Consequences of distributed generation on power qualityNiitsoo, Jaan; Kütt, Lauri; Taklaja, Paul14th International Scientific Conference on Electric Power Engineering 2013 : Kouty nad Desnou, Czech Republic, 28 – 30 May 2013 : proceedings2013 / p. 163-167 Volt-time characteristics of medium voltage overhead line porcelain pin insulatorsTaklaja, Paul; Hyvönen, Petri; Niitsoo, Jaan; Palu, Ivo; Klüss, Joni; Kütt, Lauri14th International Scientific Conference on Electric Power Engineering 2013 : Kouty nad Desnou, Czech Republic, 28 – 30 May 2013 : proceedings2013 / p. 423-427