Formulation and Optimization of Overcurrent Relay Coordination in Distribution Networks Using Metaheuristic Algorithms

Salawudeen, Ahmed Tijani; Olaniyan, A.A.; Olarinoye, G. A.; Sikiru, Tajudeen H.

doi:10.1007/978-3-030-69143-1_30

Cited by 2 publications

(2 citation statements)

References 21 publications

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“…Meanwhile, DWT filtering dropped the number of data samples to 900 at the 1st level decomposition of approximation and detail filters and 800 at the 2nd level of decomposition, respectively (Figures 15-18). As the faulty voltage waveform comprises unnecessary and unwanted information data, more time is needed to distinguish failure [12]. Therefore, a major significant reduction in the number of collected voltage waveform data to essential data was achieved to improve the compiling process and number of decision variables as supported in [13].…”

Section: Simulation and Results Discussionmentioning

confidence: 99%

“…While protection relays operational time determined by an international standard such as the Institute of Electrical and Electronics Engineers (IEEE), International Electrotechnical Commission (IEC), the optimization process of this work focused on obtaining minimum operation times. As a result, this research has won among the publications that investigated power relay shorten time response such as in [13], using Harris Hawk Optimization (HHO) algorithm [12], by improving particle swarm optimization and linear programming (IPSO-LP) method, and [13,14] by a hybrid time-currentvoltage (TCV) method. However, in this research, a substantial reduction in response time was a direct effect due to the reduction of collected and assembled waveform data which will improve power system reliability and performance.…”

Section: Simulation and Results Discussionmentioning

confidence: 99%

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Numerical Voltage Relay Enhancement by Integrated Discrete Wavelet Transform

Awada¹

2021

Journal of Southwest Jiaotong University

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In today’s advanced technology and fast past energy demands, dependency on electrical power systems have reached the peak for daily human function in all life aspects. From high-voltage to low-voltage, big machines to a very articulated chipset, voltage optimization plays an important role in work operation and energy saving of electrical devices. Therefore, the importance of voltage relay in power systems is very significant to ensure normal operation, power system efficiency, power elements protection, and load safety. However, power system failures occur all the time due to numerous reasons which may lead to voltage variation (over-voltage or under-voltage). Such a variation can disrupt the essential elements of the power system and harm consumer load. Therefore, as network distribution cannot assure the same exact voltage at all day times, the need to optimize voltage relay has been a major issue in power system reliability and protection enhancements over the past few years. This paper aims to develop a unique technique to implement and test a new wavelet-based algorithm to modern numerical voltage relay to expedite voltage fault detection and precisely distinguish harmful voltage fluctuation levels. This enhancement will advance voltage waveform analysis to detect over-voltage/under-voltage phenomena, improve relay-tripping accuracy and relay response time. That is, wavelet transform has shown the ability to advance voltage relay operation with special properties of waveform de-noising, data extraction in an adjusted window, and data decomposition. Simulation of the Discrete Wavelet transform bank filters implemented into numerical voltage relay using MATLAB/Simulink has confirmed promising results as a quick voltage error detection based on few waveform data samples, faster data compiling process, and less complexity compared to typical conventional numerical voltage relay.

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Section: Simulation and Results Discussionmentioning

confidence: 99%

Section: Simulation and Results Discussionmentioning

confidence: 99%

Numerical Voltage Relay Enhancement by Integrated Discrete Wavelet Transform

Awada¹

2021

Journal of Southwest Jiaotong University

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Discrete Wavelet Transform Application to Three-Phase Power System Short Circuit Fault Detection

Alshrouf,

M. Akujuobi,

Awada

2023

Modern Applications of Wavelet Transform

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In power system distribution, the transmission line is the bottleneck between power generation and consumers. Therefore, any fault or failure in the transmission line is critical and must be detected in a very short time. Meanwhile, as Discrete Wavelet Transform has special characteristics, it can be implemented to analyze and detect short circuit faults for the three-phase power system transmission line and identify the types based on phase-to-phase and phase-to-ground faults analysis. In this work, MATLAB Simulink was used to generate faults using a power distribution system simulator. The three-phase currents were analyzed using the Discrete Wavelet transform algorithm by decomposing the three-phase and ground currents and obtaining the detailed coefficients. As a result, the maximum value of the detailed coefficients is used to distinguish between different types of faults. Simulation results of the proposed method have shown promising results in detecting short circuit faults and identifying types of faults effectively.

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Formulation and Optimization of Overcurrent Relay Coordination in Distribution Networks Using Metaheuristic Algorithms

Cited by 2 publications

References 21 publications

Numerical Voltage Relay Enhancement by Integrated Discrete Wavelet Transform

Numerical Voltage Relay Enhancement by Integrated Discrete Wavelet Transform

Discrete Wavelet Transform Application to Three-Phase Power System Short Circuit Fault Detection

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