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发表于 2011-3-30 04:48:22
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作点贡献:email from PTI:1 @4 x3 S6 H% b. i2 ^8 K, |8 g
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The model CBEST uses the auxiliary signal PAUX to modulate the power/ b7 M$ C" I' X7 [
PINIT set up at the initialization of the model. Note that the model9 Z: p6 s' V: N* `5 C; N' s7 s
does not have any dynamic blocks only limits on its P and MVA output./ |/ \- v8 Q4 R7 D$ E. |
0 g5 \+ C0 h! y: Q u+ AThe modulation of PINIT by PAUX is used to introduce damping into the
5 ~% F, d4 O# V! Z6 t& W+ Bsystem for electromechanical oscillatory modes (0.1 Hz to about 3.0 Hz).! I9 B" H1 A! T1 P2 y) o1 c
The signal PAUX is fed to model through the VAR(L), this VAR is the
4 E2 T; R5 x0 n2 @# coutput of an auxiliary-signal model (look up Chapter 12 of the PSSE/ w% C7 p; p" ?: D
Model Library section of the Program Operation Section) that uses local
& p# [. T7 |3 C$ e" Gfrequency deviation as input - PAUX1T and CPAAUT.& ]2 x( W6 }% ~
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Thus, the output of any these two auxiliary-signal models is similar to1 ?3 M3 d+ w& T, i1 p7 l
the output of a Power System Stabilizer using frequency deviation as& u! r- Y# ]* t* P d
input. So, unless you want to inject a damping power signal into the
2 Z* r3 R2 _( O4 W* a" b9 c! rsystem you do not need to use the signal PAUX.- B7 h/ k" \7 o. {' g4 B* P
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