Title :
Lightning transient performance analysis of substation based on complete transmission line model of power network and grounding systems
Author :
Zeng, Rong ; Kang, Peng ; He, Jinliang ; Zhang, Bo ; Chen, Shuiming ; Zou, Jun
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing
fDate :
4/1/2006 12:00:00 AM
Abstract :
The grounding systems are simply handled as lumped resistances with constant values in traditional lightning transient analysis of substation. A complete transmission line model is proposed to consider the actual transient process of power network and the grounding grid of the substation and the grounding devices of transmission towers. A loss transmission line model with time-variable parameters is proposed to calculate the transient characteristics of grounding systems under lightning current in which the soil ionization phenomena around the ground conductors are considered. The analyzed results by the proposed model have large differences with those obtained by the traditional simplified method. The transient characteristics of grounding systems have strong influence on the lightning transient process of substation
Keywords :
earthing; lightning protection; power transmission planning; substation protection; transient analysis; ground conductors; grounding system; lightning current; lightning transient process; power network; soil ionization phenomena; substation grounding grid; time-variable parameters; transient performance analysis; transmission line model; transmission towers; Grounding; Lightning; Performance analysis; Poles and towers; Power system modeling; Power system transients; Power transmission lines; Propagation losses; Substations; Transient analysis; Grounding system; lightning; soil ionization; substation; transient performance; transmission line model;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.871462
