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The attached example shows a single generator infinite bus bar system that goes through three swings before it gets unstable. Power Swing Blocking: The relay is measuring the time of the impedance…
Our "Diagram Layout Tool" can assist you on this.   How to do it: Open a diagram of interest on your graphics board Select Diagram Layout Tool icon from the local graphic window…
The modelling of LV circuit breaker releases is very similar to the modelling of HV circuit breaker relays. The main difference is that although a CT element is selected (StaCt), this element should…
To define this follow these steps: Navigate to a relay type of interest in PowerFactory DataManager  Select the icon "New Object" from the local graphic icon bar In the new open window…
By using the option “Add Label with definable Format” out of local menu bar, it is possible to insert a user defined text box in the time-overcurrent plot. Normally there is a pre-defined format…
Debugging a relay model can be advantageous when having trouble with the model. There are multiple cases where you have to debug a relay model. For example the relay does not trip and you want to find…
A blocking relay is setup in the example provided. The relay located at the top busbar has its first Ioc element blocked for faults downstream of the middle busbar. The second Ioc element will trip…
If you need to place a current transformer in the neutral of a transformer, you should first distribute the neutral of the transformer. This is achieved by going to the Grounding/Neutral Conductor tab…
This example shows a simple under frequency load shedding scheme (or UFLS for short) in the 39 Bus New England System for the loads at buses 16, 21 and 23 in response to a disconnection of the G 06…