Experimental manners of a interference reduction of chosen measuring signals of a generating set in conditions of a marine power plants

Monieta, J.; Nowicki, Marcin

doi:10.29354/diag/82975

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…Based on preliminary studies [3,9,10,30,31], the following measurement points were selected: engine component locations with the highest unreliability and the area with the highest vibration signal generation level. The vibration signal, recorded anywhere on the engine body, is a weighted sum of the responses to all elementary events.…”

Section: Methodsmentioning

confidence: 99%

Diagnosing Cracks in the Injector Nozzles of Marine Internal Combustion Engines during Operation Using Vibration Symptoms

Monieta

2023

Applied Sciences

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In the operation of internal combustion engines, despite technical state monitoring, some cracks that develop in metal components go undetected, leading to secondary, critical, or degradation damage. The diagnostic systems used in floating objects mainly use quasi-static thermodynamic signals, which alert operators too late about emerging damage. Although various methods have been developed to detect cracks in internal combustion engine components, the effectiveness and implementation of the proposed methods are not satisfactory. Therefore, this article presents the use of selected vibration and in-cylinder pressure signals to diagnose the development of damage in some components of marine diesel engines. The investigations were conducted under the natural conditions of the operation of sea-going vessels during port-handling operations. During these investigations, it was possible to observe clear changes in the values of diagnostic symptoms, which corresponded to the development of damage. The developing damage detected in the study involved cracks in injector nozzles manufactured from alloy steel. Despite advances in design, materials, and manufacturing technology, injector nozzle cracks still occur. The diagnostic symptoms used to detect damage development were the amplitude and spectral and wavelet measurements of vibration acceleration signals. This work aimed to search for crack-oriented methods of signal analysis, for example, computer visualization and the recording of diagnostic parameters in various domains. Decimation, windowed, time, amplitude, and time-frequency domain analyses; wavelet statistics; color analysis; and machine learning were used for classification using artificial neural networks. Experimental investigations showed the possibility of diagnosing the development processes of damage to marine diesel engines. The advanced signal processing methods used made it possible to obtain many signal measurements, from which the most useful diagnostic symptoms were selected. The new symptoms found with decimation, time-domain windowed analysis, and Haar wavelet statistics were more useful than the existing ones.

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Section: Methodsmentioning

confidence: 99%

Diagnosing Cracks in the Injector Nozzles of Marine Internal Combustion Engines during Operation Using Vibration Symptoms

Monieta

2023

Applied Sciences

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“…An electromechanical energy converter in the form of an SG is a crucial component of such a system. The SG performance can influence the reliability and safety of the generation node itself and the reliability and safety of the other power system components (converters and loads) [7,8]. The authors proposed a PHIL approach to investigate the influence of the SG output on the power system components.…”

Section: Introductionmentioning

confidence: 99%

Development of an emulation platform for synchronous machine power generation system using a nonlinear functional level model

Kutt,

Sienkiewicz,

Racewicz

et al. 2024

Archives of Electrical Engineering

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The article presents the Power Hardware in the Loop (PHIL) approach for an autonomous power system analysis based on the synchronous generator model incorporating magnetic saturation effects. The model was prepared in the MATLAB/Simulink environment and then compiled into the C language for the PHIL platform implementation. The 150 kVA bidirectional DC/AC commercial-grade converter was used to emulate the synchronous generator. It was controlled by the real-time simulation control unit with the prepared synchronous generator model incorporating magnetic saturation effects. The proposed approach was validated on the 125 kVA synchronous generator connected to the active and reactive loads of different values for the steady-state and the transient-state performance studies.

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Diagnostic development of damage of ship generator sets by means of electrical signals

Monieta

2023

2023 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA)

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Experimental manners of a interference reduction of chosen measuring signals of a generating set in conditions of a marine power plants

Cited by 3 publications

References 7 publications

Diagnosing Cracks in the Injector Nozzles of Marine Internal Combustion Engines during Operation Using Vibration Symptoms

Diagnosing Cracks in the Injector Nozzles of Marine Internal Combustion Engines during Operation Using Vibration Symptoms

Development of an emulation platform for synchronous machine power generation system using a nonlinear functional level model

Diagnostic development of damage of ship generator sets by means of electrical signals

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