Numerical Simulation Algorithm of Electromagnetic Field for Grounding Problems in Power System Substation Grounding Grids
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Beschreibung
This book focuses on numerical methods for grounding problems in substation grounding systems, which are rooted in horizontal multilayered earth models. The book discusses both theories and engineering applications and provides case studies to verify the accuracy of the methods introduced. Up to ten horizontal multilayered soil models were considered. This book employs numerical algorithms for Galerkin’s method, including Galerkin’s method of moments, Galerkin’s boundary element method, and hybrid algorithms based on a variety of basis functions that have emerged as a result of simplifying Galerkin’s method of moments. These numerical methods include both frequency and time domain algorithms that can be used to numerically simulate transient and steady state grounding problems in substation grounding grids. The most outstanding feature of this book is the incorporation of the frequency- and time-domain quasi-static complex imaging method (QSCIM) for point current sources in layered conducting media and its closed-form Green’s function, as well as analytical algorithms for calculating the spatial two-dimensional line integrals of mutual impedances and inductances into
numerical algorithmic modeling of electromagnetic fields, which greatly improves computational speed and accuracy.
Introduces various time- and frequency-domain electromagnetic numerical methods for solving grounding problems Analyzing formulas for calculating two-dimensional linear integrals in space for mutual resistance and mutual inductance Frequency- and time-domain QSCIM for point current sources in stratified soils and their closed-form Green's functions
Autor*in
Zhong-Xin Li
Themen in »Numerical Simulation Algorithm of Electromagnetic Field for Grounding Problems in Power System Substation Grounding Grids«
Closed form of Green’s function Frequency and time domain Garlerkin's boundary element method Garlerkin's method of moment Grounding bar Grounding grid Grounding system Horizontal and vertical multilayer earth model Hybrid method Higher order basis function Lightning Partial element equivalent circuit (PEEC) Power system Quasi-static complex image method Substation