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"Connection Tables Full" when running dyre for dynamic simulation

asked 2013-11-14 17:41:54 -0500

wassup_doc gravatar image

updated 2013-11-14 20:02:10 -0500

Hello,

I am using psspy.dyre_new() to load the generator, exciter, governor, and relay models into PSS/E. I am getting a warning message in the command line output as follows:

Generator models use:
CONS        1-   140
STATES      1-    60

Excitation System models use:
CONS      141-   280
STATES     61-   100
VARS        1-    10

Turbine Governor models use:
CONS      281-   350
STATES    101-   130
VARS       11-    20

LINE RELAY MODEL Connection tables full--use pack models function

SUMMARY OF MODELS READ:

GENS:  GENROU
      10

EXSYS: IEEET1
      10

GOVS:  IEEEG2
      10

RELAY: TIOCR1
       2

NEXT AVAILABLE ADDRESSES ARE:
CON  STATE    VAR   ICON
365    131     24     16

Only PSS/E supplied models in case. Compilation is not required

LINE RELAY MODEL TABLES ALREADY PACKED:
Connections from Branches to Models:  1(Old)    1(New)    1(Maximum)
Pointers from Models to Data:         1(Old)    1(New)    2(Maximum)

Here is what I do not understand:

  1. Under "models use" it does not list any of the relay models, but in "models read" it lists both relays.
  2. The output suggests to fix the problem with the "Pack models function"... I found and used psspy.rlmod_pack() but it does not seem to do anything to fix the issue.
  3. If I use 1 relay model I do not get this message vs. >1 relay model, the functionality of all the relays go away (even the first one that did work).
  4. Psse lists the next available con, state, var, icon addresses, but apparently they cannot be used?

Eventually I would like to load about 50 relay models to the dynamic working case. I am modeling the old case 39 New England, and I feel like PSS/E should easily be able to do this. (Though I am new to PSS/E).

If anyone has any insight into what I am doing wrong that would be appreciated. BTW - I am using the PSSE33 Free University version. I am starting to think that I have simply found a limitation of the free version (the number of dynamic models you can initialize)... but then again they claim the only limit to the university version is initialization to <50 buses.....

Thanks.

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I am especially concerned about the last two lines above. -- They are the output of psspy.rlmod_pack() -- the output seems to state that the max connection from branch to model is 1 and from model to data is 2... does this mean I can only add 1 Relay?? Seems absurd.

wassup_doc gravatar imagewassup_doc ( 2013-11-15 12:31:58 -0500 )edit

Still have not figured this out. I suppose I will have to write my own basic "Relay" class in python. I will implement the relays outside of PSSE and use the output to manually open lines. Brute force - I know - but I do not have access to the full version of PSS/E.

wassup_doc gravatar imagewassup_doc ( 2013-11-21 22:42:25 -0500 )edit

PSSE support will also not answer any questions about the limitations of the free version either :(

wassup_doc gravatar imagewassup_doc ( 2013-11-21 22:42:53 -0500 )edit

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answered 2013-11-14 20:11:59 -0500

jconto gravatar image

With PSSe set to run with 'dimension' 12k buses I am able to model a network with 5k buses and 2k dynamic models. For more modeling capacity the dimension is set to a larger number. I think your modeling limitation is due to the free university model. Test it with a 2-to-5 bus system.

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@jconto - Makes sense. However, I just tried removing the governor and exciter models to free up model space, and still I cannot add more than 1 relay. Any ideas?

wassup_doc gravatar imagewassup_doc ( 2013-11-15 12:12:22 -0500 )edit

Psse education version only allows 1 relay model. You can't add more than 1 relay model

txc gravatar imagetxc ( 2019-03-05 21:52:06 -0500 )edit

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Asked: 2013-11-14 17:41:54 -0500

Seen: 1,038 times

Last updated: Nov 14 '13