Depolarization Ratio Index (DRI) as alternative method in identifying oil-filled transformer internal faults
Sign Up to like & getrecommendations! Published in 2021 at "Electrical Engineering"
DOI: 10.1007/s00202-021-01260-2
Abstract: Dissolved gas analysis is the most common and well-established method used in identifying internal faults of power transformers. However, an onsite analysis using this method accuracy still need to be improved while the laboratories analysis… read more here.
Keywords: depolarization; transformer; method; oil ... See more keywords
Tuning of ferrimagnetic nature and hyperfine interaction of Ni2+ doped cobalt ferrite nanoparticles for power transformer applications
Sign Up to like & getrecommendations! Published in 2018 at "Ceramics International"
DOI: 10.1016/j.ceramint.2018.02.129
Abstract: Abstract Ferrites may contain single domain particles which gets converted into super-paramagnetic state near critical size. To explore the existence of these characteristic feature of ferrites, we have performed magnetization(M-H loop) and Mossbauer spectroscopic studies… read more here.
Keywords: power transformer; magnetization; field; tuning ferrimagnetic ... See more keywords
Power Transformer Fault Diagnosis Based on DGA Using a Convolutional Neural Network With Noise in Measurements
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Access"
DOI: 10.1109/access.2021.3102415
Abstract: Fault type diagnosis is a very important tool to maintain the continuity of power transformer operation. Dissolved gas analysis (DGA) is one of the most effective and widely used techniques for predicting the power transformer… read more here.
Keywords: transformer fault; power transformer; model; noise ... See more keywords
A Power Transformer Fault Diagnosis Method-Based Hybrid Improved Seagull Optimization Algorithm and Support Vector Machine
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2021.3127164
Abstract: The method of Support Vector Machine (SVM) based on Dissolved Gas Analysis (DGA) has been studied in the field of power transformer fault diagnosis. However, there are still some shortcomings, such as the fuzzy boundaries… read more here.
Keywords: power transformer; optimization; method; diagnosis ... See more keywords
A High Sensitivity Optical Fiber Interferometer Sensor for Acoustic Emission Detection of Partial Discharge in Power Transformer
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Sensors Journal"
DOI: 10.1109/jsen.2019.2951613
Abstract: We propose a Michelson ultrasonic sensing system for detecting the acoustic emission generated by the partial discharge in power transformer. In order to guide the sensor head design in the sensing system for high sensitivity,… read more here.
Keywords: system; partial discharge; power transformer; sensitivity ... See more keywords
Arrangement Optimization of the Superconducting Pulsed Power Transformer of Inductive Pulsed Power Supply
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Applied Superconductivity"
DOI: 10.1109/tasc.2018.2882246
Abstract: High-temperature superconducting pulsed power transformer (HTSPPT) is an important component of superconducting pulsed power supply. Six superconducting coils and four normal conducting coils have been designed and manufactured in our previous work. The six superconducting… read more here.
Keywords: power supply; pulsed power; power transformer; power ... See more keywords
Numerical analysis of the hot-spot temperature of a power transformer with alternative dielectric liquids
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Dielectrics and Electrical Insulation"
DOI: 10.1109/tdei.2017.006228
Abstract: The assessment of two vegetal oils as coolant in Low Voltage Winding of a power transformer with zigzag cooling have been analyzed. These dielectric fluids cooling performance has been compared with a typical mineral oil.… read more here.
Keywords: power transformer; spot; hot spot; spot temperature ... See more keywords
Characteristics of Mineral Oil-based Nanofluids for Power Transformer Application
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Electrical and Computer Engineering"
DOI: 10.11591/ijece.v7i3.pp1530-1537
Abstract: Trends in the field of nanomaterial-based transformer oil show most of the conducted works have focused only on the transformer oil-based nanofluids but limited studies on the stability of transformer oil-based nanofluids. Since mineral oil-based… read more here.
Keywords: oil based; transformer oil; based nanofluids; mineral oil ... See more keywords
Experimental investigation on vegetative oils under accelerated thermal ageing against their dielectric strength
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Electrical and Computer Engineering"
DOI: 10.11591/ijece.v7i3.pp1588-1593
Abstract: Insulation is one of the most important parts in high voltage apparatus such as power transformer. Most power transformer use liquid insulation material, known as power transformer oil. Petroleum-based oil so called mineral oil has… read more here.
Keywords: strength; power transformer; dielectric strength; oil ... See more keywords
Acoustic characteristic analysis of power transformers in urban communities based on a combined finite and boundary element method
Sign Up to like & getrecommendations! Published in 2019 at "Indoor and Built Environment"
DOI: 10.1177/1420326x19857452
Abstract: Power transformers in substations are common sources of noise in residential areas of neighbourhoods. A quantified and visualized analysis of the power transformer acoustic characteristics is a prerequisite for the suppression of audible noise from… read more here.
Keywords: method; power transformer; power; power transformers ... See more keywords
A New Algorithm for Three-Phase Power Transformer Differential Protection Considering Effect of Ultra-Saturation Phenomenon Based on Discrete Wavelet Transform
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Emerging Electric Power Systems"
DOI: 10.1515/ijeeps-2017-0233
Abstract: Abstract One of transient phenomena that lead to the false trip of the power transformer differential protection during the energization of a loaded power transformer is the ultra-saturation phenomenon. This paper presents, at first, a… read more here.
Keywords: power; power transformer; saturation; saturation phenomenon ... See more keywords