Assessing the Performance of ROCOF Relay for Anti-Islanding Protection of Distributed Generation Under Subcritical Region of Power Imbalance

Alam, M. R.; Begum, Most. Tasneem Ara; Muttaqi, Kashem M.

doi:10.1109/tia.2019.2927667

Cited by 30 publications

(7 citation statements)

References 25 publications

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“…As can be observed in Figure 15, the ER G83 setting failed to detect 32 out of 100 cases in less than 2 s whereas the adjustment calculated using BEM only failed to detect 15 out of 100 cases. These cases correspond to scenarios with ∆𝑃 10%, falling within the well-known NDZ for this type of IDM [15,35,56]. Furthermore, the detection time in all cases was shorter for the adjustment achieved using BEM compared to ER G83.…”

Section: Stability Against Tranmission System Disturbances Analysismentioning

confidence: 62%

“…A notable increase in detection time was observed as the active and rea tive power imbalances in the island approached zero. This is where it is expected to b found for RoCoF and FVT NDZ [15,35]. Furthermore, the stability of the minimal entrop settings, presented in Figure 7, was assessed using the validation distribution faults d taset detailed in Table 2.…”

Section: Entropy Surface Exploration Minimal Entropy Settings and Val...mentioning

confidence: 93%

“…Several of the anti-islanding protections based on threshold definition pose serious difficulties in appropriately defining the correct calibration thresholds to ensure proper operation [14,15]. Improper setting of anti-islanding protection increases the likelihood of false tripping of the DERs.…”

Section: Introduction 1background and Motivationmentioning

confidence: 99%

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Bayesian Entropy Methodology: A Novel Approach to Setting Anti-Islanding Protections with Enhanced Stability and Sensibility

Seguin Batadi,

Martínez,

Molina

2024

Energies

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The risk of unintentional islanding creation in distributed energy systems poses a significant security concern since unintentional islanding formation could lead to a supply of energy outside of the optimal quality limits. This constitutes a risk for users, maintenance personnel, infrastructure, and devices. To mitigate this problem, anti-islanding protections are widely used to prevent the distributed generator from feeding a portion of the radial distribution grid when a protection device trips upstream. However, the effectiveness of these protections heavily relies on properly tuning protection setting thresholds (such as time delay and pickup). This work proposes a novel approach that utilizes entropy as a model and metric of the uncertainty associated with a particular protection setting. By minimizing entropy, the proposed method aims to improve stability and sensitivity, consequently improving the overall performance of anti-islanding protection. Simulation results demonstrate that the Bayesian entropy methodology (BEM) approach achieves enhanced stability in various scenarios, including frequency transients, and demonstrates a notable reduction in the size of the dataset and computational burden, ranging between 91% and 98%, when compared to related works, with an improvement of the uncertainty achieved. The findings of this study contribute to the development of more robust and reliable anti-islanding protections.

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Section: Stability Against Tranmission System Disturbances Analysismentioning

confidence: 62%

Section: Entropy Surface Exploration Minimal Entropy Settings and Val...mentioning

confidence: 93%

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Bayesian Entropy Methodology: A Novel Approach to Setting Anti-Islanding Protections with Enhanced Stability and Sensibility

Seguin Batadi,

Martínez,

Molina

2024

Energies

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“…On the other hand, in 24 the blend of ROCOF and ROCOV relay produced a smaller NDZ than the combination of OUF and OUV. Moreover, a comprehensive computational analysis was carried out in 101 to regulate the upper bound of the ROCOFs NDZ.…”

Section: Islanding Detection Methodsmentioning

confidence: 99%

Enhancing grid resiliency in distributed energy systems through a comprehensive review and comparative analysis of islanding detection methods

Kulkarni,

Mishra,

Sudabattula

et al. 2024

Sci Rep

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Reduction of fossil fuel usage, clean energy supply, and dependability are all major benefits of integrating distributed energy resources (DER) with electrical utility grid (UG). Nevertheless, there are difficulties with this integration, most notably accidental islanding that puts worker and equipment safety at risk. Islanding detection methods (IDMs) play a critical role in resolving this problem. All IDMs are thoroughly evaluated in this work, which divides them into two categories: local approaches that rely on distributed generation (DG) side monitoring and remote approaches that make use of communication infrastructure. The study offers a comparative evaluation to help choose the most efficient and applicable IDM, supporting well-informed decision-making for the safe and dependable operation of distributed energy systems within electrical distribution networks. IDMs are evaluated based on NDZ outcomes, detection duration, power quality impact, multi-DG operation, suitability, X/R ratio reliance, and efficient functioning.

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“…Due to the high probability of misoperations that can occur during events unrelated to islanding, in some countries, the Vector Shift is no longer used in island detection. This criterion has been replaced by other algorithms, usually ROCOF [22] - [27].…”

Section: The Impact Of External Disturbances On Vector Shift Criterio...mentioning

confidence: 99%

A Novel Method of Vector Shift Criterion Utilization in Power System Automation

2023

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The article describes the new application of a well-known protection criterion -Vector Shift (VS). In the paper, technical problems related to the utilization of this criterion have been described. Additionally, the authors conducted laboratory tests of a digital protection relay. The impact of different disturbances occurring in the power systems on the operation of the Vector Shift criterion has been examined. The obtained results have proved the validity of banning the Vector Shift criterion in some countries. Furthermore, a novel application of the Vector Shift criterion has been presented. This criterion could be utilized to determine the degree of balance of a separated island. This information may be helpful in novel power system protection devices used in Smart Grids or microgrids.

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Assessing the Performance of ROCOF Relay for Anti-Islanding Protection of Distributed Generation Under Subcritical Region of Power Imbalance

Cited by 30 publications

References 25 publications

Bayesian Entropy Methodology: A Novel Approach to Setting Anti-Islanding Protections with Enhanced Stability and Sensibility

Bayesian Entropy Methodology: A Novel Approach to Setting Anti-Islanding Protections with Enhanced Stability and Sensibility

Enhancing grid resiliency in distributed energy systems through a comprehensive review and comparative analysis of islanding detection methods

A Novel Method of Vector Shift Criterion Utilization in Power System Automation

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