A network of electrical components that are assembled to supply, use and transfer electric power is called an electrical power system. It is an integration of several components, such as power sources, conductors, reactors, capacitors, loads, etc. A power system needs to be designed in a manner that it maintains the value of the voltage, power and frequency supplied to loads, otherwise it can lead to damage to synchronous machines and other appliances. This remains the most challenging aspect of such systems. Power systems often use three-phase AC power, which is the standard for large scale power distribution and transmission. Some power systems are not dependent on three-phase AC power, such as those used in ocean liners, automobiles, electric rail systems and aircrafts. This book is a valuable compilation of topics, ranging from the basic to the most complex advancements in electrical power systems. It presents this complex subject in the most comprehensible and easy to understand language. The extensive content of this book provides the readers with a thorough understanding of this domain.