SYSTEM ANALYSIS. 3 rd. Edition. D P Kothari. Professor, Centre of Energy Studies. Deputy Director (Admin.) Indian Institute of Technology. Delhi. I J Nagrath.. The author's D Kothari and I J Nagrath clearly explained about this book by ... Download (Link -1) – Power System Engineering book by Kothari and Nagrath. ... and simulink program methods for power quality and power systems analysis. powe..