A fault-clearing algorithm supporting the MAS-based protection schemes

Fani, Bahador; Abbaspour, Ehsan; Karami-Horestani, Alireza

doi:10.1016/j.ijepes.2018.06.001

Cited by 12 publications

(7 citation statements)

References 34 publications

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“…It is noteworthy that an agent is an IED including an independent database having the ability to do its specific functions according to its reasoning, judgment, and decision-making capabilities. Exchanging the data among the agents, the MAS can also develop an effective, reliable, and self-heal protection system in which the neighbouring agents autonomously calculate the fault current and coordinately correct their parameters to obtain an optimal protection scheme [6][7][8][9][10][11][12][13][14].…”

Section: Literature Reviewmentioning

confidence: 99%

A three‐stage multi‐agent‐based peer‐to‐peer method for fault isolation of high distributed generation penetrated distribution networks

Esfahani

Fani

Sepehrzad

et al. 2023

IET Renewable Power Gen

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As a major strategic component of smart protection schemes, quick and accurate fault isolation would significantly enhance the system performance. With the ever-increasing installation of distributed generation (DG) units in the distribution networks, however, the fault isolation has become challengeable. Using the multi-agent-based infrastructure, this paper presents a peer-to-peer decentralized protection coordination scheme having the ability to quickly isolate the fault without dependency to DGs' operating points. To do so, the distribution network is first mapped into a communication network to define the relationship tables among the protection devices as the agents. Using a three-stage algorithm, then, the faulted section is removed from the network. In this way, the agents have the ability to be informed about the operation of other agents and accordingly update their relationship tables, network configuration, short circuit level and direction of current flow. Moreover, the decentralized nature of peer-to-peer communication makes the approach capable of not relying on a central controller. The proposed method utilizes the common protection devices to be used as the agents and does not need additional measurement equipment. Numerical studies show that the proposed protection scheme can accurately and quickly isolate the faulted section of a high DG-penetrated distribution network system.

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Section: Literature Reviewmentioning

confidence: 99%

A three‐stage multi‐agent‐based peer‐to‐peer method for fault isolation of high distributed generation penetrated distribution networks

Esfahani

Fani

Sepehrzad

et al. 2023

IET Renewable Power Gen

Self Cite

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show abstract

“…In [35], by changing the characteristic curves of the relay, a protection scheme is developed to preserve the protection coordination among overcurrent relays when the fault current level changes. In [36], by using the less used capabilities of the relays, a protection system is proposed that can replace the available protection system during emergency conditions and the occurrence of a problem in the updating process of protection settings. In [37], a selective protection scheme is proposed for microgrids.…”

Section: Introductionmentioning

confidence: 99%

Multi-Agent System-Based Hierarchical Protection Scheme for Distribution Networks With High Penetration of Electronically-Coupled DGs

et al. 2021

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With the increasing penetration of distributed generations, preserving the protection system coordination is of great importance for the distribution network operation. This paper presents a supplementary protection strategy for the multi-agent system (MAS)-based hierarchical protection scheme (HPS). The primary level of MAS-based HPS clears the fault and preserves the protection coordination while the higher levels update the relay settings. The key advantage of the proposed supplementary scheme is that the primary level can autonomously and quickly preserve the protection coordination when the main relay is during the time-consuming process of updating settings in the case of network operating condition change. By adopting converter-based DGs as the only MAS agents, the proposed supplementary scheme divides the distribution network into several zones that communicate together using point-to-point communication.Without communicating with higher protection levels, the supplementary protection limits the influence of DGs on the fault current by controlling the produced power of each zone. The effectiveness of the proposed strategy is validated through several simulation case studies on the Isfahan distribution network.

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“…Accordingly, multi‐agent system (MAS) properties can help near‐real‐time adaptive approaches find a solution for the problem. Coordinating intelligent behaviours of agents, the MAS makes it possible to combine agents’ abilities under a distributed communication structure in which centralized methods are not suggested because of the following drawbacks Requiring a high communication capability with a powerful central controller, and Relatively high system vulnerability because of dependency on single point failures [21]. …”

Section: Introductionmentioning

confidence: 99%

Adaptive scheme protecting renewable‐dominated micro‐grids against usual topology‐change events

Abbaspour

Fani

Karami-Horestani

2021

IET Renewable Power Gen

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Miscoordination and faulty operation are the two main protection challenges of renewable Distributed Generations (DGs) in Distribution Networks (DNs) and Micro-Grids (MGs). Although various approaches have already been presented in the literature, none of them has proposed a solution for simultaneous impact of DN/MG reconfigurations and DGs' protection challenges. Topology-change being a usual method in decreasing power loss or voltage deviations, it would be preferable to have an online adaptive scheme considering all protection challenges together. Hence, the ordinary overcurrent relays using the IEC 61850 protocol capabilities are utilized in an algorithm capable of definitely assigning which relays are responsible for the on-going fault and which ones are not. That is, the algorithm is applied on a peer-mode multi-agent system (MAS) structure. First, the relay agents are classified into radial and loop Virtual Local Area Networks (VLANs). When a relay detects the fault, the MAS will find the responsible VLAN and instantly isolate other VLANs, including their agents. Next, the main and backup relays using the proposed communication map are assigned within the responsible VLAN. Last, a suitable protection algorithm is applied on the selected relays, according to direction of fault current. INTRODUCTIONNumerous advantages of renewable Distributed Generations (DGs) have always been making scientists find better optimal ways to solve problems encountered in penetrating resources into an existing Distribution Network (DN) or Micro-Grid (MG) [1,2], among which the protection operation validity is the most vital issue that must be guaranteed for the grid [3][4][5].Various techniques have already been proposed to save conventional protection schemes from DG units, which can mainly be classified into four categories shown in Table 1.Based on numerous states (for the small networks of MGs and the corresponding DNs during grid-connected mode) which are derived from different locations, types, or generations of DG units as well as various fault locations and selectable topologies of DNs/MGs, researchers have gradually been led to near-real-time adaptive methods, in which in case of some DN or DG status changes, violations in fault current level or directions may lead protection systems towards dangerous conditions like protection blinding, symptomatic tripping, or unwanted DG islanding [19].This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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A fault-clearing algorithm supporting the MAS-based protection schemes

Cited by 12 publications

References 34 publications

A three‐stage multi‐agent‐based peer‐to‐peer method for fault isolation of high distributed generation penetrated distribution networks

A three‐stage multi‐agent‐based peer‐to‐peer method for fault isolation of high distributed generation penetrated distribution networks

Multi-Agent System-Based Hierarchical Protection Scheme for Distribution Networks With High Penetration of Electronically-Coupled DGs

Adaptive scheme protecting renewable‐dominated micro‐grids against usual topology‐change events

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