FESTO LABORATORY EQUIPMENT AS A TOOL FOR EXPERIMENTAL MODELING OF ELECTRICAL SYSTEMS OF NPP POWER UNITS
Abstract
DOI: https://doi.org/10.26565/2079-1747-2026-37-03
The article explores the possibilities of using Festo laboratory equipment for experimental modeling and analysis of electrical systems of nuclear power plants with VVER-1000 reactors. The relevance of the work is due to the need to increase the reliability and stability of the operation of the power units' own needs systems, which ensure the continuous operation of automated electric drive systems of pumping equipment, heat removal systems, core cooling and safety systems. Power supply disruptions or deviations in electrical energy parameters can lead to a decrease in the efficiency of the functioning of technological equipment and create potential threats to the safe operation of the power unit.
The paper proposes an experimental and analytical approach to the study of electromechanical processes in automated electric drive systems, taking into account dynamic characteristics, load nonlinearity and the influence of transient and emergency modes. A mathematical model of an asynchronous automated electric drive of a pumping unit has been developed, which is based on the equations of electromechanical equilibrium, the dependence of power consumption on the speed of rotation, as well as the analysis of active power in alternating current circuits. Particular attention is paid to taking into account the inertial properties of the mechanical system and the influence of changes in the supply voltage on the electromagnetic moment and the stability of the drive.
Experimental studies were conducted on the Festo laboratory stand, which allowed to simulate normal, transient and emergency operating modes, in particular voltage sag, overload and loss of external power supply. During the experiment, the dependences between the supply voltage, the speed of rotation of the electric motor and the consumed power were obtained, which confirm the adequacy of the constructed theoretical models and their suitability for describing real processes in systems of own needs. An assessment of measurement errors was performed, which allowed to establish their permissible level and confirm the reliability of the results obtained.
It is shown that the use of Festo laboratory complexes allows to effectively reproduce critical operating modes of electrical systems typical of VVER-1000 type power units, including power failure scenarios and dynamic transient processes. This is important for increasing the level of safety, reliability and efficiency of operation of nuclear power plants. The results obtained can be used in the educational process of training engineering personnel, in conducting scientific research, as well as for simulation modeling of emergency situations in energy systems.
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References
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