关于ETAP你知道多少？

RT 最近用到这个软件 ，大家对这个熟悉程度如何 盼指教

阿来简单介绍一下啊，不过可是英文喔！
ETAP-Electrical Transient Analyzer Program
  ETAP is a computer based software tool to provide solution for power system analysis, design and meeting operation needs, it is a fully graphical software package and was developed by Operation Technology, Inc. (OTI) USA .
ETAP program main capabilities
  1.Load flow study
  2.Short circuit study
  3.Motor Acceleration study
  4.Harmonic study
  5.Transient Stability study
  6.others

有没有用过的 ？
给咱指点一二