Optimal tap settings for voltage regulation transformers in distribution networks

Brett A. Robbins, Hao Zhu, Alejandro D. Dominguez-Garcia

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we propose a method to optimally set the taps of voltage regulation transformers in distribution networks. Specifically, we cast the problem of optimally choosing the tap settings as a rank-constrained semidefinite program (SDP) with the transformer tap positions removed from the network's admittance matrix and replaced by additional constraints and optimization variables. Then, the non-convex rank-1 constraint that arises from this rank-constrained SDP formulation is relaxed, which leads to a convex SDP program. The tap positions are obtained from the primary- and secondary-side bus voltages yielded by the optimal solution. We present several case studies with a 14-bus single-phase and a 15-bus three-phase distribution system to demonstrate the validity of our method.

Original languageEnglish (US)
Title of host publication45th North American Power Symposium, NAPS 2013
DOIs
StatePublished - Dec 1 2013
Event45th North American Power Symposium, NAPS 2013 - Manhattan, KS, United States
Duration: Sep 22 2013Sep 24 2013

Publication series

Name45th North American Power Symposium, NAPS 2013

Other

Other45th North American Power Symposium, NAPS 2013
Country/TerritoryUnited States
CityManhattan, KS
Period9/22/139/24/13

Keywords

  • Optimal Power Flow (OPF)
  • Semidefinite Programming (SDP)
  • Tap-Changing under-load (TCUL) transformer

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology

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