An Adaptive Inverse-Time Overcurrent Protection Method for Low Voltage Microgrid

Kumar, Naveen; Jain, Dinesh Kumar

doi:10.1109/piicon49524.2020.9112947

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…Different short circuit levels and bidirectional power flows are produced when multiple DERs are connected to various grid nodes. These variations depend on the DER's type, size, location, and operation mode [8][9][10]. In addition, selectivity losses, false tripping, or blinding protection are caused by coordination problems and compromised protection schemes adjust settings in the distribution grid [11,12].…”

Section: Introductionmentioning

confidence: 99%

New Approach for Validation of a Directional Overcurrent Protection Scheme in a Ring Distribution Network with Integration of Distributed Energy Resources Using Digital Twins

Gómez-Luna,

De La Cruz,

Vasquez

2024

Energies

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This article introduces a new approach for validating directional overcurrent protection schemes in ring-topology electrical distribution systems with distributed energy resources (DERs). The proposed protection scheme incorporates overcurrent and directional functions and addresses DER-induced challenges such as variable short circuit levels. This study employs real-time and offline simulations to evaluate the performance of the protection coordination scheme using a digital twin under DER-supplied loads. The utilization of digital twins offers the possibility to simulate different scenarios, providing real-time responses to dynamic changes and allowing for informed decision-making in response to disturbances or faults. This study aims to present a new approach to validate the performance of the proposed protection scheme when the load is entirely supplied by DERs, highlighting issues such as false trips and protection system blindness resulting from changes in short circuit currents. The results show a breakdown in the coordination of the protection scheme during the fault conditions, demonstrating the effectiveness of digital twins in validating the protection scheme’s performance. Performing an analysis in the electromagnetic transient (EMT) domain improves the validation and refines the results.

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Section: Introductionmentioning

confidence: 99%

New Approach for Validation of a Directional Overcurrent Protection Scheme in a Ring Distribution Network with Integration of Distributed Energy Resources Using Digital Twins

Gómez-Luna,

De La Cruz,

Vasquez

2024

Energies

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“…The logic operation is provided to be of AND gate and thereby it compares the values present to that of the fault current values present in the system. Jain,Rishabh,et al, [19] & Naveen Kumar,et al, [20] provides the overcurrent relay IDMT starts to operate after a certain time delay which might also be termed as operating time becoming definite after a certain time delay which might also be termed as operating time of that particular relay. The reason for the operating time becomes definite after certain high values of current is because electromagnetic relays the flux saturates at higher values of current.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Central Control Scheme and Investigation of Fault Current Contribution for Protection of Microgrid

Balasubramanian

Roselyn

Srividya

2022

J. Phys.: Conf. Ser.

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Microgrids suffer from issues namely protection blinding, sympathetic tripping. Microgrids operate in which differs from the conventional power system. Micro-grids operate in grid-connected mode or islanded mode of operation. In islanded mode microgrids utilize distributed energy resources that are renewable such as solar, wind, along with energy storage systems. In both, the modes of the system undergo various challenges such as protection blinding, sympathetic tripping, or short circuit current in power electronic interfaced generation. This work focuses on the analysis of fault in both modes of operation as well as the issues that are specific to a microgrid. Hence adaptive settings of the relay are required to switch over under the different modes of operation. This work utilizes an adaptive central controller for MG protection. Hence the sensed data from the system is fed to the controller and managing the relay operation which is the IDMT relay. This work focuses on the relay setting and plug set for the relays under modes of operation. The detailed analysis is carried out in IEEE 13 bus system and adaptive relay setting calculation for adaptive centralized MG protection is carried out.

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An Extensive Review On Microgrid Protection Issues, Techniques And Solutions

Gairola

Rawat

2021

2021 9th IEEE International Conference on Power Systems (ICPS)

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An Adaptive Inverse-Time Overcurrent Protection Method for Low Voltage Microgrid

Cited by 3 publications

References 9 publications

New Approach for Validation of a Directional Overcurrent Protection Scheme in a Ring Distribution Network with Integration of Distributed Energy Resources Using Digital Twins

New Approach for Validation of a Directional Overcurrent Protection Scheme in a Ring Distribution Network with Integration of Distributed Energy Resources Using Digital Twins

Adaptive Central Control Scheme and Investigation of Fault Current Contribution for Protection of Microgrid

An Extensive Review On Microgrid Protection Issues, Techniques And Solutions

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