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Journal articles on the topic 'Phase-to-phase short-circuit'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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1

Oliveira Filho, Milton E. de, Alfeu J. Sguarezi Filho, and Ernesto Ruppert. "A Three-phase to three-phase matrix converter prototype." Sba: Controle & Automação Sociedade Brasileira de Automatica 23, no. 3 (2012): 247–62. http://dx.doi.org/10.1590/s0103-17592012000300001.

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This paper presents some implementation details of a three-phase to three-phase matrix converter prototype. The bidirectional semiconductor switches were built using discrete IGBTs and fast diodes. Design aspects such as protection against overvoltage and short-circuit, commutation process of bi-directional switches, and input filter are addressed in this paper.

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2

Antonyuk, O. V., B. D. Vakser, N. A. Gusev, I. A. Kadi-Ogly, and A. N. Chibrikov. "Prevention of phase-to-phase short circuit in turbogenerators with water cooling windings." Russian Electrical Engineering 80, no. 3 (2009): 142–44. http://dx.doi.org/10.3103/s1068371209030067.

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3

Han, Fengling, Xinghuo Yu, Majid Al-Dabbagh, and Yi Wang. "Locating Phase-to-Ground Short-Circuit Faults on Radial Distribution Lines." IEEE Transactions on Industrial Electronics 54, no. 3 (2007): 1581–90. http://dx.doi.org/10.1109/tie.2007.894722.

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4

Wang, Shanming, Yuguang Sun, Ziguo Huang, and Shujun Mu. "Analysis of Stator Internal Phase-to-Phase Short Circuit in the 12-Phase Synchronous Generator With Rectifier-Load System." IEEE Transactions on Energy Conversion 33, no. 1 (2018): 299–311. http://dx.doi.org/10.1109/tec.2017.2748147.

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5

He, Cheng Bing, Dong Chao Chen, and Yu Jiong Gu. "Study on Dynamic Response of Torsional Vibration of Turbo-Generator Unit Caused by Short Circuit Fault." Advanced Materials Research 566 (September 2012): 248–52. http://dx.doi.org/10.4028/www.scientific.net/amr.566.248.

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When short circuit faults happen near power plant or generator terminal, severe transient torque shock will act on the shaft system, which seriously affects the safe and stable operation of the unit. Using the increment transfer matrix method, the dynamic responses of torsional vibrations are calculated in this work. Combined with the complex Morlet wavelet and time-frequency contour map, the time-frequency domain characters of dynamic torque are analyzed. The analyzed results show that the torque value caused by three phase short circuit fault is largest. The order of torque value from high t

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Zhumadirova, Aliya, Vadim Markovskiy, and Aleksandr Kislov. "Simulation of single-phase ground short circuit protection device." E3S Web of Conferences 288 (2021): 01038. http://dx.doi.org/10.1051/e3sconf/202128801038.

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The most common type of short circuit in a three-phase system is a single-phase-to-ground short circuit, accounting for 70 to 90% of electrical faults. In this paper simulation of the protective device from single-phase-to-ground short circuit with automatic change of current setting in electrical networks of 6-10 kV voltage on the basis of Coloured Petri Net is considered. The complexity of elaborated technical systems makes the problem of their modelling actual at the stage of development with the purpose of obtaining estimations of prospective and achievable characteristics. Now the modelli

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7

Xu, Chun Yu, Li Jun Zheng, Jian Cheng Song, and Yun Guang Gao. "Research and Application of Phase-Sensitive Protection in Load Control Center." Advanced Materials Research 317-319 (August 2011): 1259–62. http://dx.doi.org/10.4028/www.scientific.net/amr.317-319.1259.

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The malfunction of short-circuit protection became increasingly serious in the fully mechanized face casused by large power equipment, more kind of loads and long distance power. According to the field requirements, the electrical characteristics between motor starting and three-phase short-circuit are compared, the phase-sensitive protection circuit combining current signal amplitude with power factor is designed, the protection data is tested and the protection characteristic is analyzed. The phase-sensitive protection circuit has been uesd in KJZ-4000-10（6）/3.3 flameproof and intrinsically

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8

LIN, HUNG-YI, and YEN-TAI LAI. "DESIGN OF LOW POWER TWO-PHASE CMOS BUFFER FOR LARGE CAPACITIVE LOADING APPLICATIONS." Journal of Circuits, Systems and Computers 22, no. 02 (2013): 1250092. http://dx.doi.org/10.1142/s0218126612500922.

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In this paper, a low power two-phase CMOS buffer with short-circuit power elimination and charge reuse for non-speed-critical large capacitive loading applications is proposed. The short-circuit power eliminating circuit is designed to remove the short-circuit current at the buffer's output, which accounts for the largest portion of the short-circuit power dissipation of the CMOS buffer. The charge reuse circuit is used to reduce the output dynamic power dissipation of the two-phase buffer. Moreover, the overall power dissipation of the proposed buffer is further decreased by optimizing the nu

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9

Lv, Yanling, Yuting Gao, Jian Zhang, Chenmin Deng, and Shiqiang Hou. "Symmetrical Loss of Excitation Fault Diagnosis in an Asynchronized High-Voltage Generator." Energies 11, no. 11 (2018): 3054. http://dx.doi.org/10.3390/en11113054.

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As a new type of generator, an asynchronized high-voltage generator has the characteristics of an asynchronous generator and high voltage generator. The effect of the loss of an excitation fault for an asynchronized high-voltage generator and its fault diagnosis technique are still in the research stage. Firstly, a finite element model of the asynchronized high-voltage generator considering the field-circuit-movement coupling is established. Secondly, the three phase short-circuit loss of excitation fault, three phase open-circuit loss of excitation fault, and three phase short-circuit fault o

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10

Bu, Liang, Song Han, and Jinling Feng. "Short-Circuit Fault Analysis of the Sen Transformer Using Phase Coordinate Model." Energies 14, no. 18 (2021): 5638. http://dx.doi.org/10.3390/en14185638.

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The Sen Transformer (ST) provides an economical solution for power flow control and voltage regulation. However, fault analysis and evaluation of the performance of the transmission protection system in the presence of a ST have not been investigated. Hence, a short-circuit model of the ST using the phase coordinate method is proposed in this paper. Firstly, according to the coupled-circuit ST model, the nodal admittance matrix between the sending end and receiving end of the ST was deduced. Subsequently, a fully decoupled mathematical model was established that can reflect three characteristi

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11

Serebryakov, Aleksandr S., Vladimir L. Osokin та Sergey A. Kapustkin. "Two-Phase Short Circuit in the Power Grid Powered by a Transformer with a Y/Δ-11 Winding Connection". Elektrotekhnologii i elektrooborudovanie v APK, № 3 (20 вересня 2020): 25–30. http://dx.doi.org/10.22314/2658-4859-2020-67-3-25-30.

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The article describes main provisions and relations for calculating short-circuit currents and phase currents in a three-phase traction transformer with a star-triangle-11 connection of windings, which feeds two single-phase loads in AC traction networks with a nominal voltage of 25 kilovolts. These transformers provide power to the enterprises of the agro-industrial complex located along the railway line. (Research purpose) The research purpose is in substantiating theoretical equations for digital intelligent relay protection in two-phase short circuits. (Materials and methods) It was found

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12

Li, Yong Jian. "Research of Installing Small Reactors on Neutral Points of 500 KV Autotransformers and the Analysis of Overvoltage." Applied Mechanics and Materials 34-35 (October 2010): 1609–13. http://dx.doi.org/10.4028/www.scientific.net/amm.34-35.1609.

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Because of the extensive application of autotransformer in 500 kV power grid, the value of single-phase short-circuit current is generally greater than that of three-phase short-circuit current, or even greater than the maximum rated through current of the breaker. In order to reduce single-phase short-circuit current and avoid implement of bus split, this paper proposes to install small reactors on neutral points of 500 kV autotransformers. By analyzing and calculating the effect on short-circuit current limitation, the most suitable impedance value of small reactor is proposed. In addition，t

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13

Hitosugi, Kazuyoshi, Shoji Moriyasu, and Masayoshi Muraoka. "Open-Phase Voltage at Suddenly Line-to-Line Short Circuit of Synchronous Machine." IEEJ Transactions on Industry Applications 122, no. 4 (2002): 375–81. http://dx.doi.org/10.1541/ieejias.122.375.

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14

Xu, Yan, Qin Cheng Yuan, Xiao Yun Huang, and Lan Jiang. "Research on the Network Based Protection to Settle the Distribution Networks Three-Phase Short-Circuit Faults with Distributed Generators." Applied Mechanics and Materials 496-500 (January 2014): 1457–63. http://dx.doi.org/10.4028/www.scientific.net/amm.496-500.1457.

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A model is established to research on the applicability of network protection in theory. In this model, distributed power generation with constant power (PQ) control mode which is equivalent to a voltage control current source is taken as the research object. Fault ride-through control theory is used to analyze the influence on the network protection exerted by three-phase short-circuit fault. In this paper, the equivalent model of the distributed generation is offered firstly. Then the three-phase short-circuit fault characteristics are illustrated based on the equations of the access points

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15

Sergei, Kuzmin. "Single-phase ground short circuits in the 6–10 kV mains and electrical traumas in the coal mines." Izvestiya vysshikh uchebnykh zavedenii Gornyi zhurnal, no. 1 (February 17, 2020): 113–23. http://dx.doi.org/10.21440/0536-1028-2020-1-113-123.

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Introduction. This article provides analysis of electrical traumas and single-phase ground short circuits (SPGSC) in the 6–10 kV electrical systems in the period from 1995 to 2018. It has been shown that reduction in the number of SPGSC will improve electrical safety at coal mines. Research aim is to determine the interrelation between the indicated factors based on the statistical data in the 6–10 kV mains of coal mines according to SPGSC minor and moderate electrical traumas. Methodology. Coal production, development of single-phase ground short circuit and changes in numbers of injuries in

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16

Röder, Julian, Georg Jacobs, Tobias Duda, Dennis Bosse, and Fabian Herzog. "Simulative investigation of wind turbine gearbox loads during power converter fault." Forschung im Ingenieurwesen 85, no. 2 (2021): 251–56. http://dx.doi.org/10.1007/s10010-021-00461-2.

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AbstractThree phase short circuit power converter faults in wind turbines (WT) result in highly dynamic generator torque reversals, which lead to load reversals within the drivetrain. Dynamic load reversals in combination with changing rotational speeds are, for example, critical for smearing within roller bearings. Therefore, an investigation of the correlation between three phase short circuit converter faults and drivetrain component failures is necessary.Due to the risk of damage and the resulting costs, it is not economically feasible to extensively investigate three phase short circuit c

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17

Makowski, Krzysztof, and Aleksander Leicht. "Behaviour of single-phase self-excited induction generator during short-circuit at terminals." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 37, no. 5 (2018): 1815–23. http://dx.doi.org/10.1108/compel-01-2018-0027.

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PurposeThe purpose of this paper is to present analysis of short-circuit transients in a single-phase self-excited induction generator (SP-SEIG) for different capacitor topologies.Design/methodology/approachThe paper presents field analysis of the short-circuit problem in the SP-SEIG on the base of two-dimensional field-circuit model of the generator.FindingsThe carried-out field computations of the tested SP-SEIG show that the self-excited induction generator is intrinsically protected from the results of sudden short-circuit, as output voltage and current drop rapidly to zero. Short-circuit

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18

Li, Xing Wang, and Ju Rui Yang. "Transient Responses in Continuous Co-Phase Traction Power Supply System." Advanced Materials Research 1006-1007 (August 2014): 955–61. http://dx.doi.org/10.4028/www.scientific.net/amr.1006-1007.955.

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Continuous co-phase traction power supply system is the major change of the traction power supply. It is important to analyze the transient response characteristics of overhead contact line for the traction substation feeder protection. This article introduces the main structure of continuous co-phase traction power supply system and the control strategy of traction substation. Meanwhile, transient responses of overhead contact line in the earth short circuit are studied, including metallic earth short circuit and non-metallic earth short circuit (high resistance ground). In the PSCAD/EMTDC el

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19

Pietrowski, Wojciech. "Detection of time-varying inter-turn short-circuit in a squirrel cage induction machine by means of generalized regression neural network." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 36, no. 1 (2017): 289–97. http://dx.doi.org/10.1108/compel-03-2016-0121.

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Purpose Diagnostics of electrical machines is a very important task. The purpose of this paper is the presentation of coupling three numerical techniques, a finite element analysis, a signal analysis and an artificial neural network, in diagnostics of electrical machines. The study focused on detection of a time-varying inter-turn short-circuit in a stator winding of induction motor. Design/methodology/approach A finite element method is widely used for the calculation of phase current waveforms of induction machines. In the presented results, a time-varying inter-turn short-circuit of stator

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20

Romaniuk, F. A., O. A. Huryanchyk, M. A. Shevaldin, and V. S. Kachenya. "THE DETERMINATION OF THE KIND OF PHASE-TO-PHASE SHORT CIRCUIT IN CURRENT LINE PROTECTION OF 6–35 KV." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 60, no. 1 (2017): 5–15. http://dx.doi.org/10.21122/1029-7448-2017-60-1-5-15.

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21

Zain, Abdul, and Rifki Chairul Afwan. "Analisis Gangguan Arus Hubung Singkat Trafo Distribusi 48-PT-33-7 Menggunakan ETAP (Studi Kasus Di Perumahan PT. Badak NGL)." Jurnal Teknik Mesin Sinergi 17, no. 2 (2020): 99. http://dx.doi.org/10.31963/sinergi.v17i2.2073.

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The high frequency of short circuit current fault in power grid PT. Badak NGL Bontang in 2017 becomes a serious problem. One of them is the Short Circuit at Distribution Transformer 48-PT-33-7 which resulted in a feeder 48-FDR-33 trip and cut off the power to all connected loads. This research is conducted to know the value of short circuit current fault by manual calculation and compared with the simulation software ETAP 12.6 which made system modeling refers to real network configuration in the field. After that, ETAP conducted simulation and short circuit analysis in transformer 48-PT-33-7.

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22

Eteruddin, Hamzah, Hendry Hendry, and Atmam Atmam. "Analysis of Voltage Sag Due to Short Circuit on the Sub System in Central Sumatera." International Journal of Electrical, Energy and Power System Engineering 1, no. 2 (2018): 1–5. http://dx.doi.org/10.31258/ijeepse.1.2.1-5.

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Power quality is closely related to electrical energy which is directly related to voltage and current interference. Electrical equipment used daily requires good power quality. The thing that affects the quality of the power is the voltage dip. Based on the IEEE 1159-1995 standard, voltage sag is a decrease in RMS voltage with duration of 0.5 cycle to 1 minute. Sag voltage that occurs can have an effect on electronic equipment and other problems that often arise in the industrial environment. Therefore, a short circuit fault analysis was conducted to determine the voltage sag based on the typ

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23

Yang, Zhongyi, and Yiguang Chen. "Interturn Short-Circuit Fault Detection of a Five-Phase Permanent Magnet Synchronous Motor." Energies 14, no. 2 (2021): 434. http://dx.doi.org/10.3390/en14020434.

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Interturn short circuits are a common fault of permanent magnet synchronous motors (PMSMs). This paper proposes a new method to detect the interturn short-circuit fault (ISCF) of a five-phase PMSM. The method first takes the command voltage and measured current of each phase winding as the original signal and then obtains the delay signal orthogonal to the original signal via Hilbert transform. Then, the generalized instantaneous reactive power of each phase can be calculated from the orthogonal voltage and current signals of each phase. Finally, the influence of the ISCF on the generalized in

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Yasid, N. F. M., A. A. Alawady, M. F. M. Yousof, M. A. Talib, and M. S. Kamarudin. "The effect of short circuit fault in three-phase core-typed transformer." International Journal of Power Electronics and Drive Systems (IJPEDS) 11, no. 1 (2020): 409. http://dx.doi.org/10.11591/ijpeds.v11.i1.pp409-416.

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Different techniques for monitoring the transformer condition are continuously discussed. This is due to the fact that transformers are one of the most expensive components in the power system network. Not to mention the cost to fix any failure occurred in the transformer that have becoming more expensive nowadays. Frequency response analysis (FRA) is found to be the best method to monitor the transformer reliability. This paper presents a continuation of study presented in previous paper [1]. The study performed a laboratory test to show that the response of a normal winding phase A can be af

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Yang, Jian-wei, Man-feng Dou, and Zhi-yong Dai. "Modeling and Fault Diagnosis of Interturn Short Circuit for Five-Phase Permanent Magnet Synchronous Motor." Journal of Electrical and Computer Engineering 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/168786.

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Taking advantage of the high reliability, multiphase permanent magnet synchronous motors (PMSMs), such as five-phase PMSM and six-phase PMSM, are widely used in fault-tolerant control applications. And one of the important fault-tolerant control problems is fault diagnosis. In most existing literatures, the fault diagnosis problem focuses on the three-phase PMSM. In this paper, compared to the most existing fault diagnosis approaches, a fault diagnosis method for Interturn short circuit (ITSC) fault of five-phase PMSM based on the trust region algorithm is presented. This paper has two contrib

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Almanda, Deni, and Juniyanto Juniyanto. "Analisis Pengaruh Kompensasi Impedansi Urutan Nol (Kzn) terhadap Kehandalan Sistem Proteksi Rele Jarak (Distance Relay) pada Penghantar Harapan Indah di Gardu Induk Plumpang." RESISTOR (Elektronika Kendali Telekomunikasi Tenaga Listrik Komputer) 4, no. 1 (2021): 1. http://dx.doi.org/10.24853/resistor.4.1.1-6.

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Pada saat terjadi gangguan hubung singkat di saluran transmisi Gardu Induk Plumpang, rele jarak berfungsi sebagai proteksi utama. Penelitian ini bertujuan untuk mengetahui pengaruh kompensasi impedansi urutan nol (kzn) terhadap kehandalan sistem proteksi rele jarak (distance relay) pada penghantar harapan indah di Gardu Induk Plumpang. Setting rele jarak yang didapatkan dari PT PLN (Persero) UPT Pulogadung disimulasikan menggunakan alat uji Omicron. Hasil simulasi gangguan hubung singkat satu fasa, gangguan hubung singkat dua fasa, dan gangguan hubung singkat tiga fasa menggunakan setting lama

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KALINICHENKO, V., and I. PRIDATKO. "Some aspects of the calculation of short circuits in mine distribution networks. The calculation of the effective values of the short-circuit currents is carried out in order to determine the minimum." Journal of Electrical and power engineering 14, no. 1 (2020): 66–69. http://dx.doi.org/10.31474/2074-2630-2020-1-66-69.

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The calculation of the effective values of the short-circuit currents is carried out in order to determine the minimum value of the current of the two- phase short-circuit required to select the settings of the means of protection, as well as the maximum value of the current of the three-phase short-circuit required to test the switching equipment for the ability to switch off. In most studies, the calculation of short-circuit currents is carried out only taking into account the total resistance of the transformer substation and the cable network. They also take into account the maximum short-

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Tarko, Rafał, Jakub Gajdzica, Wiesław Nowak, and Waldemar Szpyra. "Comparative Analysis of High-Voltage Power Line Models for Determining Short-Circuit Currents in Towers Earthing Systems." Energies 14, no. 16 (2021): 4729. http://dx.doi.org/10.3390/en14164729.

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The article deals with the problems of single-phase short-circuit current distribution in overhead power lines. Short-circuit disturbances cause many negative phenomena in power networks. Since experimental studies of short-circuits in real networks are practically impossible to perform, these effects can be evaluated only theoretically, based on short-circuit current calculations with the use of appropriate mathematical models. Although short-circuit modeling is considered to be one of the simplest power system calculations, the exact mathematical description of the phenomena occurring at sho

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Abdullateef, A. I., O. S. Fagbolagun, M. F. Sanusi, M. F. Akorede, and M. A. Afolayan. "Detection and Classification of Stator Short-Circuit Faults in Three-Phase Induction Motor." Journal of Applied Sciences and Environmental Management 24, no. 3 (2020): 417–24. http://dx.doi.org/10.4314/jasem.v24i3.3.

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Induction motors are the backbone of the industries because they are easy to operate, rugged, economical and reliable. However, they are subjected to stator’s faults which damage the windings and consequently lead to machine failure and loss of revenue. Early detection and classification of these faults are important for the effective operation of induction motors. Stators faults detection and classification based on wavelet Transform was carried out in this study. The feature extraction of the acquired data was achieved using lifting decomposition and reconstruction scheme while Euclidean dis

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Eleschová, Žaneta, and Marián Ivanič. "Impact of Asymmetry of Over-Head Power Line Parameters on Short-Circuit Currents." TRANSACTIONS ON ELECTRICAL ENGINEERING 5, no. 4 (2020): 112–15. http://dx.doi.org/10.14311/tee.2016.4.112.

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<span lang="EN-GB">This paper analyses the impact of asymmetry of over-head power line parameters on short circuit currents when three-phase fault and phase-to-ground fault occur. The calculation results with consideration of an asymmetry of the power line parameters are confronted with the calculation in accordance with the Slovak standard STN EN 60909 which does not consider asymmetry of equipment parameters in the power system. The calculation of short-circuit conditions was carried out for two types of 400 kV power line towers on which is a considerably different arrangement of phase

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Syvokobylenko, V. F., and V. A. Lysenko. "APPLICATION OF WAVELET TRANSFORM FOR PHASE-TO-GROUND FAULT PROTECTION IN MEDIUM VOLTAGE ELECTRICAL NETWORKS." Tekhnichna Elektrodynamika 2021, no. 4 (2021): 55–62. http://dx.doi.org/10.15407/techned2021.04.055.

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For electrical networks with voltage of 6-35 kV with a compensated, isolated or resistor-grounded neutral, a phase-to-ground protection has been developed, in which, based on the results of the time-frequency wavelet transform of zero-sequence currents, voltages and their derivatives, using the obtained analytical expression, the total reactive power wavelet for different frequencies is determined. It is shown that at the initial moment of a phase-to-ground fault on the damaged feeder the power is always positive, and on the undamaged feeder it is negative, regardless of the operating mode of

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Głowacz, Z., and J. Kozik. "Detection of Synchronous Motor Inter-Turn Faults Based on Spectral Analysis of Park’S Vector / Detekcja Zwarc Zwojowych W Silniku Synchronicznym Bazujaca Na Analizie Spektralnej Wektora Przestrzennego Pradu Twornika." Archives of Metallurgy and Materials 58, no. 1 (2013): 19–23. http://dx.doi.org/10.2478/v10172-012-0144-y.

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This paper describes detection of synchronous motor inter-turn faults based on symptoms contained in stator phase currents. Armature short circuit, caused by insulation degradation are quite commonly occurring defects in electrical machines. Initially, short circuit comprises mostly single coils, causing the temperature rise due to higher value of current, which can reach up to tens times of the rated value. At the same time the phase current does not increase significantly. Increased temperature leads to rapid damage of the insulation and shorting the adjacent coils spreading the fault to the

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Li, Tao, Zhi Yong Dai, Ai Qing Luo, Shu Pan, Xi Cong Xiong, and Nian Cheng Zhou. "Three Phase Short Circuit Current Evaluation of Induction Generator for Wind Turbine in Distribution Network." Advanced Materials Research 953-954 (June 2014): 582–86. http://dx.doi.org/10.4028/www.scientific.net/amr.953-954.582.

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The transient characteristics of induction generator (IG) were investigated in the paper, and the analytic formula of its stator current under three-phase short circuit in distribution network was derived. According to the change law of IG rotor speed under the grid fault, an evaluation method to determine the current peak of three-phase short circuit for induction generator in distribution grid is proposed. The correctness of the proposed method was verified by the fifth electromagnetic transient model of IG in PSCAD/EMTDC simulation software.

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Lu, Yuan, Xiao Ou Song, and Xiao Li Lu. "The Study of the Digital Three-Phase Phase-Locked Loop in the Photovoltaic Grid System." Applied Mechanics and Materials 401-403 (September 2013): 1571–74. http://dx.doi.org/10.4028/www.scientific.net/amm.401-403.1571.

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In order to track the phase of the voltage of the grid quickly and accurately in the photovoltaic grid system, a digital three-phase phase locked loop optimization method that can be completed by FPGA, which can lock the in a short time and adjust the power system voltage phase to the synchronization with the grid voltage. This design consists of three-phase phase detector, comparator and bit phase locking circuit. The principle of synchronous rotating coordinate transformation and lookup table of RAM are used to adjust the phase error more and more fine-tune. The adjustment of the phase is co

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35

Namdari, Farhad, Mohammad Bakhshipour, Behroz Rezaeealam, and Mohammad Sedaghat. "Modeling of Magnetizing Inrush and Internal Faults for Three-Phase Transformers." International Journal of Advances in Applied Sciences 6, no. 3 (2017): 203. http://dx.doi.org/10.11591/ijaas.v6.i3.pp203-212.

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Among the most noticeable root causes of improper performance in power transformers, internal short circuit faults can be noted and if not quickly be identified and addressed in the accepted time interval, irrecoverable damages such as interruption or even collapse of the network connected to the power transformer would happen. In this contribution, three-phase transformer behaviors under magnetizing inrush, internal short circuit condition and their current values determination have been surveyed using electromagnetic coupling model approach and structural finite element method. Utilizing the

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Bakhshipour, Mohammad, Farhad Namdari, and Mohammad Sedaghat. "Modeling of Magnetizing Inrush and Internal Faults for Three-phase Transformers." Indonesian Journal of Electrical Engineering and Computer Science 3, no. 1 (2016): 26. http://dx.doi.org/10.11591/ijeecs.v3.i1.pp26-37.

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Among the most noticeable root causes of improper performance in power transformers, internal short circuit faults can be noted and if not quickly be identified and addressed in the accepted time interval, irrecoverable damages such as interruption or even collapse of the network connected to the power transformer would happen. In this contribution, three-phase transformer behaviors under magnetizing inrush, internal short circuit condition and their current values determination have been surveyed using electromagnetic coupling model approach and structural finite element method. Utilizing the

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LIU, GAOMIN, FUPING ZHANG, JINMEI DU, HUA TAN, and HONGLIANG HE. "PHASE TRANSITION AND CURRENT PROPERTIES OF PZT 95/5-2NB FERROELECTRIC CERAMIC UNDER DYNAMIC LOADING." International Journal of Modern Physics B 22, no. 09n11 (2008): 1171–76. http://dx.doi.org/10.1142/s0217979208046499.

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The high density ferroelectric ceramic with composition near Pb 0.99( Zr 0.95 Ti 0.05)0.98 Nb 0.02 O 3 ( PZT 95/5-2 Nb ) has been studied under dynamic loading. To characterize its ferroelectric-to-antiferroelectric(FE/AFE) phase transition under shock wave compression, reverse-impact experiments were conducted to determine the Hugoniot states of poled and unpoled PZT 95/5-2 Nb , and the shock-induced depoling currents were examined in an external circuit under short-circuit conditions for the poled PZT 95/5-2 Nb . The Hugoniot data and current results identify that the phase transition of FE/

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Gu, Yu Jiong, and Jing Xu. "Analysis on Torsional Stresses in Turbo-Generator Shafts due to Two-Phase Short-Circuit Fault." Applied Mechanics and Materials 397-400 (September 2013): 427–30. http://dx.doi.org/10.4028/www.scientific.net/amm.397-400.427.

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Taking a 660MW turbine generator shaft system as a target system, the torsional stresses responses are calculated under two-phase short-circuit fault by the finite element (FE) method which can obtain torsional stresses in local areas accurately. The results show that torsional stresses threaten the safety of shafts appear at the first several cycles of the vibration. And the amplitude of stress in weak cross sections located between the low pressure cylinder and the generator is much greater. In addition, the proportion of torsional stresses frequency components in different sections is disti

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Roger, Daniel, Ewa Napieralska-Juszczak, and Krzysztof Komeza. "Influence of the earth connections of the PWM drive on the voltage constraints endured by the motor insulation." Open Physics 18, no. 1 (2020): 619–30. http://dx.doi.org/10.1515/phys-2020-0146.

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AbstractThe high electrical stresses in the Electrical Insulation Systems of machines fed by pulse width modulation (PWM) inverters remain a limitation of the lifetime. The stress is caused by repetitive over voltages caused by the short switching times of the PWM inverter power electronic circuit. This paper provides measurements made on an industrial drive connected to the grid with standard cables that include a ground connection wire, following the current standards. The phase-to-phase, phase-to-neutral, and neutral-to-ground voltages are measured focusing on short and repetitive voltage s

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Li, Li. "A Fault Line Detection Method Based on Wavelet Packet Analysis in Distribution Network." Advanced Materials Research 614-615 (December 2012): 1833–40. http://dx.doi.org/10.4028/www.scientific.net/amr.614-615.1833.

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With the rapid development of power network automation, the detection of the default single-phase grounding fault line in small current neutral grounding system has became a hot spot in research of power network system. Generally, power network neutral point is not grounded or grounded through arc-suppression coil grounding. When single phase grounding fault occurs, the power network system is named as small current grounding system since the grounding short-circuit is small due to a low-impedance short circuit.

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Calnela, Cilvia, Suyitno, and Imam Arif Raharjo. "ANALISIS HUBUNG SINGKAT PADA GARDU INDUK 150/20 KV (STUDI KASUS DI GARDU INDUK GANDUL, CINERE)." Journal of Electrical Vocational Education and Technology 4, no. 2 (2020): 53–59. http://dx.doi.org/10.21009/jevet.0042.09.

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This study aims to determine the difference in short circuit current with manual calculation and ETAP 12.60 Simulation in to know the suitability of capacity circuit breaker Substasion 150/20 kV at Gandul. The used method is qualitative descriptive method. The subject that will be studied is short circuit on the substation 150/20 kV Gandul Cinere. The research was conducted by using is manual calculation and software ETAP 12.60 simulation. The results obtained is differences of the short circuit current is not significant between the manual calculation and software ETAP 12.60 simulation in thr

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Gao, Kun, Zhe Nan Zhang, Quan Sheng Zhu, and Liang Yuan. "Research on Low Voltage Ride through of Coal-Fired Power Unit Auxiliary in Henan." Applied Mechanics and Materials 441 (December 2013): 281–85. http://dx.doi.org/10.4028/www.scientific.net/amm.441.281.

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The electric power short circuit breakdown may cause low voltage blocking of frequency-converter giving rise to power unit shutdown accident,three typical coal-fired power units are selected to emulate calculations on low voltage ride ability with considering threephase short-circuit earthing fault, threephase short-circuit earthing fault by impedance, single-phase short-circuit earthing fault ,indicating that the short-circuit fault of the lines integrating into power system would result in the voltage of house-service busbar dropping off to 25%-85%,especially threephase short-circuit earthin

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Yassa, N., M. Rachek, A. Djerdir, and M. Becherif. "Detecting of Multi Phase Inter Turn Short Circuit in the Five Permanent Magnet Synchronous Motor." International Journal of Emerging Electric Power Systems 17, no. 5 (2016): 583–95. http://dx.doi.org/10.1515/ijeeps-2016-0084.

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Abstract This paper proposes a general model of five phase permanent magnet synchronous machine (PMSM) which is capable of representing the multiphase Inter Turn Short Circuit (ITSC) occurring in several phase simultaneously this model is based on a coupled magnetic circuit approach leading to a differential equations system goveming the induction machine behavior. The obtained time-differential state equations system is implemented under Matlab environment and numerically solved using the fourth order Rung-Kutta method with variable step time corrected at each rotor displacement through the e

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Idoniboyeobu, D. C., S. L. Braide, and Wigwe Elsie Chioma. "Fault Assessment and Mitigation of the 132kV Transmission Line in Nigeria using Improved Resonant Fault Current Limiting (RFCL) Protection Scheme." European Journal of Engineering Research and Science 3, no. 10 (2018): 38–44. http://dx.doi.org/10.24018/ejers.2018.3.10.796.

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This research work proposed an improved Resonant Fault Current Limiting (RFCL) protection scheme to reduce the impact of three-phase short-circuit faults in a power system sub-transmission network. The model used an interpolator-extrapolator technique based on a Resonant Fault Current Limiter (RFCL) for automating the procedure of predicting the required reactor value that must be in resonant circuit to limit the short-circuit current values to permissible values. Using the developed model, short-circuit fault simulations on the three phases of the transmission line (Phase A-C) were performed

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Puzakov, Andrey. "Diagnosing of automotive alternators on thermal state." MATEC Web of Conferences 298 (2019): 00005. http://dx.doi.org/10.1051/matecconf/201929800005.

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Since automotive alternators serve as the primary sources of power onboard of vehicles, the online diagnostics of technical conditions thereof is a relevant task. An advantage of temperature as a diagnostic parameter is sensitivity to most faults at the early stage of their development. Physical modeling of faults (stator one-line open fault, stator turn-to-turn short circuit, stator winding phase-to-phase short circuit, circuit opening and short circuit of rectifier diodes) has been done by forced increase (decrease) of electrical resistance between alternator elements. In order to measure al

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Bensaoucha, Saddam, Youcef Brik, Sandrine Moreau, Sid Ahmed Bessedik, and Aissa Ameur. "Induction machine stator short-circuit fault detection using support vector machine." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 40, no. 3 (2021): 373–89. http://dx.doi.org/10.1108/compel-06-2020-0208.

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Purpose This paper provides an effective study to detect and locate the inter-turn short-circuit faults (ITSC) in a three-phase induction motor (IM) using the support vector machine (SVM). The characteristics extracted from the analysis of the phase shifts between the stator currents and their corresponding voltages are used as inputs to train the SVM. The latter automatically decides on the IM state, either a healthy motor or a short-circuit fault on one of its three phases. Design/methodology/approach To evaluate the performance of the SVM, three supervised algorithms of machine learning, na

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Arzul, Ija Darmana, Erliwati, Adiv Rama Salvayer, and Tris Safri Yetno. "Analysis of Characteristics Over Current Relay and Ground Fault Relay on Feeder Rayon Tabing." MATEC Web of Conferences 248 (2018): 02006. http://dx.doi.org/10.1051/matecconf/201824802006.

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The reliability of power distribution of PT PLN (Persero) branch of Padang especially in Rayon Tabing most of the repeaters is still not optimal. This is due to an uncoordinated protection relay on each feeder. One effort made to improve the reliability of electric power is to rearrange the protection of overcurrent relays and ground disturbance relays on the feeder. So coordinated with each other well and is expected if there is interference in one of the repeater will not bring black out on other repeater. In this research we analyzed short circuit current at 20 kV side. From the analysis re

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Zhu, Ke, Xiao Hui Lu, and Bo Zhang. "A Novel Method of Impedance Measurement Used in Islanding Detection Based on Controllable Short-Circuit Technology." Applied Mechanics and Materials 130-134 (October 2011): 752–56. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.752.

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It is very important for a distributed generating system to have an islanding detection part. Focused on the problem of islanding, this paper proposes a new and effective islanding detection scheme: a thyristor is placed between any two phases just by the port of the distributed generator (DG). An artificial short time phase to-phase short circuit is formed by triggering the thyristor periodically when the voltage between this thyristor is almost equal to zero, so the short-circuit current and voltage pulse can be extracted out. Because that short-circuit current and voltage pulse contain plen

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Quan, Yu Sheng, Xin Zhao, Hua Gui Chen, and En Ze Zhou. "The Economic Operation of Common Coupling Groups of Distribution Transformer." Applied Mechanics and Materials 521 (February 2014): 288–91. http://dx.doi.org/10.4028/www.scientific.net/amm.521.288.

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Based on the method of symmetrical components of D, 11 and Y, o distribution transformer coupling two different effects of different magnetic circuit coupled to the three-phase system with a system-generated analysis and comparison. Analysis of the difference between the two groups of different connections on the transformer structure. Described in the single-phase short circuit fault clearing, 3n harmonic current suppression and affordability aspects of single-phase unbalanced load, D, ll coupling transformers are significantly better than Y,0 coupling transformer. This has necessarily import

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Токарский, A. Tokarskiy, Рубцова, Nina Rubtsova, Рябченко, and V. Ryabchenko. "Voltages Induced in Overhead Ground-Wire Cable as Risk Factor. Part 2." Safety in Technosphere 5, no. 2 (2016): 43–56. http://dx.doi.org/10.12737/20795.

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To ensure the personnel safety during live working on overhead transmission line (OTL), as well as lightning protection cables’ (LPC) isolation integrity maintaining, by the example of three-phase 750 kV OTL has been presented an algorithm for calculation of voltages, electro-moving forces and currents induced by single phase short-circuit currents’ magnetic field of OTL in LPC1 grounded in one point, and in LPC 2 (with fiber-optic communication line function) grounded at every tower. For single-phase short circuit modes has been presented an algorithm for length select

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