2.6 Single line representation of power system

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Single line representation of power system 

Trying to represent a practical power system where a lot of interconnections between several generating stations involving a large number of transformers using three lines corresponding to R, Y and B phase will become unnecessary clumsy and complicated. To avoid this, a single line along with some symbolical representations for generator, transformers substation buses are used to represent a power system rather neatly. For example, the system shown in 2.6 with three lines will be simplified to figure 2.9 using single line.

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As another example, an interconnected power system is represented in the self explained figure 2.10 – it is hoped that you understand the important features communicated about the system through this figure. 

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