Transient behaviour of grounding electrodes in uniform and in vertically stratified soil using state space representation

被引:21
作者
Chiheb, Sofiane [1 ]
Kherif, Omar [1 ]
Teguar, Madjid [1 ]
Mekhaldi, Abdelouahab [1 ]
Harid, Noureddine [2 ]
机构
[1] Ecole Natl Polytech, Lab Rech Electrotech, Algiers, Algeria
[2] Petr Inst, Elect Engn Dept, POB 2533, Abu Dhabi, U Arab Emirates
关键词
earth electrodes; transmission lines; electrical installation; lightning protection; transient behaviour; grounding electrodes; vertically stratified soil; state space representation; impulse current; transmission line method; soil ionisation; TRANSMISSION-LINE; SYSTEMS; MODEL; CURRENTS; IONIZATION; VALIDATION; RESISTANCE; ROD;
D O I
10.1049/iet-smt.2017.0310
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This investigation is devoted to study, in time domain, the transient behaviour of vertical and horizontal grounding conductors submitted to impulse current using state space representation-based transmission line method. This study has been carried out with and without incorporating soil ionisation and mutual coupling between conductor elements for soils of low and high resistivities. The results are focused on the time-domain solution of the electrode's transient potential rise and its impulse performance parameters. The results show the importance of including the mutual coupling between segments of the same electrode and soil ionisation. The results are compared with both published theoretical approaches and experimental measurements, and show acceptable agreement. This method has been applied to compute the transient potential of horizontal electrodes buried in vertically stratified soil, a situation which can occur where long horizontal counterpoise is buried in a highly contrasting soil along its length.
引用
收藏
页码:427 / 435
页数:9
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