Mathematical modeling of the load curve of a real electric system from Fourier series

Authors

  • Andressa Tais Diefenthäler Universidade Regional do Noroeste do Estado do Rio Grande do Sul (UNIJUI)
  • Airam T. Z. R. Sausen Universidade Regional do Noroeste do Estado do Rio Grande do Sul (UNIJUI)
  • Paulo S. Sausen Universidade Regional do Noroeste do Estado do Rio Grande do Sul (UNIJUI)
  • Maurício de Campos Universidade Regional do Noroeste do Estado do Rio Grande do Sul (UNIJUI)

DOI:

https://doi.org/10.5335/rbca.v11i2.8805

Keywords:

Fourier series, industrial and residential, mathematical modeling, typical load curve

Abstract

The knowledge of the typical load curve is fundamental for the planning and operation of electric distribution networks, especially in face of the trends of distributed generation and transformation of systems in Smart Grids. Thus, this paper presents the mathematical modeling, from the Fourier series, of the daily load curve of two feeders of a real electric distribution network of the Brazil south. Matlab software (student license) is used considering the nonlinear least squares method and real data of the load consumed in the years 2016 to 2018, Fourier series curves were adjusted for each climatic season and feeder, obtaining mathematical models with high accuracy. The analysis of the results allows the demand knowledge and the load profile identifying the peak consumption periods, as well as the hourly and seasonal variations. Through this research two mathematical models were validated. They allow to represent the typical load curve of a system and characterize it as to the type of predominant load, whether industrial or residential.

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Published

2019-06-17

Issue

Section

Original Paper

How to Cite

[1]
2019. Mathematical modeling of the load curve of a real electric system from Fourier series. Brazilian Journal of Applied Computing. 11, 2 (Jun. 2019), 64–73. DOI:https://doi.org/10.5335/rbca.v11i2.8805.