Yandulskiy O, Hulyi V, Nesterko A, Kovalenko M, Tymokhin O. Improving the efficiency of secondary load frequency control in a power system considering internal tie-line power exchanges. EEJET [Internet]. 2025Aug.26 [cited 2026Feb.7];4(8 (136):6-15. Available from: https://journals.uran.ua/eejet/article/view/336113