Field experience of transformer untanking to identify electrical faults and comparison with dissolved gas analysis

• Main Authors: Samsudin R., Ramli A.Q., Berhanuddin A., Zaidey Y.
• Other Authors: 56004332500
• Format: Conference paper
• Published: 2023
• Subjects: Arcing; Dissolved gas analysis; On Load Tap Changer (OLTC); Partial discharge; Total dissolved combustible gas; Dissolution; Electric fault location; Fault detection; Gas chromatography; Gases; Load testing; Oil filled transformers; Pollution detection; Power transformers; Sustainable development; Tanks (containers); Transformer substations; Voltage control; Analysis method; Combustible gas; Dissolved-gas-analysis techniques; Electrical discharges; Electrical faults; Electrical stress; Field experience; Oil contamination; On-load tap changers; Paper insulation; Partial discharge testing; Physical inspection; Tank design; Partial discharges

Power transformer consists of components which are under consistent thermal and electrical stresses. The major component which degrades under these stresses is the paper insulation of the power transformer. The life of the transformer is determined by the condition of the paper insulation. The degra...