Results 11 to 20 of about 1,692 (69)

High current field test of impulse transient characteristics of substation grounding grid

The Journal of Engineering, 2018
It is significant to research the impulse characteristics of substation grounding grid for its optimal design and safe and stable operation. In order to obtain the impulse transient characteristics of substation grounding grid under lightning impulse ...
Xuefang Tong, Xiaohui Dong, Bo Tan
doaj   +1 more source

Effect of End Plates on the Performance of an Impulse Turbine for Wave Energy Conversion

Journal of Fluid Science and Technology, 2008
The objective of this paper is to present the effect of end plate on the performances of the impulse turbine for wave energy conversion by experimental investigation.
Toshiaki SETOGUCHI, Manabu TAKAO, Kenji KANEKO, Shuichi NAGATA, Kazutaka TOYOTA   +4 more
doaj   +1 more source

Impulse Characteristics of Various Soil-Enhancement Material Mixtures

Applied Sciences
Many studies have demonstrated that a reduction in ground impedance value occurs under high-impulse current magnitudes, due to the ionisation process in soil.
Fazlul Aman, Usman Muhammad, Normiza Mohamad Nor, Haziah Abdul Hamid   +3 more
doaj   +1 more source

Electrical Tree Initiation Properties in Cross-Linked Polyethylene Under DC-Impulse Composite Voltages

IEEE Access, 2018
DC cables may be subjected to impulse overvoltage during operation, which may cause electrical tree inside the cable insulation. So, it is necessary to investigate the influence of impulse voltage on the insulation of dc cable.
Hechen Liu, Yanda Li, Yunpeng Liu, Mingjia Zhang, Xiaobin Xu, Aijing Liu   +5 more
doaj   +1 more source

Effect of Enhancement Material on the Performance of Ground Electrodes Under Impulse Conditions

IEEE Access
Among the factors that affect the soil resistivity is the chemical content in soil, where the ionic conduction is expectedly increased and the soil resistivity is reduced.
Usman Muhammad, Nurul Nadia Ahmad, Normiza Mohamad Nor, Fazlul Aman   +3 more
doaj   +1 more source

Influence of Different Energy Supply Methods on Performance of Ablative Pulsed Plasma Thrusters

Frontiers in Energy Research, 2021
For a certain configuration of ablative pulsed plasma thruster, changing the initial energy is an effective way to optimize the performance of the thruster.
Rui Zhang, Rui Zhang, Wenxiong Xi, Wenxiong Xi, Qiang Huang   +4 more
doaj   +1 more source

Impulse Characteristics of Soil Treated with Enhancement Materials and Various Moisture Contents

Applied Sciences
Due to the high mineral contents of additives and enhancement materials (EMs), EMs have become popular in treating soil, which expectedly improves the electrical characteristics of soil.
Usman Muhammad, Fazlul Aman, Normiza Mohamad Nor   +2 more
doaj   +1 more source

Investigations on the Performance of a New Grounding Device with Spike Rods under High Magnitude Current Conditions

Energies, 2019
In many publications, the characteristics of practical earthing systems were investigated under conditions involving fast-impulse currents of different magnitudes by field measurements.
Abdul Wali Abdul Ali, Nurul Nadia Ahmad, Normiza Mohamad Nor, Muhd Shahirad Reffin, Syarifah Amanina Syed Abdullah   +4 more
doaj   +1 more source

Comprehensive evaluation of corroded grounding electrodes considering the impulse characteristics

Frontiers in Materials, 2023
The grounding electrodes are buried in a harsh soil environment, which will cause corrosion. Corroded grounding electrodes directly affect the safe and stable operation of the power system.
Xuemeng Wang, Lan Xiong, Zhanlong Zhang, Yihua Dan, Jun Deng   +4 more
doaj   +1 more source

Performance Prediction of OWC Type Small Size Wave Power Device with Impulse Turbine

Journal of Fluid Science and Technology, 2008
This paper investigates a small size wave power device with an impulse turbine installed in the breakwater near Niigata Port, Japan. The device consists of an air chamber, a turbine, a generator and pressure-relief valves.
Masami SUZUKI, Manabu TAKAO, Eiji SATOH, Shuichi NAGATA, Kazutaka TOYOTA, Toshiaki SETOGUCHI   +5 more
doaj   +1 more source