基于虚拟同步发电机的岸电并网控制策略  

Control Strategy of Shore Power Grid Connection Based on Virtual Synchronous Generator

作　　者：张磊[1] 杨奕飞[1] 李士刚 赵磊 ZHANG Lei;YANG Yifei;LI Shigang;ZHAO Lei(Jiangsu University of Science and Technology,Zhenjiang 212100;The Nanjing First Military Representative Office,Shanghai Bureau of Naval Equipment Department,Nanjing 210018;Zhenjiang Ship Electrical Appliance Co.,Ltd.,Zhenjiang 212002)

机构地区：[1]江苏科技大学,镇江212100 [2]海装上海局驻南京地区第一军事代表室,南京210018 [3]镇江船舶电器有限责任公司,镇江212002

出　　处：《计算机与数字工程》2023年第4期786-790,844,共6页Computer & Digital Engineering

基　　金：江苏省科技成果转化专项资金项目(编号:BA2019085);江苏省研究生科研与实践创新计划项目(编号:KYCX20_3146)资助。

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,冲击电压、冲击电流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,研究一种虚拟同步发电机(Virtual Synchronous Generator,VSG)的岸电电源逆变器控制策略,在传统控制算法中,增加转动惯量控制和阻尼控制以抑制频率变化,用下垂特性模拟同发电机的调速控制和励磁控制,从而实现并网过程的平滑切换。通过对低压船舶岸电并网控制系统的仿真实验分析,结果表明所研究的VSG控制策略能有效抑制并离网过程和负载突变时的电压和电流突变,提高了岸电系统的稳定性。In ship shore power system,when pre synchronous switching or load power changes,impulse voltage,impulse current and frequency disturbance directly affect the system stability after grid connection.In order to solve this problem,a control strategy of shore power inverter for virtual synchronous generator(VSG)is studied.In the traditional control algorithm,the inertia control and damping control are added to suppress the frequency change,and the droop characteristic is used to simulate the speed control and excitation control of the same generator,so as to realize the smooth switching of grid connection process.Through the simulation experiment analysis of the shore power grid connected control system of low-voltage ships,the results show that the VSG control strategy can effectively restrain the voltage and current mutation during the process of off grid and load mutation,and improve the stability of the shore power system.

关 键 词：岸电系统 并网控制 虚拟同步发电机 频率稳定 

分 类 号：TM464[电气工程—电器]