An application of a tent map initiated Chaotic Firefly algorithm for optimal overcurrent relay coordination

Gokhale, S. S.; Kale, Vijay

doi:10.1016/j.ijepes.2015.11.087

Cited by 109 publications

(69 citation statements)

References 25 publications

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“…To avoid mal-operation of a relay with normal load or slight overload current, the minimum pickup current setting is selected bigger than the maximum load current. The maximum plug setting is chosen not greater than the minimum fault current [17,18].…”

Section: Relay Protection Coordination Problemmentioning

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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Section: Relay Protection Coordination Problemmentioning

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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“…In the calculation process, FA initially produces a group of fireflies located randomly in the search space and their positions are updated after every iteration. After sufficient iterations, all fireflies will converge to the best possible position in the search space (Gokhale & Kale, 2016).…”

Section: The Traditional Firefly Algorithm In In Two-dimensional Spacementioning

confidence: 99%

Research on Water Quality Assessment Model Based on Improved Three-Dimensional Nemerow Index Method and Firefly Algorithm

Cao¹,

Zheng-long²,

Zhang³

2017

ENRR

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Monitoring water quality is a subject of ongoing concern and study since water quality is closely related to human life. Although Nemerow index method is widely used in water quality assessment, the artificial threshold setting may lead to some errors. In this study, we improved the traditional Nemerow index method and built a three-dimensional water quality assessment model combined with the modified firefly algorithm (FA). Then, we applied the improved three-dimensional Nemerow index method to evaluate 100 random water samples. Compared with the traditional method, the improved one proved to be more objective, scientific and practical.

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“…The selected DGs are synchronous type with a rating of 5 MVA, operating nominally at 0.9 lagging power factor [31,32]. The ratio of current transformer of relays (1,2,3,5,7,8,9,10), (11,12,15,16) and (4,6,13,14) is assumed as 120:1, 80:1 and 40:1 respectively. The 3-Φ short circuit results for near-end and far-end faults are presented in Table I.…”

Section: A Test System 1: Ieee 14-bus Networkmentioning

confidence: 99%

A Novel Approach for Optimum Coordination of Directional Overcurrent Relays Including Far-End Faults in Interconnected Power Systems

Rajput¹,

Pandya²

2016

IJET

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Abstract- I. INTRODUCTIONThe primary protection in distribution and sub-transmission networks and backup protection in transmission networks are usually provided using DOCRs [1]. For reducing the chances of excessive power outages, only faulted section of the power system is isolated using primary relays as quickly as possible. As long as the primary relay fails to operate, the backup relays have to instigate to clear the fault after the prescribed time interval. This practice is called relay coordination. The proper coordination of primary and backup relays is essential to ensure the reliability of protection scheme, which is achieved by locating the optimal values of PS and TMS. In modern multi-loop and multi-source interconnected power systems, finding the optimal PS and TMS using analytical methods becomes very hard. Alternatively, it can be easily solved by optimization techniques [2].In the last few years, several optimization techniques are employed to solve the relay coordination problem. Among the conventional methods, Linear Programming (LP) technique gained good recognition to solve this problem, including simplex, two-phase simplex and dual simplex methods [3][4][5]. The LP methods involve assumptions in PS, allowing for operating time of each relay as a linear function of TMS. In [6,7], Sequential Quadratic Programming (SQP) has been used in order to optimize both TMS and PS. Afterwards, Artificial Intelligence (AI) techniques are studied more to solve the coordination problem such as GA The HSA is one of the metaheuristic optimization methods which is developed by Z.W. Geem [22]. It has the characteristics of fast convergence speed, easy in concept and simple in implementation with only a few parameters and mathematical requirements [22,23]. Same as other metaheuristic methods, the performance of the HSA experiences a serious problem of sensitive parameters setting. Hence, fine tuning of the parameters are required, which can help the HSA to maintain a balance between diversification and intensification and to explore the population in the evolution process [24]. To improve the performance of HSA, IHSA is presented in

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An application of a tent map initiated Chaotic Firefly algorithm for optimal overcurrent relay coordination

Cited by 109 publications

References 25 publications

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

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

Research on Water Quality Assessment Model Based on Improved Three-Dimensional Nemerow Index Method and Firefly Algorithm

A Novel Approach for Optimum Coordination of Directional Overcurrent Relays Including Far-End Faults in Interconnected Power Systems

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