Lightning Overvoltages on Hybrid Overhead Lines (Invited Lecture)
Author:
- 9 October 2023
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 1-5
Abstract
The CIGRE Working Group (WG) C4.67 (Lightning Protection of Hybrid Overhead Lines) started its activities in January 2022. The main objectives of the WG are to assess the overvoltages caused by direct and indirect strokes on hybrid overhead lines and to analyze the lightning performances of their distribution circuits, making comparisons with conventional distribution circuits alone. It also aims to provide guidelines for the safety of persons and protection of equipment in low-voltage networks supplied by hybrid overhead lines, as well as assess the lightning overvoltages on typical multi-circuit transmission lines with different rated voltages and protection methods. This paper presents some results obtained so far, with emphasis on the overvoltages associated with direct strokes to an existing hybrid overhead line obtained by calculations using the Electromagnetic Transients Program (EMTP) and measurements performed on a 1:20 scale model. The good agreement between measured and calculated voltages validates the computational and experimental models developed for the investigations.Keywords
This publication has 11 references indexed in Scilit:
- Surge Impedance of a Hybrid Overhead Line Tower2023
- Analysis of Lightning Overvoltages on Overhead Hybrid Lines2022
- Lightning protection of a multi-circuit HV-MV overhead lineElectric Power Systems Research, 2020
- Lightning interaction with medium-voltage overhead power distribution systems2020
- Lightning Protection of a Compact MV Power Line Sharing the same Poles of a HV Line2018
- Interaction of multi-circuit overhead transmission lines of different voltages located on the same pylons2012
- Confirmation of the Error of Jordan's Formula on Tower Surge ImpedanceIEEJ Transactions on Power and Energy, 1994
- The generalized integration method for predicting impulse volt-time characteristics for non-standard wave shapes-a theoretical basisIEEE Transactions on Electrical Insulation, 1988
- Surge Protection of Cable-Connected EquipmentTransactions of the American Institute of Electrical Engineers, 1950
- Co-ordination of Lightning Arrester Location with Transformer Insulation LevelTransactions of the American Institute of Electrical Engineers, 1950