per unit

Advantages of Per Unit and Percent Calculations

Power System analysis software are very expensive beyond the reach of small and medium enterprises. The only option, when fault analysis is required, is to perform calculations manually using available resources such calculators or desktop…



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Complex MVA Method

I have started a multi-part tutorial on Complex MVA Method. Part 1 presented the equations that we will be using for the Complex MA Method. This tutorial will be a bit more complicated than the…


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10 Reasons to Use Per unit

In the advent of computers, per unit or percent methods of calculations simplify short circuit calculations. J. Lewis Blackburn and Thomas J. Domin, in their book Protective Relaying, Principles and Applications, 3rd Edition, some of…


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