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Improvement of load bus voltages considering the optimal dispatch of active and reactive powers
CQ University, Australia.
2008 (English)In: Proceedings of the Universities Power Engineering Conference, Padova, 2008Conference paper (Refereed)
Abstract [en]

This paper presents a simultaneous active and reactive power/voltage dispatch methodology using a mixture of continuous and discrete control variables. The continuous control variables are active power and reactive power/voltage magnitudes of generator buses, while the discrete ones are transformer-tap settings. The Lambda iteration based economic dispatch is used to minimize the fuel cost and active power dispatch among the generators. During this process, the voltage magnitude of load buses may move away from the desired value. The genetic algorithm is applied for optimal reactive power/voltage dispatch among generators and determination of tap settings of under load tap changers (ULTCs). This results in globally improvement of voltage regulation of load buses. Considering the fact that the reactive power/voltage of generators are continuous variables while the transformer tap settings are discrete variables, a method is proposed to combine these variables into one suitable chromosome. The IEEE 30-bus test system is used to illustrate the effectiveness and feasibility of proposed approach.

Place, publisher, year, edition, pages
Padova, 2008.
, 43rd International Universities Power Engineering Conference, UPEC 2008
Keyword [en]
Active and reactive powers, Genetic algorithm, Voltage profile, Active and reactive power, Active power, Continuous control, Continuous variables, Discrete control variables, Discrete variables, Economic Dispatch, Fuel cost, Generator bus, Load bus voltage, Optimal dispatch, Test systems, Under-load tap changer, Voltage magnitude, Voltage regulations, Genetic algorithms, Reactive power, Voltage control, Voltage regulators, Electric potential
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-79311DOI: 10.1109/UPEC.2008.4651482ISBN: 9788889884096 (ISBN)OAI: diva2:495327
Universities Power Engineering Conference
QC 20120209Available from: 2012-02-08 Created: 2012-02-08 Last updated: 2012-02-09Bibliographically approved

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Hesamzadeh, Mohammad
Electrical Engineering, Electronic Engineering, Information Engineering

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