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Academic literature on the topic '2L-G Double Line to Ground fault'
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Journal articles on the topic "2L-G Double Line to Ground fault"
1
Patil, Harshal Vilas. "Three-Phase Fault Analysis on Transmission Line in Matlab Simulink." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (2021): 5386–91. http://dx.doi.org/10.22214/ijraset.2021.36027.
Full textAbstract:
Now-a-days the demand of electricity or power areincreases day by day this results to transmits more power byIncreasing the transmission line capacity from one place to theother place. But during the transmission some faults areoccurred in the system, such as L-L fault (line to line), 1L-Gfault (single line to ground) and 2L-G fault (double line toground). These faults affect the power system equipmentswhich are connected to it. The main aim of this paper is tostudy or analysis of faults and also identifies the effect of thefault in transmission line along with bus system which isconnected to transmission line. Mainly the major faults in longtransmission lines is (L-G) single line to ground fault which areharmful to the electrical equipment. A proposed model intransmission line is simulated in MATLAB software to analysisand identified the faults. Fault block was taken from the sim-power system block library. The whole modeling andsimulation of different operating and different conditions offault on transmission line, their faults are L-G fault, 2L-Gfault, 3L-G fault and three line short circuit of the proposedwork is presented in this paper.
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Mohamed Sharif, Noor Fadzilah, Khairun Neesya Mohamed Shafiee, Nur Fatin Izzati Tajudin, et al. "A Modelling of 500 Kv Long Transmission Line and Fault Detection Using Inverse Definite Minimum Time Over Current (IDMT O/C) relay." Jurnal Kejuruteraan 37, no. 1 (2025): 477–88. https://doi.org/10.17576/jkukm-2025-37(1)-35.
Full textAbstract:
As electricity demand increases day by day due to economic growth, the process of transmitting efficient electrical power is vital. Thus, a power simulation study is required to determine the mechanism of the transmission line, and possible faults that occurred in the transmission line system. On a daily basis, single line to ground fault (L-G), double line to ground fault (2L-G), and triple line to ground fault (3L-G) are the faults that normally occur in the long transmission line system. In this project, a model of a 300km/500 kV EHV transmission line consisting of a three-phase source, distribution line, and load is simulated using MATLAB software. When the L – G fault is applied, the voltage is diminished to zero and upon fault clearance, the R – G line produced overvoltage and overcurrent by 518.9 kV and 1889 A, which increased about 46.83% and 15.67% compared to normal lines of Y – G and B – G at 353. kV and 1633 A. Then, for the 2L – G fault, again the voltage is reduced to zero and when fault clearance occurred, the R – G and Y – G lines experienced overvoltage and overcurrent at 570.4 kV and 708.5kV, which showed more than 60% transient compared to normal line B-G at 353.4 kV. In Contrast, the 3L – G fault causes all transmission lines to experience overvoltage and overcurrent at different times and can damage the whole transmission system. Thus, to reduce the severe impact of fault, the Inverse Definite Minimum Time Over Current (IDMT O/C) relay protection is installed in the line model.
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Kunal, Patil, Sonawane Rohan, Tarle Ashutosh, and PrathameshWalunj. "Simulation of Transmission Line using MATLAB." Advancement of Signal Processing and its Applications 5, no. 2 (2022): 1–6. https://doi.org/10.5281/zenodo.7187642.
Full textAbstract:
<em>The demand of electricity increases day by day these results to transmit more power by increasing the transmission line capacity from one place to the other place. The main goal is to develop a MATLAB based Simulation model for analyzing 3- phase symmetrical and unsymmetrical faults on power transmission lines. Generally, these faults occur in the long transmission line system such as single line to ground fault (L-G), double line to ground (2L-G), triple line to ground fault (3LG) and Line to line fault (L-L). Fault analysis for different kinds of faults has been done and it impacts are appeared in simulation results such as current and voltage. This results into the MATLAB software in which transmission line model is simulated. MATLAB can manipulate and invert large matrices and can be used in many several applications. MATLAB is more convenient with a recent addition called Simulink, a program which is normally used in the analysis of modern control systems. Simulink, now incorporated into MATLAB, can also be used to design distributed transmission lines. In addition to demonstrating its wider applicability, many examples are included that are normally described in books or papers directed to the study of faults along transmission lines. As the importance of energy efficiency grows for companies and government regulators, so does the need for theoretical analysis. </em>
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Tekale, Mr Pramod Vilas. "Transmission line Three-Phase Fault Analysis Using Matlab Simulink." International Journal for Research in Applied Science and Engineering Technology 10, no. 7 (2022): 1139–44. http://dx.doi.org/10.22214/ijraset.2022.45420.
Full textAbstract:
Abstract: The Electric Power System has many different sections, transmission system is one of. Where power is transmitted from generating stations and substations via transmission lines into consumers. In the Power System causes of faults are many, they include lighting, wind damage, trees falling across transmission lines, vehicles or aircraft colliding with the transmission towers or poles, birds shorting lines. The fault occurring in power system can be broadly classified into symmetrical and unsymmetrical fault. Generally these faults are occurred in the long transmission line system such as single line - ground fault (L-G), double line - ground (2L-G), triple line - ground fault (3LG) and Line - line fault (L-L). The transmission line fault analysis helps to select and develop a better for protection purpose. This paper ways to deal with the MATLAB programming in which transmission line model is composed and different issues has been reenacted utilizing tool compartment. Fault Analysis for different sorts of faults has been done and it impacts are appeared in simulation output, for example, voltage, current, control alongside the positive, negative and zero grouping segments of voltage and current output as far as waveforms.
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Kunal, Patil, Sonawane Rohan, Tarle Ashutosh, and Walunj Prathamesh. "Simulation of Transmission Line using MATLAB." Advancement of Signal Processing and its Applications 5, no. 2 (2022): 1–6. https://doi.org/10.5281/zenodo.7186430.
Full textAbstract:
<em>The demand of electricity increases day by day these results to transmit more power by increasing the transmission line capacity from one place to the other place. The main goal is to develop a MATLAB based Simulation model for analyzing 3- phase symmetrical and unsymmetrical faults on power transmission lines. Generally, these faults occur in the long transmission line system such as single line to ground fault (L-G), double line to ground (2L-G), triple line to ground fault (3LG) and Line to line fault (L-L). Fault analysis for different kinds of faults has been done and it impacts are appeared in simulation results such as current and voltage. This results into the MATLAB software in which transmission line model is simulated. MATLAB can manipulate and invert large matrices and can be used in many several applications. MATLAB is more convenient with a recent addition called Simulink, a program which is normally used in the analysis of modern control systems. Simulink, now incorporated into MATLAB, can also be used to design distributed transmission lines. In addition to demonstrating its wider applicability, many examples are included that are normally described in books or papers directed to the study of faults along transmission lines. As the importance of energy efficiency grows for companies and government regulators, so does the need for theoretical analysis. </em>
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Enefiok, Okpo, Ekom, Nkan, Imo Edwin, Odion, Joshua, and Jack, Anthony Linus. "Induction Motor Voltage Variation and Fault Adaptation in Submarines." Journal of Engineering Research and Reports 26, no. 12 (2024): 286–304. https://doi.org/10.9734/jerr/2024/v26i121358.
Full textAbstract:
Induction motors are critical components in submarine systems, powering propulsion and auxiliary machinery under challenging operational conditions. These motors, however, are susceptible to faults such as voltage disturbances and mechanical anomalies that can compromise performance and operational safety. This research investigates the fault adaptation mechanisms for induction motors in submarine scenarios by integrating wavelet decomposition for fault detection and undervoltage relays for fault adaptation and mitigation. Wavelet transform analysis is employed to detect transient faults, specifically voltage disturbances occurring between 0.3 and 0.7 seconds. The system identifies fault characteristics in real-time using the high-resolution capabilities of discrete wavelet transforms, allowing precise localization and classification of anomalies. An undervoltage relay, integrated into the system, adapts to the fault condition by tripping the motor at 0.54 seconds to prevent prolonged exposure to damaging voltage dips. The study utilizes MATLAB/Simulink to model and analyze a 7.5 kW, 400 V, 1440 RPM induction motor operating under realistic submarine conditions. For fault identifications, twelve different scenarios are examined: Three phase to ground fault, three phase fault, double line to ground fault (AB-G), double line to ground fault (AC-G), double line to ground fault (BC-G), line to line fault (A-B), line to line fault (A-C), line to line (B-B) fault, single line to ground fault (A-G), single line to ground fault (B-G), single line to ground fault (C-G), and no faults. Also, for fault adaptation using under-voltage relay, two different scenarios are simulated for reference purpose: single line to ground and three phase to ground. Simulation results demonstrate the effectiveness of the wavelet-based detection in identifying faults early and the relay's timely intervention to protect the motor. These findings highlight the viability of integrating wavelet decomposition and adaptive relay mechanisms to enhance the resilience of induction motors in submarines.
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Ekop, Ubong Sebastian, Ekom E. Okpo, Anyanime Tim Umoette, Isemin Stephen Etim, and Orok Ifiok Jackson. "Application of Intelligent Overcurrent Relays for Real-time Protection of Induction Motor under Fault Conditions." Journal of Engineering Research and Reports 27, no. 3 (2025): 489–510. https://doi.org/10.9734/jerr/2025/v27i31447.
Full textAbstract:
Protecting an induction motor from faults is essential to ensure its reliable operation, extend its lifespan, and safeguard the overall electrical system. This paper presents a comprehensive analysis and protection strategy for a 7.5 kW, 400 V, 50 Hz, 1440 RPM, three-phase squirrel-cage induction motor under various fault conditions using MATLAB/Simulink. The faults considered include normal case (without fault), single line-to-ground fault (L-G), double line-to-ground fault (L-L-G), three line-to-ground fault (L-L-L-G), and line-to-line fault (L-L). The simulation runs for a total duration of 2 seconds, with the motor operating under normal conditions from 0 to 0.6 seconds. Faults are applied between 0.6 and 2 seconds, during which an intelligent overcurrent relay is incorporated to detect the fault and trip the motor at 1.4 seconds. The results reveal distinct behaviors of the induction motor during normal and fault conditions, characterized by variations in rotor speed, electromagnetic torque, and stator currents. Under normal operation, the motor operates at steady-state conditions with balanced stator currents, constant torque, and rotor speed close to the synchronous value. However, during fault conditions, significant disruptions are observed. Single line-to-ground faults cause moderate unbalances, while double line-to-ground faults and line-to-line faults induce higher levels of stator current surges and torque oscillations. Three line-to-ground faults present the most severe case, leading to rapid torque drops, rotor deceleration, and excessive current surges in all phases. The intelligent overcurrent relay demonstrates its effectiveness by detecting abnormal current levels across all fault scenarios and successfully isolating the motor at 1.4 seconds, mitigating potential damage. This study highlights the critical role of intelligent protection devices in enhancing the reliability and operational safety of induction motors under fault conditions. The MATLAB/Simulink simulation software proves to be an effective tool for modeling, analyzing, and validating the performance of the motor and protection system. This work provides valuable insights into fault dynamics in three-phase induction motors and underscores the importance of implementing intelligent relay-based protection schemes for improved fault mitigation and motor reliability.
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Jadhav, Swati, Sonali Bansode, Chanchal Thore, and Prof Mrunali Makwana. "Fault Detection in Transmission Line." International Journal for Research in Applied Science and Engineering Technology 12, no. 10 (2024): 592–95. http://dx.doi.org/10.22214/ijraset.2024.64500.
Full textAbstract:
Abstract: This project focuses on the design and implementation of an advanced fault detection system for overhead transmission lines, utilizing key components such as the ESP 8266 microcontroller, current sensors, a GPS module, and IoT integration. The system is capable of detecting and classifying four major fault types: single line to ground (L-G), line to line (LL), double line to ground (L-L-G), and three-phase faults (L-L-LG). By placing current sensors at the transmission line's sending end, the system identifies faults and accurately determines their location through GPS coordinates .Simulations using protect us software were conducted to verify the system’s performance prior to building a hardware prototype. Upon fault detection, the system provides alerts via an LCD display and a buzzer, while real-time fault data is transmitted to an Android app and web server through the arduino IoT cloud. Testing confirmed the system’s precision in fault identification and location tracking, ensuring timely notifications for control room and remote device operators. This successful implementation highlights the system's potential for improving safety and efficiency in power transmission networks. the project lays the groundwork for further exploration into advanced fault detection and real-time monitoring solutions in electrical engineering.
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Jadhav, Swati, Sonali Bansode, Chanchal Thore, Prof Pallavi Gajaphode, and Prof Dr B. E. Shinde. "Fault Detection in Transmission Line." International Journal for Research in Applied Science and Engineering Technology 13, no. 4 (2025): 2758–62. https://doi.org/10.22214/ijraset.2025.68822.
Full textAbstract:
Abstract: This project focuses on the design and implementation of an advanced fault detection system for overhead transmission lines, utilizing key components such as the ESP 8266 microcontroller, current sensors, a GPS module, and IoT integration. The system is capable of detecting and classifying four major fault types: single line to ground (L-G), line to line (LL), double line to ground (L-L-G), and three-phase faults (L-L-LG). By placing current sensors at the transmission line's sending end, the system identifies faults and accurately determines their location through GPS coordinates. Simulations using protect us software were conducted to verify the system’s performance prior to building a hardware prototype. Upon fault detection, the system provides alerts via an LCD display and a buzzer, while real-time fault data is transmitted to an Android app and web server through the arduino IoT cloud. Testing confirmed the system’s precision in fault identification and location tracking, ensuring timely notifications for control room and remote device operators. This successful implementation highlights the system's potential for improving safety and efficiency in power transmission networks. the project lays the groundwork for further exploration into advanced fault detection and real-time monitoring solutions in electrical engineering.
10
Obi, P. I., E. A. Amako, and C. S. Ezeonye. "High impedance fault arc analysis on 11 kV distribution networks." Nigerian Journal of Technological Development 19, no. 2 (2022): 143–49. http://dx.doi.org/10.4314/njtd.v19i2.6.
Full textAbstract:
This paper presents a study of high impedance fault (HIF) arc analysis on 6 km 11 kV distribution network from New Haven to New NNPC, Enugu State. These HIF currents have low fault current ratings and are not readily detected by the distribution sub-station relays and protective equipment. This was realized with the aid of MATLAB. Firstly, the HIF was modelled based on the electric arc theory method for single line-to-ground and double line-to-ground faults, when the 11 kV New-haven to New NNPC Enugu distribution line interfaces with a dry asphalt ground surface. The HIF was incident on the midpoint of the distribution line between the switching times of the circuit breaker from 0.02 to 0.05 seconds. The results showed that for single line-to-ground and double line-to-ground faults, a peak current magnitude of 12.4 A and 2280 A were seen respectively and initial spikes due to arcing in the system voltages at the initial switching times of 0.02 seconds. The corresponding residual currents Ib and Ic are very small with a peak spike of 0.3 A and 1.9 A for double line-to-ground fault (BC-G). These spikes are because of the impact of the initial transients caused by the arc flames as its quenches and re-ignites.