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A synchronous motor is typically started as an induction machine while a field winding resistance is also used. The "asynchronous" motor starting of a synchronous machine implies the use of rotor…
This example evaluates the flicker coefficients for the various operating conditions specified in Table A.1 - Annex A of the IEC/TR 61000-3-7 (Edition 2.0). Although the intention of this example is…
PDF reports can by default use results that are present in the memory of PowerFactory, e.g. after a Load Flow calculation. Therefore, the calculation always has to be executed first before creating a…
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Natural oscillations arise from the inherent dynamic interactions between the power system components, whereas forced oscillations are induced by sustained and periodic external inputs. For instance,…
The attached project is based on the medium voltage distribution network benchmark developed by Cigré (European configuration) [1]. The MV network includes two points of connection to the upstream HV…
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One of the most common reasons for the non-selective tripping of the transformer differential protection are the incorrectly set up adapters. In order to accommodate for different voltage levels,…
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You may find the simple grid model with two terminals and a power transformer, protected by a differential protection in the attachment of this FAQ. Here, an emphasis is on the way the adapters had…
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The attached PowerFactory project contains a transmission system with prepared measurement devices ready to run a State Estimation (ComSe). The special thing in transmission system is that there are…
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The attached project contains a QDSL model which models an automatic tap changer for a transformer with time-delayed tap changes. The permissible voltage band is formed using the input variables…
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This example shows the implementation of a Q(V) curve in DSL and also the possibility to modify DSL parameter based on element parameters by using a DPL script. In the DSL model, the input signals…