A Comparative Study of Electric Load Curve Changes in an Urban Low-Voltage Substation in Spain during the Economic Crisis (2008-2013)

  1. Lara-Santillán, P.M. 1
  2. Mendoza-Villena, M. 1
  3. Fernández-Jiménez, L.A. 1
  4. Mañana-Canteli, M. 2
  1. 1 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

  2. 2 Universidad de Cantabria
    info

    Universidad de Cantabria

    Santander, España

    ROR https://ror.org/046ffzj20

Revista:
TheScientificWorldJournal

ISSN: 1537-744X

Año de publicación: 2014

Volumen: 2014

Páginas: 1-14

Tipo: Artículo

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DOI: 10.1155/2014/948361 SCOPUS: 2-s2.0-84900004411 WoS: WOS:000335052800001 GOOGLE SCHOLAR

Otras publicaciones en: TheScientificWorldJournal

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Resumen

This paper presents a comparative study of the electricity consumption (EC) in an urban low-voltage substation before and during the economic crisis (2008-2013). This low-voltage substation supplies electric power to near 400 users. The EC was measured for an 11-year period (2002-2012) with a sampling time of 1 minute. The study described in the paper consists of detecting the changes produced in the load curves of this substation along the time due to changes in the behaviour of consumers. The EC was compared using representative curves per time period (precrisis and crisis). These representative curves were obtained after a computational process, which was based on a search for days with similar curves to the curve of a determined (base) date. This similitude was assessed by the proximity on the calendar, day of the week, daylight time, and outdoor temperature. The last selection parameter was the error between the nearest neighbour curves and the base date curve. The obtained representative curves were linearized to determine changes in their structure (maximum and minimum consumption values, duration of the daily time slot, etc.). The results primarily indicate an increase in the EC in the night slot during the summer months in the crisis period