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answered Aug 16 '12

waltterval gravatar image

That could be or not for incorrect data. Blown up is relationed with the change in Deltavmag / vmag between iterations.

Before you run FNSL you must check:

  1. MW dispatched on machines
  2. VSched onplants
  3. Status of shunts

Then run FNSL with Flat start

If blow up persist try:

  1. Ignore reactive limit
  2. Block tap changer
  3. Block switched shunt
  4. Use other solution algorithm
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No.2 Revision

That could be or not for incorrect data. Blown up is relationed with the change in Deltavmag / vmag between iterations.

Before you run FNSL you must check:

  1. MW dispatched on machines
  2. VSched onplants
  3. Status of shunts

Then run FNSL with Flat start

If blow up persist try:

  1. Ignore reactive limit
  2. Block tap changer
  3. Block switched shunt
  4. Use other solution algorithm

I don't have a code to do the chek, but I think the following one is a good start

# OVERLOADED MACHINE SUMMARY
psspy.geol(0, 1, 1)
# GENERATORS AT VAR LIMITS:
psspy.gens(0, 1, 2, 0)
# TRANSFORMERS CONTROLLING VOLTAGE (VIOLATIONS)
psspy.tlst(0, 1, 1, 0)
#switched shunts
ierr, iarray = psspy.aswshint(sid = -1, flag = 2, string = ['NUMBER', 'STATUS'])
print iarray