# Power Measurements

Summary of the Power Measurements components available through the Signal Processing toolbox in Schematic Editor.

The toolbox provides four Power measurement components. Their descriptions and supported features are given in Table 1.

Component | Description | Features | Help file | ||
---|---|---|---|---|---|

supported input types | supported output types | vector support | |||

Phase Difference |
Calculates phase difference between the input signals. | real | real | no | Phase Difference |

Single Phase Power Meter |
Computes active and reactive power for single phase systems. Inputs are the instant voltage and current. | real | real | no | Single Phase Power Meter |

Power Meter |
Computes active and reactive power (both instantaneous and average), apparent power and power factor for three phase systems. | real | real | no | Power Meter |

Positive, Negative and Zero Power Meter |
Calculates the positive, negative and zero power sequence for input signals. For successful operation of the block it is necessary that 1/(frequency*execution rate) is integer greater than 4. |
real | real | no | Positive Negative Zero Power |

Single Phase Phasor |
Calculates phasor (magnitude and angle) of the input signal. | real | real | no | Single phase phasor |

Three Phase Phasor |
Calculates phasors (magnitude and angle) of the input signals. | real | real | no | Three Phase Phasor |

Symmetrical Components |
Gives phasors of symmetrical components of input signals. For successful operation of the block it is necessary that 1/(frequency*execution rate) is integer greater than 4. | real | real | no | Symmetrical Components |

Harmonic Analyzer |
Calculates amplitude, phase and frequency of chosen harmonics. Outputs are scalars if Hamonic order value is scalar, if Hamonic order value is python list, outputs will be vectors. Component consists of two parts, where one part works on faster execution rate and the other one on slower. Slower part is used to calculate FFT. | real | real | no | Harmonic Analyzer |

THD Measurement |
Calculates total harmonic distortion of observed signal, it is based on THD+N
approach. Component basically consists of two components, first one is buffer which has to work on faster execution rate, and the second one has to work on much slower execution rate. Component with slower execution rate is used for FFT calculation and other needed arithmetic. |
real | real | no | THD (Total Harmonic Distortion) Measurement |