基于S函数的船舶电站并网时变参数在线实时仿真

On-line real-time simulation of time-varying parameters of a ship power station based on S-function

并网是现代舰船电站扩容的重要手段,精准并网对保障舰船安全稳定运行有重要意义,由此并网策略成为船舶电站研究的一项重要内容。根据船舶电站并网策略中并网参数的船级社要求和并网参数的时变特性,针对Simulink并网模拟仿真器采用RMS模块不能满足电压精度要求问题,提出利用S函数改进并网电压时变参数RMS模块的检测精度,建立包括频差、相差、电压差在线实时检测的并网检测与控制器模型,并进行船舶电站的并网检测与控制仿真,仿真结果表明该方法保证了时变参数的仿真精度,提高并网的成功率。

Grid connection is an important means to expand the capacity of modem power plants.It is of great importance that the precise time for grid connection for ensuring the safe and the stable of ship power system.Therefore,the research of grid connection and controlling strategy has become an important part of ship power station research.According to the requirements of grid connection and controlling strategy of ship classification society and the character of the grid timevarying parameters,the RMS module using in Simulink grid simulator can't be able to meet the requirements of precision for voltage detection.A real-time simulation using the S function to improve RMS module detection precise is put forward in grid voltage parameter,and establishes a model of detection and controller model of grid connection including frequency difference,phase difference and voltage difference on-line real-time detection.It is applied in a ship power station simulator. The simulation results show that this method ensures the simulation precision of the time-varying parameters and improves the success rate of the grid.