Proceedings ArticleDOI
On stability of islanded low-inertia microgrids
Oben Dag,Behrooz Mirafzal +1 more
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TLDR
In this article, the authors demonstrate the stability and power quality problems that can occur in islanded medium voltage DERs, where the line impedance is dominantly resistive, and demonstrate the importance of the frequency and voltage stability as power utilities adopt more distributed energy sources.Abstract:
As the number of distributed energy sources (DERs) increases in a microgrid (MG), the likelihood of frequency and voltage instabilities increases. In particular, the control of frequency and voltage becomes a challenge in an islanded mode due to the inherent low-inertia feature of DERs compared to a grid-tied mode where there is a grid support. This instability problem becomes worse for low or medium voltage low-inertia MGs, where the line impedance is dominantly resistive. The goal of this paper is to demonstrate the stability and power quality problems that can occur in islanded medium voltage MGs. PSCAD/EMTDC simulation results for an MG with a high share of low-inertia power generation units illustrate the importance of the frequency and voltage stability as power utilities adopting more DERs.read more
Citations
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Grid integrated renewable DG systems: A review of power quality challenges and state-of-the-art mitigation techniques
Mohit Bajaj,Amit Kumar Singh +1 more
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Providing privacy, safety, and security in IoT-based transactive energy systems using distributed ledgers
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Journal ArticleDOI
Introducing the new paradigm of Social Dispersed Computing: Applications, Technologies and Challenges
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Proceedings ArticleDOI
TRANSAX: A Blockchain-Based Decentralized Forward-Trading Energy Exchanged for Transactive Microgrids
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Posted Content
TRANSAX: A Blockchain-based Decentralized Forward-Trading Energy Exchange for Transactive Microgrids.
TL;DR: A rigorous solution for transactive microgrids is developed that addresses all three challenges of privacy, trust, and resilience by providing an innovative combination of MILP solvers, smart contracts, and publish-subscribe middleware within a framework of a novel distributed application platform, called Resilient Information Architecture Platform for Smart Grid.
References
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Journal ArticleDOI
Overview of Control and Grid Synchronization for Distributed Power Generation Systems
TL;DR: An overview of the structures for the DPGS based on fuel cell, photovoltaic, and wind turbines is given and the possibility of compensation for low-order harmonics is discussed.
Journal ArticleDOI
Trends in Microgrid Control
Daniel E. Olivares,Ali Mehrizi-Sani,Amir H. Etemadi,Claudio A. Canizares,Reza Iravani,Mehrdad Kazerani,Amir H. Hajimiragha,Oriol Gomis-Bellmunt,Maryam Saeedifard,Rodrigo Palma-Behnke,Guillermo Jimenez-Estevez,Nikos Hatziargyriou +11 more
TL;DR: The major issues and challenges in microgrid control are discussed, and a review of state-of-the-art control strategies and trends is presented; a general overview of the main control principles (e.g., droop control, model predictive control, multi-agent systems).
Journal ArticleDOI
Advanced Control Architectures for Intelligent Microgrids—Part I: Decentralized and Hierarchical Control
TL;DR: Decentralized, distributed, and hierarchical control of grid-connected and islanded microgrids that mimic the behavior of the mains grid is reviewed.
Journal ArticleDOI
A Voltage and Frequency Droop Control Method for Parallel Inverters
TL;DR: In this paper, a new control method for the parallel operation of inverters operating in an island grid or connected to an infinite bus is described, where each inverter supplies a current that is the result of the voltage difference between a reference ac voltage source and the grid voltage across a virtual complex impedance.
Journal ArticleDOI
An Accurate Power Control Strategy for Power-Electronics-Interfaced Distributed Generation Units Operating in a Low-Voltage Multibus Microgrid
Yun Wei Li,Ching-Nan Kao +1 more
TL;DR: In this article, a power control strategy for a low-voltage microgrid is proposed, where the mainly resistive line impedance, the unequal impedance among distributed generation (DG) units, and the microgrid load locations make the conventional frequency and voltage droop method unpractical.