Comparative studies of lightning performance of a quadruple-circuit dual voltage 275/132 kV transmission line design with wooden crossarms

Abstract

This paper describes a transmission line lightning performance analysis program QCORTL which is able to predict single and multi-circuit flashover and outage types and rates of a quadruple circuit transmission line. It employs the Monte Carlo statistical technique to select lightning and system parameters and the dynamic travelling wave technique to calculate overvoltages on transmission line towers. The program has also incorporated nonlinear corona effects, the dynamic response of soil and the modelling of wooden-crossarms for arc-quenching in its calculations. The assessment of a Malaysian quadruple circuit dual voltage 275/132 kV transmission line using this program is demonstrated to illustrate the detailed nature of the analysis that is suitable for insulation design of transmission lines. >