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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…
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…
The modelling of the interlocking scheme can be achieved by using a chain interlocking model. This will make the model more flexible and independent of the number of used relays. Also, this chain…
This example shows a simple under frequency load shedding scheme (UFLS) 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 generator.…
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…
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…
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…