本帖最后由 Tms320 于 2009-12-27 17:46 编辑 , e% c5 S: a. ~- d* D. n$ U
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powerttech 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。 7 B, x! c+ m3 w( |/ f# i2 C6 bMain Features , J- P8 z6 c; Q6 w' U6 p, h/ \+ WModeling # y2 U1 `# O: O& W" b/ LSSAT accepts powerflow data in the native formats of DSAToolsTM (PSF and PFB), as well as other4 F4 i- h- t, _. [5 S; I" K
commonly used format such as PTI PSS/E format, GE PSLF format, and BPA format.$ X( q" h( K5 X) a8 B
Dynamic models of devices commonly represented for stability studies are available in SSAT. Data of 8 _7 w; l" w0 L, k: Q7 R) w9 l7 N- Zmodels can be in DSAToolsTM, PTI PSS/E, GE PSLF, BPA format.* Q9 t( @3 Q( F6 j C
The actual dynamic models used in an SSAT analysis can be customized from the data set provided in all8 f8 T0 s7 k% T4 W: @$ m
data files, by using the dynamic representation specifications. ' L/ s( _# O/ R1 k& Y" S5 y$ x* A
Computation options g( d$ \; q' h8 J9 X' Q
There are 11 computation options available in SSAT. These include:( I! {. |' Q+ F: }6 ^/ X: S( c" ^
(1) Complete eigenvalue analysis " l; {1 [; O4 b* q(2) Single-Machine-Infinite-Bus (SMIB) analysis- N9 y: T9 f- C0 N- f
(3) Single-Machine-Infinite-Bus (SMIB) scan for the entire system & |1 ^$ t0 w- o0 H. J(4) Eigenvalue analysis within specified frequency and damping ranges % c4 [1 `, p: ?3 Z6 k" r(5) Computation of modes closest to a specified frequency and damping 8 ^2 q |' z. z7 g8 O(6) Computation of modes related to a generator' F/ O" C- F) R" A( B/ i. N8 `
(7) Small-signal stability index for contingency ranking , \3 \; X2 a5 A( a- `( V(8) Time and frequency response calculations; ]# n& r; ~7 [
(9) Sensitivity analysis- ^; M# w% S6 c+ ~+ ?9 d- n
(10) Small-signal stability limit search9 ^, U# W7 p" W# _
(11) Mode trace