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Evaluation of Brazilian regulatory parameters in technical losses calculation: a case of study

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Abstract

In Brazil, the regulatory agency defines how much revenue each distribution utility will have to cover the technical losses cost. This amount is defined by an estimation of technical losses via power flow with systems modeled in detail through data provided yearly by each utility. In this process, some assumptions and simplifications are considered to reduce required data and to set some limits in technical losses. Therefore, some network inefficiencies are not considered in the results. However, these parameters are under scrutiny by the utilities as they could result in revenue losses. In this context, this paper evaluates if these assumptions are well balanced through large-scale tests in a real network composed by 724 feeders. The study was conducted in Open Distribution System Simulator (OpenDSS), the same software adopted by the Brazilian regulatory agency, and shows which parameters have more impact in the technical losses calculation. From the results, it is possible to verify a high impact on technical losses with the adoption of standards for transformer losses and also a great relevance of the load model adopted.

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Authors and Affiliations

  1. Celesc Distribuição S.A, Florianópolis, Brazil

    Júlia S. Paul

  2. Department of Electrotechnics, Federal Institute of Santa Catarina, Florianópolis, Brazil

    Edison A. C. Aranha Neto

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  1. Júlia S. Paul
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  2. Edison A. C. Aranha Neto
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Correspondence to Júlia S. Paul.

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Paul, J.S., Aranha Neto, E.A.C. Evaluation of Brazilian regulatory parameters in technical losses calculation: a case of study. Int J Energy Environ Eng 14, 135–143 (2023). https://doi.org/10.1007/s40095-022-00504-6

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