Optimized protection coordination of smart grids considering N-1 contingency based on reliability-oriented probability of various topologies

Sadeghi, Shakiba; Hashemi‐Dezaki, Hamed; Entekhabi-Nooshabadi, Amir Mohammad

doi:10.1016/j.epsr.2022.108737

Cited by 15 publications

(4 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The conventional protective schemes, considering only the base network configuration, might not be an appropriate solution for ADNs, MG, and SGs [67,68]. This is mainly because the ADNs, MGs, and SGs, unlike conventional passive distribution networks, are able to work in islanded mode and other network configurations besides the grid-connected operation mode.…”

Section: The Proposed Methodsmentioning

confidence: 99%

“…On the other hand, constraint reduction could be useful to a better search capability in the feasible area of the optimization problem and finding the global optima easier. Optimal results for different configurations (N−1 contingency) based on the proposed method compared to those of [22] and [67] in the distribution network of the IEEE 14-bus test system…”

Section: Figurementioning

confidence: 99%

See 1 more Smart Citation

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

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: The Proposed Methodsmentioning

confidence: 99%

Section: Figurementioning

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

Self Cite

View full text Add to dashboard Cite

show abstract

“…As indicated, the traditional single‐OF is based on only one fault scenario, which is mainly the maximum fault scenario [4–7], as presented in Table 1. In the last few years, heuristic optimization approaches have emerged as viable tool for addressing the complexity of OCR coordination [8–34]. For example, these techniques include the genetic algorithm (GA) [7–9], particle swarm optimization (PSO) [16], sequential quadratic programming (SQP) [6], and hybrid optimization methods [23, 31, 34].…”

Section: Introductionmentioning

confidence: 99%

Highly sensitive multifunction protection coordination scheme for improved reliability of power systems with distributed generation (PVs)

Alasali

El‐Naily

Saidi

et al. 2023

IET Renewable Power Gen

View full text Add to dashboard Cite

The high penetration of distribution generators (DGs), such as photovoltaic (PV), has made optimal overcurrent coordination a major concern for power protection. In the literature, the conventional single or multi‐objective function (OF) for phase overcurrent relays (OCRs) scheme faces challenges in terms of stability, sensitivity, and selectivity to handle the integration of DGs and ground fault scenarios. In this work, a new optimal OCR coordination scheme has been developed as a multifunction scheme for phase and ground events using standard and non‐standard tripping characteristics. This research introduces and validates a coordinated optimum strategy based on two new optimization approaches, the Tug of War Optimization algorithm (TWO) and the Charged System Search algorithm (CSS), to mitigate the effects of DGs on fault currents and locations across the power network. Industrial software is used to create a case study of a CIGRE power network equipped with two 10 MW PV systems, and the results of the proposed new optimum coordination scheme are compared to traditional schemes. The findings show that the proposed multifunction OCR scheme is able to reduce the tripping time of OCRs over different fault and grid operation scenarios and increase the sensitivity of the relays in islanding operation mode.

show abstract

“…This coordination problem has been investigated by developing a conventional step-by-step relay and a new method has been proposed [27]. In the introduced study, the relay current and voltage settings were optimized within a non-linear optimization problem by the genetic algorithm (GA) (one of the well-known optimization algorithms in the field of protection systems of ADNs and MGs [28]) and also time settings were found, using liner programming (LP) [29]. The advantage of this method was reducing the number of variables due to the use of hybrid optimization programs and also improving the convergence of the algorithm.…”

Section: Introductionmentioning

confidence: 99%

Optimal Protection Coordination of Active Distribution Networks Using Smart Selection of Short Circuit Voltage-Based Relay Characteristics

Vafadar,

Hejazi,

Hashemi-Dezaki

et al. 2023

Energies

Self Cite

View full text Add to dashboard Cite

Much attention has been paid to the optimized protection of microgrids (MGs) and active distribution networks (ADNs). However, the literature shows a research gap in proposing a hybrid scheme, utilizing the voltage-based and overcurrent-based relays, while the voltage relay characteristics are smartly selected. This study aims to address such a research gap. This article presents an optimal hybrid protection coordination method for ADNs and MGs. Considering that any system fault is associated with a voltage drop, a new protection method is formulated from voltage analysis under fault conditions. The proposed method is independent of the type, size, and location of distributed generation (DG) units, as well as the operation of the distribution system connected to the grid. This method uses only the local voltage to determine the relay’s tripping time and is a low-cost protection method, in addition to the directional overcurrent relays (DOCRs). Optimizing the voltage-based relay characteristics is one of the most important contributions, which leads to improving the protection system speed and its selectivity concerns. The effectiveness of the proposed method has been verified by several simulation tests performed on the medium voltage (MV) distribution system under different fault conditions and DG size and location. The simulation results show that the protection method has appropriate speed, and the protection settings could be independent of the operation modes/topologies and the locations of faults. The comparative results illustrate the advantages of the proposed hybrid protective scheme.

show abstract

Optimized protection coordination of smart grids considering N-1 contingency based on reliability-oriented probability of various topologies

Cited by 15 publications

References 72 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

Highly sensitive multifunction protection coordination scheme for improved reliability of power systems with distributed generation (PVs)

Optimal Protection Coordination of Active Distribution Networks Using Smart Selection of Short Circuit Voltage-Based Relay Characteristics

Contact Info

Product

Resources

About