Minimum break relay dependency set approach for coordination of directional relays in multi‐loop networks

Chen, Ming; Shi, Dongyuan; Duan, Xianzhong

doi:10.1049/iet-gtd.2016.1356

Cited by 8 publications

(3 citation statements)

References 23 publications

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“…In the papers of second category, OCRs that can break all loops of network are selected as MBPS using intelligent 2 optimization algorithms such as GA [18], PSO [19] Biogeography-Based Optimization (BBO) [20], and mathematical optimization algorithm LP [21]. The coefficients of objective function in [18] are obtained based on the expert rules.…”

Section: • the Weakness Of Intelligent Optimization Algorithms Formentioning

confidence: 99%

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Determination of optimal breakpoint set of overcurrent relays using modified depth‐first search and mixed‐integer linear programming

Ghotbi-Maleki

Chabanloo

Ebadi

et al. 2020

IET Generation, Transmission & Distribution

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In the process of determination of breakpoints for overcurrent relays (OCR) in power delivery systems, different sets with equal number of OCRs can be selected as minimum breakpoint set (MBPS). Therefore, determination of the most appropriate MBPS is an issue which must be considered. This paper proposes a prioritization between different MBPSs based on the sum of operating times of OCRs. In this case, a set which results the minimum sum of operating times is selected as the appropriate MBPS. For this purpose, the proposed method combines two problems: determination of MBPS and coordination of OCRs, and is expressed in mixed-integer linear programming (MILP) form. Also, a modified depth-first search (DFS) algorithm is applied to determine the OCRs contained loops of studied networks. It is shown that the proposed method has the capability to be combined with previous defined expert rules in this field in order to consider the network conditions in the process of determination of optimal breakpoint set (OBPS). In order to reduce the number of removed coordination constraints, a novel expert rule is added to the existing ones. The proposed method has been implemented on small (8-bus), medium (14-bus and 30-bus) and large (118-bus and 3120-bus) networks, and the results show the effectiveness of proposed method in determining breakpoint set with the least number in first priority and minimum operating times of relays in second priority.

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Section: • the Weakness Of Intelligent Optimization Algorithms Formentioning

confidence: 99%

“…The coefficients of objective function in [18] are obtained based on the expert rules. Relays dependency relation has been used in [20] for breaking the loops of networks instead of relays themselves. Gajbhiye et al [21] have worked on determination of the MBPS with respect to minimising dependency within BPs.…”

Section: Introductionmentioning

confidence: 99%

Determination of optimal breakpoint set of overcurrent relays using modified depth‐first search and mixed‐integer linear programming

Ghotbi-Maleki

Chabanloo

Ebadi

et al. 2020

IET Generation, Transmission & Distribution

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“…Besides, this protection demands a voltage transformer which results in a high implementation cost [9]. Similar to the distance relays, a directional relay involves a high implementation cost as it utilizes voltage and current transformers to determine the fault direction [10]. In addition, coordination of directional relays is difficult in multi-loop distribution systems.…”

Section: Introductionmentioning

confidence: 99%

Fault location in microgrids: a communication‐based high‐frequency impedance approach

Beheshtaein¹,

Cuzner

Savaghebi³

et al. 2019

IET gener. transm. distrib.

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This paper proposes a novel method to locate faults in an AC meshed microgrid. To this end, a set of features is first extracted and selected from the measured signals and fed to a Support Vector Machine (SVM) to detect the occurrence of fault. Then, the Distributed Generator (DG) with the lowest amount of fundamental voltage, which is the closest one to the fault, injects an appropriate voltage/current harmonic. As the faulted section has the lowest impedance value from the PCC of the DG, the harmonic current of the corresponding line has the highest value. Based on this fact, the first candidate DG sends a notification signal to the second candidate DG, which the fault occurs between them. Finally, the impedances in the injected frequency are measured from these two DGs and fed into a multi-class SVM to locate the faulted line. The proposed method has the ability to locate faults for islanded and grid-connected microgrids with variable configurations. Real-time simulation results are taken by OPAL-RT to show the effectiveness of the proposed method in the meshed microgrid.

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A variable neighborhood search algorithm for optimal protection coordination of power systems

et al. 2021

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Minimum break relay dependency set approach for coordination of directional relays in multi‐loop networks

Cited by 8 publications

References 23 publications

Determination of optimal breakpoint set of overcurrent relays using modified depth‐first search and mixed‐integer linear programming

Determination of optimal breakpoint set of overcurrent relays using modified depth‐first search and mixed‐integer linear programming

Fault location in microgrids: a communication‐based high‐frequency impedance approach

A variable neighborhood search algorithm for optimal protection coordination of power systems

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