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Modified superposition method for assignment of responsibilities on harmonic distortions

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3 Author(s)
Santos, I.N. ; Fed. Univ. of Uberlandia, Uberlandia, Brazil ; de Oliveira, J.C. ; Macedo, J.R.

Considering the guidelines contained in documents such as the IEEE Standard 519 and IEC 61000-3-6 that includes, among other indexes of power quality, the thematic of the harmonic distortion, the mentioned text refers to issues associated with definitions, measuring procedures, reference values, etc. Taking under consideration these determinations, and recognizing that the mitigating solutions for the adequacy of performance indexes involve significant financial costs, the proposition of finding ways to determine the responsibility for possible violations of pre-established limits for harmonic distortion arises. Among the proposals found to detect the contribution portions coming from the supplier and the customer, it is noteworthy that, in general, the methodologies based on principles use the frequency domain harmonized with the superposition of effects. Despite the simplicity of this procedure, it is emphasized that it relies on measuring information and on the previous knowledge of the equivalent harmonic impedances of the utility and customer, whose information are of difficult access. In this context, this paper is focused on a feasibility proposition to solve the above mentioned difficulties in obtaining the percentage of responsibility between the parties.

Published in:

Electrical Power Quality and Utilisation (EPQU), 2011 11th International Conference on

Date of Conference:

17-19 Oct. 2011

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