摘要
随着全球能源危机和环境污染的不断加剧,绿色环保是船舶未来的发展方向,各国研究者都在积极探索新能源在船舶平台上的应用技术,以实现船舶节能减排的目标。文章针对具有船舶特质的电力系统因新能源融入造成的脆性源增加和系统惯量减少所导致系统容易失稳抗干扰能力差、多种分布式电源之间功率的协调分配等问题进行研究,提出在船舶多模式电站中可采用一种基于虚拟同步发电机原理的并网逆变器控制策略,因其具有类似同步发电机输出阻抗大、转动惯量大和功率按下垂特性分配的特点,适用于船舶电力系统这类自主电力系统;还设计了虚拟惯量和阻尼系数的自适应调节策略,充分利用VSG虚拟惯量和阻尼系数灵活可调的优势,在不同工况下有效解决新能源设备和负荷突变引起的频率和功率的波动;通过仿真验证该控制策略在船舶新能源技术中的可行性。
Along with the global energy crisis and increasing environmental pollution, green/environmental protection has become the future direction of the ship development. The application of the new energy on the ship platform has been investigated by the worldwide researchers to achieve energy saving and emission reduction. Owing to the introduction of the new energy into the marine electric power system, problems caused by the increase of brittle sources and the decrease of system inertia are investigated in this paper, such as more unstable system, poor anti-interference ability and coordination allocation of the power among a variety of distributed generators. A control strategy of the grid-connected inverter based on the principle of the virtual synchronous generator is proposed to the be applied in the multi-mode ship power station. It is similar as the synchronous generator, and can be characterized of large output impedance, great inertia and power distribution according to the droop characteristics, which are suitable for such independent electrical power system as the marine electrical power system, and the adaptive adjustment strategy of virtual inertia and damping coefficient is designed to make full use of the flexible adjustability of the virtual inertia and the damped coefficient of VSG. The fluctuations of frequency and power induced by the new energy generation equipment and the sudden load change can be effectively solved under the different operation conditions, and the simulation results verify the correctness and effectiveness of the proposed control strategy in new marine energy technology.
作者
庞宇
刘宏达
戴成
PANG Yu LIU Hong-da DAI Cheng(School of Automation, Harbin Engineering University, Harbin 150001,China Marine Design ＆ Research Institute of China, Shanghai 200011, China)
出处
《船舶》
2017年第3期61-71,共11页
Ship & Boat
关键词
绿色船舶
船舶新能源
虚拟同步发电机
自适应调节
船舶自主电力系统
green ship
new marine energy
virtual synchronous generator
adaptive adjustment
marine independent electrical power system
