Results 41 to 50 of about 18,082 (164)

Surface Charge Transport Characteristics of ZnO/Silicone Rubber Composites Under Impulse Superimposed on DC Voltage

IEEE Access, 2019
Composites with nonlinear conductivity have been applied to modify the direct current (dc) electrical field distribution and accelerate the space charge dissipation in polymeric insulation.
Zhonglei Li, Zhuoran Yang, Boxue Du
doaj   +1 more source

Portable High Voltage Impulse Generator

Ingeniería e Investigación, 2011
This paper presents a portable high voltage impulse generator which was designed and built with insulation up to 20 kV. This design was based on previous work in which simulation software for standard waves was developed.
S. Gómez, M. P. Buitrago, F. A. Roldán
doaj  

The effect of lightning impulse characteristics and line arrester to the lightning protection performance on 150 kV overhead lines: ATP-EMTP computational approach

Journal of Mechatronics, Electrical Power, and Vehicular Technology, 2019
This simulation study presents the effect of lightning strikes on the performance of arresters at 150 kV overhead lines. Lightning strikes have several parameters that affect the performance of line arresters (LA), namely lightning charge, and impulse ...
Fri Murdiya, Febrizal Febrizal, Cecilia Stevany, Havel Alindo Sano, Firdaus Firdaus   +4 more
doaj   +1 more source

Impact of Electrode Distance in a Quasi-Uniform Model Electrode System on Lightning Impulse Breakdown Voltage in Various Insulating Liquids

Energies
This study presents findings on the influence of gap length distance on the lightning impulse breakdown voltage of three dielectric liquids of different chemical origins.
Wiktor Kunikowski, Pawel Rozga, Bartlomiej Pasternak, Jakub Staniewski, Filip Stuchala, Konrad Strzelecki   +5 more
doaj   +1 more source

Impacts of Bipolar Impulse Parameters on the PDIV of Random-Wound Inverted-Fed Motor Insulation

Energies
The detection of Partial Discharge Inception Voltage (PDIV) is vital for evaluating the insulation performance of random-wound inverter-fed motor stators.
Junsheng Chen, Peng Wang
doaj   +1 more source

Comparison of Aging Effect of Ester Liquids and Mineral Oil in Semi-Uniform Field Geometry under Lightning Impulse Voltage and Standard Compliant AC Voltage Testing

Energies
This study examines and compares the breakdown and aging properties of five insulating liquids. Additionally, the influence of different voltage polarities on these properties was analyzed to investigate the effect of aging on polarity behavior under ...
Sabrina Krügel, Ronald Plath
doaj   +1 more source

Effect of the electrode material on the breakdown voltage and space charge distribution of propylene carbonate under impulse voltage

AIP Advances, 2016
This paper reports three types of electrode materials (copper, aluminum, and stainless steel) that are used to measure the impulse breakdown voltage of propylene carbonate.
Qing Yang, Yang Jin, Wenxia Sima, Mengna Liu   +3 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

Experimental Study on Lightning Transient Overvoltage Damage of Interface Devices of High-speed Railway Signal Equipment

工程科学与技术
This article proposes a method for detecting and determining the lightning overvoltage damage in communication interfaces of high-speed railway signal equipment, which is an optimization and improvement of the current lightning test and detection methods
Zhoulong WANG, Jinpeng XU, Shaoyun JIN, Ruikun MAI   +3 more
doaj  

Failure Characteristics and Mechanism of Nano-Modified Oil-Impregnated Paper Subjected to Repeated Impulse Voltage. [PDF]

Nanomaterials (Basel), 2018
Sun P, Sima W, Zhang D, Jiang X, Zhang H, Yin Z.   +5 more
europepmc   +1 more source