Zhnoob
21 ●9 ●10 ●13

Hi, I am modeling an BESS and with one load and one normal generator, the dynamic parameter of BESS is from jconto's example(using REECCU1 and REGCA1), the others parameter are as below:

//Generator

1,'GENROU',1 6.00 0.05 0.535 0.05 3.33 0.67 1.72 1.66 0.23 0.37 0.21 0.10 1.01 1.02 /

//Exciter

1 'AC1C' 1 0 0 0.0000 0.0000 0.0000 400.00 0.20000E-01 14.500 -14.500 0.80000 0.30000E-01 1.0000 0.20000 0.38000 1.0000 4.1800 0.10000 3.1400 0.30000E-01 6.0300 -5.4300 99.000 0.0000 /

// governor

1, 'IEESGO', 1, 25.0, 0,1.0,1.0,12.5, 0, 5.0,3.0,0.5, 1.0, 0,/

2,'USRMDL',1,'REGCAU1',101,1,1,14,3,4, 1, 0.02,10.0,0.9,0.5,1.22, 1.2,0.8,0.4,-1.3,0.02,0.7,9999.0,-9999.0,1.0, / Generic RE Converter model

2,'USRMDL',1,'REECCU1',102,0,5,45,7,6, 0,0,1,0,0, -99.0,99.0,0.0,-0.05,0.05,0.0,1.05,-1.05,0.0,0.05, 0.436,-0.436,1.1,0.9,0.0,0.1,0.0,40.0, 0.02,99.0,-99.0,1.0,0.0,1.82, 0.02,0.0,0.0,0.0,0.0,0.0, 0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0, 100.0,1.0,1.0,0.0, / Electrical Control Model for Utility Scale Battery Energy Storage

The problem I have is as follow:

1.How to adjust the machine parameter used in dynamic simulation? Before adding the exciter the non-disturbance simulation will get flat lines for the monitored variables, but after adding the exciter the initial condition is never OK, and the error message is about state K+2, means the output of the exciter maybe? How could I fix it? (I am also trying to use it in IEEE 9bus system, but the exciter have the same problem also.)

  INITIAL CONDITIONS SUSPECT:
  I   DSTATE(I)    STATE(I)     MODEL             STATE     BUS#-SCT X-- NAME --X BASKV  ID
  9   -4.7285       3.0133      IEEET1             K+2         1     MACHINE     230.00  1

2.If I am going to use the BESS to introduce the active power, is there any difference between (1)changing the Paux in VAR of REECCU and (2) use the plant controller to control active power.

3.If the plant controller is needed, Is there any example or parameter for the plant controller REPCA1, I have tried the parameter in jconto's SMIB_BESS but it seems to have some initial condition problem, or do I mess up some thing?

I am new to PSS/E and python, but any suggestion will ... (more)

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answered 2023-09-08 17:22:33 -0600

jconto
2701 ●10 ●30 ●41

Dynamic setups are always unique. Some comments:

- Make sure that the steady state case converges and there is no limit violation on dynamic devices (gens) 
- The "Initial Condition Suspect" table shows model IEEET1 being reported but its dyr data is not posted in the section above.
- Q1: To tune the IEEET1 exciter, check if changing the value of a gain parameter(s) like k2 would resolve the problem.  See model block diagram in manual "Models".
- Q2: Use the plant controller (walk before run principle)
- Q3: The original run of SMIB_BESS does not have an initial condition problem. Go to first comment.

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