Transient Stability Software

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Transient Stability

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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.

Videos

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.