Electromagnetic Transients (EMT)

PowerFactory provides an EMT simulation kernel for solving power system transient problems such as lightning, switching and temporary over-voltages, inrush currents, ferro-resonance effects or sub-synchronous resonance problems. Together with a comprehensive model library and a graphical, user-definable modelling system (DSL), it provides an extremely flexible and powerful platform for solving power system electromagnetic transient problems.

• Integrated simulation of electromagnetic transients
  in multiphase AC and DC systems
• Fast, fixed step size or adaptive step size algorithm
• Simulation of static var compensations (SVC), thyristor controlled series compensations (TCSC), FACTS, STATCOM, etc.
• Modelling of HVDC interconnections (rectifier/inverter, two-level VSC, half- and full-bridge MMC converter)
• Power electronic devices and discrete components (diode, thyristor, PWM converter, rectifier/inverter, DC valve, soft starter, etc.)
• Constant and frequency-dependent distributed parameter OHL models, universal frequency dependent cable model
  • OHL/Cable constants calculation
  • OHL transpositions
  • Single/multi-core and pipe-type cables
  • Cable cross-bonding
  • Semi-conducting layers
• Non-linear elements and saturation characteristics
• Series capacitors incl. spark gap model
• Surge arrestor models
• Impulse voltage & current source for lightning surge analysis
• Support of AC-DC inter-circuit fault events
• Accurate EMT models of renewable generation (wind/PV, etc.) and storage systems
• Discrete R-L-C elements
• Flexible template definition to create and re-utilise user-specific models library
• Insulation coordination analysis including temporary (TOV), switching (SOV) and lightning (LOV) transient over-voltages
• Stochastic switching analysis and point-on-wave (POW) switching
• Frequency Analysis Tool, including Fast Fourier Transform (FFT) and Prony Analysis for single point in time as well as time-range assessment
• Inrush, ferro-resonance, SSR and TRV studies
• COMTRADE file support
• Combined RMS and EMT simulation mode  (requires Stability Analysis functions (RMS))
• Various options of triggering breaker closer events

DIgSILENT Simulation Language (DSL) for Dynamic EMT Modelling

• Graphical editor for drawing any kind of block diagram
• Fully flexible definition of simulation functions and signal wiring schemes having access to any grid object and its parameters via definition of Frames
• Nesting of Frames and model building blocks
• High precision built-in macros & functions
• Automatic initialisation of complex, nonlinear 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
• OPC interface¹ for real-time applications
• DSL Encryption function¹

¹ Diese Funktion muss separat angefragt werden.