摘要
作为模拟电网电压和频率波动的电气设备,电网模拟器的研究至关重要。其中,拓扑结构及其控制策略的研究更是重中之重。本文设计了一种新的拓扑结构并结合相应的控制策略和硬件参数设计方法,能够提高电网模拟器的输出电压性能并保证电网模拟器的电压频率可调等功能。此外,为保证控制精度本文采用一种新的三相独立的主电路拓扑结构单独控制基波和谐波发生模块。本文首先对控制策略进行数学建模,并给出了各传递函数、滤波器参数及变压器的设计方案,使所设计的电网模拟器可灵活地模拟电网跌落故障,也可准确地模拟阻抗特性。
As an electrical device that simulates grid voltage and frequency fluctuations,the study of grid simulators is critical.Among them,the study of topology and its control strategy is the most important.This paper designs a new topology and combines the corresponding control strategy and hardware parameter design method to improve the output voltage performance of the grid simulator and ensure the voltage frequency of the grid simulator is adjustable.In addition,in order to ensure the control accuracy,a new three-phase independent main circuit topology is used to control the fundamental wave and harmonic generation module separately.In this paper,the control strategy is mathematically modeled,and the design schemes of each transfer function,filter parameters and transformer are given.The designed grid simulator can flexibly simulate the grid drop fault and accurately simulate the impedance characteristics.
作者
柯奕辰
陈国初
张鹏翔
赵鑫
KE Yi-chen;CHEN Guo-chu;ZHANG Peng-xiang;ZHAO Xin(Electrical College of Shanghai Dianji University,Shanghai 201306,China)
出处
《新一代信息技术》
2019年第9期1-6,共6页
New Generation of Information Technology
基金
教育部留学回国人员科研启动基金(项目编号:教外司留[2014]1685号)
上海市科学技术委员会科研项目“大功率风电机组实时仿真并网试验平台及认证测试技术研究”(项目编号:17DZ1201200)。
