Geomagnetically Induced Current Measurement in the Austrian Transmission Grid

Low frequency currents (LFC) can lead to serious problems in power transmission grids. The major share of these currents are geomagnetically induced currents (GIC), which are caused by geomagnetic disturbances. Measurements of LFC in transformer neutral points started in 2013 at a single transformer and have since then expanded to six measurement units all over the Austrian transmission grid. 

COBS Journal Nr. 6/2020

Transformer neutral point current measurement system