Optimal Control of Switched Capacitor Banks in Vietnam Distribution Network Using Integer Genetic Algorithm

Authors

Thanh-Son Tran
Electric Power University, Hanoi, Vietnam
Thu-Huyen Dang
Electric Power University, Hanoi, Vietnam
Anh-Tung Tran
Electric Power University, Hanoi, Vietnam
DOI: https://doi.org/10.52549/ijeei.v11i2.4518
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Published: 29-06-2023 • Issue: Vol. 11 No. 2: June 2023 • Section: Regular paper

Abstract

In distribution network, power and energy losses can be reduced by using switched capacitor banks. The capacitor banks can be switched on or off based on voltage profile or power factor or using timers. Due to variation of load, it is necessary to control the capacitor banks switching in function of load curve. This paper presents the application of an integer genetic algorithm to determine the optimal number of banks corresponding with hourly load to minimize total active power losses of distribution feeders. The problem constraints include voltage profile and heat conditions which are taken into account to the objective function by a penalty function. In this application, the structure of chromosomes is a set of numbers of the capacitor banks hourly connected to the grid. The proposed formulation is validated by a feeder. The result shows that in some cases, the active power losses at maximum compensation are greater than the ones of optimal control compensation, and the voltage reaches a higher level than the maximum voltage limit. The optimal control of switched capacitor banks can reduce power and energy losses as well as ensure maximum voltage profile within the limit.
Keywords: Optimal Operation; Integer Genetic Algorithm; Power Losses; Switched Capacitor Banks; Voltage Profile

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Author Biographies

Thanh-Son Tran

Thanh-Son Tran received the Engineer’s degree in electrical engineering from Hanoi University of Science and Technology, Hanoi, Vietnam, in 2004; the M.Sc. degree in electrical engineering from Grenoble Institute of Technology, Grenoble, France, in 2006, and the Ph.D. degree in electrical engineering from Joseph Fourier University, Grenoble, France, in 2009. He was a Postdoctoral Researcher in Grenoble Institute of Technology Enterprise from 2009 to 2010. He is currently the Dean of Electrical Engineering Faculty, Electric Power University, Hanoi. His research interests are power systems computations, optimizations, electromagnetic modeling, and numerical methods. He can be contacted at email: sontt@epu.edu.vn.


Thu-Huyen Dang

Thu-Huyen Dang received the Engineer’s degree in electrical engineering from Hanoi University of Science and Technology, Hanoi, Vietnam, in 2003; the M.Sc. degree in electrical engineering in 2006, and the Ph.D. degree in electrical engineering from from Grenoble Institute of Technology, Grenoble, France, in 2010.She works as lecturer of Electrical Engineering Faculty, Electric Power University, Hanoi. Her research interests are power systems computations, optimizations, high voltage engineering. She can be contacted at email: huyendt@epu.edu.vn.

Anh-Tung Tran

Anh-Tung TRAN received Ph.D. degree in Electrical Engineering from Paul Sabatier – Toulouse III University in 2012. He worked as postdoctoral position in Montpellier II university in 2013 and at École Technologie Supérieure (Montreal) in 2016. He is now leader of Electrical network team at Electric Power University in Hanoi, Vietnam. His field of interest includes nanodielectric composites, polymeric insulation material, electrical network optimization and smart grids. He can be contacted at email: tungta@epu.edu.vn.

How to Cite

[1]
T.-S. Tran, T.-H. Dang, and A.-T. Tran, “Optimal Control of Switched Capacitor Banks in Vietnam Distribution Network Using Integer Genetic Algorithm”, IJEEI, vol. 11, no. 2, pp. 553–561, Jun. 2023, doi: 10.52549/ijeei.v11i2.4518.