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Full Description
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.
Contents
Progresses of Grounding Problem.- Fundamentals of Numerical Calculation Techniques I.- Fundamentals of Numerical Calculation Techniques II.- Fundamentals of Numerical Calculation Techniques III.- Numerical Methods For Grounding Problem at Steady-State I.- Numerical Methods For Grounding Problem at Steady-State II.- Numerical Methods For Grounding Problem at Transient State I.- Numerical Methods For Grounding Problem at Transient State II.- Numerical Methods For Grounding Problem at Transient State III.- Numerical Methods For Grounding Problem at Transient State IV.- Numerical Methods For Grounding Problem at Transient State V.- Numerical Methods For Grounding Problem at Transient State VI.- Numerical Methods For Grounding Problem at Transient State VII.- Summary For Numerical Method in The Book.
