The present scenario of the modern power network has obligated protection system to perform better. Application of multi-functional measurement devices, inclusion of renewable sources and FACTS devices, and extreme utilization of transmission system are the major factors behind the undesired and unintentional operation of protection scheme. System stressed conditions like power swing, voltage instability and load encroachment are another concern for protection scheme. Protective relay operates beyond their setting guidelines and zones. This book investigates on distance and differential...