摘要
针对低压微电网中传统下垂控制存在的电压与频率偏差问题,建立了三相逆变器的数学模型,采用了改进的下垂控制,即电压恢复控制部分采用主从控制,由主控制单元平衡负载突变所引起的电压功率变化,频率恢复部分三个微源共同参与调节,同时加入惯性环节以使频率稳定在额定值附近。在此基础上进行了MATLAB/Simulink环境下的仿真和实验分析,验证了所采取控制策略的有效性。
In allusion to the voltage and frequency deviation of traditional droop control in low voltage microgrid,the mathematical model of the three-phase inverter is established,and improved droop control which the voltage recovery control part adopts master-slave control,the voltage and power change caused by load mutation is balanced by the master control unit,three micro sources in the frequency recovery part participate in the regulation,and inertial link is added to make the frequency stable near the rating value is adopted.Based on this,the simulationin based on MATLAB/Simulink environment and experimental analysis are carried out to verify the effectiveness of the control strategy.
作者
雷鹏娟
LEI Peng-juan(Department of Electrical and Electronic Engineering,Chengde Petroleum College,Chengde 067000,Hebei,China)
出处
《承德石油高等专科学校学报》
CAS
2020年第2期45-50,共6页
Journal of Chengde Petroleum College
关键词
偏差
三相逆变器
下垂控制
惯性环节
deviation
three-phase inverter
droop control
inertial link
