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Secondary arc currents occur after a fault is cleared (typically by circuit breakers) due to inductive or capacitive coupling with healthy circuits. Such currents are often experienced in long…
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In general, instantaneous values are calculated in EMT simulations. Such instantaneous values must be processed in order to calculate RMS signals, such as voltages and current. The following are two…
Several EMT studies (transformer energisation, load rejection, ferro-resonance etc.) require a detailed model of the non-linear behaviour of the transformer iron core which is defined by its…
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An AC voltage source (ElmVac) can be controlled in EMT simulations by means of signals gathered from a measurement file (ElmFile) which specifies the time series for the three phase voltages. For that…
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The individual phases of the AC voltage source (ElmVac) can be controlled in RMS/EMT simulations. For that purpose, the voltage source (ElmVac) is linked Fourier Sources (ElmFsrc) by a composite…
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In this example an IEC compliant DLL based dynamic model named "DFT analyser" is provided intended for EMT simulations. It retrieves the magnitude (i.e. peak value of sine wave) coefficient of a…
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There are many possibilities to configure and use the System Parameter Identification for time domain (RSM/EMT) simulations. In the attached example, the saturated reactance of the transformer model…
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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 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…
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Refer to attached project. The model makes use of the AC/DC Connector element in order to link in EMT simulations the AC and DC sides of a network. The detailed model is built using power electronics…
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