SFRA Test ntawm Transformer (50/75 MVA)
SFRA: Sweep Frequency Response Analysis.
Lub Hom Phiaj: txhawm rau txheeb xyuas qhov cuam tshuam tsis zoo xws li:
Ø Winding hloov chaw.
Ø Inter tig luv.
Ø Winding thiab core ntiaj teb txhaum.
Ø Loosen, tawg clamp kev twb kev txuas.
Kev pom zoo:
1. Ua ntej thiab tom qab thauj khoom ntawm transformer.
2. Tom qab hnyav txhaum siab tam sim no txhaum ntawm transformer.
Cov khoom siv kuaj:
RBX-H SFRA tester raws li kev ntsuas ntawm lub windings yam ntxwv tsis nyob rau hauv lub
transformer, lub tester siv lub ntiaj teb no tsim lub teb chaws suab internal txhaum zaus
Kev soj ntsuam cov lus teb (FRA) txoj kev, tuaj yeem ua qhov kev txiav txim siab hauv kev hloov pauv tsis raug.
Tom qab ua tiav ntawm kev tsim thiab tsim cov transformers, coils thiab nws cov qauv sab hauv mus rau
tau kawg, yog li ntawd ib tug transformer kauj winding, yog hais tias tus voltage theem, txoj kev winding yog cov
tib yam, txhua lub coil coj cov ntsuas (Ci, Li) raug txiav txim. Yog li lub zaus domain
teb cov yam ntxwv ntawm txhua kauj kuj yuav txiav txim, ntawm cov coj peb-theem kauj
muaj qhov sib piv zaus spectrum.
Nws tshwm sim inter-tig, theem luv luv Circuit Court thaum lub sij hawm kuaj los yog kev sib tsoo thaum thauj, ua rau lub kauj
txheeb ze hloov chaw, thiab thaum lub sij hawm ua hauj lwm nyob rau hauv luv luv Circuit Court thiab txhaum tej yam kev mob vim lub
nro los ntawm cov electromagnetic, coil yog deformed, nws yuav ua rau kev faib tsis
transformer winding hloov. Yog li, influent thiab hloov cov zaus uas twb muaj lawm
transformer zaus teb feature, uas zaus teb amplitude hloov tshwm sim thiab
Resonance zaus hloov pauv, thiab lwm yam RBX-H siv rau cov qauv sab hauv ntawm kev kuaj pom 63kV ~
500kV fais fab mov transformers
Wuhan Huayi fais fab fais fab yog cov chaw tsim khoom ntawm SFRA analyzer, nws yog compact, yooj yim rau kev khiav lag luam, nrog rau kev ntsuam xyuas kev ua haujlwm.
Sweep zaus: 20Hz txog 2 MHz
Qhov tseem ceeb ntawm qhov ntau zaus:
Ø 20 Hz txog 2 KHz: Core winding inductance, nws yuav pom qhov teeb meem hauv cov tub ntxhais deformation,
core av teeb meem, shorted tig, qhib circuits, residual magnetism.
Ø 2 KHz rau 20 KHz: Cov khoom siv winding, nws yuav pom qhov teeb meem zoo li winding
zog, shunt impedance.
Ø 20 KHz rau 400 KHz: Lub ntsiab winding, nws yuav ntes deformation nrog rau hauv lub ntsiab winding thiab
tap winding.
Ø 400 KHz mus rau 2 MHz: Main winding, kais winding, & sab hauv, nws yuav ntes txav
ntawm lub ntsiab & kais windings & av impedance variation.