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PV analysis

asked 2014-07-02 05:27:03 -0600

christanbull86 gravatar image

Dear friends,

When I run PV analysis and I got the message "Messages for api PVENGINE6. No in-service buses in subsystem "WORLD" (004269)". Then the program PSSE stops. But I can run QV analysis normally.

Please help me.

Thank you so much.

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Comments

It sounds like it might relate to how your source and sink subsystems are defined. Can you show your subsystem definition, and confirm that they have in-service generators and loads? If you are running the PV via Python, please include that line of code too.

Eli Pack gravatar imageEli Pack ( 2014-07-02 21:49:35 -0600 )edit

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answered 2014-07-06 18:24:16 -0600

Eli Pack gravatar image

Okay, your main problem is that you only have one subsystem defined ('A'). Now, PV analysis is inherently different to QV analysis. When performing PV analysis, you need to define a source and a sink. As the process is progressed, more power will be transferred through a cutset of lines by adjusting the load/generation in the source and sink subsystems.

Your subsystem (SUB) file should be something like this:

SUBSYSTEM 'SOURCE'
   BUS 100
END
SUBSYSTEM 'SINK'
   BUS 101
   BUS 102
   BUS 103
   BUS 104
   BUS 105
   BUS 106
END
END

Your MON file can then reference the SINK subsystem (or SOURCE if you want to include that too):

MONITOR LINES IN SUBSYSTEM SINK
MONITOR VOLTAGE DEVIATION ALL BUSES 0.1
END
END

Finally, your contingency file might look like this:

SINGLE BRANCH IN SUBSYSTEM 'SINK'
SINGLE BRANCH IN SUBSYSTEM 'SOURCE'
END

The things to be careful about:

  • Take care selecting your source and sink subsystems. You should choose a sink on one side of your cutset, and a source on the other. Voltage will likely collapse in the sink.
  • In the "transfer dispatch method" section, you can determine whether you want to increase flow on your cutset by controlling generation or load in each of the source and sink areas. Play with these if you are getting errors (since your network is so small, you will need to make sure you have load or generation in the area that you pick—For the above example, I picked DFAX generation for both).
  • Make sure you select your "SOURCE" subsystem and "SINK" subsystem in the subsystem selection above the DFAX file (which you will need to regenerate).
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answered 2014-07-03 02:52:10 -0600

christanbull86 gravatar image

Dear friend,

Thank you so much for your comment. However, I put all machines and loads in "Service", I still have the same problem. If you don't mind, please give me your email then I send my file ( sav, con, mon, sub). Please run PV analysis and help me to solve the error. Thank you so much.

Regards,

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Comments

Dear friend, I sent the files to your email. Please check them. Thank you so much.

christanbull86 gravatar imagechristanbull86 ( 2014-07-04 02:13:04 -0600 )edit
1

Dear Eli Pack, Thank you very much for your help. The problem is solved. Regards,

christanbull86 gravatar imagechristanbull86 ( 2014-07-06 23:56:01 -0600 )edit

I'm running PV for IEEE 9bus and have an similar error. I can't solve it. Can you help me?

melia4 gravatar imagemelia4 ( 2017-03-15 23:12:08 -0600 )edit
0

answered 2017-02-07 19:29:18 -0600

curiouscase gravatar image

updated 2017-02-07 20:29:32 -0600

jconto gravatar image

Hi, Im trying to run the PV analysis on the IEEE 14 bus system and it keeps giving me an error stating : No participating dispatch buses in study system 'SOURCE'. The following is my .sub file

SUBSYSTEM 'SOURCE'
  BUS 1
END

SUBSYSTEM 'SINK'
  BUS 2
  BUS 3
  BUS 4
  BUS 5
  BUS 6
  BUS 7
  BUS 8
  BUS 9
  BUS 10
  BUS 11
  BUS 12
  BUS 13
  BUS 14
END
END
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Comments

Bus 1 is a type 3, the swing bus. Since PV is a steady state process, it requires a swing bus to adjust for power unbalance during a load flow solution. Being the only 'source' element, it cannot be adjusted by the PV process and then re-adjusted by its swing bus property, resulting in an error.

jconto gravatar imagejconto ( 2017-02-07 21:00:54 -0600 )edit

In summary, The IEEE14 case is not suitable for a PV run for your subsystem setup. You can set type 2 generators as the source and some (or all) loads as the sink.

jconto gravatar imagejconto ( 2017-02-07 21:07:24 -0600 )edit

Hey, thanks for your quick response. So, do i exclude the swing bus completely from the .sub file?

curiouscase gravatar imagecuriouscase ( 2017-02-07 23:58:13 -0600 )edit

yeah, try that.

jconto gravatar imagejconto ( 2017-02-08 09:04:16 -0600 )edit

so, that doesnt work too. Does every subsystem need to have a type 2 generator for PV analysis to work?

curiouscase gravatar imagecuriouscase ( 2017-02-08 11:33:13 -0600 )edit
0

answered 2014-07-06 21:54:24 -0600

jconto gravatar image

Check the post "How PV Analysis work?" as well as "Can anybody help me with PV analysis in PSSE please?" and download the python files to run a script-based PV study.

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Dear friend, i run pvf analysis as explained by the most of expert in this platform, i got a good result but i face a big problem, all contingincies are ine the zone that i selected in the sink area but i dont understand why in the bus voltage column the excell file show only buses in 60kV

yaya gravatar imageyaya ( 2017-04-26 04:38:15 -0600 )edit

The monitor (*.mon) file identifies which 'variables' are available for output (typical command line follows), monitor voltage range areas 1 99 kvrange 130 400 0.92 1.04

jconto gravatar imagejconto ( 2017-04-26 10:03:56 -0600 )edit

this is my mon file MONITOR TIES FROM SUBSYSTEM 'ZONE_ETUDE' MONITOR VOLTAGE RANGE KV 400 0.937 1.087 MONITOR VOLTAGE RANGE KV 225 0.910 1.087 MONITOR VOLTAGE RANGE KV 150 0.90 1.10 MONITOR VOLTAGE RANGE KV 60 0.90 1.10

yaya gravatar imageyaya ( 2017-04-27 03:23:28 -0600 )edit

but he show me all the buses and not only the buses in 'ZONE_ETUDE'!! how i can solve that problem? and also in column generator dispatch i see generator different form the area that i selected in 'ZONE_ETUDE'

yaya gravatar imageyaya ( 2017-04-27 03:32:41 -0600 )edit

In the mon file, the first line only check flow of ties. The next 4 lines monitors bus voltages at those kv levels (all buses?!) . The gen table show gens at the selected kv levels. for buses only a subsystem, enter [psee manual POM 8.1.3]: MONITOR VOLTAGE RANGE SUBSYSTEM 'ZONE_ETUDE' 0.9 1.1

jconto gravatar imagejconto ( 2017-04-27 20:54:17 -0600 )edit

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Asked: 2014-07-02 05:27:03 -0600

Seen: 2,910 times

Last updated: Feb 07 '17