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Study of Marine Synchronous Generator System Identification and Simulation

Author: LiuZhuangDong
Tutor: LiuSheng
School: Harbin Engineering University
Course: Control Theory and Control Engineering
Keywords: Marine synchronous generator Parameter Identification Least Squares Ant Colony Algorithm Simulation
CLC: U665.11
Type: Master's thesis
Year: 2011
Downloads: 56
Quote: 0
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Abstract


A complete ship power system includes not only the prime mover, synchronous generators, load, etc., but also include other related distribution equipment. Including marine synchronous generator power system as a whole, the core of the ship, it is both the prime mover of the \reliability and stability, as the prime mover control strategies provide an effective basis, doing marine synchronous generator system modeling studies, as well as optimizing the parameters of marine synchronous generator system has important practical engineering significance. Combined with the need for the project, the establishment of marine synchronous generator system mathematical model, the whole set of parameters of a ship synchronous generator model and prove identifiability of model parameters. First of all, the modern system identification theory, using a nonlinear least squares estimation based on synchronous generator parameter identification method is proved that the convergence of the method. Marine synchronous generator system according to the framework, the establishment of the system identification model to simulate three-phase sudden short circuit conditions, the use of simulation data as measured data for marine synchronous generator parameter identification. Identification of system dynamic performance than before has been significantly improved, parameter errors also meet the design requirements, thus proving the effectiveness of the method. Further, when considering saturation effects synchronous generator, the system most of the parameters are subject to saturation factors, and the parameter generating an unsaturated relatively large deviations. To consider the saturation effect of synchronous generator model, based on the use of ant colony algorithm was carried out identification and parameter identification algorithm gives detailed steps. Simulation examples show that the use of synchronous generator considering saturation effects model can effectively improve the recognition accuracy. Finally, the ship synchronous generator system simulation test, trial of marine synchronous generator system operating characteristics under different conditions. The simulation experiment proves marine synchronous generator system model and parameter accuracy is the prime mover system control strategy provides a theoretical basis. This not only established a whole ship synchronous generator system simulation model, but also on marine synchronous generator electrical parameters were identified, and the use of numerical example is the recognition result. Research shows that can accurately identify the electrical parameters of marine synchronous generator, which for marine synchronous generator system modeling and engineering foundation for applications, but also will be able to ship power system analysis and calculations provide more accurate synchronization generator parameters, has some practical value.

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CLC: > Transportation > Waterway transport > Marine Engineering > Electrical installations in ships,observation, communication equipment > Marine power installations > Marine motor
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