电网技术2016，Vol.40Issue(11)：3524-3531,8.DOI:10.13335/j.1000-3673.pst.2016.11.036
弱电网下多逆变器并网控制通道间的交互影响分析
Analysis on Interactive Influences Among Control Loops of Multi Inverters Connected to Weak-Structured Power System
唐振东 1杨洪耕 1袁林1
作者信息
- 1. 四川大学电气信息学院，四川省成都市 610065
- 折叠
摘要
Abstract
Long-distance power transmission and increasing number of grid-connected inverters make power network equivalent impedance for grid-connected multi inverters not ignorable in weak-structured power systems. Existence of power network equivalent impedance couples multiple inverters in PCC, and then causes complex interactive influences among control loops of multi inverters. Equivalent model of multi inverters connected to weak-structured power system was established. Dynamic relative gain array based on frequency was used to quantitatively analyze interactive influences among control loops of multi inverters and give interactive change characteristics for changing grid-connected inverter units, control parameters and power grid equivalent impedance. Finally, grid-connected multi inverters model was built in Simulink platform to verify correctness of analytical results. General rules of changing interactive influences among control loops with increasing number of grid-connected inverters were accurately described.关键词
弱电网/相对增益矩阵/NI 指数/控制交互/多并网逆变器Key words
weak-structured grid/relative gain array/Nieder-Linski index/interactive control/multi grid-connected inverters分类
信息技术与安全科学引用本文复制引用
唐振东,杨洪耕,袁林..弱电网下多逆变器并网控制通道间的交互影响分析[J].电网技术,2016,40(11):3524-3531,8.
