Work

Computing Lightning-Induced Voltages on Overhead Distribution Lines Using the RBF-FDTD Approach

Year: 2025

Type: article

Abstract: This paper presents an advanced application of the Radial Basis Function–Finite-Difference Time-Domain (RBF-FDTD) method, as introduced in [1], to solve the field-to-line coupling equations for simulating lightning-induced voltages on overhead distribution lines. Simulation results for a typical 1-km, 110-kV line obtained using both the RBF-FDTD and conventional FDTD methods are compared against benchmark solutions from the Lightning-Induced Overvoltage (LIOV) software to validate accuracy and determine the optimal shape parameters for the RBFs. The RBF-FDTD method exhibits high accuracy and reduced numerical dispersion, particularly when the shape parameters are optimally selected. Furthermore, the effects of critical physical factors—including lightning electromagnetic field models, imperfect ground conductivity, and corona discharge dynamics—on the induced voltages are analyzed through error evaluation. The results confirm the proposed method’s capability for reliable and efficient simulation of lightning transients, providing valuable insights for the design and protection of power distribution systems against fast transient overvoltages.

Source: IEEE Access

DOI: 10.1109/access.2025.3588253

Authors: Duc-Quang Vu, Nhat-Nam Nguyen, Tinh-Minh T. Le, Phan-Tu Vu

Institution: Ho Chi Minh City University of Technology

Language: English

Topic: Lightning and Electromagnetic Phenomena

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $2,075