Harmonics in industrial power networks of aluminium smelters  A comprehensive mitigation approach

Author(s): Hemang K. Thakkara, Prashant Kumar Soorib*, Sibi Chackob
a Sr. Power System Planning Engineer, Dubai Aluminium, Dubai, U.A.E
b School of Engineering & Physical Sciences, Heriot Watt University, Dubai,U.A.E
International Journal of Smart Grid and Clean Energy, vol. 4, no. 1, January 2015: pp. 77-84
ISSN: 2315-4462 (Print)
ISSN: 2373-3594 (Online)
Digital Object Identifier: 10.12720/sgce.4.1.77-84

Abstract: Large DC power requirements supplied through extensive use of rectifying equipment imposes challenges on the electrical power network of Aluminium smelters to maintain power quality parameters within acceptable limits. Conventional methods of design considerations of transformer phase shifting alone may not be sufficient in view of expansions, complexity and other practical considerations of the smelters. A more comprehensive approach using passive harmonic filters which can provide an optimum techno-commercial solution along with reactive power compensation can be applied network wide. This paper presents a case study of implementation of harmonic filters in a real network of Aluminium smelter based on harmonic simulations and filter parameters recommendations through software simulations. At the end, the estimations are compared with the actual results obtained through measurements.

Keywords: Aluminium smelters, converter, filters, harmonics, IPSA, power quality, rectifiers, simulation

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