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zero sequence impedance
2

zero sequence impedance

zero sequence impedance

(OP)
hi ...
what is zero seq impeadance? were does it come from?

RE: zero sequence impedance

2
What is zero sequence impedance? Is the impedance that equipment or electrical network sees if energized with a single-phase power source in each phase.

Were does it come from?  C.L. Fortescue first introduced it in 1918 while working for Westinghouse to resolve unbalanced phasors of a three-phase system using the symmetrical component method.

This method decomposes a three-phase system into three distinct sets of symmetrical components: a positive sequence component, a negative sequence component, and a zero sequence component.

As you see, the sequence components (including the zero sequence) is a mathematical tool used to simplify the solution of unbalance system problems.

For additional graphic details see the enclose site: http://xnet.rrc.mb.ca/janaj/1_2_1_symmetrical_comp...

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