Using a Distributed Agent-Based Communication Enabled Special Protection System to Enhance Smart Grid Security

Ross, K. J.; Hopkinson, Kenneth M.; Pachter, Meir

doi:10.1109/tsg.2013.2238261

Cited by 57 publications

(33 citation statements)

References 7 publications

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“…The maximum load and fault currents are given in Table 10. Since OCRs 1, 3,4,6,8,9,11,13, and Fuse 1 are inside the load facilities, they are set based on the internal electrical systems of the consumers. Since OCRs 1, 3,4,6,8,9,11,13, and Fuse 1 are inside the load facilities, they are set based on the internal electrical systems of the consumers.…”

Section: Test Casementioning

confidence: 99%

“…[8][9][10] Communication-assisted protection is more efficient compared to noncommunication-assisted methods, [11][12][13] especially for grids with distributed generations (DGs). [8][9][10] Communication-assisted protection is more efficient compared to noncommunication-assisted methods, [11][12][13] especially for grids with distributed generations (DGs).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optimal time‐current graded coordination of multistage inverse‐time overcurrent relays in distribution networks

Hamidi

Ahmadian

Patil

et al. 2019

Int Trans Electr Energ Syst

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Summary This paper proposes a method for optimal coordination of multistage overcurrent relays (OCRs) in radial distribution networks, including industrial, rural, and urban grids. The proposed method optimally coordinates multistage time‐current curves (TCCs) using the genetic algorithm (GA). The proposed method is able to determine the proper TCC type (eg, moderately inverse, very inverse, and extremely inverse), pickup current, and time‐setting multiplier (TSM) for each stage of TCCs. The proposed method utilizes the dynamic models of OCRs and fuses. This safeguards the relays against the maloperations resulting from the DC decaying part of fault currents and transient overcurrents caused by transformer energization or motor starting. The proposed method is evaluated using DIgSILENT Power Factory for power system analysis and Matlab for implementation of the proposed method. According to the simulation outcomes, the advantages and disadvantages of the proposed method are discussed and compared with the existing methods.

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Section: Test Casementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimal time‐current graded coordination of multistage inverse‐time overcurrent relays in distribution networks

Hamidi

Ahmadian

Patil

et al. 2019

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

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“…A distributed agent-based protection system for smart grids is proposed in [9]. SA was identified as being able to enhance the security and reliability in power transmission systems.…”

Section: Related Workmentioning

confidence: 99%

Threat awareness for critical infrastructures resilience

Gouglidis

Green

Busby

et al. 2016

2016 8th International Workshop on Resilient Networks Design and Modeling (RNDM)

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Abstract-Utility networks are part of every nation's critical infrastructure, and their protection is now seen as a high priority objective. In this paper, we propose a threat awareness architecture for critical infrastructures, which we believe will raise security awareness and increase resilience in utility networks. We first describe an investigation of trends and threats that may impose security risks in utility networks. This was performed on the basis of a viewpoint approach that is capable of identifying technical and non-technical issues (e.g., behaviour of humans). The result of our analysis indicated that utility networks are affected strongly by technological trends, but that humans comprise an important threat to them. This provided evidence and confirmed that the protection of utility networks is a multi-variable problem, and thus, requires the examination of information stemming from various viewpoints of a network. In order to accomplish our objective, we propose a systematic threat awareness architecture in the context of a resilience strategy, which ultimately aims at providing and maintaining an acceptable level of security and safety in critical infrastructures. As a proof of concept, we demonstrate partially via a case study the application of the proposed threat awareness architecture, where we examine the potential impact of attacks in the context of social engineering in a European utility company.

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“…Usage would be reliant on a supervisory control and data acquisition (SCADA) basis, but would also require a human-machine interface, in order to ascertain grid conditions. However, to overcome unpredicted reaction delays and security issues which can be generated within those architectures, self-automation also needs to be integrated, as described in previous studies [14][15][16]. Both telecommunication lines and wireless networks within a power system, particularly for a protection scheme, as in References [17,18], point to online reliabilities.…”

Section: Introductionmentioning

confidence: 99%

“…This has led to the installation of additional support options which secure a stable management process. In this regard, automated logics from the previous protection scheme in the SCADA network have been refined in terms of the conventional grid, as in Reference [14], the inverter prevalence network, as in Reference [15], and power flow optimization using connected sensors, as in Reference [16]. As an increase is expected in micro based networks, this trend will be required for the improvement of self-efficiency.…”

Section: Introductionmentioning

confidence: 99%

A Study of Order Modification for Reactive Power Support by Wind Farm during Communication Failure

et al. 2018

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Abstract:Various control methods and applications have been introduced to power systems in order to alleviate the uncertainties of relying on renewable sources. This paper, focusing on a reactive power allocation process, discusses the development of a self-modification algorithm and its introduction to an online reference management system. The algorithm is designed to predict unexpected situations occurring in real-time operations, when, due to technical issues, the control system becomes unavailable. A test system has been formed to check the feasibility of the composed method. As the main purpose of the feasibility study is checking availability with a complex solution, case studies are designed to adapt a reactive power allocation method based on loss minimization. When unexpected systemic errors were induced, the proposed modification plan changed order automatically with maintaining previous objective function. The improved effects, caused by realistic responses, are classified according to EMTDC (Electro-Magnetic Transient Design and Control) analysis.

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Using a Distributed Agent-Based Communication Enabled Special Protection System to Enhance Smart Grid Security

Cited by 57 publications

References 7 publications

Optimal time‐current graded coordination of multistage inverse‐time overcurrent relays in distribution networks

Optimal time‐current graded coordination of multistage inverse‐time overcurrent relays in distribution networks

Threat awareness for critical infrastructures resilience

A Study of Order Modification for Reactive Power Support by Wind Farm during Communication Failure

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