scholarly journals PROJECT AIMED AT MEASURING THE ELECTRIC POWER QUALITY INDICATORSIN THE POWER SUPPLY SYSTEMOF THE LEBEDINSKY MINING AND PROCESSING PLANT

2015 ◽  
Author(s):  
Anatoly Vinogradov ◽  
Olga Zyabkina
Keyword(s):  
Electric Power ◽  
Power Quality ◽  
Power Supply ◽  
Processing Plant ◽  
Electric Power Quality

Study Results of the Electrical Parameters of the High-Power "Ladle-Furnace" Unit and its Impact on the Power Supply Network

2021 ◽  
Vol 3 (3) ◽  
pp. 33-43
Author(s):  
Ivan N. APRELKOV ◽  
Keyword(s):  
Electric Power ◽  
Power Quality ◽  
Power Supply ◽  
Electric Arc ◽  
Furnace Unit ◽  
Operating Conditions ◽  
Ladle Furnace ◽  
Supply Network ◽  
Study Results ◽  
Electric Power Quality

The steel refinement and its chemical composition and temperature finalization processes in a pouring ladle carried out by heating the metal with electric arc have received wide use at modern metallurgical enterprises. The article considers the electrical operating conditions of the ladle furnace unit (LFU) equipped with a 40 MVA electric furnace transformer. It was expected that the LFU load would vary insignificantly, because the electric arc burns between the electrodes and the surface of already molten metal, without the occurrence of short circuits. However, the accomplished studies testify that the LFU load is abruptly variable and nonlinear in nature, and gives rise to significant voltage fluctuations and harmonic distortions in the power supply network. The flicker intensity (severity) factor has been estimated, and the level of current harmonic components generated due to LFU operation has been determined. By using the obtained results, it becomes possible to predict the influence of LFU electric operating conditions on the levels of electric power quality indicators in changing the power supply network parameters, and to adopt circuit engineering solutions for assuring the electric power quality in the plant electric power supply system.

scholarly journals Improving Electric Power Quality within the Power Supply System of Wide-strip Hot-rolling Mill Stand

2015 ◽  
Vol 129 ◽  
pp. 2-8 ◽  
Author(s):  
A.S. Karandaev ◽  
G.P. Kornilov ◽  
V.R. Khramshin ◽  
T.R. Khramshin
Keyword(s):  
Electric Power ◽  
Power Quality ◽  
Hot Rolling ◽  
Power Supply ◽  
Rolling Mill ◽  
Power Supply System ◽  
Supply System ◽  
Electric Power Quality ◽  
Mill Stand ◽  
Hot Rolling Mill

Power Capacitors and the Improvement Technology of Electric Power Quality

2015 ◽  
Vol 135 (5) ◽  
pp. 272-275
Author(s):  
Shoji Nishimura ◽  
Shigeru Inno ◽  
Tatsuki Okamoto
Keyword(s):  
Electric Power ◽  
Power Quality ◽  
Electric Power Quality
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