov xaim hluav taws xob. Yog li ntawd, cov rwb thaiv tsev tiv thaiv yuav tsum tau siab dua li tus nqi teev.
3, Kev ntsuas lub peev xwm thiab qhov poob
Thaum AC voltage siv rau cable, yuav muaj tam sim no ntws. Thaum lub amplitude thiab zaus ntawm qhov voltage yog tsau, lub capacitance tam sim no proportional rau lub capacitance (Cx) ntawm lub cable. Rau ultra-high voltage cables, tam sim no ntawm xws li capacitors yuav ncav cuag tus nqi piv rau cov rated tam sim no, uas dhau los ua ib qho tseem ceeb txwv tsis pub muaj peev xwm thiab kis tau tus mob. Yog li ntawd, lub capacitance ntawm lub cable kuj yog ib qho ntawm cov hluav taws xob kev ua tau zoo ntawm cov cable. Los ntawm kev ntsuas ntawm capacitance thiab poob qhov tseem ceeb, nws tuaj yeem pom tias cov rwb thaiv tsev cuam tshuam nrog cov dej noo, rwb thaiv tsev txheej thiab shielding txheej poob thiab lwm yam rwb thaiv tsev deterioration phenomena. Yog li ntawd, capacitance thiab TAN yog nqa tawm txawm nyob rau hauv cable manufacturing los yog cable lag luam δ Kev ntsuas ntawm.
4, Rwb thaiv tsev lub zog kuaj
Lub zog rwb thaiv tsev ntawm cov xov hlau thiab cables yog hais txog lub peev xwm ntawm cov txheej txheem insulating thiab cov ntaub ntawv insulating kom tiv taus hluav taws xob tsis muaj kev puas tsuaj. Txhawm rau txheeb xyuas cov khoom zoo ntawm cov khoom siv hlau thiab cable thiab xyuas kom muaj kev nyab xeeb ntawm cov khoom, kev ntsuas hluav taws xob rwb thaiv tsev feem ntau yuav tsum muaj rau txhua hom insulated ntawm cov xov hlau thiab cables. Kev ntsuas hluav taws xob hluav taws xob tuaj yeem muab faib ua qhov ntsuas hluav taws xob tiv thaiv thiab ntsuas kev tawg. Lub sij hawm voltage feem ntau siab tshaj qhov ntsuas ua hauj lwm voltage ntawm cov khoom kuaj. Tus nqi tshwj xeeb voltage thiab tiv taus lub sij hawm voltage yog teev nyob rau hauv cov khoom txheem. Kev ntsuas hluav taws xob tiv thaiv tuaj yeem kuaj qhov kev ntseeg tau ntawm cov khoom hauv qab ua haujlwm voltage, pom qhov tsis xws luag hauv cov rwb thaiv tsev, thiab tseem pom qee qhov tsis xws luag hauv cov txheej txheem tsim khoom.
5, Kev laus thiab kev ruaj ntseg xeem
Kev kuaj kev laus yog qhov kev ntsuam xyuas kev ruaj ntseg ntawm seb qhov kev ua tau zoo tuaj yeem ruaj khov nyob rau hauv qhov kev txiav txim ntawm kev ntxhov siab (mechanical, hluav taws xob, thermal). Thermal aging test: Ib qho yooj yim thermal aging test yog kuaj cov yam ntxwv kev laus ntawm cov khoom kuaj hauv qab qhov kev ua ntawm tshav kub. Muab cov khoom ntsuas rau hauv ib puag ncig siab dua qhov ntsuas kub ua haujlwm thiab ntawm qhov ntsuas kub, kom lub neej luv dua tuaj yeem tau txais ntawm qhov kub siab dua T.
6, Thermal stability test
Kev ntsuas thermal stability yog ntsuas qee qhov kev ntsuas kev ua tau zoo los ntsuas qhov kev ruaj ntseg ntawm rwb thaiv tsev tom qab lub cable yog rhuab los ntawm tam sim no thiab kuj muaj qee qhov voltage. Rwb thaiv tsev stability test yog muab faib ua lub sij hawm ntev stability test los yog luv-term accelerated aging test.
