The RBF-FDTD Method for Computing Lightning-Transient Voltages on Grounding Systems
This paper introduces an advanced application of the Radial Basis Function-Finite-Difference Time-Domain (RBF-FDTD) method, as proposed in Vu et al., for computing lightning-induced transient voltages in grounding systems. The approach models grounding structures as non-uniform transmission lines, g...
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IEEE
2025-01-01
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| Online Access: | https://ieeexplore.ieee.org/document/11021450/ |
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| author | Xuan-Binh Nguyen Nhat-Nam Nguyen Tinh-Minh T. Le Phan-Tu Vu |
| author_facet | Xuan-Binh Nguyen Nhat-Nam Nguyen Tinh-Minh T. Le Phan-Tu Vu |
| author_sort | Xuan-Binh Nguyen |
| collection | DOAJ |
| description | This paper introduces an advanced application of the Radial Basis Function-Finite-Difference Time-Domain (RBF-FDTD) method, as proposed in Vu et al., for computing lightning-induced transient voltages in grounding systems. The approach models grounding structures as non-uniform transmission lines, governed by telegrapher’s equations with space- and time-varying parameters—inductance <inline-formula> <tex-math notation="LaTeX">$L(x,t)$ </tex-math></inline-formula>, conductance <inline-formula> <tex-math notation="LaTeX">$G(x,t)$ </tex-math></inline-formula>, and capacitance <inline-formula> <tex-math notation="LaTeX">$C(x,t)$ </tex-math></inline-formula>—while accounting for electromagnetic coupling across complex grounding configurations. Leveraging the method’s inherent flexibility and precision, extensive numerical simulations were conducted on two horizontal grounding electrodes and three benchmark grounding grids, validating its capability to accurately capture both localized and distributed transient effects. The results underscore the robustness, computational efficiency, and practical utility of RBF-FDTD in analyzing transient electromagnetic phenomena in power system grounding infrastructures. This study not only confirms the method’s superiority in modeling intricate grounding responses but also offers critical insights for enhancing the design and optimization of grounding systems under lightning and fast-transient conditions. |
| format | Article |
| id | doaj-art-1bc93a09e85a49c2bb0c711b121c7411 |
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| issn | 2169-3536 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
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| spelling | doaj-art-1bc93a09e85a49c2bb0c711b121c74112025-08-20T03:11:17ZengIEEEIEEE Access2169-35362025-01-0113974879749810.1109/ACCESS.2025.357591311021450The RBF-FDTD Method for Computing Lightning-Transient Voltages on Grounding SystemsXuan-Binh Nguyen0https://orcid.org/0009-0002-1243-6576Nhat-Nam Nguyen1https://orcid.org/0000-0002-7780-0351Tinh-Minh T. Le2https://orcid.org/0000-0003-1828-4315Phan-Tu Vu3https://orcid.org/0000-0002-5262-0266Department of Power Systems, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, VietnamDepartment of Power Systems, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, VietnamDepartment of Power Systems, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, VietnamDepartment of Power Systems, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, VietnamThis paper introduces an advanced application of the Radial Basis Function-Finite-Difference Time-Domain (RBF-FDTD) method, as proposed in Vu et al., for computing lightning-induced transient voltages in grounding systems. The approach models grounding structures as non-uniform transmission lines, governed by telegrapher’s equations with space- and time-varying parameters—inductance <inline-formula> <tex-math notation="LaTeX">$L(x,t)$ </tex-math></inline-formula>, conductance <inline-formula> <tex-math notation="LaTeX">$G(x,t)$ </tex-math></inline-formula>, and capacitance <inline-formula> <tex-math notation="LaTeX">$C(x,t)$ </tex-math></inline-formula>—while accounting for electromagnetic coupling across complex grounding configurations. Leveraging the method’s inherent flexibility and precision, extensive numerical simulations were conducted on two horizontal grounding electrodes and three benchmark grounding grids, validating its capability to accurately capture both localized and distributed transient effects. The results underscore the robustness, computational efficiency, and practical utility of RBF-FDTD in analyzing transient electromagnetic phenomena in power system grounding infrastructures. This study not only confirms the method’s superiority in modeling intricate grounding responses but also offers critical insights for enhancing the design and optimization of grounding systems under lightning and fast-transient conditions.https://ieeexplore.ieee.org/document/11021450/Transientslightninggrounding electrodegrounding gridRBF-FDTD method |
| spellingShingle | Xuan-Binh Nguyen Nhat-Nam Nguyen Tinh-Minh T. Le Phan-Tu Vu The RBF-FDTD Method for Computing Lightning-Transient Voltages on Grounding Systems IEEE Access Transients lightning grounding electrode grounding grid RBF-FDTD method |
| title | The RBF-FDTD Method for Computing Lightning-Transient Voltages on Grounding Systems |
| title_full | The RBF-FDTD Method for Computing Lightning-Transient Voltages on Grounding Systems |
| title_fullStr | The RBF-FDTD Method for Computing Lightning-Transient Voltages on Grounding Systems |
| title_full_unstemmed | The RBF-FDTD Method for Computing Lightning-Transient Voltages on Grounding Systems |
| title_short | The RBF-FDTD Method for Computing Lightning-Transient Voltages on Grounding Systems |
| title_sort | rbf fdtd method for computing lightning transient voltages on grounding systems |
| topic | Transients lightning grounding electrode grounding grid RBF-FDTD method |
| url | https://ieeexplore.ieee.org/document/11021450/ |
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