For research or advanced industrial design, it should be supplemented with standard texts like Power System Analysis by Grainger & Stevenson or Power System Engineering by Nagrath & Kothari.
However, please note: The correct author name is (not Roy). The book is published by PHI Learning Pvt. Ltd. (formerly Prentice Hall of India). Electrical Power System Subir Roy Prentice Hall
It seems you are looking for a or detailed summary related to the book: For research or advanced industrial design, it should