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Journal articles on the topic 'Electrical leakage'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Hu, Zhouhan, Yaxun Wang, Maosheng Ye, Mei Liu, and Junqi Ding. "Localization of Potential Leakage Areas inside Plain Reservoirs Using Waterborne Electrical Resistivity Tomography." Journal of Environmental and Engineering Geophysics 26, no. 2 (2021): 133–43. http://dx.doi.org/10.32389/jeeg20-070.

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Leakage of reservoirs will not only lead to the waste of water resources, but also cause soil salinization, dam break, and other serious consequences. Leakages may still occur even anti-seepage engineering measures are taken. This study utilized continuous waterborne electrical resistivity tomography to localize potential bottom geomembrane leakage areas in Datun plain reservoir in the east route of South-to-North Water Diversion project. The integrated sensitivity was firstly evaluated to select the optimum electrode array. Four leakage scenarios were numerically simulated and the resulting r

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2

Fu, Yakun. "Electrical Line Fault Detection and Line Cut-Off Equipment and Control." Journal of Control Science and Engineering 2022 (July 7, 2022): 1–6. http://dx.doi.org/10.1155/2022/3857938.

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In order to locate the leakage fault location of low-voltage electrical lines, cut off the power supply of electrical lines, and ensure the safety and reliability of the power supply network, this paper proposes an electrical line leakage fault detection system based on a signal trigger. Based on the research on the current leakage protection system of low-voltage electrical lines, the author puts forward that the leakage current of the selected test analog trigger signal is not less than twice the maximum value of the normal leakage current of electrical lines and equipment with STC15F2K60S2

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3

Ludwig, Thomas, Rainer Ossig, Susanne Graessel, Marianne Wilhelmi, Hans Oberleithner, and Stefan W. Schneider. "The electrical resistance breakdown assay determines the role of proteinases in tumor cell invasion." American Journal of Physiology-Renal Physiology 283, no. 2 (2002): F319—F327. http://dx.doi.org/10.1152/ajprenal.00327.2001.

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The electrical resistance breakdown of the Madin-Darby canine kidney (MDCK) cell monolayer provides a continuous assay system for cancer invasion that detects functional changes before morphological alterations. In this study, we address the question of whether physical contact between tumor cell and epithelial monolayer is a prerequisite for tumor cell invasion. When human melanoma cells were seeded directly (i.e., physical contact) on top of an electrically tight epithelial cell layer (5,800 ± 106 Ω · cm2), electrical monolayer leakage led to an 18 ± 3% reduction of transepithelial electrica

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4

Driessen, Carla, and Michael Raupach. "Investigations on the detectability of water intruding into bridge deck sealings by electrical resistivity measurements." MATEC Web of Conferences 199 (2018): 06005. http://dx.doi.org/10.1051/matecconf/201819906005.

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In the context of a current joint research project a monitoring system to detect leakages in bridges is implemented by using a textile reinforced concrete interlayer which consists of two carbon meshes with a spacing of 15 mm and a new developed mortar. Between the two carbon meshes the resistivity is measured with alternating current. If a leakage in the bridge deck sealing occurs and water gets into the interlayer a drop in the measured resistivity occurs and the leakage is detected. In this case repair measures can be carried out in an early stage or a preventive cathodic protection can be

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5

Aukhadeev, A. E. "Optimizing Current Leakage Protection Settings to Improve Electrical Safety in Mines." Occupational Safety in Industry, no. 6 (June 2025): 85–90. https://doi.org/10.24000/0409-2961-2025-6-85-90.

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The study is dedicated to addressing the urgent problem of ensuring electrical safety in mines, where high humidity, dust content, and limited space pose specific risks of electric shock. The goal of the study has been to develop recommendations on selecting earth leakage protection settings, considering the actual state of the insulation of underground electrical grids and ensuring minimum electrical safety of personnel. Within the frameworks of the study, a comprehensive analysis of the state of insulation of cable lines, leakage currents, and the efficiency of the existing protection device

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6

Ju, Zhe, and Hongkui Zhang. "Research on Leakage Protection Test Technology of Coal Mine Explosion-Proof Electric Appliances." Highlights in Science, Engineering and Technology 124 (February 18, 2025): 436–39. https://doi.org/10.54097/g8qtka76.

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Leakage protection is an important project for the type testing and factory inspection of explosion-proof electrical equipment in coal mines, serving as a crucial indicator for assessing product safety. Based on an analysis of the current state of leakage protection testing technology for coal mine explosion-proof electrical equipment, a leakage protection testing system has been designed. This system details the processes for leakage lock testing and leakage unlock testing, providing a reference for the development of intelligent testing technology for coal mine explosion-proof electrical equ

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7

Livenson, A. R. "Leakage currents in medical electrical devices." Biomedical Engineering 26, no. 3 (1992): 113–20. http://dx.doi.org/10.1007/bf01674354.

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8

Charoenchaiprakit, Kanok, Wekin Piyarat, and Kampol Woradit. "Alternating and Direct Electrical Leakage Sensor." International Review of Electrical Engineering (IREE) 18, no. 4 (2023): 320. http://dx.doi.org/10.15866/iree.v18i4.23390.

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9

Huang, Hongwei, Wen Cheng, Mingliang Zhou, Jiayao Chen, and Shuai Zhao. "Towards Automated 3D Inspection of Water Leakages in Shield Tunnel Linings Using Mobile Laser Scanning Data." Sensors 20, no. 22 (2020): 6669. http://dx.doi.org/10.3390/s20226669.

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On-site manual inspection of metro tunnel leakages has been faced with the problems of low efficiency and poor accuracy. An automated, high-precision, and robust water leakage inspection method is vital to improve the manual approach. Existing approaches cannot provide the leakage location due to the lack of spatial information. Therefore, an integrated deep learning method of water leakage inspection using tunnel lining point cloud data from mobile laser scanning is presented in this paper. It is composed of three parts as follows: (1) establishment of the water leakage dataset using the acqu

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10

GOVINDAIAH, R., T. BALAJI, ARBIND KUMAR, et al. "DIELECTRIC FORMATION AND ELECTRICAL CHARACTERIZATION OF SINTERED TANTALUM SLUGS." Modern Physics Letters B 21, no. 02n03 (2007): 123–28. http://dx.doi.org/10.1142/s0217984907009287.

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The present electronic industry requires capacitors having high capacitance with lower volume and space, high reliability and low leakage current. The solid tantalum capacitor ideally meets such requirements. In the present paper, the electrical characterization of tantalum anodes prepared from sodium reduced tantalum powder has been described. The capacitance, DC leakage current are measured for tantalum anodes made with different particle sizes of powders using the LCR Meter and DC Leakage Tester and compared with the physical and chemical properties. Interestingly, it was found that the DC

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11

Oh, Teresa. "Electrical Properties of Nanoscale ZnS Thin Film Transistor." Journal of Nanomaterials 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/956101.

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To understand the contact mechanism from electrical properties of the ZnS TFTs, ZnS was fabricated on SiOC as a gate insulator on a Si substrate. Ohmic contact without a potential barrier increased the leakage current, but Schottky contact decreased the leakage current because of a Schottky barrier (SB). The ZnS TFTs prepared on SiOC with a Schottky contact improved the stability with respect to the reduction of drain voltages. The structural matching between ZnS and SiOC increased the height of SB such as ZnS annealed at 200°C, which made ZnS become an amorphous structure. ZnS/SiOC films with

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12

Topolsky, N. G., E. N. Mineev, G. N. Malashenkov, M. Sh Mintcaev, and D. S. Beresnev. "The use of differential leakage current transformers in an automated fire prevention system in the power grid of industrial facilities." Technology of technosphere safety 94 (2021): 20–33. http://dx.doi.org/10.25257/tts.2021.4.94.20-33.

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Introduction. The occurrence of severe consequences of accidents in the electrical networks of industrial facilities depends on how correctly the automated systems for protection, detection and extinguishing of fire are selected. One of the reasons for the occurrence of a fire hazardous situation in electrical networks is the violation of the insulation and sheath of the electrical cable due to its aging or mechanical damage. Timely detection of the pre-fire state of electrical equipment is ensured by using an automated control system for electrical equipment using a differential leakage curre

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13

Nakano, Makito, Akira Saito, and Nobuyuki Wada. "Changes in the Electrical Conduction Mechanism with the Electrical Degradation of BaTiO₃-Based Ceramics." Key Engineering Materials 388 (September 2008): 201–4. http://dx.doi.org/10.4028/www.scientific.net/kem.388.201.

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The electrical degradation mechanisms of BaTiO3-based ceramics were investigated by measuring the dependence of leakage current on high electric fields. Before the degradation, the leakage current predominately obeyed Ohm’s law and Poole-Frenkel relation. As the degradation progressed, the Poole-Frenkel emission current increased. Moreover, the total current at the high electric fields also comprised Schottky emissions between cathodes and dielectric layers.

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14

Momoi, Y., H. Iwase, Y. Nakano, A. Kohno, A. Asanuma, and K. Yanagisawa. "Gradual Increases in Marginal Leakage of Resin Composite Restorations with Thermal Stress." Journal of Dental Research 69, no. 10 (1990): 1659–63. http://dx.doi.org/10.1177/00220345900690100601.

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The effects of thermal stress on the marginal leakage of resin composite restorations in bovine teeth were investigated by a method that preserved the specimens. The changes in marginal leakage of specimens with increasing numbers of thermal cycles were measured by an electrical conductivity method. Four brands of posterior resin composites were used to fill cylindrical cavities (2.0 mm in diameter and 1.5 mm in depth) on the labial surfaces of bovine incisors, according to the manufacturer's instructions. Thermal cycling stress was applied to the specimens for up to about seven weeks (9000 cy

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15

B. M Shariff, M. Riduan, M. F. L. Abdullah, M. Yusop B. A Latiff, Ahmad B. Mohamad, and Iszaizul B. Ismail. "Detecting leakage current by infrared thermography method." Indonesian Journal of Electrical Engineering and Computer Science 16, no. 1 (2019): 200. http://dx.doi.org/10.11591/ijeecs.v16.i1.pp200-207.

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<span>An alternating current leakage can happen in electrical installation such as switchgear panel. If it’s not being detected earlier and address properly, it might lead to unintended incident or accident such as fire, electric shock, and power supply trip. Occasionally, if it appears, tracing its root cause can be difficult. The conventional method is by isolating one by one of the electrical loads with aids of multimeter and clamp meter. <span class="apple-converted-space"> </span>Unfortunately, this conventional method could be a tedious job for installations involved in

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16

Abdullah, F. S., M. A. M. Piah, N. A. Othman, and A. Din. "Prediction of surface leakage current of overhead insulators under environmental and electrical stresses." Bulletin of Electrical Engineering and Informatics 9, no. 5 (2020): 1747–54. http://dx.doi.org/10.11591/eei.v9i5.2182.

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Leakage current is one of the critical aspects to consider for overhead transmission line insulator’s condition and performance assessment. As the leakage current increase, the size of the dry band also will increase leads to the dry band arcing, deteriorate the insulator performance and contribute to the development of insulator flashover. Based on the literature study, other than the existence of contaminations on the surface of insulator combined with moisture, the variation in leakage current is also affected by the environmental and electrical stresses. Previous researches have shown the

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17

F., S. Abdullah. "Prediction of surface leakage current of overhead insulators under environmental and electrical stresses." Bulletin of Electrical Engineering and Informatics 9, no. 5 (2020): 1747–54. https://doi.org/10.11591/eei.v9i5.2182.

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Leakage current is one of the critical aspects to consider for overhead transmission line insulator’s condition and performance assessment. As the leakage current increase, the size of the dry band also will increase leads to the dry band arcing, deteriorate the insulator performance and contribute to the development of insulator flashover. Based on the literature study, other than the existence of contaminations on the surface of insulator combined with moisture, the variation in leakage current is also affected by the environmental and electrical stresses. Previous researches have show

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18

Wu, Shuya, Jiliang Yin, Chao Zhang, et al. "Electrical Performance Analysis of Grading Electrodes After Scaling in Converter Valves." Journal of Physics: Conference Series 2503, no. 1 (2023): 012063. http://dx.doi.org/10.1088/1742-6596/2503/1/012063.

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Abstract It is necessary to take out the electrode when detecting the scaling degree of the conventional grading electrode. The steps are cumbersome and there are safety risks. In this paper, through the analysis of the equivalent circuit model before and after the scaling of the grading electrode on the cooling water manifold in the converter valve, the loop resistance model suitable for the positive and negative potential sides is obtained. The constant voltage DC source is used as the driving voltage of the circuit, and the leakage current of the circuit is measured under different temperat

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19

Zhou, Yinzi. "Methods to Improve Suppression of Leakage Current Generation in Single-phase Non-isolated Photovoltaic Grid-connected Inverters." Highlights in Science, Engineering and Technology 87 (March 26, 2024): 192–98. http://dx.doi.org/10.54097/mhhy1m82.

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Analysis of methods to suppress leakage current through the topology of a single-phase inverter is carried out, aiming to address the phenomenon that disturbs the normal operation of electrical equipment and poses risks to human life when equipment integrates the electrical system into the grid. The topology of a single-phase inverter is taken as the research object, whose issues will be researched and summarized. First of all, by analyzing the single-phase inverter circuit, a simplified equivalent circuit is obtained. Then during the simplification process, it can be concluded that the genera

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20

Okino, Hiroyuki, Norifumi Kameshiro, Kumiko Konishi, et al. "Electrical Characteristics of Large Chip-Size 3.3 kV SiC-JBS Diodes." Materials Science Forum 740-742 (January 2013): 881–86. http://dx.doi.org/10.4028/www.scientific.net/msf.740-742.881.

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The reduction of reverse leakage currents was attempted to fabricate 4H-SiC diodes with large current capacity for high voltage applications. Firstly diodes with Schottky metal of titanium (Ti) with active areas of 2.6 mm2 were fabricated to investigate the mechanisms of reverse leakage currents. The reverse current of a Ti Schottky barrier diode (SBD) is well explained by the tunneling current through the Schottky barrier. Then, the effects of Schottky barrier height and electric field on the reverse currents were investigated. The high Schottky barrier metal of nickel (Ni) effectively reduce

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21

Wang, Yan Wen, and Yin Sheng Wang. "The Research of New Selective Leakage Protection Device Based on Additional DC and Zero-Sequence Power." Applied Mechanics and Materials 457-458 (October 2013): 1185–88. http://dx.doi.org/10.4028/www.scientific.net/amm.457-458.1185.

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By theoretical analysis and computer simulation,this paper has successfully solved the compatibility problembetween the Leakage protection with additional DCand zero-sequence power direction Leakage protection, and realized the goal of the two different ways of leakage protection sharingone set of electrical leakage protection system.This paper focuses on the basic components of "EDS-336/660 centralized-distributed selective leakage protection system"and its practical usage in Lvjiatuo Coal Mine.

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22

Wu, Hanfu, Xiujun Guo, Jingxin Wu, and Yufeng Zhang. "In-situ marine gas hydrate production methane leaks electrical monitoring system." E3S Web of Conferences 267 (2021): 02041. http://dx.doi.org/10.1051/e3sconf/202126702041.

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In the process of gas hydrate exploitation, methane leakage needs to be monitored in real time, so an in-situ electrical monitoring system for methane leakage is designed. The monitoring system is mainly composed of monitoring cable, acquisition station, power module and general control platform. According to the electrical principle, the system carries out regional monitoring on the seabed formation, forms the resistivity map, and realizes methane leakage monitoring. The cost of the monitoring system is low, and it can be remotely controlled or automatically collected data according to the pr

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23

Acar, Emrah, Anirudh Devgan, and Sani R. Nassif. "Leakage and Leakage Sensitivity Computation for Combinational Circuits." Journal of Low Power Electronics 1, no. 2 (2005): 172–81. http://dx.doi.org/10.1166/jolpe.2005.026.

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24

Cheng, Tsung-Hui, Chien-Hao Chen, Chien-Hung Lin, Bor-Horng Sheu, Chia-Hung Lin, and Wen-Ping Chen. "Leakage Current Detector and Warning System Integrated with Electric Meter." Electronics 12, no. 9 (2023): 2123. http://dx.doi.org/10.3390/electronics12092123.

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Electrical power is essential in human life. Thus, the security and reliability of its supply are of critical importance in a country’s industrial and economic development. The leakage and improper use of electricity may cause serious problems such as fire and electrocution. To prevent such incidents and minimize the loss of life and property, a leakage current detector and warning system are developed in this study. With a high-precision current transformer and high-gain linear converter, the detector effectively detects leakage current over 1 mA, which is validated in different methods. The

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25

Abdullah, Yusof, Anati Syahirah Hedzir, Nurul Fadzlin Hasbullah, Norasmahan Muridan, Cik Rohaida Che Hak, and Sarimah Mahat. "Radiation Damage Study of Electrical Properties in GaN LEDs Diode after Electron Irradiation." Materials Science Forum 888 (March 2017): 348–52. http://dx.doi.org/10.4028/www.scientific.net/msf.888.348.

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Nitride-based light emitting diodes (LEDs) is an attractive material due to its high temperature tolerance and suitable to be used in extreme environment. The irradiation process of Gallium Nitride (GaN) diode was carried out by electron irradiation with 1000 kGy and 1500 kGy doses with a conveyor speed of 50 kGy per pass. Capacitance-voltage (C-V) and current-voltage (I-V) characterization for both pre and post irradiation samples was done. Both current and capacitance show decreasing while reverse leakage current increased after irradiation. The reverse leakage current revealed that the curr

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26

Nhu, Do Y., Nguyen Truong Giang, Ngo Xuan Cuong, Nguyen Thac Khanh, and Le Anh Tuan. "Impact of power electronics devices on leakage current in mine electrical systems: a case study in Vietnam." Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 1 (February 28, 2025): 55–62. https://doi.org/10.33271/nvngu/2025-1/055.

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Purpose. To determine the impact of power electronic devices on leakage current in underground mine AC power network. The research results allow choosing appropriate leakage protection method to improve electrical safety in underground mining. Methodology. This study uses analytical methods and modeling methods on Matlab/Simulink software to determine, analyze, and evaluate the working current and leakage current in the mine power network containing power electronic devices. Findings. A mine power network model containing inverter and electric motor was built by analytical method and simulated

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27

Guan Shaopeng, and Wang Yuling. "An Advanced Model for Electrical Landfill Leakage Detection." Journal of Convergence Information Technology 6, no. 7 (2011): 281–87. http://dx.doi.org/10.4156/jcit.vol6.issue7.35.

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28

Polunin, V. A. "Modeling SiO2 leakage currents caused by electrical overloads." Russian Microelectronics 46, no. 5 (2017): 359–64. http://dx.doi.org/10.1134/s1063739717050080.

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29

Loke, A. L. S., J. T. Wetzel, J. J. Stankus, M. S. Angyal, B. K. Mowry, and S. S. Wong. "Electrical leakage at low-K polyimide/TEOS interface." IEEE Electron Device Letters 19, no. 6 (1998): 177–79. http://dx.doi.org/10.1109/55.678535.

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30

Shaifudin, Muhamad Syaizwadi, Mohd Sabri Mohd Ghazali, Wan Mohamad Ikhmal Wan Mohamad Kamaruzzaman, et al. "Synergistic Effects of Pr6O11 and Co3O4 on Electrical and Microstructure Features of ZnO-BaTiO3 Varistor Ceramics." Materials 14, no. 4 (2021): 702. http://dx.doi.org/10.3390/ma14040702.

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This paper investigated the effects of Pr6O11 and Co3O4 on the electrical properties of ZnO-BaTiO3 varistor ceramics. The Pr6O11 doping has a notable influence on the characteristics of the nonlinear coefficient, varistor voltage, and leakage current where the values varied from 2.29 to 2.69, 12.36 to 68.36 V/mm and 599.33 to 548.16 µA/cm2, respectively. The nonlinear varistor coefficient of 5.50 to 7.15 and the varistor voltage of 7.38 to 8.10 V/mm was also influenced by the use of Co3O4 as a dopant. When the amount of Co3O4 was above 0.5 wt.%, the leakage current increased from 202.41 to 302

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31

Setiawan, Riko. "PERANCANGAN ALAT PERAGA RCBO SEBAGAI PROTEKSI INSTALASI RUMAH TANGGA." Jurnal Qua Teknika 15, no. 01 (2025): 1–13. https://doi.org/10.35457/quateknika.v15i01.4359.

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Non-standard electrical installations often cause fires due to short circuits. RCBO (Residual Current Circuit Breaker with Overcurrent Protection) is known to enhance electrical installation protection. People often neglect the dangers of non-standard electrical installations. This study designs a demonstration tool for an electrical protection system. The demonstration tool is intended to show that using non-standard electrical devices is hazardous. It effectively demonstrates the effectiveness of RCBO in protecting against abnormal conditions. The design includes testing MCB (Miniature Circu

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32

Stahlbush, Robert E., Qing Chun Jon Zhang, Anant K. Agarwal, and Nadeemullah A. Mahadik. "Effect of Stacking Faults Originating from Half Loop Arrays on Electrical Behavior of 10 kV 4H-SiC PiN Diodes." Materials Science Forum 717-720 (May 2012): 387–90. http://dx.doi.org/10.4028/www.scientific.net/msf.717-720.387.

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The effects of Shockley stacking faults (SSFs) that originate from half loop arrays (HLAs) on the forward voltage and reverse leakage were measured in 10 kV 4H-SiC PiN diodes. The presence of HLAs and basal plane dislocations in each diode in a wafer was determined by ultraviolet photoluminescence imaging of the wafer before device fabrication. The SSFs were expanded by electrical stressing under forward bias of 30 A/cm2, and contracted by annealing at 550 °C. The electrical stress increased both the forward voltage and reverse leakage. Annealing returned the forward voltage and reverse leakag

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Lin, Der-Yuh, Hone-Zern Chen, Ming-Cheng Kao, and Pei-Li Zhang. "Ferroelectric and Electrical Properties Optimization of Mg-doped BiFeO3 Flexible Multiferroic Films." Symmetry 12, no. 7 (2020): 1173. http://dx.doi.org/10.3390/sym12071173.

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Bi1-xMgxFeO3 (BMFO, x = 0, 0.02, 0.04, 0.06 and 0.08) multiferroic films were directly synthesized on flexible stainless steel (FSS), save the bottom electrode process, by means of sol–gel spin-coating technology. The effects of different bending conditions on ferroelectric, dielectric and leakage-current properties of BMFO films were investigated. The leakage-current densities of BiFeO3 (BFO, x = 0) and BMFO (x = 0.06) films were 5.86 × 10−4 and 3.73 × 10−7 A/cm2, which shows that the BMFO (x = 0.06) has more than three orders of magnitude lower than that of BFO film. The residual polarizatio

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Zixing, Shen, Shen Quntai, Li Sheng, and Liu Xuelin. "Study on the Technology of Leakage Protection." Open Electrical & Electronic Engineering Journal 8, no. 1 (2014): 412–18. http://dx.doi.org/10.2174/1874129001408010412.

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Failure leakage of equipment or electric shock may make the residual current amplitude decrease, which causes effective protection of the fault and the existence of dead zone of operation. This paper presents the principle of residual current leakage protection based on vector, using residual current amplitude and residual current variation of fault leakage protection, the realization of mutation leakage, continuous slow change leakage detection and recognition, triangle formulas residual current variation calculation method, orthogonal decomposition calculation method and three-phase equivale

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Qian, Jiang Shan, Zhong Ran Zhou, Yu Wang, Tong Guang Shao, and Jin Bo Zhang. "Research and Design for Three-Axis Electromagnetic Leakage Detector." Applied Mechanics and Materials 241-244 (December 2012): 223–26. http://dx.doi.org/10.4028/www.scientific.net/amm.241-244.223.

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In order to measure the magnetic field around electronic products, household appliances and industrial electrical equipment, this paper puts forward a new method which makes use of electromagnetic coupling design based on three-axis electromagnetic leakage. This method can overcome the disadvantage of traditional single-axis measurement which needs to get the total magnetic field after several times’ measurement. This paper designs three-axis electromagnetic leakage detector for circuit measurement, which is proved to be correct after circuit measurement experiment. It can easily detect 30-2K

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Kim, Dong-Woo, Young-Bea Lim, Sang-Ick Lee, Jae-Hyun Kim, and Dae-Chul Kang. "Prevention Techniques of Electrical Fire and Electrical Shock Caused by Leakage Current." Journal of the Korean Institute of Illuminating and Electrical Installation Engineers 27, no. 6 (2013): 82–87. http://dx.doi.org/10.5207/jieie.2013.27.6.082.

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Nguyen, Khanh Thac, Linh Ngoc Kim, Sy Tien Nguyen, and Giang Truong Nguyen. "Research, design, manufacture leakage current protection device for 660V/1140V underground mine electrical networks." Journal of Mining and Earth Sciences 61, no. 5 (2020): 96–103. http://dx.doi.org/10.46326/jmes.2020.61(5).11.

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This paper presents the results of researching, designing and manufacturing leakage current protection device for 660 V/1140 V ungrounded three-phase electrical networks. The outstanding features of the device are: ability to create wide deformation characteristic; automatically detect and grounded the leakage phase. Device test results show that relay operation time for symmetrical and asymmetric leak resistors are 30 kΩ/60 kΩ per phase and 20 kΩ /50 kΩ for 660 V/1.140 V networks respectively. The total operating time of the device when single phase leaking through a 1 kΩ resistor not excee

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38

Watanabe, Takayuki, Ai Fukumori, Yuji Akiyamna, Yuuki Sato, and Shinzo Yoshikado. "Effect of Simultaneous Addition of Zr and Y on Electrical Characteristics of ZnO Varistors." Key Engineering Materials 485 (July 2011): 257–60. http://dx.doi.org/10.4028/www.scientific.net/kem.485.257.

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The effect of simultaneously adding Zr and Y to Bi–Mn–Co–Sb–Si–Cr–Ni-added ZnO varistors (having the same composition as a commercial varistor) on the varistor voltage, leakage current, and resistance to electrical degradation were investigated. Varistor voltage increased with increasing amount of Y for addition of 0–2 mol % Zr. On the other hand, the nonlinear coefficient α prior to electrical degradation changed very little on the addition of both Y and Zr. With the addition of approximately 1 mol% Zr, the leakage current decreased with increasing amount of Y added. A ZnO varistor with a var

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Martins, François S., Bernardo P. Alvarenga, and Geyverson T. Paula. "Electrical Machine Winding Performance Optimization by Multi-Objective Particle Swarm Algorithm." Energies 17, no. 10 (2024): 2286. http://dx.doi.org/10.3390/en17102286.

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The present work aims to optimize the magnetomotive force and the end-winding leakage inductance from a discrete distribution of conductors in electrical machines through multi-objective particle swarm heuristics. From the development of an application capable of generating the conductor distribution for different machine configurations (single or poly-phase, single or double layer, integral or fractional slots, full or shortened pitch, with the presence of empty slots, etc.) the curves of magnetomotive force and the end-winding leakage inductance associated with the winding are computed. Taki

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Thanh, Le Xuan, and Ho Viet Bun. "Analyzing and identifying the limits of 660V grid parameters to ensure electrical safety in underground coal mines." Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 6 (2021): 101–6. http://dx.doi.org/10.33271/nvngu/2021-6/101.

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Purpose. To study the relation between leakage current and time, then to identify some limits of grid parameters to ensure electrical safety as well as explosion safety corresponding to all operating modes of leakage relay in Vietnam underground mines. Methodology. In underground coal mines of Vietnam, 660 V grids are characterized by ungrounded neutral point electric system. They require very serious and strict operation conditions including electrical safety and explosion safety. In daily operation, the earth leakage currents (earth fault currents) must be lower than the allowance limit. How

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Wang, Yangyang, Zhaoyang Li, Zhibiao Ma, et al. "Phase Structure and Electrical Properties of Sm-Doped BiFe0.98Mn0.02O3 Thin Films." Nanomaterials 12, no. 1 (2021): 108. http://dx.doi.org/10.3390/nano12010108.

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Bi1−xSmxFe0.98Mn0.02O3 (x = 0, 0.02, 0.04, 0.06; named BSFMx) (BSFM) films were prepared by the sol-gel method on indium tin oxide (ITO)/glass substrate. The effects of different Sm content on the crystal structure, phase composition, oxygen vacancy content, ferroelectric property, dielectric property, leakage property, leakage mechanism, and aging property of the BSFM films were systematically analyzed. X-ray diffraction (XRD) and Raman spectral analyses revealed that the sample had both R3c and Pnma phases. Through additional XRD fitting of the films, the content of the two phases of the sam

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Xu, Song, Hai Feng Wang, and Guo Biao Gu. "An Analytical Model for Leakage Effect in the Electrical Generator of Rim-Driven Marine Current Power System." Advanced Materials Research 860-863 (December 2013): 2244–51. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.2244.

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This paper presents an equivalent magnetic circuit model to predict the leakage effect, especially the end leakage effect, of surface-mounted permanent magnet synchronous machine (SPMSM) in rim-driven marine current power (RMCP) system. The end leakage effect is usually neglected in most conventional permanent magnet (PM) machines. However, it is significant in the electrical generator of RPCM due to the short axial length. The idealized path and analytical expressions of end leakage permeance are given in this paper. Finite Element Method (FEM) 3D/2D and experimental values are presented to v

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Li, Jingxiang, Hao Lai, Haitao Yin, and Xiaopeng Xia. "Design of Light Emitting Diode-Based Fiber Optic Current Sensor and Its Application in Pollution Flash Prevention in Digitalized Substations." Journal of Nanoelectronics and Optoelectronics 18, no. 9 (2023): 1106–14. http://dx.doi.org/10.1166/jno.2023.3497.

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Prevention of pollution flash in electrical equipment in digitalized substations and transmission lines has always been a crucial part of power operation. In order to prevent pollution flash, it is essential to detect the contamination of electrical equipment. The measurement of leakage current is a fundamental aspect of preventive pollution flash work in electrical equipment. Applying fiber optic current sensors to online monitoring systems in the power system offers advantages such as resistance to harsh environments, immunity to electromagnetic interference, and resistance to chemical corro

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Marenich, K. N., and А. I. Denisova. "Analysis of factors limiting the efficiency of human protection against electric shocks in the power supply network of the mine site." Mining Industry Journal (Gornay Promishlennost), no. 4/2023 (August 25, 2023): 54–58. http://dx.doi.org/10.30686/1609-9192-2023-4-54-58.

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The relevance of enhancing the protection of mine personnel from electric shocks is associated with a high probability of human contact with a live phase conductor during the operation of power electrical equipment in presence of complex electrical equipment being part of the mine site. The authors have identified the following factors that limit the efficiency of the earth leakage protection means in relation to the their possible operation as part of the mine electric network used to supply power to high-capacity equipment: 1 – capacitance currents in the shunt conductances and leakage circu

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Zhang, Cheng Hua, Ming Shuang Li, Dong Xu, Yong Fang Chen, Yuan Ling Liu, and Ke Zhang. "Microstructure and Electrical Properties of ZnO–Bi₂O₃-Based Varistor Ceramics by Different High-Energy Ball Milling Time." Advanced Materials Research 490-495 (March 2012): 3391–95. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.3391.

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The microstructure and electrical properties of ZnO-Bi2O3-based varistor ceramics prepared by the high-energy ball milling were studied. The varistor ceramics samples were characterized by XRD and SEM analysis, as well as by dc electrical measurements, such as the nonlinearity coefficients, leakage current and threshold voltage. The best electrical characteristics were found in sample by the high-energy ball milling 1 h and sintered at 1000 °C for 2 h, which exhibited the threshold voltage was 457 V/mm, the nonlinear coefficient was 59.3 and the leakage current was 1.18 μA.

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Li, Li, and Qi Bin Liu. "Effect of Technological Parameters on the Microstructure and Electrical Properties of ZnO Varistors." Advanced Materials Research 820 (September 2013): 208–11. http://dx.doi.org/10.4028/www.scientific.net/amr.820.208.

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To improve voltage-gradient and to reduce the sintering temperature of ZnO varistors, high voltage-gradient ZnO varistors were synthesized with a conventional solid state reaction route. By means of SEM and DC parameter instrument for varistor, the influence of different technological parameters on microstructure, voltage-gradient and leakage current of ZnO varistors was investigated. The experimental results show that by using the process that presintering the additives at 850°C, the density is improved, the voltage-gradient is increased, and the leakage current is decreased. The optimum volt

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Li, Chun Lan, Song Huai Du, Zhai Shi, and Juan Su. "Study on Detection Method of Electrical Shock Current Based on Sliding Window and Wavelet Transform." Advanced Materials Research 860-863 (December 2013): 2035–39. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.2035.

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With the popularization of the rural electricity utilization, the rural electric safety was still an immediate problem to be solved. It was difficult to exactly detect and judge electric shock signals in the summation leakage current on the low-voltage electric power grid. A detection method of electrical contact signals based on sliding window and wavelet multi-resolution method was proposed. Under the different signal-to-noise ratio level, the summation leakage current was reconstructed by wavelet decomposition reconstruction algorithm. According to the characteristic of the slow change of t

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Caruso, Massimo, Antonino Oscar Di Tommaso, Fabrizio Marignetti, and Rosario Miceli. "A General Investigation on the Differential Leakage Factor for Symmetrical and Asymmetrical Multiphase Winding Design." Energies 13, no. 20 (2020): 5414. http://dx.doi.org/10.3390/en13205414.

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This work provides an investigation based on a fast estimation of the degree of unbalance (D.U.%) and the differential leakage factor (σ0) of multiphase electrical machine windings. This analysis is carried out by exploring almost 5000 combinations in terms of number of slots, pole pairs, phases and layers. The variability of the leakage factor is examined for each condition, defining an optimal region for its minimization. As a result, an extended mapping is carried out for both the degree of unbalance and the leakage factor, providing a useful tool during the early design stage of winding co

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Trykoz, Liudmyla, Svetlana Kamchatnaya, Dmytro Borodin, Armen Atynian, and Roman Tkachenko. "Protection of railway infrastructure objects against electrical corrosion." Anti-Corrosion Methods and Materials 68, no. 5 (2021): 380–84. http://dx.doi.org/10.1108/acmm-05-2021-2483.

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Purpose The purpose of this paper is to develop a technological method of protection against electrical corrosion. One more way to protect the objects is to prevent the electrical current from getting to them. For example, railway objects are surrounded with a material with raised electrical resistance. Design/methodology/approach The railway infrastructure objects (foundations, contact-line supports, reinforced concrete sub-bases, bridge structures, pipelines of engineering networks, supports of passenger platforms and pedestrian bridges, concrete plinth walls of station buildings) are subjec

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Ahmed, Safuriyawu, Frédéric Le Mouël, Nicolas Stouls, and Gislain Lipeme Kouyi. "Development and Analysis of a Distributed Leak Detection and Localisation System for Crude Oil Pipelines." Sensors 23, no. 9 (2023): 4298. http://dx.doi.org/10.3390/s23094298.

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Crude oil leakages and spills (OLS) are some of the problems attributed to pipeline failures in the oil and gas industry’s midstream sector. Consequently, they are monitored via several leakage detection and localisation techniques (LDTs) comprising classical methods and, recently, Internet of Things (IoT)-based systems via wireless sensor networks (WSNs). Although the latter techniques are proven to be more efficient, they are susceptible to other types of failures such as high false alarms or single point of failure (SPOF) due to their centralised implementations. Therefore, in this work, we

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