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With these parameters you can specify a frequency characteristic for r and l” (subtransient inductance) for considering skin effect and the variation of the internal inductance. Relevant for harmonics…
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This flag indicates if the machine reactance should be calculated using all transient parameters (xdss, xds, xd, Tdss, Tds), or if just the subtransient reactance should be used for harmonics. There…
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The best option is to model the TCR using a SVC model and setting the number of capacitors to zero, as shown in attached example. In order to analyze the harmonic distortion of the current using EMT…
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This can be modelled using an external tap controller or a master-slave mode. First of all, both transformers shall have a type which includes settings for the tap changer. In addition, the load-flow…
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Attached you can find an example which includes four loads with a demand of 1 MW each. The way each load is modelled and connected to a three-phase system differs. Two loads are modelled as a…
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This would be the standard procedure: Open the dialog of the line element by double-clicking on its graphic representation Click on the Sections/Line Loads button. A list with all the sections will…
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In the attached example a test grid is used to shown an example configuration for a FFT (Fast Fourier Transformation) element. The example includes two standalone composite models running in parallel,…
In general two different options exist: 1. An explicit description of the motor driven machine (MDM) is defined. In this case a composite model connects the asynchronous machine with the load…
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- EMT Simulation The model used permits the direct modification of the ignition angle (alpha). - RMS Simulation This model is slightly different, as the application of a soft starter does not allow a…
An external grid can have different phase impedances modelled by using a line element defined by a tower type. The tower type is configured such that the user can enter the 3x3 impedance matrix. The…
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