Approximate load models for conic OPF solvers

Firdous Ul Nazir, Bikash C. Pal*, Rabih A. Jabr

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

The global optimum of the optimal power flow (OPF) problem can be sought in various practical settings by adopting the conic relaxations, such as the second order cone programs (SOCPs) and semi-definite programs (SDPs). However, the ZIP (constant impedance, constant current, constant power) and exponential load models are not directly amenable with these conic solvers. Thus, these are mostly treated as constant power loads in the literature. In this letter, we propose two simple methods to approximate these static loads with good accuracy. The proposed methods perform much better than the traditional constant power approximation.

Original languageEnglish
Article number9216007
Pages (from-to)549-552
Number of pages4
JournalIEEE Transactions on Power Systems
Volume36
Issue number1
DOIs
Publication statusPublished - 7 Oct 2020
Externally publishedYes

Keywords

  • Exponential load model
  • optimal power flow
  • second order cone programming
  • semi-definite programming
  • ZIP load model

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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