Electrical Engineering

, Volume 100, Issue 2, pp 1133–1146 | Cite as

Coordinated distribution network control of tap changer transformers, capacitors and PV inverters

  • Oğuzhan Ceylan
  • Guodong Liu
  • Kevin Tomsovic
Original Paper


A power distribution system operates most efficiently with voltage deviations along a feeder kept to a minimum and must ensure all voltages remain within specified limits. Recently with the increased integration of photovoltaics, the variable power output has led to increased voltage fluctuations and violation of operating limits. This paper proposes an optimization model based on a recently developed heuristic search method, grey wolf optimization, to coordinate the various distribution controllers. Several different case studies on IEEE 33 and 69 bus test systems modified by including tap changing transformers, capacitors and photovoltaic solar panels are performed. Simulation results are compared to two other heuristic-based optimization methods: harmony search and differential evolution. The simulation results show the effectiveness of the method and indicate the usage of reactive power outputs of PVs facilitates better voltage magnitude profile.


Smart grid Grey wolf optimization Distributed generation Voltage regulation 



This work was sponsored by the Office of Electricity Delivery & Energy Reliability, US Department of Energy under Contract No. DE-AC05-00OR 22725 with UT-Battelle and conducted at ORNL and UT Knoxville. This work also made use of Engineering Research Center Shared Facilities supported by the Engineering Research Center Program of the National Science Foundation and the Department of Energy under NSF Award Number EEC-1041877 and the CURENT Industry Partnership Program. The first author would like to thank the Scientific and Technological Research Council of Turkey (TUBITAK) for its financial support.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  1. 1.Istanbul Kemerburgaz UniversityIstanbulTurkey
  2. 2.Oak Ridge National LaboratoryOak RidgeUSA
  3. 3.University of Tennessee KnoxvilleKnoxvilleUSA

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