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 Galerkins method, including Galerkins method of moments, Galerkins boundary element method, and hybrid algorithms based on a variety of basis functions that have emerged as a result of simplifying Galerkins 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 Greens 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.
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.
Zhong-Xin Li was born in Xian, Shaanxi Province, China. He received the B.S. degree in power system automation and the M.S. degree in high voltage engineering from Xian Jiaotong University, China, in 1989 and 1994, respectively, and the Ph.D. degree in electrical engineering from Tsinghua University, Beijing, China, in 1999.
After receiving his Ph.D. degree in the same year, he went to Fudan University for postdoctoral research, and stayed there after his postdoctoral release. After leaving Fudan University in 2003, he worked in the Electromagnetic Environment Laboratory of the High Voltage Research Institute of China Electric Power Research Institute, and then worked as a visiting scholar at City University of Hong Kong in 2004, and then worked in the The Electromagnetics Academy of Zhejiang University in 2005. In 2007, he returned to the Lightning Arrester Technology Research Laboratory of the Institute of High Voltage Research, China Electric Power Research Institute, where he has worked until now.
So far, he has published nearly 60 papers in international journals. Among them, 52 papers are indexed by SCI and 57 papers are indexed by EI. His research interests include the application of computational electromagnetics to the analysis of grounding systems.
