## September 23, 2012

### What do you mean by Positive Sequence, Negative Sequence and Zero Sequence network?

When an unbalanced fault occurs, we need a way to easily analyze the network. Positive Sequence, Negative Sequence and Zero Sequence network is three method which used to determine and calculate fault in a three phase AC transmission and distribution.

positive sequence with positive frequency, negative sequence with negative frequency, and zero sequence which are constant.
 Figure: Typical Sequence Network Diagram

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