i am performing FLAT start test for PV plant connected to infinite bus . voltage and Active power plot show flat response. but Reactive power shows increment step up response for 4 second than show flat response . can any one help me to understand the reason and suggest some solution ?
Solutions to issues in dynamic runs are usually in a case-by-case scenario. If you can, provide more info about your test.
Check my post "flat run for pv plant" for some hints.
Check always the scale of your plots. After running a PSSe dynamic study, you can use PSSPLT to find the worst channels deviations using the idv file attached below. For deviation of Q channels, its is good to get 10E-02 or lower values: Sample from a flat start using savnw.sav:
CHANEL IDENTIFIER INITIAL VALUE DEVIATION TIME (SECONDS)
15 VARS 206[URBGEN 18.000]1 6.000 0.7153E-05 5.7375
16 VARS 211[HYDRO_G 20.000]1 0.1774 -0.4411E-05 9.1874
PSSPLT IDV file to get the max deviation of channels (adjust path an filenames):
MENU,OFF /* FORCE MENU TO CORRECT STATUS
PDEV
2,1,1
LOGs\SAVNW_wind_flat.err
ODEV
2,1,1
LOGs\SAVNW_wind_flat.err
text,* *************************************
text,* PLOT SAVNW_wind
text,*
text,* *************************************
CHNF
OUTs\SAVNW_wind_flat.out
RANG
1
SCAN
2 0 1
SAVNW_wind_MaxDevs.txt
4
1 2500
ANGL
20
1 2500
POWR
20
1 2500
VARS
20
1 2500
ETRM
20
STOP
Asked: 2020-06-01 23:05:54 -0500
Seen: 240 times
Last updated: Jun 02 '20
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