Results 31 to 40 of about 1,951 (227)

Reduction Reactive Power and Collapse Voltage Using Series Capacitors Compensation in Sudden Change Loads of Transmission Lines [PDF]

open access: yesEngineering and Technology Journal, 2012
The continuous increase of disturbances on the interconnected electric power system resulting in its inability to reliably meet demands. This paper presents an application of a series capacitor compensation in transmission line and shunt reactors ...
Hussein Thani Rishag
doaj   +1 more source

Field-enhanced bulk conductivity and resistive-switching in Ca-doped BiFeO3 ceramics [PDF]

open access: yes, 2014
The bulk conductivity at room temperature of Ca-doped BiFeO3 ceramics is p-type and increases reversibly by up to 3 orders of magnitude under the influence of a small dc bias voltage in the range B3 to 20 V mm1 .
Beltrán Mir, Héctor   +4 more
core   +1 more source

Investigations into Recycling Zinc from Used Metal Oxide Varistors via pH Selective Leaching: Characterization, Leaching, and Residue Analysis

open access: yesThe Scientific World Journal, 2015
Metal oxide varistors (MOVs) are a type of resistor with significantly nonlinear current-voltage characteristics commonly used in power lines to protect against overvoltages.
Toni Gutknecht   +4 more
doaj   +1 more source

Two basic ways to realise DC circuit breakers

open access: yesThe Journal of Engineering, 2019
As a key element of the DC grid, the technology of DC circuit breakers (DCCBs) still have difficulty to be widely used due to its large cost and volume. This paper studies the basic principle and its realisation methods for DCCBs.
Zheng Xu   +3 more
doaj   +1 more source

Influence of UHV GIL access on transient recovery voltage of circuit breaker

open access: yes电力工程技术, 2022
The access of ultra high voltage (UHV) gas-insulated transmission line (GIL) affects both the transient recovery voltage (TRV) amplitude and the rate of rise of TRV (RRRV) of circuit breakers,which may endanger the breaking capacity of circuit breakers ...
SUN Yi   +5 more
doaj   +1 more source

Grain Boundary Space Charge Engineering of Solid Oxide Electrolytes: Model Thin Film Study

open access: yesAdvanced Functional Materials, Volume 36, Issue 14, 16 February 2026.
This study demonstrates unprecedented control of grain boundary electrical properties in solid electrolytes. Selective diffusion of cations through grain boundaries in thin films enables 12 orders of magnitude variation in ionic resistance, proving that systematic chemical modification of grain boundary electrical properties is feasible.
Thomas Defferriere   +5 more
wiley   +1 more source

dv/dt Dependence in metal oxide varistors

open access: yesElectronics Letters, 1986
A dv/dt dependence has been observed in metal oxide varis-tors during impulse testing. A lossy dielectric model which provides a qualitative explanation of this behaviour can also be used to account for current overshoot.
de Cogan, D., Leesen, M.
openaire   +2 more sources

Surface Flashover in 50 Years: III. Extreme Environments and Industrial Challenges

open access: yesHigh Voltage, Volume 11, Issue 1, Page 100-142, February 2026.
ABSTRACT Modern high‐voltage electrical equipment operates in complex environments where surface conditions are subjected to multifaceted influences from electric fields, thermal gradients, contaminants, irradiation and other extreme environmental factors.
Zhen Li   +6 more
wiley   +1 more source

Metal Oxide ZnO-Based Varistor Ceramics [PDF]

open access: yes, 2011
A varistor is a type of resistor with a significantly non-ohmic current-voltage characteristic. The name is a portmanteau of variable resistor, which is misleading since it is not continuously user-variable like a potentiometer or rheostat and is capacitor rather than resistor at low field. The most famous type of varistor is metal oxide varistor (MOV),
openaire   +2 more sources

Flexural performance of textile fine grained mortar containing risk husk ash as a partial cement replacement in reinforced concrete beams [PDF]

open access: yes, 2018
External strengthening of RC beam become a popular method to reduce deterioration. Due to highest demanding on external strengthening, a new innovation was introduced called as textile fine grained mortar (TFGM).
Mohammad, Noor Shuhada
core  

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