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Distributed Frequency Regulation for Heterogeneous Microgrids via Steady State Optimal Control [article]

Lukas Kölsch, Manuel Dupuis, Kirtan Bhatt, Stefan Krebs, Sören Hohmann
2019 arXiv   pre-print
In this paper, we present a model-based frequency controller for microgrids with nonzero line resistances based on a port-Hamiltonian formulation of the microgrid model and real-time dynamic pricing.  ...  The controller is applicable for conventional generation with synchronous machines as well as for power electronics interfaced sources and it is robust against power fluctuations from uncontrollable loads  ...  For this purpose, we present a model-based, distributed, steady state optimal frequency controller that is applicable for heterogeneous and lossy microgrids with both types of network connectors, i.e.  ... 
arXiv:1910.03115v1 fatcat:7a5ep3q4wfcz3hvtaevo7fclim

Secondary Frequency and Voltage Control of Islanded Microgrids via Distributed Averaging

John W. Simpson-Porco, Qobad Shafiee, Florian Dorfler, Juan C. Vasquez, Josep M. Guerrero, Francesco Bullo
2015 IEEE transactions on industrial electronics (1982. Print)  
In this work we present new distributed controllers for secondary frequency and voltage control in islanded microgrids.  ...  The frequency controller rapidly regulates the microgrid frequency to its nominal value while maintaining active power sharing among the distributed generators.  ...  In steady-state, the derivative on the left of (6b) is zero, and hence ω i = ω * for each DG i. That is, the network frequency has been regulated.  ... 
doi:10.1109/tie.2015.2436879 fatcat:37fstlvfpfh7hi34jxq733tzoa

Strategies for Controlling Microgrid Networks with Energy Storage Systems: A Review

Mudhafar Al-Saadi, Maher Al-Greer, Michael Short
2021 Energies  
The control of distributed energy storage involves the coordinated management of many smaller energy storages, typically embedded within microgrids.  ...  state of charge.  ...  The steady-state frequency was maintained to its nominal value via the compensation of power difference in the microgrid system.  ... 
doi:10.3390/en14217234 fatcat:anflqasqkrfnnivu42vhiodbei

Breaking the Hierarchy: Distributed Control and Economic Optimality in Microgrids

Florian Dorfler, John W. Simpson-Porco, Francesco Bullo
2016 IEEE Transactions on Control of Network Systems  
Building from a first-principle analysis of decentralized primary droop control, we study centralized, decentralized, and distributed architectures for secondary frequency regulation.  ...  Surprisingly, we show that the minimizers of the economic dispatch problem are in one-to-one correspondence with the set of steady-states reachable by droop control.  ...  Droop controllers induce steady-state errors in frequency and voltage magnitudes, which are corrected in a secondary control layer.  ... 
doi:10.1109/tcns.2015.2459391 fatcat:i3lodui4xjdp3iyelonl7cfd3i

Analysis and Control for AC and DC Microgrids [article]

Chendan Li
2016 Ph.d.-serien for Det Teknisk-Naturvidenskabelige Fakultet, Aalborg Universitet  
we present a distributed control method for minimizing the operation cost in DC microgrid based on multiagent system.  ...  Optimal power flow in threephase islanded microgrids with inverter interfaced units, Electric Power Systems Research, Volume 123, June 2015, Pages 48-56, ISSN 0378-7796, http://dx.Abstract-In this paper  ...  ACKNOWLEDGEMENTS XI ACKNOWLEDGEMENTS The Ph.D. study, entitled "Analysis and Control of AC and DC microgrids", is carried out at the Department of Energy Technology, Aalborg University, under the supervision  ... 
doi:10.5278/vbn.phd.engsci.00133 fatcat:tkwobsbxzjapjppz7jp43jy3o4

Hybrid DC- and AC-Linked Microgrids: Towards Integration of Distributed Energy Resources

Zhenhua Jiang, Xunwei Yu
2008 2008 IEEE Energy 2030 Conference  
A decoupled control framework is developed for the hybrid microgrid and the performances are evaluated.  ...  This paper presents a microgrid paradigm with both DC and AC links, which may provide an effective way to integrate a heterogeneous set of small-size distributed energy resources into the existing electric  ...  The basic inputs to this controller are the steady-state setpoints for the output power and local bus voltage.  ... 
doi:10.1109/energy.2008.4781029 fatcat:plrgh6l7jfhdlirdprukkafzby

2020 Index IEEE Transactions on Smart Grid Vol. 11

2020 IEEE Transactions on Smart Grid  
., Small-Signal Stability Analysis and Active Damping Control of DC Microgrids Integrated With Distributed Electric Springs; 3737-3747 Hou, K., see Liu, X., TSG Nov. 2020 5431-5441 Hou, Y., see Liang  ...  Volt-VAR Control in Power Distribution Systems; TSG July 2020 3008-3018 Wang, W., see Gao, Y., TSG Nov. 2020 5357-5369 Wang, X., see Sheng, H., TSG Jan. 2020 95-105 Wang, X., Zhang, H., Shi, F., Wu  ...  ., +, TSG Jan. 2020 577-589 Distributed Predictive Control for Frequency and Voltage Regulation in Microgrids.  ... 
doi:10.1109/tsg.2020.3044227 fatcat:qp5iogfnrnambc3qzuwvj4aega

2020 Index IEEE Transactions on Power Systems Vol. 35

2020 IEEE Transactions on Power Systems  
., TPWRS Sept. 2020 4138 Distributed Control of Battery Energy Storage Systems for Improved Frequency Regulation.  ...  ., TPWRS Sept. 2020 4138 Distributed Control of Battery Energy Storage Systems for Improved Frequency Regulation.  ...  Feasible Path Identification in Optimal Power Flow With Sequential Convex Restriction. Lee, D., +, TPWRS Sept. 2020  ... 
doi:10.1109/tpwrs.2020.3040894 fatcat:jjw2rnzr2re6fejvariekzr5uy

A Distributed Hierarchical Control Framework for Economic Dispatch and Frequency Regulation of Autonomous AC Microgrids

Shafaat Ullah, Laiq Khan, Irfan Sami, Ghulam Hafeez, Fahad R. Albogamy
2021 Energies  
for the optimal power dispatch.  ...  at the secondary layer for active power and, hence, frequency regulation of distributed generating units (DGUs); and the tertiary layer is also based on the distributed leaderless consensus-based control  ...  , hence, frequency control of each DGU in a finite-time, and counteracts steady-state frequency deviations under load perturbations.  ... 
doi:10.3390/en14248408 fatcat:phbxit62jravbo2zpzvg4tl6ny

A Comprehensive Review on Integration Challenges, Optimization Techniques and Control Strategies of Hybrid AC/DC Microgrid

Omar Azeem, Mujtaba Ali, Ghulam Abbas, Muhammad Uzair, Ayman Qahmash, Abdulmohsen Algarni, Mohammad Rashid Hussain
2021 Applied Sciences  
scenarios, the efficient management regarding uncertainty for renewable energy resources, the optimal placement of feeders, and the cost-effective control methodologies for the hybrid microgrid.  ...  Hence, there is an increasing need to explore and reveal the integration, optimization, and control strategies regarding the hybrid microgrid.  ...  The authors are also thankful to the Department of Electrical Engineering, The University of Lahore, Pakistan, for providing facilities to conduct this research.  ... 
doi:10.3390/app11146242 fatcat:274dmqmkzzfo7ojow2s75jr3wi

Table of Contents

2020 2020 IEEE Sustainable Power and Energy Conference (iSPEC)  
with High Renewables Research on AGC Control System Optimization of Ultra Supercritical Unit Study on the safety of primary frequency regulation for thermal power unit State Evaluation of Superconducting  ...  to Medium Voltage Distribution Network under the Condition of Satisfying Voltage Quality Economic Analysis and Optimal Design for a Grid-connected Microgrid System Hybrid compensation topology for constant  ... 
doi:10.1109/ispec50848.2020.9350961 fatcat:km5wdazgsjgm3kuedlnxv752c4

Distributed Control Strategies for Microgrids: An Overview

Enrique Espina, Jacqueline Llanos, Claudio Burgos-Mellado, Roberto Cardenas-Dobson, Manuel Martinez-Gomez, Doris Saez
2020 IEEE Access  
In this work, an overview of the state-of-the-art of distributed cooperative control systems for isolated microgrids is presented.  ...  Espina et al.: Distributed Control Strategies for Microgrids: An Overview FIGURE 8. Droop deviations over AC MG. FIGURE 9.  ...  Frequency deviations are produced during transient operation while average-voltage and reactive power are regulated by PI controllers with zero error in steady-state conditions.  ... 
doi:10.1109/access.2020.3032378 fatcat:u6bbfgnf2vchtbp7a4qsjtsvq4

Pinning Decision in Interconnected Systems with Communication Disruptions under Multi-Agent Distributed Control Topology

Samson S. Yu, Tat Kei Chau
2021 International Journal of Robotics and Control Systems  
In this study, we propose a decision-making strategy for pinning-based distributed multi-agent (PDMA) automatic generation control (AGC) in islanded microgrids against stochastic communication disruptions  ...  The pinning-decisions are made based on complex network theories using the genetic algorithm (GA), for the purpose of synchronizing and regulating the frequencies and voltages of all generator bus-bars  ...  However, when pinning-based secondary frequency and voltage strategies are deployed in an islanded microgrid, its steady-state frequency settles to a preset set-point programmed in the secondary controller  ... 
doi:10.31763/ijrcs.v2i1.514 fatcat:t5wik2jkifbpliqzb2wvk5hoei

Stability and steady state analysis of distributed cooperative droop controlled DC microgrids [article]

Ji Xiang, Yu Wang, Yanjun Li, Wei Wei
2016 arXiv   pre-print
For the DC microgrids with the distributed cooperative droop control, the dynamic stability has not been well investigated although its steady performance has been widely reported.  ...  The steady state is analyzed deeply for some special cases. A DC microgrid of three nodes is simulated on the Matlab/Simulink platform to illustrate the efficacy of analytic results.  ...  A distributed droop controller including two modules, voltage regulator and current regulator for a meshed DC microgrid has been proposed in [14] .  ... 
arXiv:1510.03044v2 fatcat:nysoxty7cvf6hkdwq3emmh7chq

Distributed Finite-Time Consensus Control for Heterogeneous Battery Energy Storage Systems in Droop-Controlled Microgrids

Junyan Hu, Alexander Lanzon
2018 IEEE Transactions on Smart Grid  
This paper presents a novel distributed finite-time control scheme for heterogeneous battery energy storage systems (BESSs) in droop-controlled microgrids.  ...  , where both the heterogeneous nature of batteries and the hierarchical control structure are taken into consideration.  ...  For example, an optimal distributed consensus controller for BESSs is proposed in [13] .  ... 
doi:10.1109/tsg.2018.2868112 fatcat:3xjs4twflvd4fpppvnzx6zv5sq
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