An offline three-level protection coordination scheme for distribution systems considering transient stability of synchronous distributed generation

Fayazi, Hassan; Fani, Bahador; Moazzami, Majid; Shahgholian, Ghazanfar

doi:10.1016/j.ijepes.2021.107069

Cited by 13 publications

(9 citation statements)

References 38 publications

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“…The increasing penetration of synchronous and asynchronous DGs has highlighted the transient stability concerns in the ADNs, MGs, and SGs [36,83]. The DGs are usually low-inertia electrical generators, and the speed of the protection schemes might affect their stability [42,84]. Hence, besides the selectivity constraints in the proposed study, in future works, other stability-based constraints can be considered in the optimization problem.…”

Section: The Proposed Methodsmentioning

confidence: 99%

Optimal adaptive protection of smart grids using high‐set relays and smart selection of relay tripping characteristics considering different network configurations and operation modes

Ataee-Kachoee

Hashemi‐Dezaki

Ketabi

2022

IET Generation Trans & Dist

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Much attention has been paid to optimizing smart grids (SGs) and microgrids (MGs) protection schemes. The SGs' operation in different operating modes (especially gridconnected and islanded conditions) and various system configurations (such as the outage of each of the distribution generations) adversely influence the protection system. The adaptive protection schemes using different setting groups are suitable and reliable solutions to achieve a fast protective system. However, the literature shows a research gap in developing optimized adaptive protection schemes, focusing on constraint reduction, besides the optimal selection of time-current characteristics for direction overcurrent relays (DOCRs) and high-set relays (HSRs). This research aims to fill such a research gap. The power system analyses, such as power flow and short circuit studies, are done in DIgSI-LENT, and the genetic algorithm (GA) is used to find the optimum solutions. Test results of the IEEE 38-bus distribution system illustrate the advantages of this study compared to existing ones. The comparative test results emphasize that 31.78% and 21.62% decrement in time of the protective scheme in different topologies for the distribution networks of the IEEE 38-bus and IEEE 14-bus test systems could be achievable by simultaneously optimizing relay characteristics and HSRs compared to existing approaches.

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Section: The Proposed Methodsmentioning

confidence: 99%

Optimal adaptive protection of smart grids using high‐set relays and smart selection of relay tripping characteristics considering different network configurations and operation modes

Ataee-Kachoee

Hashemi‐Dezaki

Ketabi

2022

IET Generation Trans & Dist

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“…where , , , and are known matrices with appropriate sizes, ∈ ×1 is the variable state vector, ∈ ×1 is the input vector, ∈ ×1 describes the unknown inputs, and ∈ ×1 represents the measured outputs. Let us define a new virtual dynamical system given in (3) designed to be able for online tracking of the internal dynamic states of the original power system described in (2).…”

Section: A Detection Of Cyberattack and Faulty Devicesmentioning

confidence: 99%

“…modern power systems. Due to global warming and greenhouse gases and their effects on the environment, many countries around the globe have adopted new energy policies that enable the widespread-deployment of green and renewablebased energy sources through their energy systems [1], [2]. Motivated by its importance in reducing climate changes, the US has recently rejoined Paris climate accord which should help with reducing carbon dioxide emissions from the power sector.…”

mentioning

confidence: 99%

A Dynamic-State-Estimator-Based Tolerance Control Method Against Cyberattack and Erroneous Measured Data for Power Systems

Alhelou

Cuffe

2022

IEEE Trans. Ind. Inf.

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Cyberattacks against measured variables and faulty metering devices are among the most important threats to modern systems that should be detected and isolated, and the control actions based on the measured variables should be appropriate in order to keep the power system security. This paper proposes a dynamic state estimation based cyberattack tolerant control method for modern power systems. The proposed method involves two new schemes, one is for dynamically detecting the cyberattack, and the other isolates the location of the attack. These schemes are based on dynamic observers designs that can eliminate the effects of unknown inputs. The paper also proposes a fault tolerant control technique using these observer-based detection and isolation schemes. The proposed method can accurately track dynamic states, detecting both cyberattack against measured variables and faulty measuring devices, and isolating the cyberattack and fault locations. The results verify its superiority in comparison with other techniques.

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“…Otherwise, the received signal might be sent due to any noise or interruption. In ( 9)- (11), the modelling of the proposed communication-aided protection scheme for smart grids is presented. The proposed model would be applicable since the smart grids have been equipped with the required communication infrastructures.…”

Section: Problem Statementmentioning

confidence: 99%

“…The radial architecture of conventional distribution networks is transformed into meshed ones in smart grids, which complicates protection coordination [8,9]. The interconnected structure of these active networks in the presence of DGs complicates the smart grid's protection designs [10,11].…”

Section: Introductionmentioning

confidence: 99%

Optimal communication‐aided protection of meshed smart grids considering stability constraints of distributed generations incorporating optimal selection of relay characteristics

Aghaei

Hashemi‐Dezaki

2022

IET Renewable Power Gen

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The optimized protective systems for smart grids and microgrids have received much attention in recent years. However, besides other selectivity constraints, less attention has been paid to synchronous generators' stability concerns. The stability challenges are intensified in meshed grids compared to radial configurations. The literature review shows that a knowledge gap exists in introducing a communication-aided protective scheme for meshed smart grids, considering the stability constraints. This study tries to fill such a research gap by proposing an optimal protection system using the communication links between directional overcurrent relays on both sides of protection zones/distribution lines. Assigning the optimum standard characteristics to protective relays is another contribution. The introduced study is applied to the distribution portion of the IEEE 30-bus test system. The proposed method is implemented in DIgSILENT and MATLAB to perform the power system simulations and solve the optimization problem. The comparative test results infer that the proposed communication-aided scheme results in a 49.57% improvement in speed of the protection system, while there is no stability constraint violation compared to conventional communication-free schemes. Test results highlight the advantages of this research to meet the stability constraints of distributed generations and selectivity constraints simultaneously.

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An offline three-level protection coordination scheme for distribution systems considering transient stability of synchronous distributed generation

Cited by 13 publications

References 38 publications

Optimal adaptive protection of smart grids using high‐set relays and smart selection of relay tripping characteristics considering different network configurations and operation modes

Optimal adaptive protection of smart grids using high‐set relays and smart selection of relay tripping characteristics considering different network configurations and operation modes

A Dynamic-State-Estimator-Based Tolerance Control Method Against Cyberattack and Erroneous Measured Data for Power Systems

Optimal communication‐aided protection of meshed smart grids considering stability constraints of distributed generations incorporating optimal selection of relay characteristics

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