Title :
Modelling of bus coupler effect on lightning overvoltages in HV substations
Author :
Astinfeshan, Sajjad ; Gholami, Ahmad ; Esfahani, Ahmad Reza Salah
Author_Institution :
Dept. of Electr. Eng., Iran Univ. of Sci. & Technol., Tehran, Iran
Abstract :
This paper presents a model of lightning performance of a 230 kV double circuit overhead transmission line and substation using ATP/EMTP. Including the models of transmission line, tower surge response, footing impedance, impulse electric strength of line insulator and lightning stroke as well as substation equipments, the paper introduces a comprehensive lightning transient study. Based on this model, the paper discussed the influence of bus coupler open/close status on lightning overvoltages produced by shielding failure and back flashover in substation equipments.
Keywords :
overvoltage protection; power overhead lines; power system simulation; substation protection; ATP/EMTP; HV substations; back flashover; bus coupler effect; bus coupler open/close status; comprehensive lightning transient study; double circuit overhead transmission line; footing impedance; impulse electric strength; lightning overvoltages; lightning performance; lightning stroke; line insulator; shielding failure; substation equipments; tower surge response; voltage 230 kV; Couplers; Integrated circuit modeling; Lightning; Poles and towers; Power transmission lines; Substations; Surges; back flashover; bus coupler; lightning overvoltage; sheilding failure;
Conference_Titel :
Environment and Electrical Engineering (EEEIC), 2012 11th International Conference on
Conference_Location :
Venice
Print_ISBN :
978-1-4577-1830-4
DOI :
10.1109/EEEIC.2012.6221456
