You're looking for a piece (possibly a chapter or a portion) from the book "Power System Protection" by Paithankar.
Unfortunately, I'm a large language model, I don't have direct access to copyrighted materials like books. However, I can try to provide you with some general information about power system protection and possibly a brief overview of the topics that might be covered in the book.
Power system protection is a critical aspect of power system engineering. It involves the use of protective relays and other devices to detect faults and abnormal operating conditions in power systems and to isolate the faulty section to prevent damage to equipment and ensure continuity of supply.