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Articoli di riviste sul tema "Electric lines"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 29 luglio 2024

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1

ARRIBAS, E., C. GALLARDO, M. MOLINA e V. SANJOSÉ. "Electric Field Lines". International Journal of Modern Physics C 02, n. 01 (marzo 1991): 216–19. http://dx.doi.org/10.1142/s0129183191000196.

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We present the computer program called LINES which is able to calculate and visualize the electric field lines due to seven different discrete configurations of electric point charges. Also we show two examples of the graphic screens generated by LINES.

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2

MAMADA, Yasuhiro, Seiji HAYANO, Yoshifuru SAITO e Kiyoshi HORII. "Electric Power lines Visualization". Journal of the Visualization Society of Japan 25, Supplement1 (2005): 173–76. http://dx.doi.org/10.3154/jvs.25.supplement1_173.

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3

Jiang, Yu Ze, Zhen Guang Liang, Wei Jie Ma e Hong Chuan Wang. "Effect of Shielding Lines on Power Frequency Electric Field under Overhead Lines". Advanced Materials Research 732-733 (agosto 2013): 999–1004. http://dx.doi.org/10.4028/www.scientific.net/amr.732-733.999.

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This paper discusses effect of shielding lines on reduction of electric field produced by overhead lines. Charge simulation method is used. Influences of height, space and number of shielding lines on electric field are calculated. Space between shielding lines has reverse roles on influencing area and maximal electric field. Number and space of shielding lines should be carefully selected to shielding a certain area. Analytical method is also used to express induced electric field by shielding lines. Result of comparison with charge simulation method shows that it is suitable for area outside of three phase lines.

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4

Robinson, P. B. "Communicating over electric distribution lines". IEEE Potentials 9, n. 3 (ottobre 1990): 36–39. http://dx.doi.org/10.1109/45.101399.

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5

Lacombe, Rémi, Sébastien Gros, Nikolce Murgovski e Balázs Kulcsár. "Hierarchical Control of Electric Bus Lines". IFAC-PapersOnLine 53, n. 2 (2020): 14179–84. http://dx.doi.org/10.1016/j.ifacol.2020.12.1040.

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6

Colwell, Peter F., e Jim L. Sanders. "Electric Transmission Lines and Farmland Value". Journal of Real Estate Research 39, n. 3 (1 luglio 2017): 373–400. http://dx.doi.org/10.1080/10835547.2017.12091478.

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7

Sugar, Jack, Joseph Reader e William L. Rowan. "Electric-quadrupole lines of Mo xvi". Physical Review A 51, n. 1 (1 gennaio 1995): 835–37. http://dx.doi.org/10.1103/physreva.51.835.

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8

Kirkup, L. "Computer simulation of electric field lines". Physics Education 20, n. 3 (1 maggio 1985): 142–45. http://dx.doi.org/10.1088/0031-9120/20/3/314.

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9

Predus, Marius-Florian, Cristian-Mircea Muscai e Cornel Hatiegan. "Simulation of electric field lines produced by electric point charges". Studia Universitatis Babeș-Bolyai Engineering 67, n. 1 (11 novembre 2022): 209–15. http://dx.doi.org/10.24193/subbeng.2022.1.20.

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The paper proposes o method of solving differential equations using Runge-Kutta method and presents an application made in a Visual programming language that solves two differential equations step by step drawing the graph obtained for two electrically charged particles that interact by their electrical fields

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10

Yang, Yi, Xue-kai Si Ma, Shu-bo Fang, Qing Han e Zan-dong Zhou. "Analysis of monitoring effect on Hybrid Electric Field for AC/DC Cross Line". Journal of Physics: Conference Series 2378, n. 1 (1 dicembre 2022): 012018. http://dx.doi.org/10.1088/1742-6596/2378/1/012018.

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Abstract Electrostatic induction charge which generated by the coupling effect of hybrid electric field of AC/DC cross line and metal object under the transmission line can cause different levels of electric shock injury to human. In order to find out the distribution law of the hybrid electric field and reduce the effect of electrostatic induction, this paper set up shielding lines which paralleled to the AC and DC lines respectively on the outside of the side conductors and along the diagonal of parallelogram at crossing point, then measured the electric field distribution in shielding areas of 750kV AC and 500kV DC lines and the induced voltages of shielding lines in different states, analyzed the effect of shielding line on power frequency electric field and DC composite electric field. The results showed that shielding lines have a reducing effect on the hybrid electric field of the cross lines, the average power frequency field strength is reduced by 12.6%, the DC composite field and power frequency electric field at the crossing position was far less than the limits specified in the respective standards. Both induced voltage of bare lines and shielding lines wrapped with adhesive tape increase with the raise of erection height. Under the same conditions, the average induction voltage of bare conductor is 9.3% higher than that of shielding lines wrapped with adhesive tape. There is no obvious difference between parallel and vertical erection methods of the same number of shielding lines in the degree of reduction of induced voltage.

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11

Watkins, Noel. "Raptors and Power Lines". Wildlife Rehabilitation Bulletin 22, n. 2 (31 dicembre 2004): 14–16. http://dx.doi.org/10.53607/wrb.v22.231.

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During the last 30 years, bird mortality caused by overhead wires has been an increasing concern of conservationists, environmental management authorities, and electric companies. Electric companies’ concerns stem in part from power outages that can be caused by these incidents. Animals are the third leading cause of power outages across the US and birds cause more outages than any other animal (Harness and Wilson 1998). This issue is important to conservationists because populations of endangered species may be unable to compensate for the deaths caused by utility structures (Bevanger 1998). In 1992, three of the eight California condors (Gymnogyps californianus) released into the wild from a captive breeding program were found electrocuted (Bevanger 1998).

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12

Schluger, J. H., e C. D. Hopkins. "Electric fish approach stationary signal sources by following electric current lines". Journal of Experimental Biology 130, n. 1 (1 luglio 1987): 359–67. http://dx.doi.org/10.1242/jeb.130.1.359.

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African electric fish of a pulse species, Brienomyrus brachyistius (Mormyridae), housed singly in a large, circular arena, were presented with electrical stimuli which mimicked a conspecific intruder. Stimuli were produced with either dipolar or bipolar electrodes in three different geometries. We tracked the unconditioned approach response paths taken by the fish and compared tracks for each of the geometries. The results suggest that B. brachyistius can determine neither the distance nor the direction of an electric dipole from afar, but that they do manage to find the source by maintaining a precise alignment of their body axis parallel to the direction of the local electric field vector (parallel to current lines) while swimming. This behaviour ultimately leads to the current source. We propose that this behaviour may be a simple mechanism mediating the approach response of one electric fish to another.

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13

Lee, Gunbok, Jeong-Yeon Kim, Gildong Kim e Jae Hee Kim. "Surface-Integrated Electric Field Sensor for the Detection of High-Voltage Power Lines". Sensors 21, n. 24 (13 dicembre 2021): 8327. http://dx.doi.org/10.3390/s21248327.

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When a drone is used for inspection of facilities, there are often cases in which high-voltage power lines interfere, resulting in the drone being caught or falling. To prevent this type of incident, drones must be capable of detecting high-voltage power lines. Typically, a strong electric field is formed around the high-voltage lines. To detect the electric fields around high-voltage lines, this study proposes an electric field sensor that may be integrated within the body of a drone. In a laboratory environment, a voltage of 25 kV was applied to an overhead line, and the induced voltage in the proposed sensor was measured at various electric field intensities. Over an electric field range of 0.5 to 10.1 kV/m, a voltage of 0 to 0.77 V was measured with each proposed sensor. In addition, the electric field and the voltage induced in the sensor were measured in a real-world railway environment with overhead lines. Under these conditions, the proposed sensor has the compensated value of 4.5 when the measured electric field was 4.05 kV/m. Therefore, the proposed sensor may be applied in drones to measure large electric fields and to detect the presence of high-voltage lines in its vicinity.

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14

Voelcker, John. "Spectral lines: An Almost All-Electric Car?" IEEE Spectrum 45, n. 4 (2008): 9. http://dx.doi.org/10.1109/mspec.2008.4476427.

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15

Garg, Rachana, Priya Mahajan e Parmod Kumar. "Digital Model of Railway Electric Traction Lines". Journal of The Institution of Engineers (India): Series B 98, n. 4 (22 agosto 2016): 377–84. http://dx.doi.org/10.1007/s40031-016-0256-2.

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16

Furby, Lita, Paul Slovic, Baruch Fischhoff e Robin Gregory. "Public perceptions of electric power transmission lines". Journal of Environmental Psychology 8, n. 1 (marzo 1988): 19–43. http://dx.doi.org/10.1016/s0272-4944(88)80021-5.

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17

Gould, P. L. "Special issue design of electric transmission lines". Engineering Structures 15, n. 4 (luglio 1993): 227. http://dx.doi.org/10.1016/0141-0296(93)90024-x.

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18

Göttlich, Simone, Michael Herty e Peter Schillen. "Electric transmission lines: Control and numerical discretization". Optimal Control Applications and Methods 37, n. 5 (17 novembre 2015): 980–95. http://dx.doi.org/10.1002/oca.2219.

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19

Ogunboyo, Taiwo. "A Survey of Power Quality Enhancement in Distribution of System of Lines Using Distribution Static Synchronous Compensator". Science View Journal 3, n. 1 (15 aprile 2022): 163–70. http://dx.doi.org/10.55989/babz6904.

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Distribution Static Synchronous Compensator (DSTATCOM) is a power electronics tool joined in parallel to the system of lines to mitigate the power quality disruptions such as electric potential swell, sag, electric potential imbalance, electric potential and current harmonics voltage spike, flicker, electric potential fluctuations related to the secondary system of lines.. DSTATCOM provides electric potential control and adequate mitigation for disturbances related with distribution of system lines in community. DSTATCOM is a3-phase device that produces/ take in the dynamic power which the final outcome can transformed suitable situation to deal with specific and accurate able to change quantity of the system of lines. This article offers a critical look to the researches on the DSTATCOM for energy quality enhancement in electric distribution systems. It explains the basic elements and configuration of DSTATCOM, the operation mode of DSTATCOM, principle of operation of DSTATCOM, DSTATCOM configurations, and DSTATCOM control strategies in the electric distribution network.

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20

Liang, Zhen Guang, Yu Ze Jiang, Di Wen Jiang e Zong Jie Liu. "Calculation of Power Frequency Electric Field under Overhead Lines with Complex Ground". Applied Mechanics and Materials 441 (dicembre 2013): 212–16. http://dx.doi.org/10.4028/www.scientific.net/amm.441.212.

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This paper studied influence of three dimension complex ground on electric field under overhead lines. Surface charge method is discussed and planar triangle surface charge elements are used to represent complex ground. Electric field of overhead lines is analyzed by charge simulation method. Finite straight line charges are used to represent conductors. Then electric field of 220kV double circuit overhead lines over a three dimension small hill is calculated and distribution of electric field 1.5m above the ground is analyzed.

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21

Liu, Bin, Tao Wang, Fei Gu, Jie Wei, Hong Wei Cui, Wei Hua Guo, Rui Yun Miao e Rui Xiao Wang. "Analysis of 50Hz Electric Fields Generated by Multi-Circuit Transmission Lines on the Same Tower". Applied Mechanics and Materials 700 (dicembre 2014): 67–70. http://dx.doi.org/10.4028/www.scientific.net/amm.700.67.

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The finite element method has been applied to calculate the 50Hz electric fields nearby the transmission lines. The electric field strengths nearby multi-circuit transmission lines on the same tower under different arrangement of phase sequence, nearby the cross-arm are calculated. According to the foreign and domestic security standards of 50Hz electric field, the impacts of overhead transmission lines on environment are evaluated and the adoptable measures to reduce electric field strength are proposed. Meanwhile the distributing pattern of the electric field nearby the cross-arm is analyzed and proposals for further protection measures during maintenance operation are provided.

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22

Zhou, Quan, Li Tu, Rui Bie, Dong Feng e You Ping Fan. "Multi-State Electric Field Analysis of 1-Tower-Double-Circuit HVDC Transmission Lines Based on Charge Simulation Method". Applied Mechanics and Materials 521 (febbraio 2014): 321–29. http://dx.doi.org/10.4028/www.scientific.net/amm.521.321.

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Currently, there is little experience about design of the 1-tower-double-circuit DC transmission lines. But the electromagnetic field distribution under its lines is complicated. In order to study the nominal electric field distribution of 1-tower-double-circuit DC transmission lines under different situations and a variety of operating conditions, the currents with analytical solutions are used to simulate the discrete or uneven distributed continuous charge. In the works within an acceptable range, the linear equations are built to solve simulation charge according to the electromagnetic theory. And ground nominal electric field of 1-tower-double-circuit DC transmission lines is calculated. The nominal electric field distribution extreme value extreme under different arrangements and nominal electric field distribution under a variety of operating conditions are analyzed comparatively. In this paper, the results show that the arrangements of lines have effects on the distribution characteristics of nominal electric field in normal condition. When monopole or bipolar or the bipolar of one line doesnt work, the change of nominal electric field is pronounced, but their extremes reduce.

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23

Le, Le. "Analysis on the Infrared Imaging Diagnosis Technology for the Insulation State, Fault Types, and Components of Coupling Capacitor". Applied Mechanics and Materials 416-417 (settembre 2013): 1064–67. http://dx.doi.org/10.4028/www.scientific.net/amm.416-417.1064.

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Along with the continuous development of Chinese economy, the power consumption continues to rise in China, and many high-voltage electric transmission lines are constantly put in construction. Among them, coupling capacitor is a major coupling device in the carrier communication of the power frequency high-voltage lines, and also a device that has been widely used for measuring and extracting electric energy, and controlling high-frequency protection in the electric power system. However, there are many problems in the application of coupling capacitor to high-voltage electric transmission lines. In the following, some common problems in the application of infrared imaging diagnosis technology to the coupling capacitor in high-voltage electric transmission lines are tested, so that the corresponding problems are found timely and accurately and also the right processing is made.

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24

Jiang, Yu Ze, Zhen Guang Liang, Can Li e Bin Xiang Du. "Effect of Phase Sequence Layout on Electric Field under Overhead Lines". Advanced Materials Research 960-961 (giugno 2014): 921–24. http://dx.doi.org/10.4028/www.scientific.net/amr.960-961.921.

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This paper discusses effect of phase sequence layout on electric field under overhead lines. Charge simulation method is used. Examples of two circuit overhead lines and four circuit overhead lines show that phase arrangment of lowest height conductors has major influence and phase arrangment of middle height conductors has lesser influence on electric field under overhead lines. Interlacing placed lowest height conductors with different phase and phase arrangement of middle height conductors different from that of lowest height conductors help to reduce electric field.

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25

Liao, Wei, Qing Yang, Kun Ke, Zhenhui Qiu, Yuqing Lei e Fei Jiao. "Non-Intrusive Voltage-Inversion Measurement Method for Overhead Transmission Lines Based on Near-End Electric-Field Integration". Energies 16, n. 8 (13 aprile 2023): 3415. http://dx.doi.org/10.3390/en16083415.

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Existing electric-field integral inversion methods have limited field application conditions, and they are difficult to arrange electric-field measurement points on high-span overhead lines. This paper proposes a non-intrusive voltage measurement method for overhead transmission lines based on the near-end electric-field integration method. First, the electric-field distribution under 10 kV lines is calculated by finite element simulation software. The electric-field distribution of the plumb line and the discrete integral node below the wire are analyzed. Then, based on traditional electric-field integration, a line-voltage-inversion measurement method based on near-end electric-field integration is proposed. In addition, a voltage-monitoring system based on near-end electric-field integration is constructed. Next, the numerical integration types, the number of integration nodes, and the scale coefficient of the near-end region of the inversion algorithm are optimized with the electric-field simulation data. Finally, to verify the voltage-inversion method proposed in this paper, a test platform for overhead-line voltage is constructed using a MEMS electric-field sensor. The results indicate that the voltage-inversion error is 5.75%. The research results will provide theoretical guidance for non-intrusive voltage-inversion measurement of overhead lines.

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Cui, Xiang. "The visualization of electric force lines in two‐dimensional electric field computation". Engineering Computations 17, n. 2 (marzo 2000): 166–74. http://dx.doi.org/10.1108/02644400010313110.

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27

Cao, Xia. "Electra-electric induction for power generation by cutting through electric field lines". Nano Energy 112 (luglio 2023): 108519. http://dx.doi.org/10.1016/j.nanoen.2023.108519.

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Hu, Jian Xun, Gong Da Zhang, Hong Yu Zhang e Xiao Qin Zhang. "Electric Field Analysis of 220 kV Composite Material Tower Lines". Advanced Materials Research 516-517 (maggio 2012): 1517–20. http://dx.doi.org/10.4028/www.scientific.net/amr.516-517.1517.

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Using the finite element analysis, this work analyzed the electric field distribution of 220kV transmission steel tower with double-circuit and composite material transmission tower with the same size, and compared the electric field effect of two materials transmission tower for surroundings. And this work compared the vertical and axial electric field distribution along transmission line of the two materials transmission tower. The results indicate the composite material tower can improve the environment of electric field near the transmission lines.

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29

Yutsis, Vsevolod, Yuriy Rapoport, Volodymyr Grimalsky, Asen Grytsai, Vasyl Ivchenko, Sergei Petrishchevskii, Alla Fedorenko e Valery Krivodubskij. "ULF Activity in the Earth Environment: Penetration of Electric Field from the Near-Ground Source to the Ionosphere under Different Configurations of the Geomagnetic Field". Atmosphere 12, n. 7 (22 giugno 2021): 801. http://dx.doi.org/10.3390/atmos12070801.

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The problem with the penetration of electric fields from atmospheric near-Earth electric current sources to the ionosphere is investigated both within the dynamic simulations of the Maxwell equations in the frequency domain and within the simplified quasi-electrostatic approach. Two cases of the geomagnetic field lines are considered. The first case is the penetration of the geomagnetic field lines deeply into the magnetosphere (open field lines), whereas the second one is the return of these lines into the Earth’s surface (closed field lines). The proper boundary conditions are formulated. It is demonstrated that in the case of the open field lines the results of the dynamic simulations differ essentially from the quasi-electrostatic approach, which is not valid there. In the case of the closed field lines, the results of simulations are practically the same both within the dynamic approach and within the quasi-electrostatic one. From realistic values of the densities of atmospheric electric currents ~0.1 µA/m2, the values of the electric fields within the ionosphere F-layer may reach about 1–10 mV/m.

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Antsiferov, N. S. "Ways to Reduce Power Losses in Mining Power Supply Lines". Mining science and technology 4, n. 2 (25 agosto 2019): 150–56. http://dx.doi.org/10.17073/2500-0632-2019-2-150-156.

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Electric energy is the most common and universal form of energy. It can be produced in large quantities near energy sources, transmitted to large distances, easily distributed between consumers and converted into mechanical, thermal, and light energy. Ensuring reliable and economical quality electric energy supply to mining enterprises with the optimal use of energy resources is one of the most important tasks facing the country's energy sector. In the Russian Federation, high degree of concentration of generating capacities at power plants has been achieved. The main capacities are concentrated in power plants with installed capacity of more than 1 million kW. High importance of the electric power industry is determined by the infrastructural nature of the industry and the direct relationship between the country's economic growth and the level of its development effectiveness. One of the most pressing problems of modern electricity supply is the problem of ensuring the quality of electric energy. The main reason for the deterioration in the electricity quality is widespread non-linear loads that create non-sinusoidal currents and voltage unbalance during their operation. The voltage unbalance is most often caused by the presence of an unbalanced load. Unbalanced load currents flowing through the elements of the power supply system cause unbalanced voltage losses in them. This results in appearance of unbalanced voltages on the terminals of electric apparatus. The voltage deviations at electric apparatus overdriven phase may exceed the normally acceptable values, while the voltage deviations at electric apparatus other phases may remain within the normal limits. In addition to the deterioration of the voltage mode at electric apparatus under the unbalanced voltage conditions, the operating conditions of both the electric apparatus and all the network elements are significantly worsened, and the reliability of the electrical equipment and the power supply system as a whole decreased. The paper considers the issues of reducing the voltage losses in power supply networks by improving quality of electric power.

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Zhuang, Xiao Yun, Yong Ming Li e Jun Ma. "Investigation on the Electromagnetic Interference of Four-Circuit Transmission Lines". Advanced Materials Research 507 (aprile 2012): 106–11. http://dx.doi.org/10.4028/www.scientific.net/amr.507.106.

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In the paper the calculation of electric field and magnetic field considering the influence caused by the sag is investigated. The method to analyze the influence caused by the transmission lines sag is presented firstly. A 110 four-circuit transmission lines in Chongqing was taken as an example, the electric field and magnetic field in 2D space and 3D space were calculated respective, and comparison was conducted. Result indicate that the electric and magnetic fields obtained in 2D space has an error of 11.2% for electric field, and 7.1% for magnetic field.

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Zhao, L. B., e F. L. Liu. "Balmer-series spectral lines for hydrogen atoms in parallel magnetic and electric fields of white dwarfs". Monthly Notices of the Royal Astronomical Society 507, n. 2 (5 agosto 2021): 2283–99. http://dx.doi.org/10.1093/mnras/stab2254.

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ABSTRACT We extended the two-dimensional B-spline approach recently developed to investigate the influence of a strong electric field on atomic structures and spectra for hydrogen atoms in magnetic fields of white dwarfs. Spectral lines for hydrogen in parallel magnetic and electric fields have been calculated. Wavelengths and oscillator strengths are presented for 14 Balmer α transitions as a function of magnetic and electric fields. The magnetic and electric field strengths involved span a scope, respectively, from around 23.5 to 2350 MG, and from 0 to 108 V/m. Our calculations show that the shift of Balmer-series spectral lines induced by a strong electric field reduces as the magnetic field strength increases. The obtained energy levels, wavelengths, and oscillator strengths are compared to available results in the literature, and excellent agreement was discovered. The spectral data reported in this paper can be applied to interpret the shifts of spectral lines of hydrogen in magnetic white dwarfs due to the presence of electric fields, and to predict additional spectral lines dipole-forbidden in a pure magnetic field.

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Jiang, Yu Ze, Zhen Guang Liang e Di Wen Jiang. "Calculation of Electric Field under Overhead Lines with Complex Ground by Two Dimension Surface Charge Method". Advanced Materials Research 1070-1072 (dicembre 2014): 1563–66. http://dx.doi.org/10.4028/www.scientific.net/amr.1070-1072.1563.

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In the paper, influence of complex ground on electric field under overhead lines is studied. Two dimension surface charge method is used and complex ground is modeled with surface charges. Analytical expressions of electric potential and electric field strength produced by surface charge element are deduced. Effectiveness of the method is shown by an example with analytical result. Curve ground and sloping ground are used respectively in calculation of electric field under overhead lines. Results show influence of variation of ground height on distribution of electric field.

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Kulkarni, G. A., e W. Z. Gandhare. "Prediction of Electromagnetic Fields around High Voltage Transmission Lines". Acta Technica Jaurinensis 10, n. 1 (6 marzo 2017): 50. http://dx.doi.org/10.14513/actatechjaur.v10.n1.414.

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The electric and magnetic fields are present around the High Voltage Transmisssion Lines (HVTL) and reported to affect health of the workers working on these hotlines. The key parameter reportedly responsible for detrimental health effects, are internal induced fields in body. Induction of internal fields in different organs is heavily dependent on the external fields. Prediction of hazardous levels of external fields before measurement or in situations difficult for direct measurement will lead to identify the restrictive situations and working conditions for hotline workers. This work propose a method to model electric and magnetic field for different climbing routes using hybrid technique, formed by combining support vector machine (SVM) and neural network (NN) and also electric field and magnetic field values are predicted using NN for increase in tower height. The result shows the performance of proposed method for prediction of electric field and magnetic field for increase in tower height.

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Tarko, Rafał, Konrad Kochanowicz, Wiesław Nowak, Waldemar Szpyra e Tadeusz Wszołek. "Reduction of the Environmental Impact of Electric Field Generated by High Voltage Power Transmission Lines". Energies 14, n. 19 (6 ottobre 2021): 6388. http://dx.doi.org/10.3390/en14196388.

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The growing interest in the negative environmental impact of overhead power lines of high and extra-high voltage stems from the increasing ecological awareness of societies. Consequently, a number of respective legal restrictions have been issued and actions have been undertaken to reduce this impact, especially in the electric field of the power frequency. The aim of this paper is to analyze the possibilities of reducing the width of electric field influence zones by changing the design parameters of power lines and defining the spatial distribution of its conductors. This analysis was carried out using the developed and experimentally verified models for determining the electric field and audible noise in the power line environment. The computational models were used to analyze the width of the electric field influence zones of 400 kV lines and the noise levels at the borders of these zones. The research focused on single and double circuit 400 kV power lines. It was revealed that a reduction in electric field emissions is accompanied by an increase in noise emission. However, the analyses confirmed that the width of the electric field influence zones can be significantly reduced if the most important design and construction parameters of the line are properly selected. The obtained conclusions are valid not only for 400 kV lines, but also set directions to follow when changing the parameters of high voltage transmission lines of other rated voltages (above 100 kV).

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Vu, Tu Phan. "Calculation of electric field of HVDC transmission lines using finite element method". Science and Technology Development Journal 16, n. 4 (31 dicembre 2013): 43–52. http://dx.doi.org/10.32508/stdj.v16i4.1583.

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The HVDC transmission lines have been building in many modern countries in all over the world, and it will be an important problem of Viet Nam power transmission. The important phenomena of operation of HVDC transmission lines is corona discharge around HVDC transmission lines that is a cause to increase significantly the electric field strength over ground surface and around lines. This paper presents the investigation and calculation of the electric field strength of many models of HVDC transmission lines such as monopolar, bipolar, single- and double-circuit using the finite element method based on COMSOL MULTIPHYSICS software. The calculation results have shown the strength and shape of the electric field strength at many positions over ground level. These results are also good datum to calculate and design HVDC transmission lines of Viet Nam power transmission in the near future.

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Chen, Wenwen, Yanfei Wang, Yuchen Huang, Yongjin Chen, Shun Luo e Meiling Deng. "The impact of massive EV charging on distribution lines". Journal of Physics: Conference Series 2703, n. 1 (1 febbraio 2024): 012065. http://dx.doi.org/10.1088/1742-6596/2703/1/012065.

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Abstract The large-scale charging of electric vehicles at the same time is bound to have a large impact on the distribution network and then reduce the stability of the grid, especially during peak hours when it is easy to overload the lines. In this paper, we combine battery capacity and charging power data of electric vehicles and user usage habits to model the charging load changes of electric vehicles at different scales. The impact of charging by EV owners on network load was also analyzed through case studies. Our results have a certain practical significance for the planning of power grid lines.

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Mammadov, A. F., e A. Matsyura. "Bird collisions with power lines in Nakhchivan Autonomous Republic". Ukrainian Journal of Ecology 10, n. 1 (25 febbraio 2020): 180–85. http://dx.doi.org/10.15421/2020_29.

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The article summarizes the results of research in four selected sites (observations) on the impact of surface power lines on bird death in the area of Nakhchivan Autonomous Republic in 2016-2017. Studies show that electrical wires have a major impact on bird death during the spring migration and nesting period. We determined that 225 individual of 27 species were killed by electric shock in selected areas, while 16 individuals belonging to 3 predator bird species were exposed to this threat. Two of these species are in the World Red List. The next plot with high mortality rate was the Cananbar well - Shikhmahmud plain (2 km), although we did not make a research here for the first two months. An average mortality rate of birds here were 2.72 individuals/km. The electric poles in the selected Nakhchivan - Shikhmahmud road (4 km) consisted mainly of wooden material and were sometimes replaced with reinforced concrete. We attribute the fact that the percentage of deaths in this area is lower than other stations because of the poles are more wooden. Among the dead birds some species belonging to the Red List of the World (Falco naumanni and Coracias garrulus). As we already mentioned, beside the overhead electric wires were mainly dangerous to Ciconia ciconia, Buteo rufinus and eagles. The dead and wounded species were recorded only one to four km from the electric line. Among the most common species exposed electric shocks were: Columba livia, Merops apiaster, Corvus frugilegus, Sturnus vulgaris and Passer domesticus. A total of 3,225 birds from 26 species were killed by the private electric shock during the study, four birds could not be identified (unknown species). When looking at the process from a landscape-species perspective, bird species - those most exposed to the electric wires are: less open, open space (loos); forest landscape (fl); residential areas (ra) and less grove areas (lga).

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Polyakov, D. A., V. N. Pugach, K. I. Nikitin e I. V. Komarov. "ELECTRICAL SIGNAL ANALYSIS SYSTEM OF ELECTRIC TRANSMISSION LINES". Dynamics of Systems, Mechanisms and Machines 5, n. 3 (2017): 079–84. http://dx.doi.org/10.25206/2310-9793-2017-5-3-79-84.

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Pronichev, А. V., E. O. Soldusova e E. M. Shishkov. "ANALYSIS ELECTRIC REGIMES OF OPEN OVERHEAD TRANSMISSION LINES". Dynamics of Systems, Mechanisms and Machines 6, n. 3 (2018): 072–77. http://dx.doi.org/10.25206/2310-9793-2018-6-3-72-77.

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Mustafa, G. M., Yu A. Goryushin, S. I. Gusev, G. M. Minaev e N. A. Artaev. "Facilities for ice melting on electric transmission lines". Russian Electrical Engineering 83, n. 1 (gennaio 2012): 26–29. http://dx.doi.org/10.3103/s1068371212010105.

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Rakhmatullin, R. R., e J. N. Zatsarinnaya. "DETECTION OF ICE ON OVERHEAD ELECTRIC POWER LINES". Transactions of Academenergo 55, n. 2 (giugno 2019): 98–103. http://dx.doi.org/10.34129/2070-4755-2019-55-2-98-103.

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Pain, Jean-Christophe, Franck Gilleron, Jacques Bauche e Claire Bauche-Arnoult. "Statistics of electric-quadrupole lines in atomic spectra". Journal of Physics B: Atomic, Molecular and Optical Physics 45, n. 13 (13 giugno 2012): 135006. http://dx.doi.org/10.1088/0953-4075/45/13/135006.

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Ruhlandt, Daja, Steffen Mühle e Jörg Enderlein. "Electric field lines of relativistically moving point charges". American Journal of Physics 88, n. 1 (gennaio 2020): 5–10. http://dx.doi.org/10.1119/10.0000189.

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Ahmed, Zafar, e Aditya Nandan Savita. "Lines of force of the electric point dipole". European Journal of Physics 34, n. 2 (12 febbraio 2013): L39—L41. http://dx.doi.org/10.1088/0143-0807/34/2/l39.

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Aashish, Sandeep, e Asrarul Haque. "Average Lorentz self-force from electric field lines". European Journal of Physics 36, n. 5 (26 giugno 2015): 055012. http://dx.doi.org/10.1088/0143-0807/36/5/055012.

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Kirkham, H. "Measuring electric fields from power lines: part 1". IEEE Instrumentation and Measurement Magazine 9, n. 3 (giugno 2006): 54–56. http://dx.doi.org/10.1109/mim.2006.1637981.

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Levi, Barbara Goss. "Neutrons Cannot Encircle Lines of Electric Charge Unphased". Physics Today 43, n. 1 (gennaio 1990): 17–19. http://dx.doi.org/10.1063/1.2810394.

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Lewis, Mark K. "Federal Siting Authority for Interstate Electric Transmission Lines". Electricity Journal 14, n. 8 (ottobre 2001): 36–39. http://dx.doi.org/10.1016/s1040-6190(01)00236-6.

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Xu, Yansheng, e Renato G. Bosisio. "Goubau Ice Sensor Transitions for Electric Power Lines". Sensing and Imaging: An International Journal 10, n. 1-2 (27 marzo 2009): 31–40. http://dx.doi.org/10.1007/s11220-009-0044-z.

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