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Sequence analyzer

The Sequence analyzer component outputs the magnitude and phase of the zero-sequence (0), the positive-sequence (1) and the negative-sequence  (2) of a set of three balanced or unbalanced signals. Input signal can be a three phase voltage or current.

Symbol

Mask Parameters

NameDescriptionUnitVariable = {Possible Values}
DescriptionUse this field to add all kinds of information about the component
Description = {'string'}
Fundamental frequencyFundamental frequency used for the calculation of the magnitude and phase of the zero-sequence (0), the positive-sequence (1) and the negative-sequence  (2). This value cannot be modified during the simulationHzFnom = { [0, 1e12] }

Input/Output Signals

Name

Description

Type

abc

Vectorized signal that can contain phase-to-ground voltages (Va, Vb and Vc) or phase-to-ground currents (Ia, Ib and Ic)

Input

Mag120

Vectorized signal containing the amplitude of the zero-sequence, positive-sequence and negative-sequence component of the input signal

Output

Pha120

Vectorized signal containing the phase of the zero-sequence, positive-sequence and negative-sequence component of the input signal

Output

Sensor Descriptions

Name

Description

Unit

abc[a]

Signal that may contain the voltage or current of phase A

V or A

abc[b]

Signal that may contain the voltage or current of phase B

V or A

abc[c]

Signal that may contain the voltage or current of phase C

V or A

Mag120[Mag0]

Signal containing the amplitude of the zero-sequence component of the input signal

V or A

Mag120[Mag1]

Signal containing the amplitude of the positive-sequence of the input signal

V or A

Mag120[Mag2]

Signal containing the amplitude of the negative-sequence component of the input signal

V or A

Pha120[Mag0]

Signal containing the phase of the zero-sequence component of the input signal

deg

Pha120[Mag1]

Signal containing the phase of the positive-sequence of the input signal

deg

Pha120[Mag2]

Signal containing the phase of the negative-sequence of the input signal

deg

Internal Circuit of the Component


Example Model

This example shows the use of the Sequence analyzer block to compute the three sequence components of a three-phase unbalanced signal.

Note that the following demo requires that users edit the ScopeView template, and replace the existing .oprec data source with the data generated during the simulation.

Simulation results


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