Experimental determination of the ZIP coefficients for modern residential, commercial, and industrial loads

Abdullah Bokhari, Ali Alkan, Rasim Dogan, Marc Diaz-Aguilo, Francisco De Leon, Dariusz Czarkowski, Zivan Zabar, Leo Birenbaum, Anthony Noel, Resk Ebrahem Uosef

Research output: Contribution to journalArticle

Abstract

This paper presents the experimental determination of the ZIP coefficients model to represent (static) modern loads under varying voltage conditions. ZIP are the coefficients of a load model comprised of constant impedance Z, constant current I, and constant power P loads. A ZIP coefficient load model is used to represent power consumed by a load as a function of voltage. A series of surveys was performed on typical residential, commercial, and industrial customers in New York City. Household appliances and industrial equipment found in the different locations were tested in the laboratory by varying the voltage from 1.1-p.u. voltage to 0 and back to 1.1 pu in steps of 3 V to obtain the individual P-V, Q-V, and I-V characteristics. Customer load tables were built using seasonal factors and duty cycles to form weighted contributions for each device in every customer class. The loads found in several residential classes were assembled and tested in the lab. It was found that modern appliances behave quite differently than older appliances even from only 10 years back. Models of the different customer classes were validated against actual recordings of load variations under voltage reduction.

Original languageEnglish (US)
Article number6648709
Pages (from-to)1372-1381
Number of pages10
JournalIEEE Transactions on Power Delivery
Volume29
Issue number3
DOIs
StatePublished - 2014

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Electric potential
Domestic appliances

Keywords

  • Commercial class
  • industrial class
  • load characteristic
  • load composition
  • load model
  • residential class
  • ZIP coefficients

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology

Cite this

Experimental determination of the ZIP coefficients for modern residential, commercial, and industrial loads. / Bokhari, Abdullah; Alkan, Ali; Dogan, Rasim; Diaz-Aguilo, Marc; De Leon, Francisco; Czarkowski, Dariusz; Zabar, Zivan; Birenbaum, Leo; Noel, Anthony; Uosef, Resk Ebrahem.

In: IEEE Transactions on Power Delivery, Vol. 29, No. 3, 6648709, 2014, p. 1372-1381.

Research output: Contribution to journalArticle

Bokhari, Abdullah ; Alkan, Ali ; Dogan, Rasim ; Diaz-Aguilo, Marc ; De Leon, Francisco ; Czarkowski, Dariusz ; Zabar, Zivan ; Birenbaum, Leo ; Noel, Anthony ; Uosef, Resk Ebrahem. / Experimental determination of the ZIP coefficients for modern residential, commercial, and industrial loads. In: IEEE Transactions on Power Delivery. 2014 ; Vol. 29, No. 3. pp. 1372-1381.
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