Kev ntsuam xyuas qhov sib piv ntawm qhov hloov pauv yog qhov tseem ceeb hauv kev sim ntsuas hauv kev xa khoom, kev ntsuas kev tiv thaiv thiab kev kuaj xyuas txhaum ntawm lub zog hloov hluav taws xob. Hauv qab no, kuv yuav piav qhia meej txog nws txoj cai, lub hom phiaj, txoj kev, cov qauv thiab kev ceev faj rau koj.
Xeem lub hom phiaj
Kev pov thawj ntawm tus nqi tsim: Txheeb xyuas seb qhov kev hloov pauv tiag tiag puas zoo ib yam nrog tus nqi nominal cim ntawm daim ntawv teev npe.
Txiav txim siab txoj haujlwm ntawm tus kais hloov pauv: Paub meej tias tus kais hloov pauv puas tau teeb tsa kom raug thiab seb nws puas tau qhia txoj haujlwm npaj.
Txheeb xyuas qhov sib piv ntawm winding: Xyuas seb puas muaj qhov tsis raug xws li inter- winding short circuits, incorrect connections, or breaks wires in windings. Inter- winding luv circuits yuav ua rau cov theem txawv txav - mus rau -phase ratios.
Ntsuas peb -theem tshuav nyiaj li cas: Txheeb xyuas seb cov theem piv ntawm peb-theem transformer puas sib npaug, uas yuav pab txheeb xyuas cov kev sib txuas sab hauv lossis cov teeb meem kev sib txuas.
Rau kev siv rau lwm qhov kev sim: Cov txiaj ntsig kev hloov pauv hloov pauv tau ua ib qho tseem ceeb siv hauv paus rau kev sim tom ntej xws li winding DC resistance test thiab tsis muaj -load poob test.
Cov qauv ntsuas thiab ntsuas qhov tshwm sim
Lub hauv paus tseem ceeb yog Tuam Tshoj Lub Tebchaws Hluav Taws Xob Hluav Taws Xob Kev Lag Luam Tus Qauv DL / T 596-2021 "Kev Tiv Thaiv Kev Ntsuas Hluav Taws Xob rau Cov Khoom Siv Hluav Taws Xob" thiab GB 50150-2016 "Txoj Cai rau Kev Tshawb Fawb Cov Khoom Siv Hluav Taws Xob hauv Cov Hluav Taws Xob Hluav Taws Xob".
Transformer Ratio thiab Grouping Tester
Cov ntsiab lus tseem ceeb ntawm kev txiav txim:
Ratio yuam kev:
Rau tag nrho cov kais dej, qhov ntsuas kev hloov pauv yuav tsum nyob rau hauv qhov tso cai ntawm ± 0.5% (rau transformers mus txog 35kV) lossis ± 0.25% (rau transformers saum toj 35kV) piv rau tus nqi cim.
Rau cov iav hloov pauv, nws yuav tsum tsis txhob muaj qhov sib txawv tseem ceeb piv nrog cov ntaub ntawv kuaj lub Hoobkas.
Peb -theem tshuav nyiaj li cas: Cov kev hloov pauv ntawm txhua theem ntawm tib lub kais dej yuav tsum yog tib yam, thiab qhov sib txawv yuav tsum tsis txhob loj dhau.
Theem lub kaum sab xis: Lub kaum sab xis ntsuas yuav tsum ua raws li lub kaum sab xis sib txuas nrog cov pab pawg sib txuas uas tau cim rau ntawm daim ntawv hloov pauv (piv txwv li, Yd11 sib raug rau 30 degree, Yy0 sib raug rau 0 degree).
Qhov sib piv transformer thiab pab pawg hom tester yog ib qho cuab yeej nqa tau yooj yim uas sib koom ua ke ntawm lub teeb liab, qhov siab - ntsuas qhov ntsuas qhov tseeb thiab qhov ntsuas kev ntsuas ntse. Nws tuaj yeem siv qhov ntsuas hluav taws xob, ib txhij ntsuas qhov voltage amplitude thiab theem kev sib raug zoo ntawm qhov siab -voltage thiab qis-voltage sab ntawm lub transformer, thiab txiav txim siab qhov sib piv, piv txwv, kev sib txuas pab pawg hom los ntawm kev tsim- hauv microprocessor, thiab txiav txim siab seb cov txiaj ntsig tau tsim nyog.
Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm qhov ntsuas yog ua raws li kev ntsuas synchronous thiab meej ntawm voltage amplitude thiab theem.
Daim ntawv thov teeb liab: Ib qho cuab yeej sab hauv tsim kom muaj qhov tsawg- zaus (xws li 50Hz / 60Hz) thiab qis-voltage (feem ntau ntau volts mus rau ntau kaum ntawm volts) peb-theem lossis ib zaug-phase kuaj teeb liab, uas yog siv rau qhov siab -voltage winding ntawm lub transformer
Synchronous sampling: Lub siab -precision ADC (analog-rau-digital converter) ntawm lub ntsuas ntsuas synchronously kuaj cov voltage waveforms nyob rau siab-voltage sab thiab qis-voltage sab.
Digital Analysis:
Kev suav cov amplitude: Los ntawm algorithms xws li Fourier tsom xam, qhov muaj txiaj ntsig zoo ntawm txhua theem voltage yog xam.
Phase xam: xam cov theem sib txawv ntawm cov kab sib txuas voltages ntawm siab -voltage sab thiab qis-voltage sab (piv txwv li, AB thiab ab).
Logical kev xav:
Qhov sib piv: Nws tau los ntawm kev faib cov txiaj ntsig zoo ntawm cov kab hluav taws xob sib txuas (lossis theem voltages) ntawm siab -voltage sab los ntawm cov nyob rau qis -voltage sab.
Kev sib txuas pab pawg: Nws raug txiav txim raws li qhov ntsuas theem sib txawv. Cov txheej txheem kev sib txuas ntawm cov hluav taws xob hloov hluav taws xob muaj cov theem sib txawv uas yog qhov sib npaug ntawm 30 degrees.
Piv txwv li: Thaum lub sij hawm sib txawv yog 0℃los yog 360℃→ Cov pab pawg neeg yog 0 (Yy0, Dd0)
Theem txawv ntawm 30℃→ Pab pawg naj npawb 1
...
Qhov sib txawv ntawm 330℃→ Pab pawg neeg yog 11 (Yd11, Dyn11)
Qhov sib piv transformer thiab pab pawg hom tester yog "cov cuab yeej muaj zog" rau cov neeg ua haujlwm kuaj fais fab. Nws ua rau qhov kev sim nyuaj thiab pheej hmoo muaj kev nyab xeeb, yooj yim, nrawm thiab ua haujlwm siab. Nws cov txiaj ntsig tseem ceeb tsis yog tsuas yog ntsuas qhov sib piv, tab sis kuj tseem nyob rau hauv nws qhov kev ntsuas theem meej thiab cov pab pawg tsis siv neeg hom kev ntxub ntxaug, uas yog qhov tseem ceeb rau kev lees txais cov hloov pauv tshiab, kev txheeb xyuas tom qab rov qab windings, thiab kuaj xyuas qhov txhaum. Mastering nws cov hauv paus ntsiab lus thiab cov qauv kev ua haujlwm yog ib qho txuj ci tseem ceeb rau cov neeg ua haujlwm kuaj hluav taws xob.
