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PowaGen®
is used to perform basic synchronous generator transient stability assessments. It models two synchronous generators operating against an infinite bus, together with loads, transformers and interconnections. The fault impedance for the post fault network can be modified as required to represent various fault and protection switching scenarios. It provides a first pass assessment on whether generator instability or pole slipping are likely to occur for given protection clearance times and network parameters.
 

Modelling Limitations:

  • The study is based on a three phase faults.  
  • Generators are represented as a constant transient reactance. 
  • Effects of AVR's and Governors are not included.
  • Only synchronous frequency currents and voltages are considered. DC offset currents and harmonic currents are neglected.

Example input/output screenshots are shown below - click on thumbnails to enlarge