Salman K. Salman is Professor Emeritus at The Robert Gordon University-Aberdeen, Scotland, where he established and led the Renewable Energy & Power Systems Group. His research interest includes integration of renewable energy sources into electrical distribution networks, modelling of wind turbines, protection of distribution networks with integrated distributed generation, and substation automation. He worked closely with industry including ALSTOM, ScottishPower, Cruickshank and Partners, and National Grid, UK. He is the author of more than 120 papers, the author of "Introduction of Smart Grid-Concept, Technologies and Evolution" (IET, 2017), and the co-author of "Digital protection for power systems, 1st Edition" (IET, 1995).Allan T. Johns was Professor of Electrical Engineering and Head of the School of Electronic and Electrical Engineering at the University of Bath. He was the author of over 200 journal papers, and in 1982 he was awarded the degree of Doctor of Science for his original and substantial contribution to knowledge in the area of digital protection and simulation of electrical power systems. He worked for nine years in British industry, both in electricity supply and in manufacturing. He was a Fellow of the IEE, a Series Editor for the IEE Power Series of books and Tutorial Editor of Power Engineering Journal. Among the awards he earned were the IEE Crompton Premium in 1983 and the IEE Power Divisional Board Premium in 1989.

• Chapter 1: IntroductionChapter 2: Mathematical background to protection algorithmsChapter 3: Basic elements of digital protectionChapter 4: Sinusoidal wave-based algorithmsChapter 5: Fourier analysis, Walsh function-based, and S-transform techniquesChapter 6: Least squares-based methodsChapter 7: Differential equation-based techniquesChapter 8: Fundamentals of TW-based protectionChapter 9: TW protective schemesChapter 10: Digital differential protection of transformersChapter 11: Digital line differential protectionChapter 12: Comparison between digital protection algorithmsChapter 13: Protection of distribution networks with distributed generation including renewables