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DOE OSTI · 2370155

Searching for Grid-Forming Technologies That Do Not Impact Protection Systems: A promising technology

Peralta, Christopher L.·Dang, Hoang P.·Villegas Pico, Hugo N.
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Abstract

The design of legacy-line protection elements has been guided by the behavior of synchronous machines during faults. Because of the significant field-winding inductance and rotating mass, the magnitude, angular frequency, and phase angle of the back-electromotive force (EMF) voltage waveforms of synchronous machines remain practically constant for several hundreds of milliseconds after a fault occurs. Furthermore this has facilitated the engineering of the memory-polarization technique in mho distance elements, which has been effective for machine-dominant power grids. However, this assumption is no longer held for inverter-based resources (IBRs) because of the lack of field winding and moment of inertia in power electronics devices. Notably, the negative-sequence directional overcurrent protection and the quadrilateral distance elements have been impacted by early IBRs with grid-following (GFL) controls because they did not inject negative-sequence currents during asymmetrical faults.

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24 POWER TRANSMISSION AND DISTRIBUTIONPSCADcircuit faultsdistance protectionfault ride-throughimpedanceinverter-based resourcespower system stabilityprotectionregulatorstrajectory

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Peralta, Christopher L., Dang, Hoang P., Villegas Pico, Hugo N.. 2024-06-04. Searching for Grid-Forming Technologies That Do Not Impact Protection Systems: A promising technology. https://doi.org/10.1109/mele.2024.3386036

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