Modelling of high-speed electrical railway system for transmission network voltage quality analysis : Rail Baltic case studyKilter, Jako; Sarnet, Tanel; Kangro, TriinPQ2014 : the 9th International 2014 Electric Power Quality and Supply Reliability Conference (PQ) : June 11-13, 2014, Rakvere, Estonia : proceedings2014 / p. 323-328 : ill Wide-Area applications for enhancement of Estonian power system securityKilter, Jako; Reinson, AndrusPQ2012 : 8th International Conference : 2012 Electric Power Quality and Supply Reliability : June 11-13, 2012, Tartu, Estonia : conference proceedings2012 / p. 143-148 : ill https://ieeexplore.ieee.org/abstract/document/6256218