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发表于 2011-3-30 04:48:22
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作点贡献:email from PTI:" }3 m9 ]+ P* f6 \
4 U6 _8 K, c/ |; t4 \6 tThe model CBEST uses the auxiliary signal PAUX to modulate the power
. f+ C ]& z: _# W5 m# x& Q! iPINIT set up at the initialization of the model. Note that the model8 t+ k- F; R$ g
does not have any dynamic blocks only limits on its P and MVA output.
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The modulation of PINIT by PAUX is used to introduce damping into the
5 p5 b2 j, P1 jsystem for electromechanical oscillatory modes (0.1 Hz to about 3.0 Hz).
3 v, V. i5 `4 `) x" iThe signal PAUX is fed to model through the VAR(L), this VAR is the* X/ Q1 ^8 O7 l8 x3 w' E6 o/ c( y8 N$ d
output of an auxiliary-signal model (look up Chapter 12 of the PSSE
3 a: Q' x8 t( \% d( ?, g4 o* gModel Library section of the Program Operation Section) that uses local! r* l$ o: u: v& P1 R i
frequency deviation as input - PAUX1T and CPAAUT.
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. d L) D. Y# W! ~' ?Thus, the output of any these two auxiliary-signal models is similar to
, g+ e9 ~* A8 Uthe output of a Power System Stabilizer using frequency deviation as9 P' S$ `# C+ q
input. So, unless you want to inject a damping power signal into the0 F9 n7 d$ D7 }1 p& r
system you do not need to use the signal PAUX./ T+ @; ?) n4 d
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# b- v! J+ y3 l; S) K" F9 A* BRegards, |
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