港口岸电系统及其电力变换研究

Research on Shore Power Supply System and its Power Conversion in Port

根据港口岸电的发展趋势和大量的低压电制船舶供电需求,本文首先设计了一种可供船舶靠港期间正常运作和日常用电的移动式岸基船用变压变频供电系统。然后,在MATLAB/Simulink中建立了此系统的数字仿真模型。最后,采用上海港外高桥二期集装箱码头岸电尝试案例中的数据进行正常工况和单相短路故障仿真,仿真结果表明:正常工况下输出电压、频率稳定可靠,故障情况下,输出线电压波形不变,负载可短时间运行。

According to the development trend of ship-to-shore power supply and a large number of low-voltage ships,a portable land-based marine VVVF power supply system is firstly designed in this paper for ship-to-shore during normal operation and daily use of electricity,and then its digital simulation model is set up by MATLAB/Simulink.Finally,the normal working condition and single-phase short circuit fault simulation are carried out by using the data in the case of the onshore Power Supply in Shanghai Port Waigaoqiao Terminal.The simulation results show that the output voltage and frequency under normal condition is stable and reliable,the output line voltage is waveform unchanged under fault conditions,and the load can run in short time.