Research on Short-Circuit Force of Distribution Transformer Based on Short-Circuit Test by Single-Phase Power and Three-phase Power

2021 ◽  
Author(s):  
Xiaoxiao Luo ◽  
Qianbo Xiao ◽  
Qian Wang ◽  
Wenyan Gan ◽  
Baojia Deng ◽  
...  
Keyword(s):  
Single Phase ◽  
Short Circuit ◽  
Distribution Transformer ◽  
Three Phase ◽  
Short Circuit Test

The Economic Operation of Common Coupling Groups of Distribution Transformer

2014 ◽  
Vol 521 ◽  
pp. 288-291
Author(s):  
Yu Sheng Quan ◽  
Xin Zhao ◽  
Hua Gui Chen ◽  
En Ze Zhou
Keyword(s):  
Single Phase ◽  
Short Circuit ◽  
Phase System ◽  
Distribution Transformer ◽  
Three Phase ◽  
Unbalanced Load ◽  
Transformer Coupling ◽  
The Difference ◽  
Short Circuit Fault ◽  
Better Than

Based on the method of symmetrical components of D, 11 and Y, o distribution transformer coupling two different effects of different magnetic circuit coupled to the three-phase system with a system-generated analysis and comparison. Analysis of the difference between the two groups of different connections on the transformer structure. Described in the single-phase short circuit fault clearing, 3n harmonic current suppression and affordability aspects of single-phase unbalanced load, D, ll coupling transformers are significantly better than Y,0 coupling transformer. This has necessarily important for the study of energy loss reduction.

Augmented Short-Circuit Test for the Measurement of Transformer Equivalent-Circuit Parameters with Large Series Branch Impedances

2010 ◽  
Vol 47 (1) ◽  
pp. 86-93
Author(s):  
Saurabh Kumar Mukerji ◽  
Moleykutty George
Keyword(s):  
Equivalent Circuit ◽  
High Voltage ◽  
Single Phase ◽  
Short Circuit ◽  
Large Series ◽  
Test Results ◽  
Voltage Supply ◽  
Short Circuit Test ◽  
Equivalent Circuit Parameters

An augmented short-circuit test is described for the determination of equivalent-circuit parameters of single-phase transformers with large series-branch impedances. This test may be conducted at rated currents with the transformer connected to a reduced voltage supply. Thus harmonics in current and voltage waves are negligible. This test is therefore free from harmonics-associated errors. Based on test results, phasor equations are found which give formulae for the equivalent-circuit parameters with series-branch impedance split into low- and high-voltage components.

Investigation of electromagnetic force during short-circuit test in three-phase busbar system

2011 ◽  
Author(s):  
Farhana Mohamad Yusop ◽  
Mohamad Kamarol Mohd Jamil ◽  
Dahaman Ishak ◽  
Muhamad Husaini ◽  
Syafrudin Masri
Keyword(s):  
Electromagnetic Force ◽  
Short Circuit ◽  
Three Phase ◽  
Short Circuit Test

Sensitivity of Induction Motor under Symmetrical Voltage Sags and Interruption

2014 ◽  
Vol 875-877 ◽  
pp. 1923-1928 ◽  
Author(s):  
Surya Hardi ◽  
Ismail Daut ◽  
Ismail Rohana ◽  
Muhd Hafizi
Keyword(s):  
Power Systems ◽  
Distribution Systems ◽  
Single Phase ◽  
Induction Motors ◽  
Short Circuit ◽  
Inrush Current ◽  
Voltage Sags ◽  
Three Phase ◽  
Nominal Voltage ◽  
Transmission And Distribution

Voltage sags and interruption are one of most important of power quality problems. They can influence performance of equipment such as induction motors. They are generally caused by short circuit faults in transmission and distribution systems which propagate in entire of power systems. When their appear at a motor terminal, its effects are the speed and the torque will decrease to a level lower than values of the normal and even the motor become stall if magnitude of the voltage sags and duration exceed certain limit. The voltage can return to nominal voltage after end of the voltage sag and interruption. The motor will experience re-acceleration to normal condition is accompanied by large inrush current. A study on induction motors was carried out to confirm these effects. Single-phase and three-phase of small induction motors were used for investigating the effects caused by symmetrical voltage sags and interruption through experimental and simulation.

scholarly journals Advanced Closing Switch for three phase short circuit test of very fast current limiter

1997 ◽  
Vol 117 (11) ◽  
pp. 1442-1447
Author(s):  
M. Isozaki ◽  
T. Hikosaka ◽  
Y. Hatakeyama ◽  
M. Yamada ◽  
T. Morita
Keyword(s):  
Short Circuit ◽  
Three Phase ◽  
Short Circuit Test ◽  
Current Limiter

scholarly journals Determination of Field Current of Three-Phase Synchronous Machine from Low-Speed Short-Circuit Test.

1992 ◽  
Vol 112 (5) ◽  
pp. 467-476
Author(s):  
Youichi Ishii ◽  
Takehisa Igari ◽  
Tomoyuki Ichikawa ◽  
Yutaka Aoki
Keyword(s):  
Short Circuit ◽  
Synchronous Machine ◽  
Low Speed ◽  
Three Phase ◽  
Short Circuit Test
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