Three-Dimensional FDTD-Based Simulation of Induced Surges in Secondary Circuits Owing to Primary-Circuit Surges in Substations

Currently, plenty of sensitive electronic devices are installed in secondary circuits in substations and power plants. Electronic devices may malfunction and become damaged owing to electromagnetic disturbances caused mainly by lightning surges. To protect electronic devices properly, it is useful t...

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Bibliographic Details
Published in:IEEE transactions on electromagnetic compatibility 2021-08, Vol.63 (4), p.1078-1089
Main Authors: Tatematsu, Akiyoshi, Rachidi, Farhad, Rubinstein, Marcos
Format: Article
Language:English
Subjects:
Circuits
Conductors
Control equipment
Electrical surges
Electronic devices
Finite difference methods
Finite difference time domain method
Finite-difference time-domain (FDTD) method
Frequency measurement
Induced voltage
Instrument transformers
Integrated circuit modeling
lightning
Lightning protection
Model testing
Power plants
secondary circuits
Simulation
Substations
Surge protection
Surges
Switchgear
Time domain analysis
Transient response
transients
vector fitting (VF) technique
Waveforms
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Summary:Currently, plenty of sensitive electronic devices are installed in secondary circuits in substations and power plants. Electronic devices may malfunction and become damaged owing to electromagnetic disturbances caused mainly by lightning surges. To protect electronic devices properly, it is useful to predict electromagnetic transient phenomena and evaluate the effectiveness of lightning protection methodologies. Recently, the finite-difference time-domain (FDTD) method, which is one of the full-wave numerical approaches, has become a very powerful tool for analyzing electromagnetic transient phenomena in 3-D structures and grounding systems. In this article, first, we study the modeling of protection relay units and instrument transformers for FDTD-based surge simulations. Second, using an FDTD-based electromagnetic transient simulation code, we model a test platform of a gas-insulated switchgear (GIS), instrument transformers, and a control cable above a grounding grid. By applying a surge voltage to the center conductor of the GIS model, we calculate the transient voltage in the GIS model, the transient response of the grounding grid, and the induced voltage on the control cable, and compare the calculated results with measured waveforms for validation.
ISSN:0018-9375
1558-187X
DOI:10.1109/TEMC.2021.3049144