基于改进VSG的船舶岸电并网控制策略  

Control strategy of ship shore power grid connection based on improved VSG

作　　者：张磊[1] 杨奕飞[1] 李士刚 赵磊 ZHANG Lei;YANG Yi-fei;LI Shi-gang;ZHAO Lei(Jiangsu University of Science and Technology,Zhenjiang 212003,China;The Nanjing First Military Representative Office of the Naval Equipment Department,Nanjing 210018,China;Zhenjiang Ship Electrical Appliance Co.Ltd.,Zhenjiang 212002,China)

机构地区：[1]江苏科技大学,江苏镇江212003 [2]海军装备部上海局驻南京地区第一军事代表室,江苏南京210018 [3]镇江船舶电器有限责任公司,江苏镇江212002

出　　处：《舰船科学技术》2022年第8期112-117,共6页Ship Science and Technology

基　　金：江苏省研究生科研与实践创新计划项目(KYCX20_3146);江苏省科技成果转化专项资金项目(BA2019085);江苏省产业前瞻与共性关键技术项目资助(BE2018109)。

摘　　要：在船舶岸电系统中,当船岸并网预同步切换或负载功率变化时,电压、电流的突变及频率扰动等因素直接影响并网后的系统稳定性。针对此问题,提出一种基于二次反馈调节虚拟同步发电机(virtual synchronous generator,VSG)的岸电电源逆变器控制策略,在VSG控制算法中的有功频率控制环节增加角速度反馈调节以抑制功率变化,并在转子运动控制器上增加二次的转动惯量反馈调节以稳定频率,从而实现并网过程的平滑切换。对某低压船舶岸电系统的仿真实验分析表明,所提出的改进VSG控制策略能有效抑制并网过程和负载突变时的电压和电流突变,提高了岸电电源频率和功率的稳定性。In the ship shore power system, when the ship shore grid connection is pre synchronous switching or the load power changes, the sudden change of voltage and current and frequency disturbance directly affect the system stability after grid connection. In order to solve this problem, this paper proposes a virtual synchronous generator(VSG) based on secondary feedback In the active frequency control part of VSG control algorithm, angular velocity feedback regulation is added to the active frequency control link of VSG control algorithm to suppress the power change, and the second moment of inertia feedback regulation is added to the rotor motion controller to stabilize the frequency, so as to realize smooth switching in the process of grid connection. The simulation results of a low-voltage ship shore power system show that the proposed improved VSG control strategy can effectively suppress the voltage and current mutation in the process of grid connection and load mutation, and improve the stability of frequency and power of shore power supply.

关 键 词：船舶岸电 并网控制 改进VSG 频率稳定性 

分 类 号：TM464[电气工程—电器]