Title :
Improved EHV line switching surge control by application of MO-arresters and controlled switching
Author :
Carvalho, A. ; Lacorte, M. ; Knudsen, O.
Author_Institution :
ABB High Voltage Technol. Ltd., Zurich-Oerlikon, Switzerland
Abstract :
Transmission line switching surges and its limitation by means of metal-oxide (MO) surge arresters and controlled switching are discussed. The benefits of these overvoltage control methods are analysed based on extensive simulation studies of 550 kV transmission lines. The line length is taken as an independent parameter and the degree of shunt-compensation is considered as well. The simulation studies show that MO arresters and controlled switching cope in most cases with the insulation coordination requirements of 550 kV networks, thus eliminating the need of closing resistors
Keywords :
arresters; compensation; insulation co-ordination; overvoltage protection; power system control; power transmission lines; switching; voltage control; 550 kV; EHV line switching surge control; closing resistors; controlled switching; insulation coordination requirements; metal oxide arresters; overvoltage control methods; shunt-compensation; Arresters; Distributed parameter circuits; Insulation; Power system protection; Power system simulation; Power transmission lines; Resistors; Surge protection; Switching circuits; Voltage control;
Conference_Titel :
Energy Management and Power Delivery, 1995. Proceedings of EMPD '95., 1995 International Conference on
Print_ISBN :
0-7803-2981-3
DOI :
10.1109/EMPD.1995.500741
