Erandika's profile - activity

Hello everyone, I'm having trouble in figuring out the cause for the following initial conditions suspect.

 INITIAL CONDITIONS SUSPECT:
 I   DSTATE(I)    STATE(I)     MODEL             STATE     BUS#-SCT X-- NAME --X BASKV  ID
  83630   0.69850E-04 -0.68402E-02 CMLDBLU2           K+1     10000     Load 1   12.500  1
  83632   0.59582E-04  0.17921E-02 CMLDBLU2           K+3     10000     Load 1   12.500  1

I want to figure out if this happens due to a model error or due to a voltage issue. Thank You

Yeah, I did. I initialized the case after correcting the generators.

No, I have mentioned a part of the initial conditions suspects in this post. There are about 70 of CMLDBLU2 suspects in the original log file. I'm doing this dynamic simulation for a large power system.

Hello, yeah I figured out it and could solve it. But I'm trying to solve the CMLDBLU2 models. Any comments to start with would be appreciated.

Hi everyone,

I'm performing a dynamic simulation for a large power system, and I got initial condition suspects for CMLDBLU2 models. Could someone help me understand how to resolve it, thanks.

 INITIAL CONDITIONS SUSPECT:
     I      DSTATE(I)       STATE(I)        MODEL      STATE     BUS#-SCT X-- NAME --X BASKV  ID
  71628     0.97520E-02     0.73156         GGOV1       K+2     1           GEN 1       18.000  1
  78978     -0.10885        2.2293          PIDGOV      K+6     2     GEN 7G6     7.2000  6
  79078     0.13712         0.89890         HYG3U1      K+6     3     GEN 13G4    13.200  4
   96758    0.72085E-04     -0.15771E-02    CMLDBLU2    K+7     4     CHQ-230     230.00  2
  96764     0.10331E-03     -0.15771E-02    CMLDBLU2    K+13    4     CHQ-230     230.00  2
 140223     0.45542E-04     -0.41939E-02    CMLDBLU2    K+2     6     LOAD 2      115.00  N
 140545     0.55042E-04     -0.33355E-02    CMLDBLU2    K       7     LOAD 2      115.00  1
 142059     0.46939E-04     -0.36872E-02    CMLDBLU2    K+2     10    LOAD 5      115.00  N1
 142464     0.46660E-04     -0.45174E-02    CMLDBLU2    K+2     11    LOAD 6      115.00  1
 143623     0.51479E-04      0.10855E-02    CMLDBLU2    K       12    LOAD 7      115.00  1

Cascaded tripping of the load model "CMLDBLU2"

Hi, I'm doing a transient simulation where I use "CMLDBLU2" composite load model to represent all the network loads. However, cascaded tripping occurs when simulating for line faults (the fault duration is 0.1s). Prior to transient simulation, I performed no disturbance analysis and steady state contingency analysis and the voltage profile and loading levels seems good. So, is there any suggestion to avoid the cascaded tripping?

Yes, WSIEG1 model

Hi,

Is there any method to change the generator power output during a dynamic simulation?

For ex: Pout initial = 600 MW, Pout after disturbance = 400 MW

I tried CHANGE_GREF function and INCREMENT_GREF functions. But I do not see any change happened for the power output in the plots.

Hello,

I'm getting an error, " Encountered an improper argument", when opening a snapshot file

What are the possible causes of getting this type of an error?

I'm automating PSSE for a dynamic simulation and I came across this batch command :

"BATDISTBUS_FAULT IBUS UNITS BASEKV VALUES(1) VALUES(2)"

When defining a fault impedance/admittance here, we can define it by MVA. But I'm not sure what they mean by defining a fault impedance/ admittance in MVA.

Can anyone explain me the formula for this?