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Journal articles on the topic 'Modeling of relay protection'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Khoa, N. M., and D. D. Tung. "Modeling for Development of Simulation Tool: Impact of TCSC on Apparent Impedance Seen by Distance Relay." Engineering, Technology & Applied Science Research 8, no. 5 (2018): 3332–37. http://dx.doi.org/10.48084/etasr.2199.

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The impact of thyristor controlled series capacitor (TCSC) on distance protection relays in transmission lines is analyzed in this paper. Voltage and current data are measured and collected at the relay locations to calculate the apparent impedance seen by distance protection relays in the different operating modes of the TCSC connected to the line. Short-circuit faults which occur at different locations on the power transmission line are considered in order to locate the fault for the purpose of evaluating the impact of TCSC on the distance protection relay. Matlab/Simulink simulation softwar

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Khoa, Ngo Minh, and Doan Duc Tung. "Modeling for Development of Simulation Tool: Impact of TCSC on Apparent Impedance Seen by Distance Relay." Engineering, Technology & Applied Science Research 8, no. 5 (2018): 3332–37. https://doi.org/10.5281/zenodo.1490318.

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The impact of thyristor controlled series capacitor (TCSC) on distance protection relays in transmission lines is analyzed in this paper. Voltage and current data are measured and collected at the relay locations to calculate the apparent impedance seen by distance protection relays in the different operating modes of the TCSC connected to the line. Short-circuit faults which occur at different locations on the power transmission line are considered in order to locate the fault for the purpose of evaluating the impact of TCSC on the distance protection relay. Matlab/Simulink simulation softwar

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3

Nwachi, G.U., P.I. Obi, E.A. Amako, and C.S. Ezeonye. "Modeling and Simulation of a Coordinated Power System Protection using Overcurrent Relay." Nigerian Research Journal of Engineering and Environmental Sciences 7, no. 1 (2022): 238–49. https://doi.org/10.5281/zenodo.6725273.

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<em>The efficient and reliable operation of a protection system cannot be overemphasized as any shortfall in such system has both huge financial implications and makes the station dangerous and unsafe. The data for the overcurrent relay coordination analysis used in this study was obtained from the Ohiya Umuahia 132/33 kV substation of the Transmission Company of Nigeria (TCN) while the electric transient analyzer program (ETAP) software was used for the analysis. Firstly, a three-phase (3-phase) short circuit test was conducted on the network at the 33 kV busbar. Then, a detailed sequence of

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Mishra, Debani Prasad, Rudranarayan Senapati, Suman Patra, and Bimalendu Mishra. "Enhancing the Performance of Reverse Power Relay for Generator Protection." WSEAS TRANSACTIONS ON POWER SYSTEMS 16 (December 28, 2021): 336–43. http://dx.doi.org/10.37394/232016.2021.16.33.

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The generator is the most important component in energy generation, and it needs to be protected from both internal and external disturbance. Reverse power relays (RPR), with the directional relay being the most commonly utilized as the principal safeguard, are used to trip the turbine generators to minimize the damage of prime mover. Modeling tools are helpful for learning the basics of a power system, especially for newbie engineers. These tools assist novice engineers in modulating the system in both normal and abnormal situations. This paper demonstrates how to model and simulate a digital

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Al-Badrany, Ahmad A. "Modeling and Simulation of Out of Step Blocking Relay for Power Swing using Concentric Polygons Scheme." Tikrit Journal of Engineering Sciences 17, no. 1 (2010): 21–31. http://dx.doi.org/10.25130/tjes.17.1.08.

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This paper investigates a power swing effect on a distance protection relay performance installed on (HV/EHV) transmission line as well as power system stability. A conventional distance relay can’t properly operate under transient stability conditions; therefore, it cause mol-operation, and it will adversely impact on its trip signals. To overcome this problem, the Out Of Step (OOS) relay has modeled and simulated to joint with distance relay to supervise and control on its trip signals response. The setting characteristics technique of the OOS based on concentric polygons scheme method to de

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Marei, Marwa M., Manal H. Nawir, and Ali Abdul Razzaq Altahir. "An improved technique for power transformer protection using fuzzy logic protective relaying." Indonesian Journal of Electrical Engineering and Computer Science 22, no. 3 (2021): 1754–60. https://doi.org/10.11591/ijeecs.v22.i3.pp1754-1760.

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The three-phase power transformer in the transmission or distribution substations represents one of the essential devices on electric power networks. Losing this devise cause a disconnection of the power utility to a large number of electrical loads. The robust protection system must be designed to protect the device during abnormal operations. A complete protection system for a poly-phase power transformer for one of the Karbala transmission networks (East Karbala substation) is modeled and simulated, adopting a fuzzy logic protective relaying using MATLAB/SIMULINK environment. This study dis

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Yang, Ting, Xiyang Qian, and Liqing Ren. "Application of Artificial Intelligence Algorithm in Relay Protection of Distribution Network." International Transactions on Electrical Energy Systems 2022 (August 29, 2022): 1–12. http://dx.doi.org/10.1155/2022/7138367.

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A distribution network in supply chain management increases product reachability and handling density across different warehouses and customers. Relays in the distribution network prevent congestion, supply stagnancy, and delayed deliveries. Protecting the relay functions and streamlining them are tedious due to the varying vehicle and goods densities. This article introduces a populous relay management scheme (PRMS) for multi-access in delivery networks to address the problem above. The proposed scheme relies on vehicle and goods movement frequency for improving the relay utilization without

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Zakri, Azriyenni Azhari, and Fahrul Rozi. "MODELING TO IMPROVE THE PERFORMANCE OF REVERSE POWER RELAY IN GENERATOR." SINERGI 24, no. 3 (2020): 231. http://dx.doi.org/10.22441/sinergi.2020.3.008.

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The generator is the primary component in electricity generation and requires a protection system from internal and external interference that occurs. This study considers how to improve the performance of relays in power plants. A model of a generator that is executed in a fault condition to reset the protective equipment, namely Reverse Power Relay (RPR). The study is intended to model the state of internal and external fault on the generator by applying a working principle of RPR. The model is designed to anticipate the actual fault in the generator. The simulation results obtained output s

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9

Cherkashyna, Veronika, and Vladyslav Tsyupa. "ANALYSIS OF DIFFERENTIAL RELAY PROTECTION ALGORITHMS AND THEIR MODELLING IN MATLAB." Bulletin of the National Technical University "KhPI". Series: Energy: Reliability and Energy Efficiency, no. 1 (6) (July 9, 2023): 113–18. http://dx.doi.org/10.20998/2224-0349.2023.01.13.

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The paper is devoted to identifying the prospects for software implementation of differential relay protection. The purpose of this study was to analyse the algorithms of the devices' operation, which allowed to create a mathematical model in the MATLAB software environment with the prospect of integration in the form of a single regional relay protection server into the unified energy system of Ukraine. It has been established that virtual models have both advantages and disadvantages compared to digital-analog devices. Their positive feature is that, due to the block principle of constructio

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Doletskaya, Larisa I., Vladislav I. Ziryukin, and Roman V. Solopov. "An electric power system object model creating experience for researching the operation of digital means of relay protection and automation." Journal Of Applied Informatics 16, no. 4 (2021): 83–95. http://dx.doi.org/10.37791/2687-0649-2021-16-4-83-95.

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The article is devoted to the operation logic modeling of relay protection and automation terminals in order to their verification, adjustment and further exploitation. The problem of adjusting protection terminals mutual interaction is unlikely to appear in real conditions due to wide variety of them. The authors propose a solution to this problem by creating a verified model based on a digital twin of an electric power network section created in the MatLab software package. This model helps to study the functioning of the researched protection settings in nominal, repair, emergency and post-

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Emad, Awada, Radwan Eyad, Nour Mutasim, Al-Qaisi Aws, and Y. Al-Rawashdeh Ayman. "Modeling of power numerical relay digitizer harmonic testing in wavelet transform." Bulletin of Electrical Engineering and Informatics 12, no. 2 (2023): 659~667. https://doi.org/10.11591/eei.v12i2.4553.

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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 el

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Kulikov, Aleksandr, Pavel Ilyushin, and Anton Loskutov. "Enhanced Readability of Electrical Network Complex Emergency Modes Provided by Data Compression Methods." Information 14, no. 4 (2023): 230. http://dx.doi.org/10.3390/info14040230.

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Current microprocessor-based relay protection and automation (RPA) devices supported by IEC 61850 provide access to a large amount of information on the protected or controlled electric power facility in real time. The issue of using such information (Big Data) in order to improve the parameters of technical modification of intelligent electronic devices at digital substations remains unaddressed. Prerequisites arise for designing modern power systems with relay protection devices of a new generation based on new information algorithms. In particular, it is expedient to develop multi-parameter

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Chaka, Igor' Yur'evich. "Modeling and experimental research operation of the relay protection trigger to increase security electrical networks." Vestnik of Astrakhan State Technical University. Series: Management, computer science and informatics 2025, no. 2 (2025): 14–26. https://doi.org/10.24143/2072-9502-2025-2-14-26.

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A special feature of the existing relay protections of power transmission lines (PTL) is their operation on an already existing damage in the electrical network, when the short-circuit current already acts on the primary equipment and on the parameters of the entire electrical network, and when approaching an unacceptable distance to the line of people passes through the human body. To date, there are no relay protection devices capable of shutting down PTL before an emergency or abnormal line operation occurs: when people, mechanisms, or trees approach it at an unacceptable distance. The prac

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14

Zhang, Jing Jing. "Research and Summary on Reliability of Relay Protection System." Advanced Materials Research 433-440 (January 2012): 6755–59. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.6755.

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In electric power system, relay protection system can powerfully safeguard secure and stable operation of the first circuit equipment; it’s an important task to ensure reliable operation of protection system. Research on reliability of it now arises much attention at home and abroad. The paper carries out detailed research survey on reliability of relay protection system, which contains AC input circuit, digital relay protection equipment and operation output circuit. In general it also contains automatic equipment and telecommunication network etc. It belongs to repairable system; state-space

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15

Awada, Emad, Eyad Radwan, Mutasim Nour, Aws Al-Qaisi, and Ayman Y. Al-Rawashdeh. "Modeling of power numerical relay digitizer harmonic testing in Wavelet transform." Bulletin of Electrical Engineering and Informatics 12, no. 2 (2023): 659–67. http://dx.doi.org/10.11591/eei.v12i2.4553.

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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

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16

Sučević, Nikola, Saša Gligorov, and Zoran Stojanović. "Analysis of operation of transformer differential protection under current transformer saturation: Software simulations and relay testing." Zbornik radova Elektrotehnicki institut Nikola Tesla 31, no. 31 (2021): 195–216. http://dx.doi.org/10.5937/zeint31-35037.

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In the paper the analyses of the current transformer saturation influence to operation of differential protection are presented. Analyses are performed using a simulation tool and a relay model, as well as using the physical relay by injecting test currents from test equipment on relay inputs. The comparison of relay behavior in these two analyses has been performed and discussed. Network modeling has been performed in DIgSILENT PowerFactory and physical relay testing using DOBLE test equipment.

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Shumikhin, Andrey Yu, Roman V. Kirillov, and Regina T. Khazieva. "COMPUTER SIMULATION OF OPERATION OF SUBSTATION RELAY PROTECTION IN MATLAB SIMULINK PACKAGE." Electrical and data processing facilities and systems 20, no. 3 (2024): 67–79. http://dx.doi.org/10.17122/1999-5458-2024-20-3-67-79.

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Relevance Modern electric power systems require reliable and high-speed relay protection, which is necessary to prevent accidents and ensure stable operation of the power system. With the development of computer technology, it becomes possible to use modern software tools for modeling and analyzing the operation of relay protection. Matlab Simulink provides the necessary toolset that allows you to accurately simulate various types of relay protection and their interaction with other network components. Aim of research This article simulates the relay protection of a substation in order to furt

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Puspita Ayu, Yolanda Dewi, Daeng Rahmatullah, and Istiyo Winarno. "Koordinasi Adaptif DOCR Pada Sistem Transmisi Loop Multi Generator Menggunakan Modified Firefly Algorithm-Artificial Neural Network." Jurnal Ilmiah Telsinas Elektro, Sipil dan Teknik Informasi 4, no. 1 (2022): 31–40. http://dx.doi.org/10.38043/telsinas.v4i1.2093.

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Protection system is a very important component in the electric power distribution system. With good reliability, the distribution of electrical power will be better, one of which is by minimizing disruption to the system quickly, precisely and accurately. Components used in protection systems are directional overcurrent relays (DOCR). In this study proposed optimal and adaptive protection coordination using the Modified Firefly Algorithm-Artificial Neural Network (MFA-ANN) tested on the IEEE 9 real bus loop system with 4 generation combinations. Optimization using MFA will get the Time Delay

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Shaikh, Naeem Jilani, and Prabhood Kumar a. Khampariy. "Design of Digital Reverse Power Relay Model for Generator Protection." International Journal for Research in Applied Science and Engineering Technology 10, no. 5 (2022): 3975–81. http://dx.doi.org/10.22214/ijraset.2022.43302.

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Abstract: Generators are one of the most important parts of the power system. Faults at the generator lead to severe failures and fatal accidents. Hence, generators’ protection is a major concern, especially from faults – voltage and current fluctuations, short circuit faults, frequency variations, over-fluxing, flow of reverse power, etc. In this project, a protection scheme is presented for power flow in opposite direction that is flow of power from grid to the generator, due to which the generator starts consuming and acts as a load. Modelling tools are important to have a basic idea of pow

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Shin, Hyun, Sang Heon Chae, and Eel-Hwan Kim. "Design of Microgrid Protection Schemes Using PSCAD/EMTDC and ETAP Programs." Energies 13, no. 21 (2020): 5784. http://dx.doi.org/10.3390/en13215784.

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Steady-state, harmonics, and transient analysis of a power system by using a detailed simulation model is essential to microgrid operation before the installation of new power facilities, because the microgrid, which is a small-scale independent power grid consisting of distributed resources and an energy storage system, has no choice but to include many inverters consisting of switching devices. Accordingly, in the case of an accident in a microgrid system, various power system simulation tools must be used to calculate the fault current for grid protection components. Specifically, Modelling

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Aluynov, A., O. Vyatkina, E. Gracheva, and A. Nemirovskiy. "Modeling of operating modes of relay protection in electrical networks with insulated neutral." E3S Web of Conferences 288 (2021): 01100. http://dx.doi.org/10.1051/e3sconf/202128801100.

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This work aims to study relay protection and automation in insulated neutral networks to identify additional criteria for choosing the type of earthing. To calculate the single-phase earth fault currents as a function of the operating modes of the electrical substation, the 10 kV network of the electrical substation was simulated in the software package. The advantages and disadvantages of centralized and non-centralized protections are shown. The paper presents the sequence of actions necessary for the correct operation of directional zero sequence protection.

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Novash, I. V. "MODELING OF POWER SYSTEMS AND TESTING OF RELAY PROTECTION DEVICES IN REAL AND MODEL TIME." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 60, no. 3 (2017): 198–210. http://dx.doi.org/10.21122/1029-7448-2017-60-3-198-210.

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The methods of modelling of power system modes and of testing of relay protection devices with the aid the simulation complexes in real time and with the help of computer software systems that enables the simulation of virtual time scale are considered. Information input protection signals in the simulation of the virtual model time are being obtained in the computational experiment, whereas the tests of protective devices are carried out with the help of hardware and software test systems with the use of estimated input signals. Study of power system stability when modes of generating and con

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Ivanov, Sergey O., Maxim V. Nikandrov, and Leonid A. Slavutskii. "NEURAL NETWORK MODELING OF RELAY PROTECTION WITH A TIME DELAY." Vestnik Chuvashskogo universiteta, no. 3 (September 29, 2022): 53–60. http://dx.doi.org/10.47026/1810-1909-2022-3-53-60.

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Modern electric power facilities – stations and high-voltage substations – have become digital objects with the active use of high-speed local networks directly involved in the technological process. Management, analysis and control of information exchange in the digital substation of the power system require the development of new means and approaches. For these purposes, machine learning methods can be used, in particular the apparatus of artificial neural networks (ANN). The paper shows the possibilities of using direct propagation ANNs (multilayer perceptrons) for modeling and identifying

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H., Sekhane, Labed D., and A. Labed M. "Modelling and performance testing of a digital over-current relay enhanced designed model." Electrical Engineering & Electromechanics, no. 3 (May 30, 2022): 71–78. https://doi.org/10.20998/2074-272X.2022.3.10.

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<strong><em>Introduction. </em></strong><em>The over-current relay is widely used to protect distribution and transmission electrical systems against excessive currents occurring due to short circuit or overload conditions. Many works have been carried out in the field of models simulation design of digital over-current relays in the literature, but unfortunately many of them are more complex design models, have very slow execution time and only work in simple faults cases. <strong>Purpose.</strong> The purpose of this work is to present the performance of a modified and improve

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Abd. Hakim Butar-Butar, Agus Junaidi, Marwan Afandi, Sempurna Perangin-Angin, and Rahmaniar. "Modeling and Analysis of Asymmetrical Faults for Relay Settings in Electric Power Protection System Learning." Britain International of Exact Sciences (BIoEx) Journal 4, no. 3 (2022): 220–31. http://dx.doi.org/10.33258/bioex.v4i3.757.

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This study examines the analysis of Asymmetrical fault, namely single-phase ground faults for e-jobsheet products based on Information and Communication Technology (ICT) or utilizing computer programs for study. A study of short-circuit faults in the electric power system, is used to solve problems in the field of reliability and protection. the electric power system, namely the handling of single-phase short-circuit faults to ground which, if not neutralized, cause equipment damage to the electric power system. Parameters from modeling and analysis of asymmetrical faults are used for setting

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Iliev, Iliya, Andrey Kryukov, Konstantin Suslov, et al. "Modeling of Measuring Transducers for Relay Protection Systems of Electrical Installations." Sensors 25, no. 2 (2025): 344. https://doi.org/10.3390/s25020344.

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The process of establishing relay protection and automation (RPA) settings for electric power systems (EPSs) entails complex calculations of operating modes. Traditionally, these calculations are based on symmetrical components, which require the building of equivalent circuits of various sequences. This approach can lead to errors both when identifying the operating modes and when modeling the RPA devices. Proper modeling of measuring transformers (MTs), symmetrical component filters (SCFs), and circuits connected to them effectively solves this problem, enabling the configuration of relay pr

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Thote, Pankaj B., Mohammad Ashar, Afsar Khan, and Chandrakant Rathore. "Hardware Model of IDMT Protection Scheme Using Numerical Relay." SAMRIDDHI : A Journal of Physical Sciences, Engineering and Technology 13, no. 01 (2021): 42–47. http://dx.doi.org/10.18090/samriddhi.v13i01.8.

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Protection plays a crucial role in power system engineering, especially current protection. Hence, the authors have modelled and simulated various operating characteristics of overcurrent relay in MATrix LABoratory (MATLAB)/Simulink environment in this paper. The proposed work has been divided in two phases. In the first part, modeling of Inverse Definite Minimum Time (IDMT) overcurrent relay on MATLAB/Simulink platform has been done, and the simulation has been carried out. The second part IDMT type overcurrent relay has been implemented on AVR microcontroller with intelligent current sensing

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Sauhats, Antans, Andrejs Utans, Gregory Pashnin, and Dmitrijs Antonovs. "Out-of-Step Relays Testing Procedure." Scientific Journal of Riga Technical University. Power and Electrical Engineering 28, no. 1 (2011): 9–14. http://dx.doi.org/10.2478/v10144-011-0001-2.

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Out-of-Step Relays Testing ProcedureThe paper presents out-of-step (OOS) protection device testing methodology under close-to-real power system operation conditions. The power system stability modelling software is used as source of test signals. The accurate modelling of power system in conjunction with dynamical modelling features allows the correct choice of the most reliable OOS protection scheme. Methodology was applied for out-of-step relay "AGNA" testing and device settings verification.

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Dmitrichenko, V. I., D. A. Ni, M. A. Dzhetpisov, and B. Baurzhan. "Combined ground-fault relay protection in 6–10 kV power grids." iPolytech Journal 26, no. 1 (2022): 53–69. http://dx.doi.org/10.21285/1814-3520-2022-1-53-69.

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In the present work, engineering decisions for combined ground-fault relay protection in 6–10 kV power grids are addressed. For objects in electrical grids having a voltage of 6–10 kV, simple relay protection was used: overcurrent protection and current cutoff. The most common algorithms for single phase-to-earth fault relay protection were analysed and compared. The modelling allowed a scheme for automatic transfer switch to be designed. Operation algorithms of relay protection and automatics were established, considering the properties of an electrical grids section and the characteristics o

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Patil, Krishna L. "Simulation and Modeling of Distribution System Based on Short Circuit Analysis." International Scientific Journal of Engineering and Management 03, no. 03 (2024): 1–9. http://dx.doi.org/10.55041/isjem01473.

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In the View of sizing an electrical installation and the required equipment, as well as determining the means required for the protection of life and property, Problems that may occur at any point in the Power System. There are two major problems that can occur in power system; these are open circuits fault and short circuits fault. Of the two, short circuit is the most dangerous because it can lead to very high fault currents and these currents can have very substantial effects such as electromechanical forces and thermal heating on equipment that may need replacement of equipment and may eve

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Li, Fei, and Luochen Zhuyuan. "Reliability and Dynamic Performance Simulation Based on Relay Protection Summary." Journal of Physics: Conference Series 2074, no. 1 (2021): 012020. http://dx.doi.org/10.1088/1742-6596/2074/1/012020.

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Abstract With the development of science and technology, national security and social life can not be separated from electricity every moment, and the safety of power grid is becoming more and more important. At present, the research on relay protection model in dynamic simulation of power system in China is still in the primary stage. Because the research is not deep enough, the control law of relay protection elements can not be well grasped. The failure can not be handled well. Therefore, in order to ensure the safe operation of the power system, we must first strengthen the grid structure

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Chen, Qing, Xiaotong Zhou, Mengxuan Sun, and Xiaotong Zhang. "Fault Tracking Method for Relay Protection Devices." Energies 14, no. 9 (2021): 2723. http://dx.doi.org/10.3390/en14092723.

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A method of fault tracking for relay protection devices is presented in this paper. Fault tracking means that after the failure of relay protection devices, the anomalies and warning information are obtained through data-mining technology, and then, the fault tracking algorithm is used to find the cause of failure. Let us take microcomputer protection as an example: Firstly, the common failure symptoms and the prior probability of failure causes can be collected through empirical field data. Then, the concept of an event set is proposed; thus, the causes set and the symptoms set of failure can

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Umarova, Petimat L., and Liliya F. Musina. "DEVELOPMENT AND TESTING OF ADAPTIVE RELAY PROTECTION SYSTEMS." EKONOMIKA I UPRAVLENIE: PROBLEMY, RESHENIYA 11/9, no. 152 (2024): 69–76. https://doi.org/10.36871/ek.up.p.r.2024.11.09.010.

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The article is devoted to the development and testing of adaptive relay protection systems that ensure reliable and fast shutdown of emergency sections in power grids. The prin-ciples of adaptive algorithms, the use of real-time network state data for dynamic adjustment of protection parameters, as well as artificial intelligence methods for analyzing and predicting faults are considered. The system architecture is presented, including data collection modules, control elements, and communication interfaces. The effectiveness of the proposed approaches is assessed based on digital modeling and

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Lowczowski, Krzysztof, Jozef Lorenc, Jerzy Andruszkiewicz, Zbigniew Nadolny, and Jozef Zawodniak. "Novel Earth Fault Protection Algorithm Based on MV Cable Screen Zero Sequence Current Filter." Energies 12, no. 16 (2019): 3190. http://dx.doi.org/10.3390/en12163190.

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This paper presents novel zero sequence current filter and earth fault protection relay, which utilize cable screens earthing current in protection algorithm. Different problems connected with state of the art of zero sequence current filters and protection relays are presented and compared with the proposed solution. The presented concept is verified in PowerFactory simulation software, experiment concerning modeling the earth fault current flow in medium voltage (MV) cable supplied from the low voltage (LV) network and measurements in the MV network in the Polish distribution system. The pro

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Neftissov, Alexandr, Assiya Sarinova, Ilyas Kazambayev, Lalita Kirichenko, Oleksandr Kuchanskyi, and Adil Faizullin. "Determination of the speed of a microprocessor relay protection device of open architecture with a reed switch and the industrial internet of things." Eastern-European Journal of Enterprise Technologies 2, no. 5 (122) (2023): 20–30. http://dx.doi.org/10.15587/1729-4061.2023.276588.

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The paper presents the development of a microprocessor-based relay protection device on open architecture. Currently, there is a problem with modern microprocessor relay protection: the impossibility to replace the damaged element with alternatives from other manufacturers. The solution to this problem is the use of devices with open architecture. The study developed a structural model of a microprocessor-based relay protection device based on an open architecture with the industrial Internet of things application. Open architecture is achieved through open protocols and the principle of modul

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Alexandr, Neftissov, Sarinova Assiya, Kazambayev Ilyas, Kirichenko Lalita, Kuchanskyi Oleksandr, and Faizullin Adil. "Determination of the speed of a microprocessor relay protection device of open architecture with a reed switch and the industrial internet of things." Eastern-European Journal of Enterprise Technologies 2, no. 5(122) (2023): 20–30. https://doi.org/10.15587/1729-4061.2023.276588.

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The paper presents the development of a microprocessor-based relay protection device on open architecture. Currently, there is a problem with modern microprocessor relay protection: the impossibility to replace the damaged element with alternatives from other manufacturers. The solution to this problem is the use of devices with open architecture. The study developed a structural model of a microprocessor-based relay protection device based on an open architecture with the industrial Internet of things application. Open architecture is achieved through open protocols and the principle of modul

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Saleem, Adeel, Atif Iqbal, Kashif Mehmood, Muhammad Adnan Samad, Muhammad Aftab Hayat, and Usamah Manzoor. "Modelling and Implementation of Microprocessor Based Numerical Relay for Protection Against Over/Under Current, Over/Under Voltage." Journal of Computational and Theoretical Nanoscience 17, no. 2 (2020): 1332–38. http://dx.doi.org/10.1166/jctn.2020.8809.

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This paper includes the design and implementation of Numerical Relay that can protect the equipment against over-voltage, over-current and under voltage. Although, every power system is subjected to faults and these faults can severe damage to the power system. Therefore, it is necessary to observe and resolve in time to avoid a large damage such as blackouts. For this purpose, there should be some sensing devices, which give signals to the circuit breakers for preventing of power system damages. The multipurpose relays have much importance role in power system for sensing and measuring the am

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Marei, Marwa M., Manal H. Nawir, and Ali Abdul Razzaq Altahir. "An improved technique for power transformer protection using fuzzy logic protective relaying." Indonesian Journal of Electrical Engineering and Computer Science 22, no. 3 (2021): 1754. http://dx.doi.org/10.11591/ijeecs.v22.i3.pp1754-1760.

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The three-phase power transformer in the transmission or distribution substations represents one of the essential devices on electric power networks. Losing this devise cause a disconnection of the power utility to a large number of electrical loads. The robust protection system must be designed to protect the device during abnormal operations. A complete protection system for a poly-phase power transformer for one of the Karbala transmission networks (East Karbala substation) is modeled and simulated, adopting a fuzzy logic protective relaying using MATLAB/SIMULINK environment. This study dis

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Haijun, Xiong, and Zhang Qi. "A New Method for Setting Calculation Sequence of Directional Relay Protection in Multi-Loop Networks." International Journal of Emerging Electric Power Systems 17, no. 4 (2016): 385–91. http://dx.doi.org/10.1515/ijeeps-2015-0208.

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Abstract Workload of relay protection setting calculation in multi-loop networks may be reduced effectively by optimization setting calculation sequences. A new method of setting calculation sequences of directional distance relay protection in multi-loop networks based on minimum broken nodes cost vector (MBNCV) was proposed to solve the problem experienced in current methods. Existing methods based on minimum breakpoint set (MBPS) lead to more break edges when untying the loops in dependent relationships of relays leading to possibly more iterative calculation workloads in setting calculatio

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Mohammed Mejdhab, Kamal, and Ali N. Hamoodi. "Distance Relay Setting for One Zone of Transmission Line." NTU Journal of Engineering and Technology 3, no. 4 (2024): 35–41. https://doi.org/10.56286/ntujet.v3i4.1063.

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The objective of this work is to determine the fault location for one zone. Impedance relays constitute a vital component of power systems, specifically within the real value of transmission system, which was accomplished through the utilization of MATLAB/SIMULINK. The sim power system toolbox was employed to enable the intricate modeling of the distance relay, transmission line, and fault simulation. Within the modeling phase, the specific fault type chosen was single line to ground (SLG), Line-to-Line, while the protection scheme was established as the impedance type distance characteristic.

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Sekhane, H., D. Labed, and M. A. Labed. "Modelling and performance testing of a digital over-current relay enhanced designed model." Electrical Engineering & Electromechanics, no. 3 (May 30, 2022): 71–78. http://dx.doi.org/10.20998/2074-272x.2022.3.10.

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Introduction. The over-current relay is widely used to protect distribution and transmission electrical systems against excessive currents occurring due to short circuit or overload conditions. Many works have been carried out in the field of models simulation design of digital over-current relays in the literature, but unfortunately many of them are more complex design models, have very slow execution time and only work in simple faults cases. Purpose. The purpose of this work is to present the performance of a modified and improved model of a digital over-current relay designed in Simulink/M

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Kyryk, V., and S. Ivanitskyi. "ANALYSIS OF EXISTING METHODS OF RESEARCHING GEOMAGNETICALLY INDUCED CURRENTS." Sciences of Europe, no. 108 (January 11, 2023): 38–41. https://doi.org/10.5281/zenodo.7523825.

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An analysis of modern achievements and current issues related to research on the influence of geomagnetic disturbances and geomagnetic induction currents, methods of their calculation and modeling was performed. Taking into account the impact of geomagnetic disturbances on the operation of power equipment, including power lines, transformers, relay protection.

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Huang, C. W., S. R. Wang, and W. T. Hsu. "Application of the percentage differential relay and stator earth fault protection in synchronous generators." Journal of Physics: Conference Series 2878, no. 1 (2024): 012001. http://dx.doi.org/10.1088/1742-6596/2878/1/012001.

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Abstract Synchronous generators play a vital role in the power system. The relay protection distributed in the system can quickly remove the fault, effectively respond to it, and solve the problem. In this paper, the characteristics of a synchronous generator neutral ungrounded are analyzed when various unsymmetrical and symmetrical faults occur in the internal and external areas, and the percentage differential relay is used to solve the problem of short circuit faults. For the single line-to-ground fault, the stator earth fault protection is also introduced to compensate for the shortcomings

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Cárdenas, David, Carlos Chavez, Julio Rodríguez, Gemán Solis, and Luis Morales. "Mathematical Analysis and Simulation in Matlab of Differential Protection in Power Transformer with Two Windings." INGENIO 5, no. 1 (2022): 4–11. http://dx.doi.org/10.29166/ingenio.v5i1.3785.

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This project deals with the realization of Mathematical Modeling and simulation in MATLAB of Differential Protection in Two-Winding Power Transformers, the same one that will be part of the Salesian Polytechnic University, Guayaquil headquarters; will have the objective of simulating the operating conditions of the protection equipment (SEL 587) found in a Substation, obtaining the equation that governs the differential protection operations of said relay, by theoretically analyzing the system conditions, both under normal conditions and for any fault event (external fault, internal fault) on

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Shutari, Hussein, Chin-Leong Wooi, Haziah Abdul Hamid, Mohammed Imran Mousa, Wen-Shan Tan, and Hadi Nabipour-Afrouzi. "Modelling and Simulation of Definite Time Over Current Relay for Radial Systems Protection." Journal of Advanced Research in Dynamical and Control Systems 11, no. 12-SPECIAL ISSUE (2019): 785–94. http://dx.doi.org/10.5373/jardcs/v11sp12/20193277.

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Nedelchev, Nedelcho, and Misho Matsankov. "Increasing the Sensitivity of the Digital Relay Protection Against Turn-to-turn Short Circuits And Asymmetries In Wind Power Generators." E3S Web of Conferences 186 (2020): 03001. http://dx.doi.org/10.1051/e3sconf/202018603001.

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The paper describes the implementation of neural networks for increasing the sensitivity of the digital relay protection against turn-to turn short circuits in the stator winding and asymmetric modes in wind power generators. Models have been developed for monitoring two standard and two emergency mode parameters, whose deviation from the set-points is an indication of occurrence of turn-to-turn short circuits and asymmetric modes, or of combinations of these types of failures. An artificial neural network, trained by error back-propagation algorithm has been used. An experiment has been condu

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Ansabekova, Gulbakyt, Yermek Sarsikeyev, Zhubanyshbai Abdimuratov, et al. "Development of intelligent protection and automation control systems using fuzzy logic elements." International Journal of Electrical and Computer Engineering (IJECE) 14, no. 1 (2024): 556. http://dx.doi.org/10.11591/ijece.v14i1.pp556-565.

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In this article, the causes of technological disturbances in electrical systems are considered, and several characteristic disadvantages of the protection and automation of elements of electrical systems are highlighted. The tendency to decrease the reliability of relay protection associated with the transition from analog to digital types of protection is substantiated. Based on the studied examples, the use of fuzzy logic in protections, the expediency of using fuzzy logic elements in protection devices, and the automation of electrical systems to identify types of short circuits are justifi

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48

Ansabekova, Gulbakyt, Yermek Sarsikeyev, Zhubanyshbai Abdimuratov, et al. "Development of intelligent protection and automation control systems using fuzzy logic elements." International Journal of Electrical and Computer Engineering (IJECE) 14, no. 1 (2024): 556–65. https://doi.org/10.11591/ijece.v14i1.pp556-565.

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In this article, the causes of technological disturbances in electrical systems are considered, and several characteristic disadvantages of the protection and automation of elements of electrical systems are highlighted. The tendency to decrease the reliability of relay protection associated with the transition from analog to digital types of protection is substantiated. Based on the studied examples, the use of fuzzy logic in protections, the expediency of using fuzzy logic elements in protection devices, and the automation of electrical systems to identify types of short circuits are justifi

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Korobeynikov, Boris, Andrey Pechenkin, Gennady Zakharov, and Alexander Bogdan. "Mathematical Modeling of a Transformer Device with a Short-Circuited Winding for Converting a Single-Phase Current into a Six-Phase Voltage." Известия высших учебных заведений. Электромеханика 66, no. 2023 (2023): 95–100. http://dx.doi.org/10.17213/0136-3360-2023-1-95-100.

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The article presents a mathematical model of a transformer device with a short-circuited winding, which converts a single-phase input current into a six-phase voltage that can be used in the relay protection of electrical grids. A system of differential equations in the state space is obtained on the basis of the mathematical model of a transformer device with a short-circuited winding; the state space being necessary for modeling and analyzing various steady-state and transient modes of electrical grid operation. Approaches of the state space theory are used to obtain a system of differential

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Ruma, Farhana Ferdous,. "Modeling of Power System Protection Scheme by Distance Relay for Distribution Lines." Journal of Electrical Power & Energy Systems 8, no. 1 (2024): 27–38. http://dx.doi.org/10.26855/jepes.2024.06.005.

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