Andreev, M.V., A.A. Suvorov, A.B. Askarov, A.V. Kievets, and V.E. Rudnik. 2019. “RESEARCH INTO THE EFFECTS OF RENEWABLE ENERGY SOURCES ON RELAY PROTECTION OPERATION”. Bulletin of the South Ural State University Series "Power Engineering" 19 (4). Челябинск, Россия:34-40. https://doi.org/10.14529/power190404.