Distributed Fast Fault Detection in DC Microgrids

Mola, Mina; Afshar, Ahmad; Meskin, Nader; Karrari, M.

doi:10.1109/jsyst.2020.3035323

Cited by 19 publications

(12 citation statements)

References 38 publications

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“…Remark 3. It should be mentioned that in many cases the multiplicative type of the fault can be transformed into an additive one (Mola et al, 2022;Gao et al, 2018). As an example, the LOE fault can be modeled as…”

Section: Problem Formulationmentioning

confidence: 99%

“…Conventionally, it is assumed that the microgrid system always operates in an ideal environment. However, faults occurring on the physical system layer or the communication network layer in the microgrid system can have serious consequences, disrupting the reliable and efficient operation of the system and compromising the stability of the overall grid (Mola et al, 2022; Morato et al, 2019). According to the occurrence location, the faults in microgrid systems can be categorized into actuator faults, sensor faults, component faults, and communication faults (Afshari et al, 2020; Dehkordi and Moussavi, 2020; Shahab et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Cairoli and Dougal (2018) proposed a fast and effective method for detecting and isolating faults in medium-voltage DC microgrids, where rapid coordination between power supply converters and bus segmentizing contactors was used to limit currents and isolate faults. In Mola et al (2022), a distributed fast FD technique for DC microgrid was presented. The proposed architecture relied on a FD network that was composed of a local detector designed for each DG unit.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Distributed observer-based resilient control of islanded DC microgrids under actuator faults

Jiao

Ding

Kong

et al. 2023

Transactions of the Institute of Measurement and Control

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In this paper, a distributed observer-based resilient control scheme is proposed to solve the voltage regulation and current sharing problems of islanded direct current (DC) microgrids under actuator faults. First, an observer-based distributed fault estimation design is presented to estimate fault signals with high accuracy. Then, based on the estimated information, a primary decentralized fault-tolerant control layer is designed to ensure accurate voltage reference tracking. A secondary cooperative control layer is employed to achieve the goal of current sharing. Besides, both the fault estimation observers and the fault-tolerant controllers are designed in a plug-and-play fashion, which guarantees the scalability of the DC microgrid. The simulation and experimental results show that the proposed control strategy can efficiently improve the reliability and resilience of the DC microgrid.

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Section: Problem Formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Distributed observer-based resilient control of islanded DC microgrids under actuator faults

Jiao

Ding

Kong

et al. 2023

Transactions of the Institute of Measurement and Control

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“…Each physical load or generator has a corresponding cyber node. These nodes can communicate with each other or with a control centre to implement different algorithms for distributed control [102], optimisation [101], fault/attack detection [103], and attack tolerance [99]. Cyber-physical interactions result in complicated scenarios in the reliability analysis of power grids.…”

Section: Power Grids As Cyber-physical Systemsmentioning

confidence: 99%

Power Grids as Complex Networks: Resilience and Reliability Analysis

Amani

Jalili

2021

IEEE Access

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Power grids are cyber-physical systems and can be modelled as network systems where individual units (generators, busbars and loads) are interconnected through physical and cyber links. Network components (nodes/edges) may undergo intentional and/or random failures. In catastrophic cases, a failure initiating from a small set of these components can quickly propagate through the whole network, leading to a cascade of failures that might force a deep whole-grid blackout. Often network components have different vitality and protecting some is more critical than others. This manuscript aims to provide a focused overview of modelling power grids as complex networks and their resilience and reliability analysis. We also perform a critical review of vitality metrics and their precision in power grid resilience analysis. The review is accompanied by some simulations on benchmark and real power grids to show the applicability of these concepts in studying resilience.

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“…topic [4]- [6]. Having the opportunity to utilize renewable energy sources by DC microgrid and the widespread usage in modern-designed vehicles such as train, aircraft, watercraft are representative examples of DC microgrid application and usage.…”

Section: Introductionmentioning

confidence: 99%

Distributed Event-Triggered Consensus-Based Control of DC Microgrids in Presence of DoS Cyber Attacks

et al. 2021

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In this paper, the problem of distributed event-based control of large scale power systems in presence of denial-of-service (DoS) cyber attacks is addressed. Towards this end, a direct current (DC) microgrid composed of multiple interconnected distributed generation units (DGUs) is considered. Voltage stability is guaranteed by utilizing decentralized local controllers for each DGU. A distributed discrete-time event-triggered (ET) consensus-based control strategy is then designed for current sharing in the DGUs. Through this mechanism, transmissions occur while a specified event is triggered to prevent unessential utilization of communication resources. The asymptotic stability of the ET-based controller is shown formally by using Lyapunov stability via linear matrix inequality (LMI) conditions. The behavior of the DGUs subject to DoS cyber attacks are also investigated and sufficient conditions for secure current sharing are obtained. Towards this end, a switching framework is considered between the communication and attack intervals in order to derive sufficient conditions on frequency and duration of DoS cyber attacks to reach the secure current sharing. The validity and capabilities of the presented approach is confirmed through a simulation case study.INDEX TERMS Distributed event-based control, denial-of-service (DoS) cyber attack, DC microgrid, current sharing, asymptotic stability, consensus-based control, linear matrix inequality (LMI).

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Distributed Fast Fault Detection in DC Microgrids

Cited by 19 publications

References 38 publications

Distributed observer-based resilient control of islanded DC microgrids under actuator faults

Distributed observer-based resilient control of islanded DC microgrids under actuator faults

Power Grids as Complex Networks: Resilience and Reliability Analysis

Distributed Event-Triggered Consensus-Based Control of DC Microgrids in Presence of DoS Cyber Attacks

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