Results 261 to 270 of about 749,140 (312)
Some of the next articles are maybe not open access.
Grid Impedance Frequency Response Measurements Using Pseudo-Random Impulse Sequence Perturbation
2019 9th International Conference on Power and Energy Systems (ICPES), 2019The frequency-domain properties of supply network impedance are of increasing importance for applications such as grid-connected inverters, especially with reference to aspects such as the harmonic distortion specifications associated with grid compliance criteria.
Fredrick M. Mwaniki +1 more
openaire +2 more sources
Research on Field Test of Impulse Grounding Impedance for Small Substation
2018 International Conference on Smart Grid and Electrical Automation (ICSGEA), 2018In this paper, application of a portable instrument to obtain impulse grounding impedance (IGI) characteristics for grounding grid of small substation is introduced. The test currents of 8/20 µs, 10/350 µs and 30/80 µs were chosen as the injection signal sources to the grounding grid respectively with simultaneous measurement of the response ...
Si Wen-Rong +5 more
openaire +2 more sources
General Formulas for Lightning Impulse Impedance of Horizontal and Vertical Grounding Electrodes
IEEE Transactions on Power Delivery, 2021Voltage drop developed between the grounding electrode under lightning current and distant neutral ground determines the protection efficiency. The peak value of such voltage can be computed from known impulse impedance and current peak value.
L. Grcev, B. Markovski, M. Todorovski
semanticscholar +1 more source
IEEE Transactions on Power Delivery, 2021
The impulse grounding performance of distribution lines tower is the key factor to lightning protection. Few field high-current impulse test researches are conducted on distribution line tower.
Jian Xue +6 more
semanticscholar +1 more source
The impulse grounding performance of distribution lines tower is the key factor to lightning protection. Few field high-current impulse test researches are conducted on distribution line tower.
Jian Xue +6 more
semanticscholar +1 more source
Impulse Impedance and Effective Area of Grounding Grids
IEEE Transactions on Power Delivery, 2021High values and uneven distribution of the transient ground potential rise (TGPR) at grounding grid conductors in cases of lightning can disrupt the system safety and reliability. To assess the transient performance of grounding grids under lightning currents, a parametric analysis was performed with a computer simulation of 13,978 cases of time-domain
Leonid Grcev, Blagoja Markovski
openaire +1 more source
Impulse Impedance and Effective Area of Grounding Grids
IEEE Transactions on Power Delivery, 2020High values and uneven distribution of the transient ground potential rise (TGPR) at grounding grid conductors in cases of lightning can disrupt the system safety and reliability.
L. Grcev, B. Markovski
semanticscholar +1 more source
International Conferences on Software Engineering and Information Management, 2021
The distribution system is one of the most important part in the power system electric supply. Long-distance topology made the distribution system is difficult to restore when the fault happened, because information about the fault location mostly ...
Muh Budi R Widodo +3 more
semanticscholar +1 more source
The distribution system is one of the most important part in the power system electric supply. Long-distance topology made the distribution system is difficult to restore when the fault happened, because information about the fault location mostly ...
Muh Budi R Widodo +3 more
semanticscholar +1 more source
IEEE transactions on electromagnetic compatibility (Print), 2018
Based on measured and simulated results, the features of the first-return-stroke impulse grounding impedance are analyzed to show that, in a vast class of lightning protection applications, using this parameter yields results very similar to those ...
S. Visacro
semanticscholar +1 more source
Based on measured and simulated results, the features of the first-return-stroke impulse grounding impedance are analyzed to show that, in a vast class of lightning protection applications, using this parameter yields results very similar to those ...
S. Visacro
semanticscholar +1 more source
2019 International Symposium on Lightning Protection (XV SIPDA), 2019
This paper evaluates the representativity of median impulse impedance in lightning response of tower-footing electrodes, for impulses characteristic of first strokes.
Kamila Costa +4 more
semanticscholar +1 more source
This paper evaluates the representativity of median impulse impedance in lightning response of tower-footing electrodes, for impulses characteristic of first strokes.
Kamila Costa +4 more
semanticscholar +1 more source
Characterization of human joint impedance during impulsive motion
Journal of Electromyography and Kinesiology, 1993The objective of the present work is to make use of the limited existing information on human joint impedance and to supplement and refine it synthetically, by means of simulation. A modular concept was applied to the construction of a joint model. The basic module was an individual revolute joint which was constrained by four resistive elements.
M, Batman, R, Seliktar
openaire +2 more sources