基于闭环锁频控制的并网逆变器孤岛检测方法

LIU Xintian

您当前的位置：

首页 >

文章列表页 >

基于闭环锁频控制的并网逆变器孤岛检测方法

更新时间：2025-08-13

- 基于闭环锁频控制的并网逆变器孤岛检测方法
- Automation of Electric Power Systems Vol. 41, Issue 22, Pages: 116-123(2017)
- 作者机构：
  
  合肥工业大学智能制造技术研究院,安徽省,合肥市,230009
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2017
- 稿件说明：
移动端阅览
LIU Xintian. [J]. Automation of electric power systems, 2017, 41(22): 116-123.
DOI：

LIU Xintian. [J]. Automation of electric power systems, 2017, 41(22): 116-123. DOI：

摘要

孤岛检测是分布式并网领域中研究的前沿问题之一。针对传统被动式检测方法检测盲区较大以及当前无盲区被动式检测方法控制算法复杂的问题，通过分析闭环锁频控制中实现频率跟踪的原理，研究闭环锁频控制的并网逆变器的高频阻抗特性，讨论各种孤岛情况下的负载阻抗特性，提出了一种新的被动式孤岛检测方法，该方法直接采用闭环锁频控制方法的输出频率，通过加入高频段阻抗检测防止了孤岛的发生。仿真和实验结果表明，所提出的被动式孤岛检测方法能够迅速准确地检测出逆变器断网情况，消除检测盲区，并且避免了控制算法复杂的问题。

Abstract

Island detection is one of the frontier issues in the field of distributed grid. Aiming at the problem of large non-detected zone in traditional passive detection method

the control algorithm of current non-detected zone passive detection method is too complicated

by analyzing the principle of frequency tracking in closed-loop frequency-locked control

the high-frequency impedance characteristics of grid-connected inverter controlled by closed-loop frequency-locked control are studied. By discussing the load impedance characteristics of various islanding conditions

a new passive island detection method is proposed

which uses the output frequency of the closed-loop frequency-locked control method directly

preventing the occurrence of the island by adding high-frequency impedance detection. Simulation and experimental results show that the passive island detection method proposed is able to detect the inverter disconnection situation quickly and accurately

can also eliminate non-detection zone

and avoid the complicated problem of control algorithms.

关键词

Keywords

references

Views

2279

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Harmonic Interaction Analysis Method for AC Distributed Parallel System with Multiple Inverters

Analysis and Enhancement Method for Transient Synchronization Stability of Phase-locked Loop Considering Damping and Angular Velocity

Stability Improvement Method of Grid-connected Inverter Considering Phase-locked Loop Effect in Weak Grid

Related Author

WANG Yingjie

LIU Han

ZHANG Xiao

ZHANG Shunchao

ZHAN Ling

HU Bin

WANG Yaoxin

NIAN Heng

Related Institution

School of Electrical Engineering, China University of Mining and Technology

College of Electrical Engineering, Zhejiang University

Electric Power Research Institude of State Grid Jiangsu Electric Power Co., Ltd.

School of Electric Power Engineering, Nanjing Institute of Technology

Electric Power Research Institute, State Grid Jiangsu Electric Power Co., Ltd.

⁰