Results 21 to 30 of about 449 (110)
Science and Technology of Nuclear Installations, Volume 2016, Issue 1, 2016., 2016 There is a large water storage tank installed at the top of containment of AP1000, which can supply the passive cooling. In the extreme condition, sloshing of the free surface in the tank may impact on the roof under long‐period earthquake. For the safety assessment of structure, it is necessary to calculate the impact pressure caused by water sloshing.
Daogang Lu +4 more
wiley +1 more source
Frequency and time fault diagnosis methods of power transformers
Measurement Science Review, 2018 The authors describe experimental and theoretical analyses of faults of power transformer winding. Faults were caused by mechanical effect of short-circuit currents. Measurements of transformer were carried out in high-voltage laboratory.
Gutten Miroslav +5 more
doaj +1 more source
Ingenius: Revista de Ciencia y Tecnología, 2011 La espectroscopía es una técnica mediante la cual podemos observar gráficamente la interacción entre materia y energía radiada, ya sea en función de la longitud de onda o la frecuencia, lo que nos permite aislar e identificar la estructura constructiva ...
Néstor Xavier Maya Izurieta +1 more
doaj +1 more source
International Journal of Electrical Power & Energy Systems, 2014 Abstract This paper presents how interpretation of Sweep Frequency Response Analysis (SFRA) traces can be done for the open circuit and short circuit winding faults on the 10 kV A power transformer. The power transformer of rating 10 kV A, 11,000 V/440 V, 3-phase, 50 Hz, Dyn11 has been specially developed in-house for carrying out SFRA testing by ...
Akshay A. Pandya, B.R. Parekh
openaire +1 more source
IOSR Journal of Electrical and Electronics Engineering, 2014 This paper presents how multiple winding faults can be detected by Sweep Frequency Response Analysis (SFRA). The test methods used by the authors for presenting the results are described. The Short Circuited Turns Fault on HV "V" phase winding and Earth Fault on LV "V" phase winding have been practically simulated simultaneously on the 10 KVA, 11000 V /
Akshay A. Pandya, Dr. B. R. Parekh
openaire +1 more source
Feature Analysis of Numerical Calculated Data from Sweep Frequency Analysis (SFRA) Traces Using Self Organizing Maps [PDF]
, 2014 This paper presents a comprehensive investigation of the Self Organizing Map (SOM) classification process of good and defective power distribution transformers.
Ab Ghani, Sharin +5 more
core +1 more source
FAULT DETECTION USING FRA IN ORDER TO IMPROVE THE AGING MODEL OF POWER TRANSFORMER [PDF]
, 2020 Power transformers are constantly exposed to mechanical, thermal and electrical stresses during operation. In this paper, the authors propose an improved aging model of power transformers by adding the impact of mechanical deteriorations.
Ilić, Denis +2 more
core +2 more sources
Sweep frequency response analysis of three-phase induction motors using high frequency circuit model
e-Prime: Advances in Electrical Engineering, Electronics and EnergyThree-phase induction motor (TPIM) is one of the most important and expensive component in many industries. If a failure happens in service, the impact can be far reaching. Resulting in prolonged downtimes and expensive repairs.
Rizwanullah Khan +4 more
doaj +1 more source
Investigation of transformer failure in Indonesia
MATEC Web of Conferences, 2018 Transformer failure investigation is important to obtain necessary actions which prevent similar failure from happening in the future. An investigation was conducted upon the failure of a transformer in Indonesia which damaged substation apparatuses ...
Harsono Brian Bramantyo S.D.A. +3 more
doaj +1 more source
EnergiesIn this study, we discussed how the increasing demand for electrical energy results in higher loads on transformers, creating the need for more effective testing and maintenance methods.
Hakan Çuhadaroğlu, Yılmaz Uyaroğlu
doaj +1 more source