Review of optimization techniques for relay coordination in consideration with adaptive schemes of Microgrid

Kumar, Prashant; Singh Rana, Ankur

doi:10.1016/j.epsr.2024.110240

Cited by 7 publications

(1 citation statement)

References 42 publications

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“…To mitigate the problem stated above, lots of methods for coordinating overcurrent relays have been illustrated in the literature. Various methods have been employed for coordinating OC relays, including trial and error, optimization, and topological approaches such as linear graph theory [6][7][8]. However, trial and error methods suffer from slow convergence and are inefficient for large networks.…”

Section: Introductionmentioning

confidence: 99%

Adaptive protection coordination in microgrid based on nature inspired meta-heuristic optimization algorithm

Kumari,

Naick

2024

Eng. Res. Express

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Ensuring a robust protection system is crucial for safeguarding the integrity of the overall system against abnormalities. Incorporating distributed generation (DG) into the distribution network can introduce fluctuations in fault current levels and directions, potentially causing mismatches in the response of the existing coordination system. This study proposes an adaptive protection coordination scheme designed to accommodate both grid-connected and standalone modes, addressing various fault scenarios. Utilizing a hybrid WCMFO algorithm, optimal relay settings are determined to facilitate effective coordination within a microgrid setup. The proposed method has been analyzed on 9 bus Canadian benchmark system integrated with four DGs. The performance of the proposed method is compared to other optimization techniques to demonstrate its effectiveness. System modelling is conducted using MATLAB/Simulink, and validation is further carried out using industrial ETAP software on a test microgrid system. The analysis extends to evaluating the enhancement in overall system reliability, quantified in terms of Energy not supplied (ENS).

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Section: Introductionmentioning

confidence: 99%

Adaptive protection coordination in microgrid based on nature inspired meta-heuristic optimization algorithm

Kumari,

Naick

2024

Eng. Res. Express

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A new and effective directional overcurrent relay coordination approach for IIDG-based distribution networks using different setting groups for peak and off-peak demand periods

Ayvaz

2024

Electric Power Systems Research

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Optimal coordination of directional overcurrent relays: A fast and precise quadratically constrained quadratic programming solution methodology

Poursaeed,

Doostizadeh,

Hossein Beigi Fard

et al. 2024

IET Generation Trans & Dist

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Nowadays, power system protection is increasingly important because of the growing number of customers and the pressing need for timely fault resolution and relay operations. This paper addresses the non‐linear nature of the objective function in the optimal coordination of directional overcurrent relays (DOCRs) by employing a quadratic Taylor series expansion around an operating point, converting the problem into a quadratically constrained quadratic programming problem, ensuring a global optimal solution with increased computational efficiency. Additionally, the quadratic constraints are converted into second‐order cone constraints for compatibility with the CPLEX solver. Using the least square method, the operating point values are determined and further fine‐tuned using iterations with the DOCR operation times. The IEEE 3‐bus, IEEE 8‐bus, and IEEE 14‐bus test systems are used to test the method, which shows higher improvement rates in reducing DOCR operation times and enhancing cooperation than conventional and metaheuristic methods. The simulation results verify the numerical superiority of the method in optimizing the protection system's efficiency while obtaining rapid and accurate solutions. The proposed method was tested on IEEE 3‐bus, 8‐bus, and 14‐bus systems, optimizing relay operating times to 0.87, 2.96, and 7.05 s, respectively, demonstrating the method's efficiency over conventional approaches.

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Review of optimization techniques for relay coordination in consideration with adaptive schemes of Microgrid

Cited by 7 publications

References 42 publications

Adaptive protection coordination in microgrid based on nature inspired meta-heuristic optimization algorithm

Adaptive protection coordination in microgrid based on nature inspired meta-heuristic optimization algorithm

A new and effective directional overcurrent relay coordination approach for IIDG-based distribution networks using different setting groups for peak and off-peak demand periods

Optimal coordination of directional overcurrent relays: A fast and precise quadratically constrained quadratic programming solution methodology

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