Results 81 to 90 of about 3,265 (186)

SFRA ratio test on transformers

Transformers Magazine, 2021
SFRA test is a powerful and sensitive method for assessing the mechanical and electrical integrity of the transformer core/coil assembly. The two most commonly used tests are open- and short-circuit tests. Both are used for testing the complex network of inductances, capacitances and electrical resistances and, frequently, have no difficulties in ...
openaire   +2 more sources

Афілофороїдні гриби відділення «Крейдова флора» Українського степового природного заповідника [PDF]

, 2011
The results of studying the diversity of aphyllophoroid fungi in „Kreidova flora” branch of the Ukrainian Steppe Nature Reserve of National Academy of Sciences of Ukraine (Donetsk region, Ukraine) are presented.
Акулов, О.Ю., Ординець, О.В.   +1 more
core  

Diagnóstico del devanado terciario de un autotransformador de subestación

Revista Científica de Ingeniería Energética
Este artículo presenta los resultados del Análisis de Respuesta al Barrido de Frecuencia como método de diagnóstico del devanado terciario de un autotransformador que, desde hace algún tiempo, ha estado presentando puntos calientes en la tornillería que ...
Ramón Pérez Hernández, Orestes Hernández Areu   +1 more
doaj  

Diagnosis of Stator Inter-Turn Short Circuit Faults in Synchronous Machines Based on SFRA and MTST

Energies
As a key component of the power system, the good or bad conditions of synchronous machines will directly affect the stable supply of electric energy. The inter-turn short fault of the stator is one of the main dangers to the synchronous machine and is ...
Junsheng Ding, Zhongyong Zhao
doaj   +1 more source

Aplicación de la técnica del barrido de frecuencia, en el diagnóstico de los devanados de dos autotransformadores de potencia

Revista Científica de Ingeniería Energética
Se describe la aplicación del análisis de respuesta al barrido de frecuencia (SFRA) como herramienta de diagnóstico de fallas en dos autotransformadores de una subestación.
Ramón Pérez Hernández, Orestes Hernández Areu   +1 more
doaj  

Electrical interferences in SFRA measurements

Transformers Magazine, 2017
Power transformers are still among the most costly and critical components in an electrical power network. Thus, the importance of a reliable condition assessment of these assets increases due to the aging of transformer fleets. The Sweep Frequency Response Analysis (SFRA) has become an important standard test and provides comprehensive information ...
Raedler, Michael, Uhrig, Stephanie, Velasquez Contreras, Juan L.   +2 more
openaire   +1 more source

Effects of Glucomannan Supplementation on Type II Diabetes Mellitus in Humans: A Meta-Analysis. [PDF]

Nutrients, 2023
Zhang Z, Zhang Y, Tao X, Wang Y, Rao B, Shi H.   +5 more
europepmc   +1 more source

Robust Reform: Implementing robust institutional arrangements to achieve efficient water use in Australia [PDF]

The focus of this report is on implementing institutional arrangements for the efficient allocation and management of water. Water is an input into human use including economic production and recreation activities that generate many externalities.
Jim McColl, Mike Young
core  

Comparison of conventional SFRA with intelligent SFRA

International Journal of Advanced Technology and Engineering Exploration, 2017
Richa Kapoor, Himanshu Vijay
openaire   +1 more source

Assessing moisture content in XLPE power cables using frequency-dependent tangent delta measurements

Materials Research Express
The 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, Sanjay Lakshminarayanan, Madhu Palati, Suresh Haleyur Lakshmegowda, Mahipal Bukya   +4 more
doaj   +1 more source