| A complete set of marine synchronous generator system includes not only prime mover, synchronous generator and load, but also other related electric distribution equipment. As the core of whole electric power system, marine synchronous is not only the "load" of prime mover, but also supplies electric power for the entire marine electric power system. So it's a connecting link between the preceding and the following, and has an important impact on the whole generator system. In order to ensure the reliability and stability of the whole marine generator system and to provide availability ground for control strategy of the prime mover, to make research of simulation of marine synchronous generator system, and to optimize related parameters of marine synchronous generator systems have important practical significance.According to the needs of project, the paper establishes a mathematical model of marine synchronous generator systems, gets a whole set of marine synchronous generator model parameters, and proves identifiability of the model parameters.Firstly, a method for estimating synchronous generator parameters of nonlinear recursive least squares parameter is introduced based on the modern identification theory. Thus the convergence is proved theoretically. According to the framework of the marine synchronous generator system, the simulation model is established. The model simulates the working situation of three-phase sudden short, uses simulated data as measured data, and finishes marine synchronous generator's parameter identification. Finally, the system dynamic performance is showed better than the previous, the difference of the parameters meet the requirements. The correctness of the method is proved.Secondly, when the saturation effect of the synchronous generator is considered, the parameters are changed. Based on the saturation effect of synchronous generator, the ant colony algorithm has been used for the identification, with the detailed steps. The recognition accuracy has been effectively improved by using the model of synchronous generator considering the saturation effect.Lastly, the paper carries on the simulation authentication of the marine synchronous generator system, and has verified the operating characteristic of marine synchronous generator systems in different conditions. Simulation test has proved the accuracy of the marine synchronous generator system model and the parameters. It can provide an academic control strategy of the prime mover.The paper has established marine synchronous generator system simulation model. By the model, marine synchronous generator electrical parameters are identified, and the results of identification are verified. The electrical parameters of marine synchronous generator are accurately identified, a foundation is laid, the more accurate synchronous generator parameters of power system will be provided, and the important practical value is showed. |
