混合动力船舶发电机组与储能逆变器并网控制技术仿真

Simulation on Grid-Connected Control Technology of Hybrid Electric Ship Generator Set and Energy Storage Inverter

以采用低速机混合动力系统的远洋化学品船为研究对象,搭建船舶电网混合动力系统模型。针对多台逆变器并联以及发电机组与逆变器并联存在的功率耦合振荡问题,提出基于虚拟阻抗方法的混合动力电网功率解耦理论,实现多台逆变器与柴发机组之间的功率分配和负载转移。研究结果表明,基于虚拟阻抗的混合动力系统功率控制方法能实现对逆变器和柴发机组的精准有功和无功功率控制,保证电网电压和频率的稳定。

Taking the ocean-going chemical ship with low speed motor hybrid power system as the research object,the hybrid power system model of ship power grid is built.Aiming at the problem of power coupling oscillation existing in the parallel connection of multiple inverters and generator sets and inverters,a power decoupling theory of hybrid power grid based on virtual impedance method is proposed to realize the power distribution and load transfer between multiple inverters and diesel generating units.The research results show that the power control method of hybrid power system based on virtual impedance can achieve accurate active and reactive power control of inverter and diesel generator,and ensure the stability of voltage de-frequency of power grid.