The procedure for diagnosing the status of electromechanical actuators for reactor plant control and protection systems
Abstract
The procedure for diagnosing the status of electromechanical actuators for reactor plant control and protection systems
Incoming article date: 27.11.2017The paper presents the development of a system for detecting the status of control and protection system drives (CPS) of a water-water power reactor by vibration signals using the frequency components method. Results of experimental researches at the "Izhorskiy Plant" PO are given. Spectral analysis is used to isolate the frequency ranges of the CPS diagnostic signal spectra, and to develop diagnostic standards. The work describes formation of reference diagnostic vectors (a set of diagnostic features in the form of a binary code) and their comparison with the current state. The developed standards formed the basis for the system of automatic recognition of the object state. The introduction of such a system will simplify the task of collecting, analyzing, comparing drives data during operation at nuclear power plants, as well as improving methods of testing and diagnosing CPS drives, which should positively affect the reliability and resource of equipment.
Keywords: CPS drive, technical diagnostics, spectral analysis, diagnostic vector, state recognition