A Detailed Testing Procedure of Numerical Differential Protection Relay for EHV Auto Transformer

Ehsan, Umer; Jawad, Muhammad; Javed, Umar; Zaidi, Shabih H.; Rehman, Ateeq Ur; Rassõlkin, Anton; Althobaiti, Maha M.; Hamam, Habib; Shafiq, Muhammad

doi:10.3390/en14248447

Cited by 8 publications

(3 citation statements)

References 23 publications

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“…PSO algorithm has a great potential to optimize parameter settings (Behera et al, 2016). Apart from industrial processes the applications relating to power system can be found in the literature this research is focused on the power system application and optimization (Ehsan et al, 2021;Shehzad et al, 2021;Chi et al, 2021;Autonomous, 2021;Guasti Junior and Santos, 2021;Lau and Lim, 2018;Fan et al, 2019;Hu and Eberhart, 2002;Dashtdar et al, 2022;Soliman et al, 2021).…”

Section: Literature Reviewmentioning

confidence: 99%

AI based controller optimization for VSC-MTDC grids

et al. 2022

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Electric power industry is continually adopting new techniques to improve the reliability and efficiency of the energy system and to cope with the increasing energy demand and the associated technical challenges. In recent years, the maturation of Artificial Intelligence (AI) led researchers to solve various problems in the power system by using AI techniques. Voltage Source Converter is the result of advancements in the field of power electronics and semiconductors technology, which holds a promising future for the realization of smart grid, renewable energy integration, and HVDC transmission system. Usually hit and trial method or the design engineer’s experience is used for the manual tuning of the PI controllers, which cannot yield superior performance. The process becomes more complicated when multiple grids are involved, such as in VSC-based MTDC grids. This research article use a deep learning optimization technique for the tuning of the VSC controllers, which resulted in quick settling time, better slew rate, less undershoot and low overshoot. The deep learning neural network is trained through the Particle Swarm Optimization (PSO) algorithm to produce the best possible tuned or optimally tuned parameters for the controllers. The optimal tuning of the controller will result in an overall better performance of the converter and the grid. A four-layered deep learning neural network and a three-terminal MTDC grid were designed and simulated in MATLAB/SIMULINK environment.

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Section: Literature Reviewmentioning

confidence: 99%

AI based controller optimization for VSC-MTDC grids

et al. 2022

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“…In today's widespread population across the globe, and the fast revolution of technology from high voltage to low voltage power system networks, protection relay plays an important role in preserving the power system and eliminating abnormality within a few cycles [1], [2]. Yet, as power relay comes in different types and functions, such as current relay, and voltage relay, digital relays have developed more efficient functions in terms of current, voltage, and frequency measurement accuracy and power automation systems [3], [4]. Therefore, this work will investigate the numerical relay in terms of the internal logical microprocessor digitizing process as the bottleneck between the real and digitized spectrum to enhance the operation of power system protection.…”

Section: Introductionmentioning

confidence: 99%

Modeling of power numerical relay digitizer harmonic testing in Wavelet transform

Awada

Radwan

Nour³

et al. 2023

Bulletin EEI

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In today’s modern power devices and rapid growth power demands, the need for precise and accurate protection relays is a must for the power distribution system. That is, to segregate faulty sectors within fewer cycles, power relays should perform at the highest level of accuracy to detect abnormal conditions in power distribution. Therefore, this work will investigate the enhancement of the numerical relay testing in terms of harmonic distortions effect on the digitized output waveform as direct causes of relay failures. However, as it is an expensive process of testing the digitizing element of the numerical relay, this paper proposes a new algorithm of Wavelet transforms in power quality signal processing testing using MATLAB simulation. As this newly proposed method of advanced waveform analysis algorithm will enhance the testing process of digitizing elements, and reduce data compiling complexity, a comparison between conventional Fourier Transforms testing and Wavelet algorithm under abnormal conditions will be simulated based on inserting multi harmonics effect. As a result, based on the Wavelet bank of filters, de-noising, and decomposition structure filters, Wavelet has provided promising results in defining the effect of waveform distortion tripping time, fault location, total harmonic distortion, signal-to-noise ratio, and spurious-free dynamic range.

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“…In [16], a setup based on the IEC61850 standard was proposed to prevent the maloperation of the differential relay in the face of harmonic currents. In addition, in [17,18], the step-by-step test of the numerical differential relay, which is used to protect a power transformer, has been described using a relay tester device.…”

Section: Introductionmentioning

confidence: 99%

Proposing a New Approach to Generate the Differential Trajectory of the Differential Relays Using COMTRADE Files

et al. 2022

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The differential relay is subject to transient events such as inrush current, which may affect its correct operation. Therefore, evaluating the reliable and accurate operation of differential relays is important, which is only possible by mapping the relay’s differential trajectory on its setting curve. However, except for the SIGRA software, creating a differential trajectory only for Siemens relays, there is a gap in developing a method to extract this trajectory for other commercial differential relays. Hence, in this paper, a new method for generating the differential trajectory of the differential relay from their six input currents and mapping it on the relay setting curve is presented. The proposed method uses the differential relay COMTRADE files to access the relay input currents during an incident. The currents recorded in the COMTRADE files belong to the secondary sides of the current transformers (CTs). Accordingly, the impacts of the current transformers’ connections and the protected transformer’s connection type should be considered in the proposed study. The ability of the proposed method to generate the differential trajectory for different incidents that occurred on the power transformers is evaluated using simulation studies and also according to the experimental tests. The results illustrate the efficiency of the proposed method in generating the differential trajectory from the COMTRADE files. In addition, comparing the results of the proposed method with the results created in SIGRA software shows the higher accuracy of the proposed method in producing the differential trajectory of the differential relay.

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A Detailed Testing Procedure of Numerical Differential Protection Relay for EHV Auto Transformer

Cited by 8 publications

References 23 publications

AI based controller optimization for VSC-MTDC grids

AI based controller optimization for VSC-MTDC grids

Modeling of power numerical relay digitizer harmonic testing in Wavelet transform

Proposing a New Approach to Generate the Differential Trajectory of the Differential Relays Using COMTRADE Files

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