Stability Analysis Functions (RMS)

The RMS simulation tool in PowerFactory can be used to analyse mid-term and long-term transients under both balanced and unbalanced conditions, incorporating a simulation scan feature.  DIgSILENT Simulation Language (DSL) is used for model definition, and a large library of IEEE standard models is available.

  • Multi-phase AC networks, DC networks
  • Support of balanced and unbalanced grid conditions
  • Fast, fixed step size and adaptive step size algorithm
  • A-stable numerical integration algorithms supporting long-term stability simulations with integration step sizes ranging from milliseconds to minutes, individually selectable for each model
  • High precision event and interrupt handling
  • Simulation of any kind of fault or event
  • Transient motor starting (synchr./asynchr. machines)
  • Support of all protection library relays
  • Real-time simulation mode
  • Simulation scan feature, e.g. frequency scan, loss of synchronism scan, synchronous machine speed scan, voltage-/voltage recovery scan, fault ride through scan or common variable scan
  • Frequency Analysis Tool, including Fast Fourier Transform (FFT) and Prony Analysis for single point in time as well as time-range assessment
  • Combined RMS and EMT simulation mode (requires Electromagnetic Transients functions (EMT))

DIgSILENT Simulation Language (DSL) for Dynamic RMS Modelling

  • Graphical editor for drawing any kind of block diagram (AVR, prime mover, relay, etc.)
  • Fully flexible signal wiring schemes having access to any grid object and their parameters via definition of Frames
  • Nesting of frames and model building blocks
  • DSL for fully flexible definition of simulation functions via the DSL syntax
  • High precision built-in macros & functions
  • Automatic initialisation of complex, nonlinear models
  • Large built-in standard IEEE model library with fast precompiled models
  • Generic C interface for user-defined controller models
  • IEC61400-27-1 interface for external models
  • Automatic DSL-to-C interface converter
  • Support of MATLAB/Simulink interface
  • Optional: OPC interface for real-time applications
  • Optional: DSL Encryption function