i have a problem with set_param command. please help me

hi. i simulate a power system with the Static var compensator(svc). now i want to change a parameter (ki) into svc block from mfile with set_param command.command is:

set_param("powersystem/svc",'ki',10)

But this error is given:

svc (Phasor Type) block (mask) does not have a parameter named 'ki'.

please help me.

Answer 1

[Kaustubha Govind]

It looks like "ki" is not the name of a valid parameter on that block mask. To see the list of parameter names, type the following command and look at the names of the fields of the structure returned:

>> get_param('powersystem/svc', 'DialogParameters')

[morteza mohammadi]

Thank you for your answer.I wrote this command.And this information obtained:

ans =

ShowParameters: [1x1 struct]

Seq1_Only: [1x1 struct]

SystemNominal: [1x1 struct]

Pbase: [1x1 struct]

Qnom: [1x1 struct]

Td: [1x1 struct]

mode: [1x1 struct]

ExternalVref: [1x1 struct]

Vref: [1x1 struct]

Xs: [1x1 struct]

Kp_Ki: [1x1 struct]

Bref: [1x1 struct]

Ki available in list. please tell me what is the solution. thanks.

Answer 2

[morteza mohammadi]

Thank you for your answer.I wrote this command.And this information obtained: ans = ShowParameters: [1x1 struct] Seq1_Only: [1x1 struct] SystemNominal: [1x1 struct] Pbase: [1x1 struct] Qnom: [1x1 struct] Td: [1x1 struct] mode: [1x1 struct] ExternalVref: [1x1 struct] Vref: [1x1 struct] Xs: [1x1 struct] Kp_Ki: [1x1 struct] Bref: [1x1 struct]

Ki available in list. please tell me what is the solution. thanks.

[TAB]

It could be

--------------------------------------

set_param('powersystem/svc','Kp_Ki','10');

--------------------------------------

There is no parameter with name "Ki" in the list.

[K E]

Also your original post has 'ki' as lower case, so be sure you use the exact format that TAB provided or that ShowParameters returns.

[morteza mohammadi]

When I write this command (set_param('powersystem/svc','Kp_Ki',10))

This error message appears :

Invalid setting in block (mask) 'svc' for parameter 'Kp_Ki'

What is the problem? please.

[Kaustubha Govind]

It needs to be set_param('powersystem/svc','Kp_Ki','10') - exactly how TAB suggested. set_param takes arguments passed in as string, which are then evaluated as a number.

[morteza mohammadi]

thanks. it works. but when i use genetic algorithm for tuning parameter(kp_ki). in set_aram command, parameter(kp_ki) does not change During the optimization process.

[Kaustubha Govind]

Is there an error?