摘要
在船舶的运行中,频繁的负载变化会给船舶电力推进系统带来电站和电网的剧烈波动,降低了柴油发电机的燃油利用率,破坏了电网的稳定性。为了保持船舶电力推进系统电站和电网的稳定,采用能量存储技术,将储能单元(锂电池和超级电容器)引入船舶电力推进系统。建立含储能单元的船舶电力推进系统功率传输模型并推导出性能指标函数。利用遗传算法对目标函数进行寻优并在Matlab软件中建立含储能单元的船舶电力推进系统进行实例仿真。仿真结果表明,储能单元的引入可以明显地改善船舶电力推进系统的动态性能,增强电站和电网的稳定性。
In ship electric propulsion system, abrupt load variations may continuously bother the normal operation of the power system and bring low combustion efficiency of diesel engine. To solve this problem, energy storage units, Lithium batteries and supercapaeitors, were considered. Ship＇ s power transmission model and optimize performance indicators which can calculated with genetic algorithms were deduced. The model of ship electric propulsion system with energy storage units was established based on Matlab. The simulation results tell us that energy storage units can effectively surmount load power fluctuations in the propulsion system, which can improve the performance of ship electric propulsion system and enhance the stability of the DC grid and power plants.
出处
《计算机仿真》
CSCD
北大核心
2015年第1期388-391,共4页
Computer Simulation
基金
上海市教委科研创新重点项目(12ZZ158)
上海海事大学研究生学术新人培养计划(GK2013070)
