Subject. This article discusses the problems related to the transition from analog automatic load control systems for hydroelectric power plants to digital control systems. Objectives. The study aims to study the problems of resonant vibrations of hydroelectric power plants, and determine the main stages of controlling the entry of a hydroelectric unit into the resonance zone of vibration frequencies. Methods. For the study, we used an analytical method for solving the boundary value problem. Results. The article obtains the main characteristics of vibrations, and highlights the cases of resonant vibrations. It also proposes the algorithm of the controller's actions is depending on the results of the vibration signal. Conclusions. Digital systems for monitoring and controlling the operation of a hydroelectric power unit can ensure trouble-free entry of a hydroelectric unit into its design capacity.
Keywords: energy safety, hydraulic unit, HPP, frequency resonance, digital control systems, safety, operation, vibration displacement, controller
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