Results 71 to 80 of about 4,585 (188)

The Influence of Collusion on Price Changes: New Evidence from Major Cartel Cases [PDF]

open access: yes
In this paper, we compare the distribution of price changes between collusive and noncollusive periods for ten major cartels. The first moments focus on previous research.
Alexander Geist   +2 more
core  

Application of SCNGO-VMD-SVM in Identification of Gas Insulated Switchgear Partial Discharge

open access: yesIEEE Access
Partial discharge (PD) is one of the main reasons of insulation deterioration in gas insulated switchgear (GIS). How to efficiently and accurately identify PD signals is an important guarantee for the stable operation of GIS.
Wei Sun, Hongzhong Ma, Sihan Wang
doaj   +1 more source

Recurrent Neural Network for Partial Discharge Diagnosis in Gas-Insulated Switchgear

open access: yesEnergies, 2018
The analysis of partial discharge (PD) signals has been identified as a standard diagnostic tool for monitoring the condition of different electrical apparatuses.
Minh-Tuan Nguyen   +3 more
doaj   +1 more source

Rough set theory applied to pattern recognition of partial discharge in noise affected cable data [PDF]

open access: yes, 2016
This paper presents an effective, Rough Set (RS) based, pattern recognition method for rejecting interference signals and recognising Partial Discharge (PD) signals from different sources.
Hepburn, Donald M.   +8 more
core   +4 more sources

Advanced electric propulsion system concept for electric vehicles. Addendum 1: Voltage considerations [PDF]

open access: yes
The two electric vehicle propulsion systems that best met cost and performance goals were examined to assess the effect of battery pack voltage on system performance and cost.
Forbes, F. E., Raynard, A. E.
core   +1 more source

Characteristics investigation of R407C in high voltage applications as an alternative to SF6

open access: yesResults in Engineering
The concept of life without electrical power is not possible. All the industrial, domestic zones etc., requires power to operate, which is transmitted by means of overhead high voltage transmission lines from generating stations to sub-stations.
Imad M. Khattak   +7 more
doaj   +1 more source

Application of Optical Fiber Distributed Sensing System in Substation Maintenance

open access: yesGuangtongxin yanjiu, 2023
During daily operation of Substation, if Gas Insulated Switchgear (GIS)equipment breaks down, it will lead to the suspension of substation power supply, and national production and life cannot be guaranteed.
BAI Bin   +5 more
doaj  

Simulation and Characterization of Micro-Discharge Phenomena Induced by Glitch Micro-Defects on an Insulated Pull Rod Surface

open access: yesEnergies
The reliability of GIS (gas-insulated switchgear) circuit breakers significantly depends on the condition of the insulated pull rods, with micro-defects on their surface posing a potential risk for micro-discharges and breakdown incidents. Experimentally
Shu Niu   +8 more
doaj   +1 more source

Studi Karakteristik Tegangan Tembus DC Polaritas Positif pada Gas Nitrogen (N2) [PDF]

open access: yes, 2017
Insulation of Sulfur hexafluoride (SF6) gas, nitrogen (N2) gas and Carbon Dioxide (CO2) gas usually used in circuit breaker. Sulfur hexafluoride (SF6) gas is widely used in high-voltage system.
Murdiya, F. '. (Fri)   +1 more
core  

Stealthy Deception Attacks Against SCADA Systems

open access: yes, 2017
SCADA protocols for Industrial Control Systems (ICS) are vulnerable to network attacks such as session hijacking. Hence, research focuses on network anomaly detection based on meta--data (message sizes, timing, command sequence), or on the state values ...
A Kleinmann   +12 more
core   +1 more source

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