适应实际电网阻抗特性的DFIG不平衡电压解耦补偿技术

NIAN Heng

您当前的位置：

首页 >

文章列表页 >

适应实际电网阻抗特性的DFIG不平衡电压解耦补偿技术

更新时间：2025-08-13

- 适应实际电网阻抗特性的DFIG不平衡电压解耦补偿技术
- Automation of Electric Power Systems Vol. 39, Issue 23, Pages: 49-57(2015)
- 作者机构：
  
  浙江大学电气工程学院,浙江省,杭州市,310027
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2015
- 稿件说明：
移动端阅览
NIAN Heng. [J]. Automation of electric power systems, 2015, 39(23): 49-57.
DOI：

NIAN Heng. [J]. Automation of electric power systems, 2015, 39(23): 49-57. DOI：

摘要

提出了一种利用双馈感应发电机(DFIG)补偿公共连接点(PCC)不平衡电压的方法。在DFIG负序数学模型基础上

使用基于电网阻抗观测的解耦控制器实现DFIG对PCC负序电压交、直轴分量的解耦控制

确保DFIG系统在任意电网阻抗比下具有优良的负序电压补偿性能。详细介绍了该方法的设计思路

推导了使用该方法的DFIG系统的闭环传递函数

通过研究电网阻抗比变化时系统闭环极点的轨迹分析了所提不平衡补偿方法的稳定运行能力

并分析了所提方法对电网阻抗动态变化及阻抗估计误差的适应能力。搭建了Simulink仿真模型

对比分析了所提解耦补偿方法与传统不解耦补偿方法的控制性能。最后

搭建了单机实验平台

实验结果证明了所提补偿方法的有效性和相比不解耦补偿方法的优越性。

Abstract

A compensation strategy using doubly-fed induction generator (DFIG) to rebalance the voltage at point of common coupling (PCC) is proposed. By tuning the decoupling controller based on the estimated network impedance

d-q components of the negative sequence voltage at PCC is decoupling controlled

which gives the DFIG system good stability and fast response under arbitrary network impedance ratio. The design principles of the proposed strategy is introduced in detail

then the closed loop transfer function of a DFIG system utilizing the proposed strategy is derived

and the loci of the closed loop poles with varying network impedance ratio are plotted

with which the impact of the network impedance estimation error on the system performance is analyzed. Simulation model is built to compare the control performance of the traditional non-decoupling strategy and the proposed decoupling strategy. Finally

experiments on a prototype validate the effectiveness and superiority of the proposed strategy. This work is supported by National High Technology Research and Development Program of China (863 Program) (No. 2011AA050204).

关键词

Keywords

references

Views

2460

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Stability Control Strategy for Grid-connected Converter Based on Decoupling of Phase-locked Loop and Current Loop

DC-link Dynamics Analysis and Optimal Control Strategy for Grid-forming DFIG-based Wind Turbines in Weak Grid

Equivalent Method of DFIG-based Wind Farm Considering Low Voltage Ride-through and Dynamics of Entire Fault Process

Refined Fault Calculation Model of Doubly-fed Induction Generator Considering Different Voltage Drops and Grid-side Converter Feed-out Current

Related Author

LIU Xingqi

ZOU Zhixiang

YAO Yiyang

TANG Jian

WANG Zheng

CHEN Wu

LI Mengjie

XIE Zhen

Related Institution

School of Electrical Engineering, Southeast University

School of Electrical Engineering and Automation, Hefei University of Technology

School of Electrical and Power Engineering, Hohai University

NARI Group Corporation(State Grid Electric Power Research Institute)

State Grid Shanghai Municipal Electric Power Company

⁰