Condition assessment of OLTC using duval triangle and static winding resistance test

• Main Authors: Khiar M.S.A., Thayoob Y.H.Md., Ghazali Y.Z.Y., Ghani S.A., Chairul I.S.
• Other Authors: 55336341600
• Format: Conference Paper
• Published: 2023
• Subjects: Contact resistance; Dissolved Gas Analysis (DGA); Duval Triangle Method; OLTC; Static Winding Resistance Test; Degradation; Optimization; Bad contact; Condition assessments; Dissolved gas analysis; Hotspots; Insulation degradation; On-load tap changers; Winding resistances; Engineering research

On Load Tap Changer (OLTC) failure occurs is due to the insulation degradation and contacts failure inside it. Other than that, contacts wear influences the OLTC performances. The worn contacts will cause hotspots in the OLTC tank and cause the insulating oil to degrade faster. As a result, this wil...