Accuracy of voltage instrument transformers for harmonic measurements in Elering's 330-kV-transmission networkMeyer, Jan; Stiegler, Robert; Kilter, JakoPQ2016 : the 10th International Conference 2016 Electric Power Quality and Supply Reliability Conference (PQ) : August 29-31, 2016, Tallinn, Estonia : proceedings2016 / p. 85-90 : ill https://doi.org/10.1109/PQ.2016.7724094