Transient Stability Software

Transient Stability

Transient Stability Analysis

Transient stability analysis enables engineers to accurately simulate power system dynamics and transients via system disturbances and other events. ETAP Transient Stability leverages detailed and validated equipment & protection characteristics, controls models and user-friendly graphical user defined modeling together with advanced algorithms to perform analysis for industrial to transmission power systems.

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Transient Stability Software Analytical Capabilities

  • Calculate Critical Fault Clearing Time (CFCT) & Critical Separation Time (CST)
  • Short & long-term transient simulations
  • Confirm generator rotor angle stability
  • Evaluate motor dynamic acceleration & reacceleration impact upon power restoration (brown-out)
  • Identification and testing load shedding (optimal as well as traditional relay based)
  • Computing and testing fast load transferring via fast bus transfers
  • Calibrate and evaluate relay settings
  • Generator start-up or black-start simulation (add-on module)
  • Transformer Inrush Analysis
  • Grid Code Compliance & Analysis (add-on module)
  • eMTCoSim™ - Phasor & EMT CoSimulation (add-on module)

Transient Stability Software Capabilities

  • Unlimited sequence of events & actions 
  • Simulate loss of excitation
  • Generator start-up
  • Induction and synchronous motor acceleration
  • Motor Operated Valve (MOV) starting
  • Motor load impact & ramp change
  • Automatic load shedding
  • Automatic relay actions based on relay settings & system responses
  • Handle multiple subsystems and islanding systems
  • User-controlled simulation parameters
  • Set & adjust exciter, AVR, turbine-governor or engine parameters
  • Integrated with User-Defined Dynamic Models (UDM) Program
  • Tie CB closing with auto synch-check action
  • Variable total simulation time & simulation step
  • Embedded Newton-Raphson and accelerated Gauss Siedel initial load flow methods
  • Faster calculation time by skipping tabular plots
  • Electrical Transient Stability Reporting
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Transient Stability Software Disturbance and Events

    • 3-phase & Line-Line, Line-Ground & Line-Line-Ground fault actions
    • Branch segment fault
    • Protective device open and close
    • Generator
      • input power adjustment
      • ovoltage set point adjustment
      • isoch / droop mode changes
      • field winding fault
    • Power Grid
      • Voltage drop impact and rise/swell
      • Frequency change
    • Motor
      • acceleration/reacceleration
      • acceleration using conventional starters
      • acceleration using conventional soft-starters
      • acceleration using conventional VFD
      • load adjustment
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    Transient Stability Software Modeling Capabilities

      • Complete synchronous & induction machine models
      • Comprehensive excitation system & turbine/engine-governor models
      • Static var compensator (SVC) model
      • High voltage direct current transmission (HVDC) model
      • Standard Power System Stabilizer (PSS) models
      • Electrical Transient Stability Dynamic Modeling
      • Frequency dependent modeling for synchronous machines (sub-transient models) and induction machines

      Videos

      Literature

      Transient Stability

      Transient Stability

      Transient Stability - Relay Controlled Actions

      Transient Stability - Relay Controlled Actions

      Transient Stability - Events and Actions

      Transient Stability - Events and Actions

      White Papers

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