MECHANICAL CONDITION ASSESSMENT OF TNB IN-SERVICE DISTRIBUTION TRANSFORMERS USING SWEEP FREQUENCY RESPONSE ANALYSIS (SFRA) [PDF]
, 2012 Distribution transformers in TNB (Tenaga Nasional Berhad) are exposed to the thermal and electrical stresses. Those stresses are effecting to the main mechanical active parts in transformer such as core and winding.
Ab Ghani, Sharin +4 more
core
Improving the Power System safety in Hospitals by means of periodical SFRA tests on Medical Isolation Transformers [PDF]
, 2020 The paper has the main aim of demonstrating a possible use of the well consolidated monitoring SFRA (Sweep Frequency Response Analysis) technique for preventive maintenance procedure applied to isolation medical transformers operating in hospitals’ group
A. Fioravanti +4 more
core
Assessing moisture content in XLPE power cables using frequency-dependent tangent delta measurements
Materials Research ExpressThe reliability of cross-linked polyethylene (XLPE)-insulated power cables, mostly used for electricity distribution and transmission in urban areas, is often compromised due to the lack of effective condition-based monitoring systems.
Babu Naik Gugulothu +4 more
doaj +1 more source
Performing reliable and reproducible frequency response measurements on power transformers [PDF]
, 2018 The Sweep Frequency Response Analysis (SFRA) has become a standard method to assess the mechanical and electrical integrity of the power transformer’s active part.
Michael RÄDLER, Stephanie UHRIG
core +1 more source
Diagnostic methods of frequency response analysis for power transformer winding a review [PDF]
, 2016 : Monitoring and diagnosis of power transformers in power systems have been investigated and discussed for the past decades. Earlier detect power transformer winding failures is recommended for both manufacturing process and also for power system ...
Nicolae, Dan-Valentin, Nnachi, G. U.
core +3 more sources
SWEEP FREQUENCY RESPONSE ANALYSIS (SFRA) AN APPROACH TO DETECT HIDDEN TRANSFORMER FAULTS [PDF]
, 2020 : Sweep frequency response analysis is a major advance in transformer condition analysis. Frequency response is performed by applying a low voltage signal of varying frequencies to the transformer windings and measuring both the input and output signals.
Akshay A Pandya, B R Parekh, PROF.) D R
core
Understanding SFRA Results using Transformer Model with Simulated Faults [PDF]
, 2013 Sweep Frequency Response Analysis (SFRA) is well known power transformer diagnostics device which capable on detected faults/changes either electrical or mechanical.
Ab Ghani, Sharin +3 more
core
Assessment of transformer health index using different model [PDF]
, 2017 Transformer failures lead to interruption of power supply. Therefore, asset management is important to monitor the efficient functioning of transformers.
Azis, Norhafiz +4 more
core
Sweep Frequency Response Analysis for Assessment Deformation Core at Power Transformer [PDF]
SFRA (Sweep Frequency Response Analysis) is a transportation test where one of the purposes of this test is to ensure that the core of the power transformer does not shift due to the journey from the factory to the field. The SFRA testing is divided into
Dharmanto, Asep +3 more
core +2 more sources
A review of transformer FRA measurement and diagnosis techniques [PDF]
, 2023 Frequency Response Analysis (FRA) is a successful technique to detect mechanical damage in power transformers with greater sensitivity than other measurements.
Ekanayake, Chandima +8 more
core +1 more source