Design of Transmission Lines
Components of Transmission Line: Conductor Earth wire Insulator Transmission Tower Wave trap and other hardware (Clamp, Spacer, Vibration dampers, connectors etc.) Design Methodology: Gather preliminary line design data and available climatic data Select reliability level in terms of return period of design Calculate climatic loading on components Calculate loads corresponding to security requirements (failure containment) Calculate loads related to safety during construction and maintenance Select appropriate correction factors, if applicable, to the design components such as use factor, strength factors related to numbers of components, strength coordination, quality control, and the characteristic strength. Design the components for the above loads and strength. Selection of Transmission Voltage: Standard Voltage – 11KV, 33KV,66,110,132, 220, 400 KV Tolerances – ±10% up to 220 KV & ±5% for 400 KV Selection Criterion of Economic Voltage – Quantum ...