Implementation of genetic algorithm to find the optimal timing of overcurrent relays

Pandey, Anand Kumar; Kirmani, Sheeraz

doi:10.1109/epepemc.2016.7752031

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…The IEEE-eight bus system consists of seven transmission lines, two generators, two step-up transformers and extension network at bus four with 400 MVA short circuit [20]. Therefore, we have fourteen distance relays and fourteen DOC relays according to the number of transmission lines.…”

Section: Resultsmentioning

confidence: 99%

“…In Table 2 used the ETAP program to obtain three-phase short circuit current for near and far-end faults and Figure 7 shows the test system. In [20][21][22][23][24][25] the range of coordination time interval is (0.2 -0.5) second. So the CTI1 and CTI2 in equation from 1 to 4 will be chosen equal to 0.2 seconds in case (1) and in case (2) CTI =0.3 in equation 1 and 2 and CTI2= 0.2 in equation 3 and 4 and the TMS has been bounded from 0.1 to 1.1 continuous for lower and upper bounds respectively to each relay.…”

Section: Resultsmentioning

confidence: 99%

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Coordination of directional overcurrent and distance relays based on nonlinear multivariable optimization

Almuhsen

Sultan

2020

IJEECS

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To ensure stability, security, and protection of electrical equipment from the damage the suitable coordination must be made in interconnected networks. In this paper, the nonlinear multivariable optimization techniques have been used with different performance indexes: Sequential quadratic programming (SQP), Sequential quadratic programming legacy (SQP-Legacy), Interior-Point and Active-Set for IEEE- 8 bus test system. This system consists of twenty-eight protective relays divided into fourteen directional overcurrent relays (DOCR) and fourteen distance relays (DR). It has been tested in the ETAP environment to obtain three-phase short circuit current at the near and far end faults and operating time for all DOC relays for near-end fault as well as test the second zone time for distance relays (TZ2) with pilot signal (WP)and without pilot signal (WOP) of the proposed algorithm was used to reduce overall operating time of DOC relays and obtain optimal values for time multiplier setting (TMS) and TZ2 with the different coordination time interval (CTI) between main and backup relays. The simulation results were validated in ETAP program prove that the effectiveness of the Active-Set to minimize the TMS and TZ2 for the system.<em> </em>

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Coordination of directional overcurrent and distance relays based on nonlinear multivariable optimization

Almuhsen

Sultan

2020

IJEECS

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Using of Genetic algorithm to obtain proper Coordination of Directional overcurrent relays.

Almuhsen

Sultan

2020

IOP Conf. Ser.: Mater. Sci. Eng.

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Transmission and distribution lines are the most parts in power systems affected by faults during their operation. Therefore, it is required to maintain suitable coordination between all the protection relays is used to protect them during faults. In this paper, a genetic algorithm (GA) is utilized to solve the coordination problems of the directional overcurrent relays (DOC) in interconnected systems. GA is used to obtain the optimum time multiplier setting (TMS) of these relays. A comparison has been made with previous work in literature to show the efficiency and accuracy of the proposed algorithm and the total operatination time of DOC in the network has been minimized. The results confirm the superior performance of the proposed algorithm and these results have been validated by using an electric transient and analysis program(ETAP).

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Adaptive Coordination Mechanism of Overcurrent Relays using Evolutionary Optimization Algorithms for Distribution Systems with DGs

Orazgaliyev

Tleubayev

Zholdaskhan

et al. 2019

2019 International Conference on Smart Energy Systems and Technologies (SEST)

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Implementation of genetic algorithm to find the optimal timing of overcurrent relays

Cited by 4 publications

References 8 publications

Coordination of directional overcurrent and distance relays based on nonlinear multivariable optimization

Coordination of directional overcurrent and distance relays based on nonlinear multivariable optimization

Using of Genetic algorithm to obtain proper Coordination of Directional overcurrent relays.

Adaptive Coordination Mechanism of Overcurrent Relays using Evolutionary Optimization Algorithms for Distribution Systems with DGs

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