Presentation on theme: "Identifying opportunities to improve the efficiency of power transmission through existing Overhead Power Lines Konstantinos Kopsidas Supergen - AMPerES."— Presentation transcript:
Identifying opportunities to improve the efficiency of power transmission through existing Overhead Power Lines Konstantinos Kopsidas Supergen - AMPerES
Structure of the Presentation Supergen - AMPerES Basics of Ampacity & Sag Holistic Computational Methodology for Rating an OHL Analysis/Comparison of AAAC & ACSR Conductors on an 33kV OHL system Advanced conductors on the 33kV system Conclusions - The Way Forward
Basics of Ampacity & Sag Supergen - AMPerES Ampacity = The amount of current a conductor can carry without exceeding a specified temperature I MAX is defined by the max conductor temperature or the max conductor elongation set by the operator
Supergen - AMPerES Basics of Ampacity & Sag SPAN MCT Tension SPAN
Supergen - AMPerES Computational Methodology
Supergen - AMPerES Mechanical Computations EXAMPLE OF LOAD CASE WIND: 380N/m 2 ICE: 9.5mm & 913kg/m 3 BS EN BS EN BS EN Insulator Maximum Working Tension Absolute Conductor Working Tension Absolute Maximum Working Tension Vibration Limited Maximum Working Tension
Supergen - AMPerES Electrical Computations BS method Neglects steel core in the table F.42 of standards R DC = R AL ASTM method considers steel core R DC = R ST || R AL BS EN ASTM B232
Supergen - AMPerES ConclusionsConclusions The methodology can be applied in any type & size of conductor including system design limitations & weather. AAAC are more suitable than the ACSR for the 33kV typical wood pole system. ACCC/TW develop less sag allowing uprating of the structure to 66kV.
Supergen - AMPerES What is Next Performance Analysis of a real system Any real system?