Results 261 to 270 of about 507,672 (308)

The "arc killer": the internal fault suppressor

IET Conference Publications, 2009
This paper describes the Arc Killer device. It can detect and suppress an internal arc fault on a secondary distribution switchgear in less than 125 ms. The consequences and the damages due to an internal arc fault are then reduced to the minimum.
D. Piccoz, C. Preve, F. Buffa, P. Grosjean   +3 more
openaire   +1 more source

Research on Power Capacitor Internal Fault Criterion

2014 Fifth International Conference on Intelligent Systems Design and Engineering Applications, 2014
Power capacitor device is a widely used reactive power compensation equipment in power transmission and distribution system which can easily have internal fault and therefore affects the safe operation of the power system. This paper studies the internal structure of the power capacitor and the possible fault of the internal elements, then establishes ...
Chen Feng, Jiang Daozhuo, Fan Yu, Gu Hongjie   +3 more
openaire   +1 more source

Internal Fault Characteristics of Gas-Insulated Transformers

Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems, 1959
Recently developed gas-insulated transformers are taking a prominent position in a field where existing apparatus has a long record of reliable and almost faultless service. The outstanding position of the gas-insulated transformer is due to some fundamental differences between the gases and liquids that are used for the cooling and insulation of ...
G. Camilli, L. G. Littlejohn, W. A. Wooldridge   +2 more
openaire   +1 more source

Internal fault detection techniques for power transformers

Applied Soft Computing, 2011
This paper presents the methodologies for incipient fault detection in power transformers both off-line and on-line. An artificial neural network is used to detect faults off-line with dissolved gas analysis reports of transformers and whereas wavelet transforms are being used for on-line fault detection.
Narri Yadaiah, Nagireddy Ravi
openaire   +1 more source

A simple method to detect internal and external short-circuit faults, classify and locate different internal faults in transformers

Electrical Engineering, 2020
In new power systems, transformer monitoring and on-time detection of internal faults in power transformers are of great importance because if these faults are not identified on-time, the lifetime of the transformer might be reduced, the transformer might be completely disconnected, and network reliability might decrease. In this paper, a new method is
Hossein Ahmadi, Behrooz Vahidi, Amin Foroughi Nematollahi   +2 more
openaire   +1 more source

Simulation of internal faults in synchronous generators

IEEE Transactions on Energy Conversion, 1999
An internal fault in the armature winding of a synchronous generator occurs due to the breakdown of the winding insulation. In this paper, a method for simulating internal faults in synchronous generators, using direct phase quantities, is described. Simulation results showing the fault currents, during a single phase to ground fault and a two phase to
A.I. Megahed, O.P. Malik
openaire   +1 more source

Internal fault classification using Artificial Neural Network

2010 4th International Power Engineering and Optimization Conference (PEOCO), 2010
The main objective of this project is to create an intelligent model using image processing techniques in order to categorize the internal fault to four categories, which are low, intermediate, medium and high. Sample of internal fault location are captured using infrared thermography camera in which the RGB color image are stored and processed using ...
Mohd Anuar Shafi'i, Noraliza Hamzah
openaire   +1 more source

Internal fault currents in A-C motors

Electrical Engineering, 1956
VARIOUS TYPES OF PROTECTIVE DEVICES, such as relays, fuses, and circuit breakers, are used to provide a-c-motor fault protection. The effectiveness of these devices in protecting motors is, in most cases, dependent on the magnitude of the fault current. A general answer to this question of the magnitude of fault currents under different conditions of a-
openaire   +1 more source

Induction Motor Internal and External Fault Detection

2019
Induction motors are extensively used motor type for various industrial applications for the reason that they are robust, simple in structure, and efficient. On the other hand, induction motors are prone to different faults during their lifetime due to hostile environments.
Kamalpreet Singh, Ruhul Amin Choudhury, null Tanya   +2 more
openaire   +1 more source

Simulation of transformer internal faults

2020
This paper is based on the techniques of modeling and simulating transformer internal faults. The modeling of turn to turn and turn to earth fault is objective of this study. The detailed mathematical formulation of internal faults is developed by using Transmission Line Method (TLM).
openaire   +1 more source