Adaptive Virtual Impedance Controller for Parallel and Radial Microgrids With Varying X/R Ratios

被引:25
作者
Ahmed, Moudud [1 ]
Meegahapola, Lasantha [1 ]
Vahidnia, Arash [1 ]
Datta, Manoj [1 ]
机构
[1] RMIT Univ, Sch Engn, Melbourne, Vic 3000, Australia
关键词
Microgrids; Impedance; Voltage control; Torque; Damping; Voltage measurement; Inverters; Adaptive virtual impedance; distributed energy resources (DERs); feeder characteristics; microgrid stability; power sharing; INVERTERS; STABILITY; GENERATION; OPERATION; DESIGN;
D O I
10.1109/TSTE.2021.3133413
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In this paper, an adaptive virtual impedance-based universal voltage source converter (VSC) control scheme is proposed to improve the stability, and power-sharing performance of VSC interfaced distributed energy resources in hybrid AC/DC microgrids with different feeder characteristics. The proposed control scheme modulates the VSC output impedance by tracking the active and reactive power transfer difference between the inverter terminal and the point of connection to the microgrid. Firstly, the stability limits of microgrid with resistive and inductive microgrid feeders are investigated by theoretical analysis. Subsequently, influence of the feeder parameters on the stability of microgrid is evaluated. From the theoretical analysis, the proposed control scheme shows resistive inverter output impedance at low frequency, while it shows more inductive behavior at system frequency for both the low and medium voltage microgrid feeders. The effectiveness of the proposed control strategy is demonstrated through a range of scenarios for two different microgrid types. The results show that the proposed controller can autonomously vary the output impedance of the VSC and provides significantly improved damping and power-sharing performance of the microgrid.
引用
收藏
页码:830 / 843
页数:14
相关论文
共 24 条
[1]   Influence of Feeder Characteristics on Hybrid AC/DC Microgrids Stability [J].
Ahmed, Moudud ;
Mcegahapola, Lasantha ;
Vahidnia, Arash ;
Datta, Manoj .
2019 9TH INTERNATIONAL CONFERENCE ON POWER AND ENERGY SYSTEMS (ICPES), 2019,
[2]   Stability and Control Aspects of Microgrid Architectures-A Comprehensive Review [J].
Ahmed, Moudud ;
Meegahapola, Lasantha ;
Vahidnia, Arash ;
Datta, Manoj .
IEEE ACCESS, 2020, 8 :144730-144766
[3]   An Adaptive Power Oscillation Damping Controller for a Hybrid AC/DC Microgrid [J].
Ahmed, Moudud ;
Vahidnia, Arash ;
Datta, Manoj ;
Meegahapola, Lasantha .
IEEE ACCESS, 2020, 8 :69482-69495
[4]   Analysis and mitigation of low-frequency oscillations in hybrid AC/DC microgrids with dynamic loads [J].
Ahmed, Moudud ;
Meegahapola, Lasantha ;
Vahidnia, Arash ;
Dattal, Manoj .
IET GENERATION TRANSMISSION & DISTRIBUTION, 2019, 13 (09) :1477-+
[5]   Nonlinear Load Sharing and Voltage Compensation of Microgrids Based on Harmonic Power-Flow Calculations Using Radial Basis Function Neural Networks [J].
Baghaee, Hamid Reza ;
Mirsalim, Mojtaba ;
Gharehpetan, Gevork B. ;
Talebi, Heidar Ali .
IEEE SYSTEMS JOURNAL, 2018, 12 (03) :2749-2759
[6]   Performance Improvement of Multi-DER Microgrid for Small- and Large-Signal Disturbances and Nonlinear Loads: Novel Complementary Control Loop and Fuzzy Controller in a Hierarchical Droop-Based Control SchemeE [J].
Baghaee, Hamid Reza ;
Mirsalim, Mojtaba ;
Gharehpetian, G. B. .
IEEE SYSTEMS JOURNAL, 2018, 12 (01) :444-451
[7]   Unbalanced harmonic power sharing and voltage compensation of microgrids using radial basis function neural network-based harmonic power-flow calculations for distributed and decentralised control structures [J].
Baghaee, Hamid Reza ;
Mirsalim, Mojtaba ;
Gharehpetian, Gevork B. ;
Talebi, Heidar Ali .
IET GENERATION TRANSMISSION & DISTRIBUTION, 2018, 12 (07) :1518-1530
[8]   A generalized descriptor-system robust H∞ control of autonomous microgrids to improve small and large signal stability considering communication delays and load nonlinearities [J].
Baghaee, Hamid Reza ;
Mirsalim, Mojtaba ;
Gharehpetian, Gevork B. ;
Talebi, Heidar Ali .
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS, 2017, 92 :63-82
[9]   A Control System for Stable Operation of Autonomous Networked Microgrids [J].
Eskandari, Mohsen ;
Li, Li ;
Moradi, Mohammad H. ;
Wang, Fei ;
Blaabjerg, Frede .
IEEE TRANSACTIONS ON POWER DELIVERY, 2020, 35 (04) :1633-1647
[10]   A New Way of Controlling Parallel-Connected Inverters by Using Synchronous-Reference-Frame Virtual Impedance Loop-Part I: Control Principle [J].
Guan, Yajuan ;
Guerrero, Josep M. ;
Zhao, Xin ;
Vasquez, Juan C. ;
Guo, Xiaoqiang .
IEEE TRANSACTIONS ON POWER ELECTRONICS, 2016, 31 (06) :4576-4593