Low frequency oscillations research in the National Electric Networks of KazakhstanSaukhimov, A.A.; Tokhtibakiev, K.K.; Šuvalova, JelenaWorld Scientist and Engineers Congress "Energy of the future : innovative scenarios and methods of their implementation" WSEC-2017 : June 19-20, 2017, Astana : proceedings2017 / p. 148-152