Effective length of a single long horizontal ground conductor buried in homogeneous soil

Ahmad, Wan Fatinhamamah Wan; Thomas, Dave; Christopoulos, C.; Chong, Siok‐Geok; Jasni, Jasronita; Kadir, Mohd Zainal Abidin Ab; Hizam, Hashim

doi:10.1109/psce.2009.4840161

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…In terms of transient analysis, the electrode effective length can also be stated as the length, above which the reflection voltage from the receiving end does not affect the peak value of the sending end voltage [8]- [9].…”

Section: Effective Length Of An Electrodementioning

confidence: 99%

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Effective length study of grounding electrod reached by lightning based on Transmission Line modelling Method

Gazzana

Bretãs

Dias

et al. 2012

2012 IEEE International Symposium on Electromagnetic Compatibility

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This paper presents a study about the effective length of a horizontal grounding electrode used to dissipate electrical current to the earth proceeding from a lightning surge. The work discusses the influence of the soil parameters in the scattering process considering fasts and slow wave shapes. Initially an introduction about the problem is made, with a brief description about the effective length concepts. An algorithm based on the Transmission Line Modeling Method in one dimension (TLM-1D), taking into account the soil ionization phenomenon, was developed in order to evaluate the transitory behavior of the grounding. The simulation results show that a significant part of the electrode is not effectively used for scattering the surge current to the soil and that the effective length of the conductor is dependent mainly on the soil resistivity and the wave shape.

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Section: Effective Length Of An Electrodementioning

confidence: 99%

“…These divergences make it difficult for this kind of study, mainly in terms of comparison results [6], [8], [10]. So, in this work the electrode effective length is considered as the length of the electrode properly used to dissipate the current to the earth.…”

Section: Effective Length Of An Electrodementioning

confidence: 99%

Effective length study of grounding electrod reached by lightning based on Transmission Line modelling Method

Gazzana

Bretãs

Dias

et al. 2012

2012 IEEE International Symposium on Electromagnetic Compatibility

View full text Add to dashboard Cite

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A Study on Bentonite and Kenaf Properties for Grounding Purposes

Ahmad

Hamzah

Jasni

et al. 2018

2018 34th International Conference on Lightning Protection (ICLP)

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There are many methods that can be used in order to increase the performance of a grounding system meant for power system protection, i.e. by lowering its earth resistance values, which one of them is where soil could be treated using chemical or natural enhancement materials. This technique is one of the effective ways to improve the performance of a grounding system in which this work employed 15 kg Bentonite, and 3 kg Kenaf in powder and fibre forms as the natural enhancement materials for grounding systems at which they were either mixed or layered. The main purpose of conduction this work is to compare the performance of natural enhancement material mixture grounding systems to a Reference grounding system, which is without any enhancement material in the vicinity of the ground conductor. Fall-of-potential method was employed to measure earth resistance for the performances of the four grounding systems to be compared. After 60 days, their performances in descending order were Bentonite and Kenaf powder layered, Bentonite and Kenaf powder mixed, Bentonite and Kenaf fibre layered and Reference grounding systems. Hence, the grounding system with Bentonite and Kenaf powder layered is proposed to be the best to be used in order to reduce the earth resistance as it has the lowest earth resistance and able to stabilize faster compared to the other three grounding systems.

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Variations of Soil Resistivity Values due to Grounding System Installations with Natural Enhancement Material Mixtures

Ahmad

Lai

Jasni

et al. 2018

2018 34th International Conference on Lightning Protection (ICLP)

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Soil resistivity is a crucial parameter to be taken into consideration in designing any electrical grounding system, as the understanding towards its changes over time and soil properties is crucial to ensure transients and fault currents to be able to be dispersed to the earth in shortest time and shortest path possible. National and international standards stated that there is necessity to measure soil resistivity of a site before any grounding system installation could be carried out at that site. Steps and tests needed to be done in finding a suitable site for grounding system installations with Natural Enhancement Material Mixtures were discussed in this work. Three sites were taken into consideration, which only one to be selected, based on soil resistivity assessments that were carried out. The effectiveness of the Natural Enhancement Material Mixtures grounding systems installed at the selected site were also monitored for the duration of one year, by measuring the soil resistivity of the site once in three months. Note that all the sites are located in Universiti of Putra Malaysia, Serdang, Selangor, Malaysia. It is shown that there is general relationship between the soil resistivity values and climate change in Malaysia throughout a year of measurement duration. Also, by installing grounding systems with Natural Enhancement Material Mixtures, the soil resistivity values were slightly reduced over a period of one year.

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Effective length of a single long horizontal ground conductor buried in homogeneous soil

Cited by 3 publications

References 6 publications

Effective length study of grounding electrod reached by lightning based on Transmission Line modelling Method

Effective length study of grounding electrod reached by lightning based on Transmission Line modelling Method

A Study on Bentonite and Kenaf Properties for Grounding Purposes

Variations of Soil Resistivity Values due to Grounding System Installations with Natural Enhancement Material Mixtures

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