ABSTRACT
The analysis of a distribution feeder will typically consist of a study of the feeder under normal steady-state operating conditions (power-flow analysis) and a study of the feeder under short-circuit conditions (short-circuit analysis). The power-flow analysis of a distribution feeder is similar to that of an interconnected transmission system. This chapter demonstrates the application of the element models that are used in the power-flow analysis and short-circuit analysis of a distribution feeder. The modified ladder iterative technique was used for the power-flow analysis. The chapter addresses how for performing this technique can be used for an unbalanced three-phase feeder. It develops and demonstrates the modified ladder iterative technique using the forward and backward sweep matrices for the series elements. The chapter also develops a method for short-circuit analysis of an unbalanced three-phase distribution feeder using the phase frame. The shunt components of a distribution feeder are spot static loads, spot induction machines and capacitor banks.
