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Appl. Sci. 2016, 6(1), 4; doi:10.3390/app6010004

Coordinated Volt/Var Control in Distribution Systems with Distributed Generations Based on Joint Active and Reactive Powers Dispatch

Center of Excellence for Power Systems Automation and Operation, Iran University of Science and Technology, Tehran 1311416846, Iran
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Academic Editors: Minho Shin and Christos Verikoukis
Received: 21 August 2015 / Revised: 30 November 2015 / Accepted: 7 December 2015 / Published: 4 January 2016
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Abstract

One of the most significant control schemes in optimal operation of distribution networks is Volt/Var control (VVC). Owing to the radial structure of distribution systems and distribution lines with a small X/R ratio, the active power scheduling affects the VVC issue. A Distribution System Operator (DSO) procures its active and reactive power requirements from Distributed Generations (DGs) along with the wholesale electricity market. This paper proposes a new operational scheduling method based on a joint day-ahead active/reactive power market at the distribution level. To this end, based on the capability curve, a generic reactive power cost model for DGs is developed. The joint active/reactive power dispatch model presented in this paper motivates DGs to actively participate not only in the energy markets, but also in the VVC scheme through a competitive market. The proposed method which will be performed in an offline manner aims to optimally determine (i) the scheduled active and reactive power values of generation units; (ii) reactive power values of switched capacitor banks; and (iii) tap positions of transformers for the next day. The joint active/reactive power dispatch model for daily VVC is modeled in GAMS and solved with the DICOPT solver. Finally, the plausibility of the proposed scheduling framework is examined on a typical 22-bus distribution test network over a 24-h period. View Full-Text
Keywords: joint active and reactive powers dispatch; reactive power payment function; Volt/Var control; distributed generation; active and reactive power market joint active and reactive powers dispatch; reactive power payment function; Volt/Var control; distributed generation; active and reactive power market
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Samimi, A.; Kazemi, A. Coordinated Volt/Var Control in Distribution Systems with Distributed Generations Based on Joint Active and Reactive Powers Dispatch. Appl. Sci. 2016, 6, 4.

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