SF6 ya raws tester feem ntau yog siv los ntsuas cov dej noo hauv SF6 roj. Nws lub luag haujlwm tseem ceeb ntawm daim ntawv thov muaj xws li:
Kev ntsuas kev ua haujlwm ntawm rwb thaiv tsev: Cov dej ua rau cov tshuaj lom los ntawm - cov khoom tsim los ntawm kev decomposition ntawm SF6 nyob rau hauv qhov kev txiav txim ntawm hluav taws xob arcs, tsim corrosive acids, uas txo cov rwb thaiv tsev lub zog ntawm cov khoom siv hluav taws xob thiab tej zaum yuav ua rau tawg lossis tawg. Kev saib xyuas cov ntsiab lus dej yog qhov tseem ceeb rau kev ua kom muaj kev nyab xeeb ntawm cov khoom siv.
Kev kuaj xyuas cov khoom siv: Cov ntsiab lus noo noo yog ib qho tseem ceeb qhia txog qhov xwm txheej sab hauv ntawm SF6 cov khoom siv hluav taws xob (xws li GIS, Circuit Court breakers, thiab lwm yam). Cov dej noo ntau dhau yuav qhia tau tias:
Lub sealing qhov chaw ntawm cov cuab yeej muaj hnub nyoog.
Adsorbent saturation tsis ua hauj lwm;
Muaj cov ntsiab lus to hauv cov khoom siv.
Lub sijhawm dhau los, cov pa roj tsis tas lub cev qhuav dej thaum lub sijhawm nce nqi lossis rov ua dua.
Kev ua haujlwm thiab kev lees txais cov cuab yeej tshiab: Tom qab cov cuab yeej tau teeb tsa thiab nce siab, lossis tom qab kev txhim kho loj, cov dej noo ntawm SF6 roj yuav tsum raug ntsuas kom ntseeg tau tias nws ua tau raws li lub teb chaws cov qauv thiab cov chaw tsim khoom tshwj xeeb ua ntej nws tuaj yeem muab tso rau hauv kev ua haujlwm.
Kev tiv thaiv kev saib xyuas tsis tu ncua: Kev saib xyuas tsis tu ncua ntawm kev hloov pauv ntawm cov dej noo tuaj yeem kwv yees cov teeb meem muaj peev xwm ntawm cov cuab yeej siv, ua rau kev hloov pauv ntawm "post- kho qhov xwm txheej" mus rau "kev tiv thaiv kev tiv thaiv".
SF6 Moisture Tester
Kev ua haujlwm, kev txheeb xyuas thiab cov khoom siv noo noo txwv qhov tseem ceeb ntawm SF6 ya raws tester yog ua raws li cov qauv nruj hauv tebchaws thiab kev lag luam.
A. Cov khoom siv noo noo txwv tus qauv (Kuaj hauv paus)
GB/T 12022-2014 "Industrial Sulfur Hexafluoride": Qhia meej cov ntsiab lus ntawm cov dej noo rau cov roj SF6 tshiab (tsawg dua lossis sib npaug rau 5 ppmV lossis -49.7℃dew point).
DL/T 603-2017 "Kev Tswj Xyuas Kev Ua Haujlwm thiab Kev Tswj Xyuas Kev Ua Haujlwm rau Cov Roj"-Insulated Hlau-Cog Switchgear": Qhov no yog lub hauv paus tseem ceeb tshaj plaws rau cov khoom siv khiav haujlwm. Nws teev cov dej noo uas tso cai (hauv chav tsev ntawm ppm (V / V)) rau cov qib sib txawv thiab cov roj sib txawv (switches / non-switches) thaum ua haujlwm thiab ua haujlwm.
Piv txwv (Pom qhov tseem ceeb thaum ua haujlwm):
Gas compartments uas muaj arc decomposition khoom (xws li Circuit Court breakers): Tsawg dua los yog sib npaug rau 300 ppm
Gas Chambers yam tsis muaj arc decomposition khoom (xws li busbars, disconnect keyboards): Tsawg dua los yog sib npaug rau 500 ppm
Nco tseg: Cov nqi xa mus thiab kev lees txais yog nruj dua li qhov kev tso cai ua haujlwm.
B. Instrument Calibration Procedures (Ua kom ntseeg tau qhov tseeb ntawm cov cuab yeej)
JJG 500-2005 "Kev Tswj Xyuas Kev Ruaj Ntseg rau Electrolytic Humidity Meters": Muaj feem xyuam rau cov cuab yeej raws li txoj cai electrolytic.
JJG 826-1993 "Kev Txheeb Xyuas Cov Cai rau Capacitive Resistance Type Dew Point Hygrometer": Muaj feem xyuam rau cov cuab yeej raws li txoj cai ntawm kev ua haujlwm capacitive.
Cov kev cai no qhia txog cov xwm txheej calibration, cov khoom, cov txheej txheem thiab cov voj voog (feem ntau yog ib xyoos) rau cov cuab yeej, kom ntseeg tau qhov tseeb thiab kev ntseeg siab ntawm tus nqi sib kis.
C. Ntawm -site Test Method Standards
DL/T 506-2018 "Kev Ntsuas Method for Insulation Gas Humidity in SF6 Electrical Equipment": Cov txheej txheem kev khiav hauj lwm rau kev ntsuam xyuas ntawm qhov chaw. Nws qhia meej meej:
Test tej yam kev mob (xws li ib puag ncig kub thiab av noo)
Kuaj lub voj voog
Technical Requirements rau SF6 Moisture Tester
Standard test connectors thiab pipeline kev twb kev txuas
Cov txheej txheem ntsuas thiab ceev faj
Kev suav cov txiaj ntsig thiab hom ntawv tshaj tawm
Cov neeg ua haujlwm yuav tsum tau txais kev cob qhia thiab ua raws li cov kev cai nruj me ntsis xws li DL / T 506 thaum ua haujlwm kom ntseeg tau qhov tseeb ntawm qhov ntsuas ntsuas thiab kev nyab xeeb ntawm cov neeg ua haujlwm thiab cov khoom siv (SF6 roj thiab nws cov khoom decomposition tej zaum yuav muaj teeb meem).
