MicroGrids Operation and Control under Emergency Conditions

Moreira, Carlos; Lopes, João

doi:10.1007/978-3-642-21578-0_12

Cited by 6 publications

(6 citation statements)

References 35 publications

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“…The stand-alone operating mode can perform uninterrupted power supply (UPS) function to continue to supply electricity even in blackout event. Due to these advantages, the penetration of AC microgrid will be increased [1].…”

Section: Introductionmentioning

confidence: 99%

A Fault Analysis on AC Microgrid with Distributed Generations

Shin¹,

Oh²,

Jang³

et al. 2016

Journal of Electrical Engineering and Technology

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-As the penetration of different types of renewable energy sources (RES) and energy storage systems (ESS) increases, the importance of stability in AC microgrid is being emphasized. Especially, RES and ESS which are operated using power electronics have difference in output characteristics according to control structures. When faults like single-line-to-ground fault or islanding operation occur, this means that a fault should be interpreted in different way. Therefore, it is necessary to analyze fault characteristics in AC microgrid in case of grid-connected mode and standalone mode. In this paper, the fault analysis for AC microgrid is carried out using PSCAD/ EMTDC and an overvoltage problem and the countermeasures were proposed.

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Section: Introductionmentioning

confidence: 99%

A Fault Analysis on AC Microgrid with Distributed Generations

Shin¹,

Oh²,

Jang³

et al. 2016

Journal of Electrical Engineering and Technology

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“…and the connection weight b wv between the agents is chosen to be 1. The parameters of the AGC unit [36], [37] are shown in Table 2. C i represents the cost of microgrid generation, and its formula is C i (P Gi,actual ) = C i (P Gi,plan + P Gi ) = α i P 2 Gi + β i P Gi + γ i , where P Gi,actual is actual active power for the ith unit, P Gi,plan is the planned power generation of the ith unit, P Gi is the AGC regulation power of the ith unit, and positive constants α i , β i , and γ i are dynamic coefficients under load disturbance with α i = a i , β i = 2a i P Gi,plan + b i , and γ i = P 2 Gi,plan + b i P Gi,plan + c i .…”

Section: B Interconnected Microgrids Modelmentioning

confidence: 99%

A Virtual Generation Ecosystem Control Strategy for Automatic Generation Control of Interconnected Microgrids

Jian-chu

et al. 2020

IEEE Access

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The continuous access of new energy and distributed energy, as well as the random disturbance of load power, affect the security and stability of microgrids. A virtual generation ecosystem control (VGEC) strategy is proposed in this paper, which adopts the idea of time tunnel and the principle of a new winloss criterion to achieve a fast automatic generation control power dispatch, optimal coordinated control of microgrids. A two-layer dynamic power dispatch structure is introduced in the proposed strategy, which combines hierarchical Q-learning with consensus theory to improve the adaptability of the consistency algorithm in complex random environments. Both the IEEE standard two-area load frequency control model and the interconnected microgrids model are used in simulation for comparison and verification. The results show that, by using the VGEC strategy, the control performance of microgrids can be improved, while can reduce power generation cost, and obtain faster convergence speed and stronger robustness compared with other algorithms. INDEX TERMS Automatic generation control, virtual generation ecosystem control, time tunnel idea, interconnected microgrids.

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“…Various research papers are discussed under the concept of transient stability subsequent to fault condition [ 5 – 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…The author in [ 11 ] introduced a dynamic model for the general microgrid under different conditions such as island operation, emergency control function, and service restoration in case of block-out. Therefore, the author defined a new control procedure for microgrid operation and management in LV distribution networks.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Autonomous Microgrid Subsequent to Symmetrical and Unsymmetrical Fault Triggered Condition

Natesan

Ajithan²,

Mani

et al. 2014

The Scientific World Journal

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Hi-tech scenario and the ecological compression are the key point to drive the intervention of the renewable in the distribution system. In the perspective of complex power system planners, the transient performance of the microgrid is the main concern. For that purpose, various fault cases are explored in order to examine the microgrid transient performance when subjected to accidental events. In this work, the microgrid is modelled with two distributed generations (DGs) tied with a converter separately. With this intention, droop control strategy is adopted for the microsources to examine the microgrid performance during the symmetrical and unsymmetrical fault events. The ability of the control strategy adopted in this work and its effectiveness are evaluated through Matlab/Simulink platform.

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MicroGrids Operation and Control under Emergency Conditions

Cited by 6 publications

References 35 publications

A Fault Analysis on AC Microgrid with Distributed Generations

A Fault Analysis on AC Microgrid with Distributed Generations

A Virtual Generation Ecosystem Control Strategy for Automatic Generation Control of Interconnected Microgrids

Performance Analysis of Autonomous Microgrid Subsequent to Symmetrical and Unsymmetrical Fault Triggered Condition

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