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Selective Power Control in Grid-Connected AC Microgrids

delete2025-01-01
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OA
AI
J
João Marcus S. Callegari
L
Lucas S. Araújo
D
Danilo I. Brandão
DOI:10.1109/OJIES.2025.3575020delete
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摘要

摘要

En 中文
随着非线性负载(NLLs)和分布式能源(DERs)在低压电网中的渗透率不断提高,对电能质量和电网承载能力(GHC)带来了挑战。本文提出了一种适用于并网交流微电网(MGs)的集中式多模式选择性功率控制策略,该策略无需预先获取MG参数。该策略通过两种非同时模式的协调控制,在多个MG节点上提升GHC和电能质量。在集中模式下,一种通用的基于功率的控制算法实现了选择性谐波/畸变功率的调度。这种方案改善了扰动抑制效果和公共耦合点(PCC)功率跟踪的精度。首次将反馈、前馈和扰动解耦作用应用于MG中的畸变/谐波功率。在分散模式下,通过选择性电压检测方法实现了谐波电流补偿(HCC),无需通信链路,从而减少了数据流量。所提出的策略能够实现:(i)在PCC处合成电阻性负载以抑制上游电网谐振;(ii)通过正弦电流合成(SCS)提升电流质量并满足标准要求;(iii)基于电压测量进行HCC,以改善内部节点的电压质量。全面的仿真评估了参考跟踪、扰动抑制、电网短路水平影响以及模式切换。结果表明,在分散模式下,弱电网条件下PCC电压总谐波畸变率(THD)从10.65%降低至1.09%;在集中模式下,强电网条件下通过SCS补偿至11次谐波,PCC电流THD从61.18%降低至3.42%。实验结果验证了该策略在真实MG中的可行性。
Keyword:
Advanced microgrid (MG)
centralized mode
decentralized mode
distortion power
generalized power-based control (GPBC)
harmonic power
selective power control

期刊

I
IEEE Open Journal of the Industrial Electronics Society
IF:
4.3
论文数:
1.7K
被引数:
991

机构

U
Universidade Federal de Minas Gerais
学者数:
2.5W
论文数: 1.5W
被引数: 1.4W
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