Diagnosis of OLTC via duval triangle method and dynamic current measurement

• Main Authors: Khiar M.S.A., Thayoob Y.H.M., Ghazali Y.Z.Y., Ghani S.A., Chairul I.S.
• Other Authors: 55336341600
• Format: Conference paper
• Published: Elsevier Ltd 2023
• Subjects: Contact resistance; Dynamic current measurement; Fixed contact; OLTC; Transition contact
• Institution: Universiti Tenaga Nasional

Power transformers studies have shown that the main cause of power transformers failures is the On Load Tap Changer (OLTC). OLTC failure occurs due to the insulation degradation and contacts failure inside it. Other than that, contacts wear influences the OLTC performance and this phenomenon has not...