Automated Testing Of Busbar Differential Protection Using A System-Based Approach

February 12, 2020

Due to the high short circuit power apparent in transmission and large distribution substations, dedicated busbar protection is in use. The impact of a busbar outage leads to high requirements regarding the speed and stability of a busbar protection.

To guarantee accurate performance, testing the whole busbar protection during commissioning is indispensable. This paper will share experiences from different utilities around the world using the system-based test approach and the errors that were found.

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