scholarly journals Study on Short-Circuit Impedance Characteristics in DN Traction Electric Lines

2019 ◽  
Vol 310 ◽  
pp. 032053
Author(s):  
Yang Liu ◽  
Zijian Yin ◽  
Qiang Gao ◽  
Xingjun Tian ◽  
Xiaoxuan Yang
Keyword(s):  
Short Circuit ◽  
Impedance Characteristics ◽  
Circuit Impedance

Short-circuit impedance measurement

2003 ◽  
Vol 150 (2) ◽  
pp. 169 ◽  
Author(s):  
K.O.H. Pedersen ◽  
A.H. Nielsen ◽  
N.K. Poulsen
Keyword(s):  
Short Circuit ◽  
Impedance Measurement ◽  
Circuit Impedance

Calculation of Leakage Magnetic Field and Short-Circuit Impedance of Power Transformer

2014 ◽  
Vol 986-987 ◽  
pp. 1767-1770
Author(s):  
Fang Xu Han ◽  
Yan Li ◽  
Xin Sun ◽  
Longnv Li
Keyword(s):  
Magnetic Field ◽  
Power Transformer ◽  
Short Circuit ◽  
Equivalent Circuit Model ◽  
Simulation Software ◽  
Secondary Development ◽  
Element Analysis ◽  
Leakage Magnetic Field ◽  
Basic Language ◽  
Circuit Impedance

The leakage magnetic field and equivalent circuit model of OLTC double-winding power transformer has been established by electromagnetic field Finite Element analysis software. The method of field-circuit coupled method has been used to calculate its magnetic field leakage, the short circuit impedance obtained by the calculation of formula and compared with the experimental data. At the same time, based on the calculation method for the Visual Basic language as a tool for MAGNET software for secondary development, obtain the software to calculate the short-circuit impedance of power transformer simulation software, and is verified by using the typical products, proves the validity of this software.

A Novel Method for Online Measuring the Short-Circuit Impedance of Distribution Transformers

2011 ◽  
Vol 301-303 ◽  
pp. 1072-1077
Author(s):  
Xia Li ◽  
Min You Chen ◽  
Shan Cheng
Keyword(s):  
Short Circuit ◽  
Equivalent Circuit Model ◽  
Current Data ◽  
The Novel ◽  
Distribution Transformers ◽  
Novel Method ◽  
Simulation Results ◽  
Data Acquisition Unit ◽  
Secondary Side ◽  
Circuit Impedance

The paper proposes a novel method for online measuring the short-circuit impendence of the distribution transformers (DT). The relation expression of the short-circuit impedance with respect to the voltage and current of the primary and secondary side has been developed through the analysis of the equivalent circuit model of a transformer, in which the voltage and current of the DT is collected by 12-channel-data-acquisition unit. And the online SCI is computed by fitting the obtained voltage and current data. The simulation results and comparison illustrated that the proposed method is simpler and more efficient with high accuracy. Besides, the proposed method integrates the linear fitting technique. The simulation results based on Matlab/smulink verified the feasibility and effectiveness of the novel method for online measuring the short-circuit impendence of the DT.

Measurements of short circuit impedance with EDG

2016 ◽  
Author(s):  
Umberto Corbellini ◽  
Mario La Rosa ◽  
Fabio Fiamingo
Keyword(s):  
Short Circuit ◽  
Circuit Impedance
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