Title :
Condition Assessment of Instrument Transformer by Partial Discharge Analysis: A Comprehensive Approach
Author :
Cavallini, A. ; Montanari, G.C. ; Codet, B. ; Vetu, P.
Author_Institution :
Dept. of Electr. Eng., Bologna Univ.
Abstract :
This paper presents results of partial discharge tests that have been carried out on high voltage instrument transformers. The goal is to develop diagnostic tools that, starting from partial discharge measurements, can provide indications on the degradation state of the paper/oil transformer insulation systems. Preliminary results indicate the PD source recognition is a fundamental tool to assess the condition of the transformer being monitored, while relying only upon partial discharge repetition rate and magnitude can provide misleading indications
Keywords :
partial discharge measurement; power transformer insulation; high voltage instrument transformers; oil transformer insulation systems; paper transformer insulation systems; partial discharge analysis; partial discharge measurements; Degradation; Dissolved gas analysis; Instrument transformers; Oil insulation; Partial discharges; Petroleum; Power transformer insulation; Risk management; Sampling methods; Testing;
Conference_Titel :
Transmission and Distribution Conference and Exhibition, 2005/2006 IEEE PES
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-9194-2
DOI :
10.1109/TDC.2006.1668564
