AN OVER VIEW OF SHORT CIRCUIT ANALYSIS AND CHALLENGES IN THE DEVELOPMENT OF 1200 KV AUTO TRANSFORMER

摘要

INTRODUCTIONSpecification of 1200 kV auto transformer Leakage field distribution Forces during short circuit- Radial forces- Axial forcesAnalysis - Failure modes due to radial force- Winding subjected to tensile stress (hoop stress)- Winidng subjected to compressive stress (buckling) Analysis - Failure modes due to axial force- Bending between radial spacers- Tilting under axial loadEnd Force Analysis - Clamping ring withstand for pre stressCalculation of Safety factors for different cases