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发表于 2011-3-30 04:48:22
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作点贡献：email from PTI:
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# i1 i5 K. o5 ]" V5 h) }+ n& `The model CBEST uses the auxiliary signal PAUX to modulate the power
$ f% g3 g: O% A8 zPINIT set up at the initialization of the model. Note that the model+ l* o& ], S) D, w; X" f
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
+ w, j. U9 J, n. _ Y" \system for electromechanical oscillatory modes (0.1 Hz to about 3.0 Hz).% p( e- I/ h! s% {
The signal PAUX is fed to model through the VAR(L), this VAR is the
3 _1 q! U8 S1 _0 c4 k4 w+ O5 Coutput of an auxiliary-signal model (look up Chapter 12 of the PSSE
% c9 `2 @; c3 \% C& KModel Library section of the Program Operation Section) that uses local
7 b( `8 J$ j; F0 A2 ?/ q6 N$ C' j. `frequency deviation as input - PAUX1T and CPAAUT.+ R( f0 s( ]0 e9 T: g9 g, r
9 _( u7 u% n+ a5 g) B0 P8 U0 d3 ?Thus, the output of any these two auxiliary-signal models is similar to" N! K& q: G; n6 E
the output of a Power System Stabilizer using frequency deviation as
2 n- |9 a0 ^2 Z" winput. So, unless you want to inject a damping power signal into the* v! T; z3 h2 j- n( M C4 I
system you do not need to use the signal PAUX./ R5 x& e8 j5 s+ D8 i
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