Results 71 to 80 of about 31,975 (291)

Methods for determining the scattering of transformer windings individually

Vestnik MGTU, 2019
The total leakage reactance of the transformer with concentric cylindrical windings depends on the thickness of the coils and the gap between them.
Popov I. P.
doaj   +1 more source

Analysis of transient action influence in power transformer [PDF]

, 2011
This article is focused on the theory of unacceptable effect on transformer winding, mainly the overvoltages and the mechanical forces. In the next part of the article is described the measurement of selfdischarging voltage frequency dependence on ...
Gutten, Miroslav, Jurcik, Jozef, Korenčiak, Daniel   +2 more
core  

Leveraging Sensory Data in Estimating Transformer Lifetime

, 2017
Transformer lifetime assessments plays a vital role in reliable operation of power systems. In this paper, leveraging sensory data, an approach in estimating transformer lifetime is presented.
Hosseini, Zohreh S., Khodaei, Amin, Mahoor, Mohsen, Majzoobi, Alireza   +3 more
core   +1 more source

LDAcoop: Integrating non‐linear population dynamics into the analysis of clonogenic growth in vitro

Molecular Oncology, EarlyView.
Limiting dilution assays (LDAs) quantify clonogenic growth by seeding serial dilutions of cells and scoring wells for colony formation. The fraction of negative wells is plotted against cells seeded and analyzed using the non‐linear modeling of LDAcoop.
Nikko Brix, Daniel Samaga, Katharina Gehr, Benedek Dankó, Mohamed Schumann, Guido Drexler, Ahmed Alnatsha, Georg Beyer, Ujjwal Mahajan, Martin Selmansberger, Julia Mayerle, Claus Belka, Horst Zitzelsberger, Kirsten Lauber   +13 more
wiley   +1 more source

A study of dual-cantilever beam FBG sensing detection of transformer winding vibration

AIP Advances
The safe and stable operation of the transformer is the key to ensure the reliable operation of the power grid. Loose windings will produce a vibration acceleration signal with twice the power supply frequency signal, i.e., 100 Hz, as the main spectral ...
Xiang Lin, Jian Fang, Qingdan Huang, Min Zhang, Yan Tian, Rui Tong, Xiaofeng Dai   +6 more
doaj   +1 more source

An Experimental Study of the Sweep Frequency Impedance Method on the Winding Deformation of an Onsite Power Transformer

Energies, 2020
Power transformers are one of the most important devices in electrical networks. The safety operation of the transformers directly affects the reliability of the power system. To diagnose the internal deformation of the transformer as soon as possible is
Song Wang, Shuang Wang, Ying Cui, Jie Long, Fuqiang Ren, Shengchang Ji, Shuhong Wang   +6 more
doaj   +1 more source

Technical and vocational skills (TVS): a means of preventing violence among youth in Nigeria [PDF]

, 2017
Technical and vocational skills are an important tool for reducing violence among youth, especially in Nigeria, who face security challenges due to different kinds of violence.
Ibrahim, Mohammed, Wan Mohamed, Wan Azlinda   +1 more
core  

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

Molecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff, Manuela Moritz, Dennis Eggert, Anna Worthmann, Joerg Heeren, Henrike Zech, Till S. Clauditz, Waldemar Wilczak, Hartmut Schlüter, Christian S. Betz, Arne Böttcher, Jan Hahn   +11 more
wiley   +1 more source

Equivalent Circuit Model and Experimental Validation of Transformer Windings Considering Long‐Distance Conductor Effects and Frequency‐Dependent Parameters

IET Electric Power Applications
The impulse frequency response method is often combined with the transformer winding equivalent circuit to jointly analyse the frequency response mechanism of the transformer and the winding state, while winding modelling is the necessary fundamental ...
Feng Yiwei, Yao Chenguo, Liu Jiangnan, Dong Shoulong, Liu Yu, Luo Huangtong, Zhao Lisheng   +6 more
doaj   +1 more source

Partial Discharge Location within a Transformer Winding using Principal Component Analysis

, 2011
Partial discharge (PD) may occur in a transformer winding due to ageing processes, operational over stressing or defects introduced during manufacture. The presence of PD does not necessarily indicate imminent failure of the transformer but it will lead ...
Abd Rahman, M S, Hao, L, Lewin, P L
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