From the basic fundamentals and principles of protective relaying to current research areas in protective systems and future developments in the field, this work covers all aspects of power system protection. It includes the implementation of relays using electromechanical devices, static devices and microprocessors; distance protection of high voltage and extra high voltage lines, including distance relay errors; and adaptive, dynamic, travelling wave and noise-based relays.INTRODUCTION A three-phase transformer, either step-up or step-down, is an integral part of any power system. ... Figure 9.1 shows the four types of connections (star-delta, delta-star, star- star, and delta-delta) for a three-phase transformer.
|Title||:||Transmission Network Protection|
|Author||:||Yeshwant G. Paithankar|
|Publisher||:||CRC Press - 1997-09-19|