An Event-Driven Resilient Control Strategy for DC Microgrids

Sahoo, Subham; Dragičević, Tomislav; Blaabjerg, Frede

doi:10.1109/tpel.2020.2995584

Cited by 58 publications

(39 citation statements)

References 28 publications

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“…Further, its performance aligns perfectly for external disturbances, such as load change at t = 2 sec, thereby obeying (5). For the purpose of brevity of this paper, the convergence analysis between time-triggered and event-driven signal can be referred from authors' previous work in [23]. This technique has been briefly discussed in [24] for cyber attacks on heterogeneous sources in DC microgrids where disproportionate current sharing can be ascribed to many factors such as cost, capacity and reliability.…”

Section: Without Resilient Controller Signal Reconstructionmentioning

confidence: 93%

Multilayer Resilience Paradigm Against Cyber Attacks in DC Microgrids

Sahoo

Dragičević

Blaabjerg

2021

IEEE Trans. Power Electron.

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Section: Without Resilient Controller Signal Reconstructionmentioning

confidence: 93%

Multilayer Resilience Paradigm Against Cyber Attacks in DC Microgrids

Sahoo

Dragičević

Blaabjerg

2021

IEEE Trans. Power Electron.

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“…For example, allowing a large change in the parameters under large-signal disturbances where the state variables deviate sufficiently from their references or when, e.g., a low SCR condition is detected. Such methods will not be further detailed here but may be implemented similarly to proposals utilizing an event-driven controller [37]- [39] or adaptive controller structure [13].…”

Section: Consider An Event-driven Controller Designmentioning

confidence: 99%

Optimal Controller Design for Transient Stability Enhancement of Grid-Following Converters Under Weak-Grid Conditions

Taul

Chou

et al. 2021

IEEE Trans. Power Electron.

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Modeling and design-oriented control of transient stability of grid-following converters have attained an increasing interest in recent years. Despite novel nonlinear models enabling a design-oriented enhanced transient stability controller, the focus has so far been limited to study only the synchronization dynamics of the phase-locked loop. To expand upon the knowledge of large-signal performance and stability, this work proposes a systematic analysis procedure of a grid-following converter under weak-grid conditions and large-signal disturbances including the outer dc-link and ac-side voltage control loops. A reducedorder large-signal model is used to analyze the large-signal nonlinear behavior of the system using the area of the basin of attraction as a measure for large-signal robustness. Here, stabilizing and destabilizing trends for outer loop controller parameters are given. Through a surrogate-model expensive blackbox optimization algorithm, a computational-efficient optimal design of the outer loop controller parameters is proposed to maximize the large-signal robustness. Finally, a recommendation and a design guideline for converter constraints and outer-loop controller parameters are given. This can be used to identify the influencing parameters for grid-following converters under largesignal disturbances, and as a tool for fast controller optimization towards large-signal robustness.

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“…Related with the MG resilience to cyber-attacks, several approaches have been developed by the researchers. Some examples are: in [82], the authors adopt the philosophy of treating cyber-attacks as events and develop an event-driven resilient control scheme to detect two categories of stealth attacks and improve the resilience. A novel Cyber-Physical Resilience Metric (CPRM) which uses vulnerability information available publicly is presented in [83,84] to support the decision making of the operators in MG.…”

Section: Faultmentioning

confidence: 99%

A review on control and fault-tolerant control systems of AC/DC microgrids

Ortiz

González

Gutiérrez

et al. 2020

Heliyon

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Microgrids (MG) treat local energy supply issues effectively and from a point of view of the distribution grid, may be a power supply or virtual load. Despite holding a myriad of benefits, MGs also bear a set of challenges, including a higher fault rate. Currently, many articles focus on control techniques; however, little has been written about the techniques of control, hierarchical control, and fault-tolerant control (FTC) applied to MGs, which is the motive of this bibliographic revision on control systems. A brief comparison of the different approaches in the field of present-day research is carried out primarily addressing hierarchical control and fault tolerance. The objective of this investigation is to attract the interest of researchers to the field of control and fault tolerance applied to MGs, such as: modeling, testbed, benchmark systems, control and hierarchical control strategies, fault diagnosis and FTC.

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An Event-Driven Resilient Control Strategy for DC Microgrids

Cited by 58 publications

References 28 publications

Multilayer Resilience Paradigm Against Cyber Attacks in DC Microgrids

Multilayer Resilience Paradigm Against Cyber Attacks in DC Microgrids

Optimal Controller Design for Transient Stability Enhancement of Grid-Following Converters Under Weak-Grid Conditions

A review on control and fault-tolerant control systems of AC/DC microgrids

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