CRITERIA FOR SELECTING THE TYPE OF HIGH-RESPONSE AUTOMATIC EXCITATION REGULATORS (ARV-SD) DURING THE MODERNIZATION AND TECHNICAL RE-EQUIPMENT OF THE EXCITATION SYSTEM OF HYDROGENERATORS IN AN ELECTRIC POWER SYSTEM. ReFocus [Internet]. 2024 Feb. 5 [cited 2026 Sep. 12];3(1):54-8. Available from: https://refocus.uz/index.php/rf/article/view/679