I found a set of parameters of SEXS excitation model in a thesis. But when I put them into PSS/E, it turned up some warnings about the settings as follows. But I don't know why these warnings showed. I wondered what the proper range of each parameter is. Please help me with this problem!
I would appreciate it very much!
Parameters of SEXS: TA = 1; TB = 4.0 K = 200 TE = 0.02 EMIN = -4.6000 EMAX = 6.0
There may be warnings even for proper parameters, so the warnings are only an indication.
The limits for warnings are described in Program Application Guide, Vol II, Chapter 26.5. DOCU,CHECK gives the following report:
Model SEXS Bus 3011 [MINE_G 13.800] Machine "1 " :
TB = 4.0, outside of range > 5.0 and < 20.0
K = 200.0, outside of range > 20.0 and <= 100.0
TA/TB= 0.2500 K= 200.0000 TRANSIENT GAIN= 50.0000
EMIN = -4.6, not = 0.0
C O N S S T A T E S
133-138 50-51
TA/TB TB K TE EMIN EMAX
0.250 4.000 200.0 0.020 -4.60 6.00
The used exciter has a very short exciter time constant (20 ms), which means that the block is ignored in a 50 Hz system with simulation step 10 ms.
The transient gain is 50 which is high, resulting in a fast response in field voltage.
Asked: 2021-06-05 02:24:54 -0500
Seen: 1,052 times
Last updated: Jun 05 '21
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