ABB’s paper is scheduled for Tuesday 11th May, afternoon, Session 4 “New Frontiers for Technical Innovation”
Abstract
“Efficient power conversion system reduces aluminium production cost”
Presenter: Max Wiestner, ABB Switzerland Ltd
Harmonic currents create electrical losses and if not compensated create costs for additional electrical power. These additional costs for electrical power pay off the investment cost of the compensation system in a very short time.
Compensation systems connected to the power grid require detailed studies and a high number of parameters need to be known or made available by the power utility. When installed and operated on the grid, the power utility will normally ask to control them as they are connected to their grid. Their draw back is that should the feeding grid get polluted by other consumers during the years to come, they will be loaded with this power quality pollution.
Compensation systems connected to tertiary windings of the regulation transformer are decoupled from the grids and are less affected by power quality pollution coming from the grid or which already exist in the grid.
Both compensation concepts eliminate the need for additional power generation units which cost many times the initial cost of a compensation system, or additional cost for electrical power due to electrical losses created by poor power quality.
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