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DIgSILENT developed an EMT model of a VCB based on [1] (hereafter referred to as Greenwood’s model). Greenwood’s model simulates the voltage recovering characteristic of a VCB after contact separation…
Refer to attached files. A very simple Matlab script calculates a sine wave using a parameter for amplitude and an input variable (time) from DSL. There are no theoretical restrictions in terms…
In PowerFactory, the digexfun interface allows for continuous-time as well as discrete time models to be linked into RMS or EMT simulations: With this option you can define your own user defined DSL…
Refer to the attached Digexdyn_Description_and_Example.zip. In PowerFactory the digexdyn interface allows for linking discrete-time models in RMS or EMT simulations: This interface can be used for…
Several things are generally worth to keep in mind when executing an EMT simulation with PowerFactory: 1. Necessity of accurate representations of line models. PowerFactory offers lumped as well as…
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The AC voltage source can be controlled in EMT simulations based on a measurement file (ElmFile) of the three phases A, B and C. For that purpose, a voltage source (ElmVac) is linked to the…
In order to create a Bode diagram you will need to use the Model Frequency Response command (ComFreqresp). This command is described within the User manual, section "Frequency Response Analysis",…
In the following example the switching in of a shunt capacitor is demonstrated (via an EMT-Simulation), with focus on the resulting capacitor inrush currents. The network model comprises a 6 kV…
The following models are available in PowerFactory (see attachment): Lumped PI model Distributed Constant Parameter, also known as Bergeron model Distributed Frequency Dependent Parameter Modal Domain…
Attached are two projects, one in English, one in German, with an EMT to RMS current and voltage signal converter implemented as a DSL model, which converts instantaneous currents and voltages…