Performance Analysis of Optimization Technique for Protection Coordination in Single and Multi-Loop Distribution System

Tiwari, Raghvendra; Singh, Ravindra Kumar; Choudhary, Niraj Kumar

doi:10.1109/upcon47278.2019.8980151

Cited by 7 publications

(5 citation statements)

References 17 publications

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“…𝐼 𝑟𝑒𝑙𝑎𝑦 𝑃𝑆 (5) In the form of the previously indicated ( 4), the issue is non-linear. The relay coordination problem can be expressed as a linear programming problem if the plug setting (PS) of the relays is fixed as well as the working time of the relays is regarded to be a linear function of the duration multiplier setting [25], Because PSM is fixed in the linear problem, the operating time is calculated using (6), where α 𝑚 is shown in (7).…”

Section: 𝑃𝑆𝑀 =mentioning

confidence: 99%

“…Analytical optimization approaches such as linear (LP) and non-linear programming (NLP), in contrast to meta heuristics, ensure convergence to a local or global optimum depending on the problem model and the supplied initial point. In the linear programming approach, only TMS is employed as a continuous variable, whilst PS is kept constant based on prior knowledge [5]. Using the linear programming methodology, the Big-M [6], [7], dual simplex [8], [9], modified jaya algorithm [10], and other optimization techniques have been used to discover the optimal TMS values.…”

Section: Introductionmentioning

confidence: 99%

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Optimal coordination of directional over current relays for distribution systems using hybrid GWO-CSA

Bhemasenarao,

Byalihal

2024

IJPEDS

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Coordination of protective relays is a critical aspect of electrical distribution systems, ensuring effective and reliable protection against faults. In modern power systems, the integration of distributed generation (DG) sources adds complexity to the coordination task. The dynamic nature of DG systems requires adaptive relay settings that can swiftly detect and isolate faults while minimizing potential damage and downtime. The purpose of this research is to improve the coordination of directional over current relays in electrical distribution systems, particularly in DG systems. An optimization technique combining the grey wolf optimization (GWO) and cuckoo search algorithm (CSA) is developed to identify the best relay settings that reduce overall operation time while ensuring excellent fault identification and isolation. To address relay faults caused by DG integration, a suitable primary and backup relay design is chosen, and the influence of time multiplier settings (TMS) on system performance and reliability is investigated. The proposed GWO-CSA technique is evaluated and implemented on IEEE 3, 8 and 15-bus systems using MATLAB. Simulation results show that the GWO-CSA strategy outperforms well compared to previous algorithms, enabling optimal coordination and increased protection in DG systems while drastically lowering relay operating time.

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Section: 𝑃𝑆𝑀 =mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimal coordination of directional over current relays for distribution systems using hybrid GWO-CSA

Bhemasenarao,

Byalihal

2024

IJPEDS

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“…In the linear programming method, only TMS is taken as a continuous variable while PS is kept fixed based upon previous experiences [4]. Using the linear programming approach, researchers found the optimal values of TMS by using various optimization algorithms such as the Big-M [5], dual simplex [6], modified JAYA algorithm [7], etc.…”

Section: Introductionmentioning

confidence: 99%

Optimal Relay Coordination for DG-Based Power System Using Standard and User-Defined Relay Characteristics

Tiwari

Singh

Choudhary

2022

Int. j. eng. technol. innov.

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The operating time of directional overcurrent relays (DOCRs) can be reduced with user-defined relay characteristics considering plug setting (PS), time multiplier setting (TMS), and relay characteristic coefficients (λ and γ). This study presents a comparative analysis of relay coordination with standard and user-defined relay characteristics. The proposed relay coordination scheme is formulated as a non-linear constraint optimization problem. The grey wolf optimization (GWO) algorithm is used to determine the optimal relay settings and total operating time of DOCRs. The performance of the proposed scheme is tested on the standard 8-bus, 9-bus, and 15-bus systems. The results show that the total operating time of DOCRs with user-defined relay characteristics is better than that with standard relay characteristics. The results of the GWO algorithm are compared with the performance of optimization techniques used in literature to solve the relay coordination problem.

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“…That method [2,3], proposed as a protection method in open-loop distribution systems, cannot be applied to the closed-loop distribution systems targeted in this study. In other work [4], linear and nonlinear programming techniques were applied to obtain the optimal settings of relay in a single-loop and a multi-loop distribution system. A blocking pilot protection method for a closed-loop distribution network with an underground cable was proposed using remote terminal units in a distribution automation system [5].…”

Section: Introductionmentioning

confidence: 99%

“…Herein, the issue concerning protection in a closed-loop distribution system with DG is addressed. The DG has not been considered in previous works [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. In one study [1], the load after the fault point in the distribution line could experience outage because of the operation of the tie switch, without considering the fault section.…”

Section: Introductionmentioning

confidence: 99%

New Protection Scheme in Loop Distribution System with Distributed Generation

Seo¹

2020

Energies

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Loop distribution systems are increasingly used for reasons such as increased distributed generation (DG) and increased demand for a reliable and high-quality power supply. Because the loop distribution system involves bidirectional power flow, the method for protection of the radial distribution system cannot be applied. Therefore, a protection method is proposed herein for loop distribution systems. In this study, the existence of DG is also considered. According to the proposed method, the fault point is estimated on the basis of the equivalent circuit of the distribution system. Then, the fault section is determined and separated from the distribution system. The separation of DG is determined depending on whether the frequency and voltage are maintained within the steady state ranges. The proposed method is modelled and verified using the Electromagnetic Transients Program. Simulations according to the fault location are performed and analyzed. The results show that the method accurately determines the fault section so that normal power can be supplied to the healthy sections in the distribution system.

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Performance Analysis of Optimization Technique for Protection Coordination in Single and Multi-Loop Distribution System

Cited by 7 publications

References 17 publications

Optimal coordination of directional over current relays for distribution systems using hybrid GWO-CSA

Optimal coordination of directional over current relays for distribution systems using hybrid GWO-CSA

Optimal Relay Coordination for DG-Based Power System Using Standard and User-Defined Relay Characteristics

New Protection Scheme in Loop Distribution System with Distributed Generation

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