Electrical Power - Protective Relays - FSC Diff

This app is suitable for electrical engineers especially protection and control engineers.

It is about the transformer differential protection and transformer short circuit current calculations . 

In this app, first you enter the information of transformer and it calculates phase-to-earth ,phase-to-phase and three-phase short circuit currents of secondary and primary side of the transformer .

Then you enter the information of differential relay , and the app plots the characteristics of the stability of the differential relay .

In the next step you can apply any single-phase and two-phase and three-phase faults in the In Zone and Out Zone areas on the primary and secondary side of the transformer and get the faults currents in each phase on the primary and secondary side of the transformer.

Also, currents passing from primary and secondary side CTs can be calculated. 

Then,it calculates the secondary currents of CTs and matching CTs for calculations of Idiff and Ibias of each phase , and the points are plotted on the characteristics of the stability of differential relay, and you can easily see the performance of the fault phase . 

It calculates the zero sequence compensation in two ways , the tertiary winding and measuring neutral current

Features:

* Plotting the characteristics of the stability of differential relay

* Transformer short circuit current calculations (P-N , P-P , 3Ph)

* calculating Idiff and Ibias

* calculating Zeq of each side of transformer

* Plotting vector of phases of each side of transformer

* calculating the zero sequence compensation

* there are 6 themes for this app

* Saving and loading relay setting

* Examples

* There are no ads

FSC Diff is continuously under development, with more features yet to come. Any feedback and bug-reports are greatly appreciated. Please email the suggestions and bugs of this app. Support FSC Diff by downloading it.

If you liked this app , please rate and comment it on google play .Your feedback is important to me .

Thank you

E-mail : farhad.aghajanian@gmail.com 

Farhad Aghajanian