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2 h) [* d0 ~ P }% x4 O3 M+ Mpowerttech 的DSA是用于系统稳定性分析的强大工具，SSAT是其中用于系统小干扰建模的模块。% v" H1 \) k- w3 R8 K
Main Features1 N% s1 p# A- v# e4 g. w( ?
Modeling3 M' [! R) y$ N
SSAT accepts powerflow data in the native formats of DSAToolsTM (PSF and PFB), as well as other 2 ^% m. U2 a6 e; bcommonly used format such as PTI PSS/E format, GE PSLF format, and BPA format.& t+ g& y {* u( Q6 b
Dynamic models of devices commonly represented for stability studies are available in SSAT. Data of) p3 k1 _, p! J" C) R
models can be in DSAToolsTM, PTI PSS/E, GE PSLF, BPA format.; m9 W! Z6 s' w/ y3 b, @
The actual dynamic models used in an SSAT analysis can be customized from the data set provided in all- g n6 `0 w% g3 @
data files, by using the dynamic representation specifications. ' _: o, r2 M' t, o- t# n
5 w8 h' J% S5 dComputation options 8 ]# t6 P# r7 N' y7 _There are 11 computation options available in SSAT. These include:* Z7 u, E5 W) z& g' Q4 o7 ^9 A
(1) Complete eigenvalue analysis - Z0 [. M% K* E' N& D(2) Single-Machine-Infinite-Bus (SMIB) analysis ; D8 S3 ~6 Q9 b! ^(3) Single-Machine-Infinite-Bus (SMIB) scan for the entire system- } I9 o$ | u6 Q; j6 G# _
(4) Eigenvalue analysis within specified frequency and damping ranges ~& t$ r0 t2 U2 t2 j$ t(5) Computation of modes closest to a specified frequency and damping* O" h+ r- ~3 T9 H& e" t
(6) Computation of modes related to a generator2 y. l2 n0 ^; F5 ^8 g: Q, w/ Z9 h
(7) Small-signal stability index for contingency ranking 9 R, t* H: V Y) |0 T+ A(8) Time and frequency response calculations ' l9 |/ `8 R' }3 k; Z! z1 l. |% A8 z(9) Sensitivity analysis 4 D1 g; F3 f0 J3 R- C# ^* r(10) Small-signal stability limit search7 I: X$ `$ I3 x( {* G& \
(11) Mode trace
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