Harmonics

Harmonic analysis predicts the harmonic distortion impact of power electronics and other harmonic sources on the A.C. busbars of the system. The harmonics module includes:Harmonics analysis dialog

  • Harmonic current injections
    • N-pulse based on static converter operating point
    • N-pulse based on PWM converter operating point
    • User-defined in system per-unit base
    • User-defined proportional to converter power level
  • Harmonic voltage sources
    • User-defined impedances
  • Harmonic filters
    • Single tuned
    • Single tuned Hipass
    • Double tuned
    • C Type
    • Estimation of parameters from metrics (Q factor etc.), and vice-versa
  • Harmonic voltage display
    • Total Harmonic Distortion on diagram
    • Maximum individual on diagram
    • Specified harmonic on diagram
    • Waveform for selected busbar
    • Spectrum for selected busbar
  • Harmonic impedance display
    • Busbar real / imaginary plot
    • Busbar magnitude/phase linear plot
    • Busbar magnitude log plot
  • Full listing shows individual branch and machine harmonic flows
  • Distributed parameter model for lines
  • Four types of harmonic load models
  • Three types of line and transformer models
  • Two types of shunt model
  • Extra calculation options for harmonic distortion, frequency deviation and sequence network overrides.