ABSTRACT
Roughly speaking, power systems are composed of generators, and transmission and distribution systems for loads. An electric distribution system aims to provide energy at a minimum voltage variation and as few interruptions as possible if a failure on an element occurs. The distribution system design starts at the consumer level by analyzing the demand type, the power factor, and other load characteristics. Based on the Fortescue symmetrical components theory, electric machinery used in power systems can be decoupled of its symmetrical components with the objective of analyzing a complete power system under unbalanced conditions. This chapter presents the decomposition of transformers, transmission lines, a synchronous machine, and an asynchronous machine. Every step in the power system requires meeting public demands in sufficient quantity, and being reliable and safe, so the huge investment first made can be effectively exploited by supplying a continuous service.
