Load flow

The load flow package includes the following features:

  • Fast-decoupled load flow techniqueLoad flow parameters
  • Generator modelling
    • Control of local or remote busbar voltage to a given bandwidth
    • Reactive power limits
    • Reactive droop control
    • Simplified Grid infeed representation
  • Transformer modelling
    • Discrete tap-changers with tap limits and relay bandwidth
    • Compound voltage control on transformer tap changers
    • Vector shift specifications
    • Phase-shifting transformers (Quad-boosters), with power flow control
    • Reactance changes with tap position
    • Tap oscillation prevention controls
  • Load grouping and scaling
  • Induction machine modelling
    • Explicitly represented
    • Single & double cage motors
    • Start-run (test data) or inner-outer impedance formats
    • Doubly-fed machines for wind turbine modelling
    • Torque-speed curve representations
  • Multiple sets of line ratings for overload checks
  • Zero impedance lines (unlimited, including loops)
  • Mechanically switched capacitor banks
    • Voltage control
    • Advanced sharing algorithm
  • Static VAr compensators
  • Universal Machines
    • General purpose PQ shunt-type devices
  • Fully integrated AC / DC components
    • Static converters (line commutated and PWM)
    • DC machines (shunt and series)
    • Motor - Generator sets
    • Batteries
  • Option to check overcurrent protection device operation after a load flow
  • Flat starting, including optional resets of transformer taps, locking of transformer taps and setting of induction machine slips
  • Power flows shown on diagram including MVA, MW / MVAr, kA
  • Control over results display precision
  • Overloads and out-of-range voltages highlighted on diagram and in reports
  • Diagram can display component colours, nominal voltage colours or per-unit voltage colours
  • Fully integrated AC / DC components
    • Static converters (line commutated and PWM)
    • DC machines (shunt and series)
    • Motor - Generator sets
    • Batteries
  • Option to check overcurrent protection device operation after a load flow
  • Flat starting, including optional resets of transformer taps, locking of transformer taps and setting of induction machine slips
  • Power flows shown on diagram including MVA, MW / MVAr, kA
  • Control over results display precision
  • Overloads and out-of-range voltages highlighted on diagram and in reports
  • Diagram can display component colours, nominal voltage colours or per-unit voltage colours