Optimal coordinated volt/var control in active distribution networks

Maher A. Azzouz, Ehab F. El-Saadany

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

8 Scopus citations


Voltage regulation in active distribution systems (ADN) becomes more challenging due to distributed generation (DG) interference with the conventional voltage control devices. The reasons behind that are the reverse power flow which is caused by the DG units and the probabilistic nature of renewable-based DG units. In this paper, a GA-based voltage regulation schemes is proposed to determine the optimal settings for the DG reactive powers. Moreover, a new hysteresis controller for the on-load tap changer (OLTC) is proposed, which utilizes the system's maximum and minimum voltages, to provide a proper voltage regulation when the OLTC feeds multiple feeders. The proposed control algorithms are coordinated to achieve an effective voltage regulation with less tap operation and DG reactive power. The proposed coordination is tested using a radial structure distribution network which is modeled using Matlab.

Original languageBritish English
Title of host publication2014 IEEE PES General Meeting / Conference and Exposition
PublisherIEEE Computer Society
ISBN (Electronic)9781479964154
StatePublished - 29 Oct 2014
Event2014 IEEE Power and Energy Society General Meeting - National Harbor, United States
Duration: 27 Jul 201431 Jul 2014

Publication series

NameIEEE Power and Energy Society General Meeting
ISSN (Print)1944-9925
ISSN (Electronic)1944-9933


Conference2014 IEEE Power and Energy Society General Meeting
Country/TerritoryUnited States
CityNational Harbor


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