Switching-surge flashover characteristics of long sphere-plane gaps for UHV station design
- 1 March 1975
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Apparatus and Systems
- Vol. 94 (2) , 551-560
- https://doi.org/10.1109/T-PAS.1975.31883
Abstract
The switching-surge behavior of UHV station electrodes was studied by investigating the performance of sphere-plane gaps. Design curves which show the effect of electrode curvature on the critical flashover voltage for spheres ranging in diameter from 0.5 to 2.5 meters and with gap spacings between 1 and 11 meters are presented. The influence of waveshape on large electrode flashover characteristics was obtained by varying the time-to-crest of the applied waveforms between 75 and 1220 µs. Test data are given for smooth and segmented spheres during dry conditions. The effect of precipitation on the switchlng-surge strength was investigated by wetting the sphere surfaces either by natural rain or artificial means. The results presented provide information required for the switchlng-surge design of outdoor UHV stations.Keywords
This publication has 14 references indexed in Scilit:
- A Charge Simulation Method for the Calculation of High Voltage FieldsIEEE Transactions on Power Apparatus and Systems, 1974
- Coefficient of Variation of the Positive-Impulse Breakdown of Long Air-GapsIEEE Transactions on Power Apparatus and Systems, 1974
- Switching Surge Flashover of UHV Transmission Line InsulationIEEE Transactions on Power Apparatus and Systems, 1971
- Switching-Surge Flashover of EHV-UHV TowersIEEE Transactions on Power Apparatus and Systems, 1970
- Electrostatic field and potential of a supported sphere-plane system inside an earthed chamberProceedings of the Institution of Electrical Engineers, 1970
- Electric field, potential and capacitance of a sphere-plane electrode systemProceedings of the Institution of Electrical Engineers, 1969
- The electric field at any point of a sphere-gapProceedings of the IEE Part C: Monographs, 1962
- The calculation of the electric field in a sphere-gap by means of dipolar co-ordinatesProceedings of the IEE Part C: Monographs, 1959
- The Problem of Two Electrified SpheresProceedings of the Physical Society of London, 1922
- XX.The dielectric strength of airJournal of Computers in Education, 1906