Thermal Failure -Overheating
Transformer losses ua kom sov:
. Core poob
. Winding tooj liab poob
. Txoj kev poob
Dielectric losses
Yog tias kev tshem tawm cov cua sov tsis txaus, qhov kub nce.
Feem ntau ua rau:
. Kev thauj khoom ntau dhau ·
Txias kiv cua tsis ua hauj lwm.
Roj twj tso kua mis tsis ua hauj lwm.
Blocked oil passages ·
Radiator obstruction.
Kub ambient kub.
Tsis zoo roj ncig Internal kub chaw
Kev ua tsis tiav:
Siab load - poob siab dua - kub siab dua - acceleratedinsulation kev laus - txo cov neeg kho tshuab zog - rwb thaiv tsev tawg
Lub hauv paus ntsiab lus tseem ceeb engineering yog:
Overheating tsis tsuas yog ua puas lub transformer tam sim ntawd;
Nws ua kom cov laus ntawm cov rwb thaiv tsev.Qhov qis- qhov kub thiab txias tsis ua haujlwm yuav cuam tshuam nrog cov roj ntau dhau lossis txwv tsis pub cov roj ntws, thaum siab dua - qhov kub thiab txias tuaj yeem tshwm sim los ntawm kev sib cuag tsis zoo, circulating tam sim no, thiab cov cua sov hauv cheeb tsam hnyav.Cov CEA phau ntawv siv DGA thermal- pawg ua txhaum raws li hauv qab no.300 degree, 300-700 degree, thiab siab dua 700 degreefordiagnostic classification.
Kev kho tseem ceeb:
Cov DGA qhov kub thiab txias no yog qhov ua txhaum ntawm pawg, tsis yog qhov kev khiav hauj lwm kub ntawm cov roj hloov hluav taws xob lossis cov rwb thaiv tsev winding.