Coordination of directional overcurrent relays using a novel method to select their settings

Ezzeddine, Mazhar; Kaczmarek, Robert; Iftikhar, Muhammad

doi:10.1049/iet-gtd.2010.0603

Cited by 101 publications

(71 citation statements)

References 14 publications

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“…Modified differential evolution (DE) algorithm based techniques are also reported in [53][54][55] for optimal setting of DOCRs. In [56], non-heuristic method, for solving relay coordination problem without formulation of objective function was presented. While in [57], an efficient hybrid algorithm based on Shuffled Frog Leaping (SFL) algorithm and LP was applied for solving relay coordination problems.…”

Section: Artificial Intelligence Based Optimization Techniquesmentioning

confidence: 99%

Protection coordination in distribution systems with and without distributed energy resources- a review

Singh

2017

Prot Control Mod Power Syst

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Emission of greenhouse gases and depletion of fossil fuel reserves are two key drivers, which are forcing the mankind to generate the future energy demand from the renewable energy resources. These resources are generally distributed in nature and are directly integrated at distribution levels. Increasing penetration of the distributed energy resources in distribution power networks creates additional operational and control issues. These are mostly regulatory, economical load dispatching, power quality and protection issues. Generally power distribution systems are protected with the help of dedicated over current based protection schemes. But increasing share of distributed energy resources penetration in electric utilities poses a serious threat to the existing protection coordination schemes of the distribution systems. Distributed energy resources connected distribution networks become interconnected in nature and protection coordination schemes, which are designed for unidirectional flow of fault currents become ineffective/non-functional. Therefore, new protection coordination schemes are required for providing the adequate protection coordination for distributed energy resources connected electric power networks. In the available literature, the protection coordination schemes for radial distribution systems and developments in the area of protection coordination are discussed in detail. A thorough review for all these protection coordination schemes for distribution systems with and without distributed energy resources is done in this review article. It includes the analytical and artificial intelligence based techniques application for coordination of protective relays in the distribution systems. The limitations and research gaps in the area of protection coordination schemes are also presented in this review article. The aim of this research paper is to bring all the available research in the area of relay coordination on one platform, so that it will help the emerging researcher to identify the future scope of relay coordination application for distributed energy resources connected distribution systems.

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Section: Artificial Intelligence Based Optimization Techniquesmentioning

confidence: 99%

Protection coordination in distribution systems with and without distributed energy resources- a review

Singh

2017

Prot Control Mod Power Syst

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“…Different solutions have been studied to address this complex issue such as simplex method [2,3], graphical selection procedure [4], and application of several optimization algorithms which among them, particle swarm optimization (PSO) [5][6][7][8][9], bee colony algorithm (BCA) [10], genetic algorithm (GA) [11,12], differential evolution (DE) method [13], ant colony optimization (ACO) [14] and etc., have been presented. Although these methods have been investigated for relay coordination issue, in a medium and large scale power system the application of such methods are quite time consuming [15] and in some cases completely difficult and due to this reason meta-heuristic algorithms are not able to sufficiently and quickly process the coordination in practice.…”

Section: Introductionmentioning

confidence: 99%

An Innovative Fast Relay Coordination Method to Bypass the Time Consumption of Optimization Algorithms in Relay Protection Coordination

Kheshti¹,

Kang²,

Jiao³

2017

Journal of Electrical Engineering and Technology

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-Relay coordination in power system is a complex problem and so far, meta-heuristic algorithms and other methods as an alternative approach may not properly deal with large scale relay coordination due to their huge time consuming computation. In some cases the relay coordination could be unachievable. As the urgency for a proper approach is essential, in this paper an innovative and simple relay coordination method is introduced that is able to be applied on optimization algorithms for relay protection coordination. The objective function equation of operating time of relays are divided into two separate functions with less constraints. As the analytical results show here, this equivalent method has a remarkable speed with high accuracy to coordinate directional relays. Two distribution systems including directional overcurrent relays are studied in DigSILENT software and the collected data are examined in MATLAB. The relay settings of this method are compared with particle swarm optimization and genetic algorithm. The analytical results show the correctness of this mathematical and practical approach. This fast coordination method has a proper velocity of convergence with low iteration that can be used in large scale systems in practice and also to provide a feasible solution for protection coordination in smart grids as online or offline protection coordination.

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“…DG interface may be either a transformer or a power electronics device, which is another important factor affecting overall short-circuit level [5,6]. Since the coordination time interval (CTI), as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Protection Coordination for a Distribution System Connected to a Microgrid using Unidirectional Fault Current Limiter

Abdelsalam

Abdallah

Kamel

et al. 2017

Ain Shams Engineering Journal

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The presence of distributed generation (DG) units in distribution systems increases the fault current level, which disrupts the existing coordination time interval of the protective overcurrent relays. One of the ways for decreasing DG effects on the coordination of protective devices is re-coordination of the relays by installing unidirectional fault current limiter (UFCL) between the main grid (upstream network) and the microgrid (downstream network). The UFCL does not limit fault current contribution of the upstream network when fault occurs in downstream but limits fault current contribution of the downstream network when fault occurs in the upstream. Moreover, it preserves the coordination between all of the relays. Several case studies are carried out for illustrating the performance of the UFCL in maintaining the relay coordination. Ó 2015 Faculty of Engineering, Ain Shams University. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Coordination of directional overcurrent relays using a novel method to select their settings

Cited by 101 publications

References 14 publications

Protection coordination in distribution systems with and without distributed energy resources- a review

Protection coordination in distribution systems with and without distributed energy resources- a review

An Innovative Fast Relay Coordination Method to Bypass the Time Consumption of Optimization Algorithms in Relay Protection Coordination

Improvement of Protection Coordination for a Distribution System Connected to a Microgrid using Unidirectional Fault Current Limiter

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