An approach to improve grounding resistance characteristic in existing 115 KV transmission towers

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dc.contributor.authorPothisarn, Chaichan
dc.contributor.authorKulwongwit, Wiwat
dc.contributor.authorLertwanitrot, Praikanok
dc.contributor.authorBunjongjit, Sulee
dc.contributor.authorNgaopitakkul, Atthapol
dc.date.accessioned2026-08-06T10:47:36Z
dc.date.available2026-08-06T10:47:36Z
dc.date.issued2024-12-01
dc.description.abstractEffective grounding can attenuate fault currents and reduce damage to power system equipment, making the grounding system a crucial protection scheme. Generally, the ground resistance is set to a value less than 10 Ω. However, in practice, it is difficult to achieve this in certain areas, such as mountains, plains, and swamps. To address this problem, this study analyses the (1) actual footing resistance, (2) ground resistivity, and (3) ground length of transmission towers located in specific areas. Non-linear factors, impedance, and coupling effect are considered instead of traditional variables. A grounding design algorithm is proposed based on the ATPDraw program. Simulation results are applied to the 115 kV real-world system of the Electricity Generating Authority of Thailand. The grounding system exhibits a satisfactory performance improvement, as evidenced by comparisons between simulation and actual measurements. The findings are useful for implementing future improvements in grounding protection schemes.
dc.identifier.citationResults in Engineering, 24, 2024
dc.identifier.doi10.1016/j.rineng.2024.103465
dc.identifier.issn25901230
dc.identifier.other2-s2.0-85210007875
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/16027
dc.sourceResults in Engineering
dc.subjectElectrical grid
dc.subjectGround impedance
dc.subjectGround resistance
dc.subjectGrounding system
dc.subjectLightning strikes
dc.subjectReal-world experimentation
dc.subjectTransmission towers
dc.titleAn approach to improve grounding resistance characteristic in existing 115 KV transmission towers
dc.typeArticle

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