General Discussion

parameter description in MMC

Submitted by ya.ahmadi on Thu, 10/01/2020 - 11:18

Hi EMTP team

first thanks for your great software

I found a mismatching between description of "Esm (kJ/MVA)" in MMC block and what really is in EMTP.

description is: Capacitor energy in each Submodule (SM) per MVA

but when check script file of MMC, you will find that  it is the sum of the all sub-modules capacitor energy of MMC per MVA

maybe it seems less important but it will confuse the user.

problemas con las licencias demo

Submitted by Michel Jesús R… on Fri, 08/28/2020 - 05:35
Hola soy usuario nuevo, ya tengo instalado el programa en su versión demo, pero cuando trato de abrirlo me manda al EMTP Activation Utility, para actualizar la licencia, hago el procedimiento que muestra se muestra en la guia de instalación para la versión demo desde los pasos 1-10, pero al final el programa no me abre. Me sigue dando error con la licencia.

Microgrid

Submitted by alexandra.bursuc on Thu, 06/11/2020 - 12:24
Hi everyone I'm trying to simulate the circuit with the microgrid without SM presented in the youtube video but I don't have the relay library so I can't finish the circuit. Can anyoane tell me if I can put something else instead of those? I'm more intrested in the islanding detection .

Flashover switch flashes over before threshold is met

Submitted by alessab on Mon, 03/16/2020 - 18:54

Hello,

I'm dealing with fast transient from lighning strikes.

One of my Flashover switches flashes over at a voltage which is much lower than its set flashover voltage.

This seems to be related to calculation step, as the smaller the step, the closer the flashover is to Vflash.

Nontheless, the flashover takes place (significantly) before the voltage reaches its Vflash value. Is this because the flashover also depends on voltage derivative?
 

Thank you so much for any help in understanding what's happening in the model.

Best regards

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