Impulse Efficient Optimum Impedance Grounding Electrode Configuration for Lightning Transients

被引:1
|
作者
Kumar, A. Senthil [1 ]
Bhandiwad, Pramod K. [1 ]
Manickavasagam, Krishnan [2 ]
机构
[1] Lab Electroopt Syst, Bangalore 110016, India
[2] M S Ramaiah Univ Appl Sci, Elect Engn Dept, Bangalore 560054, India
关键词
Effective count of enhancements (ECE); effective length of horizontal enhancements (ELBE); effective length of primary electrode (ELPE); impedance decrease rate (IDR); optimum impedance electrode configuration (OIEC); EFFECTIVE LENGTH; EARTHING SYSTEMS; HIGH-FREQUENCY; PERFORMANCE; MODEL;
D O I
10.1109/TEMC.2023.3300539
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
As the simple grounding electrodes alone may not provide the required low impedance beyond the effective length, a new electrode configuration of optimum impedance is proposed for lightning transients. The proposed grounding electrode configuration comprises a primary vertical electrode connected with the optimum count of horizontal enhancement electrodes. Exhaustive impulse test simulations are carried out on the primary electrode integrated with multiple enhancement electrodes whose effective lengths are estimated in previous research works. From the simulations, the effective count of enhancements (ECEs) is determined by an optimum impedance reduction approach to arrive at an impulse-efficient electrode configuration. The proposed electrode configurations' resistances and impedances are computed to obtain the impulse coefficients. The reductions of impedances and impulse coefficients in the proposed electrode configurations are calculated. An empirical expression is derived to estimate the ECE using numerical methods. The proposed electrode configura-tion and the ECE expression are verified with the field experiments.
引用
收藏
页码:1990 / 1997
页数:8
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