Transient Stability Software

Transient Stability

Transient Stability Analysis

Transient stability analysis enables engineers to accurately model power system dynamics and transients by simulating system disturbances and other events.

 

Transient Stability Software Key Features

  • Complete synchronous & induction machine models
  • Comprehensive excitation system & turbine/engine-governor models
  • Standard Power System Stabilizer (PSS) models
  • Electrical Transient Stability Dynamic Modeling
  • Integrated with User-Defined Dynamic Models (UDM) Program
  • Unlimited sequence of events & actions 
  • Automatic relay actions based on relay settings & system responses
  • Auto-sync check action
  • Short-time & long-time transient simulations
  • Variable total simulation time & simulation step
  • Tie CB closing with auto synch-check action
  • Embedded Newton-Raphson and accelerated Gauss Siedel initial load flow methods
  • Faster calculation time by skipping tabular plots
  • Frequency dependent modeling for synchronous machines (sub-transient models) and induction machines
  • Electrical Transient Stability Reporting
Transient stability study with plots and impedance curves

Transient Stability Software Capabilities

  • Simulate Generator Start-Up (optional feature)
  • Set & adjust exciter, AVR, turbine or engine parameters
  • Set speed governor parameters
  • Set & adjust control relays
  • Simulate loss of excitation
  • Induction and synchronous motor acceleration
  • MOV starting
  • Motor load impact & ramp change
  • Relay-controlled actions
  • Automatic load shedding
  • User-controlled simulation parameters
  • Handle multiple subsystems and islanding systems
  • Power system static var compensator (SVC) model
  • High voltage direct current transmission (HVDC) model
  • Calculate Critical Fault Clearing Time (CFCT)
  • Calculate Critical Separation Time (CST)
  • Fast load transferring
  • Load Shedding
  • Rotor Angle Responses

Simulate Disturbances & Operations

  • 3-phase & line-to-ground fault actions
  • Branch segment fault
  • Protective device open and close
  • Generator start-up
  • Generator
    • input power adjustment
    • voltage set point adjustment
    • isoch / droop mode changes
    • filed winding fault
  • Power Grid voltage drop and rise
  • Motor
    • acceleration/reacceleration
    • acceleration using conventional starters
    • acceleration using conventional soft-starters
    • acceleration using conventional VFD
    • load adjustment

Typical transient stability studies include identifying critical fault clearing time, checking generator rotor angle stability, assessing system stability margin, evaluating motor dynamic acceleration and re-acceleration impact, preparing and testing load shedding schedule, computing fast bus transfer timing, calibrating and evaluating relay setting and simulating generator start-up.

You can split a system or combine multiple subsystems, simulate automatic relay actions and associated circuit breaker operations, and start or auto-start motors. Combined with enhanced plotting and graphical results, engineers can truly use transient stability analysis program to master power system stability studies.

Video Tutorials

Generation Optimization for Microgrids

Generation Optimization for Microgrids

This webinar demonstrates how ETAP can help you optimally utilize limited power generation resources in an islanded or grid-tied microgrid environment.

Literature

Dynamics and Transients

Dynamics and Transients

Product Overview

Transient Stability - Events and Actions

Transient Stability - Events and Actions

Simulate any occurrence in an electrical system that may affect the stability limit of the power system in the Transient Stability module of ETAP.

Transient Stability

Transient Stability

Dynamic, Innovative, Sophisticated

Governor limit checking in transient stability studies

Governor limit checking in transient stability studies

Governor limits are exceeded during initial condition calculations.

Transient Stability – Relay Controlled Actions

Transient Stability – Relay Controlled Actions

The actions of relays can be integrated in the transient stability to resemble the true power system real operating conditions.

Transient Stability – Relay Controlled Actions

Transient Stability – Relay Controlled Actions

The actions of relays can be integrated in the transient stability to resemble the true power system real operating conditions.

White Papers