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Volt/VAR Optimization function with load uncertainty for planning of MV distribution networks
KTH, School of Electrical Engineering (EES), Electric power and energy systems.
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2015 (English)In: 2015 IEEE Eindhoven PowerTech, PowerTech 2015, IEEE conference proceedings, 2015Conference paper (Refereed)Text
Abstract [en]

Volt/VAR Optimization (VVO) function is an important element in real time operation of distribution networks and major part of advanced Distribution Management Systems (DMS). From planning prospective, VVO function can be used to optimize reactive power flow in distribution network to recommend the best operating condition for the control equipment in a predefined period of time in future (i.e. 24 hour). The typical objective function of VVO functions are minimizing the total system loss for a certain system load level. VVO function computes the optimized setting for transformer on-load tap changers (OLTC), Voltage Regulators (VR), and Capacitor Banks, while system voltage profile is maintained within its limits. In this paper the objective is to develop a planning VVO engine which can calculate the most probable expected loss of the network for the next 24 hours, and can recommend the best expected operating condition for the control equipment. For the VVO algorithm a full mixed integer linear programming (MILP) model is used to solve the loss objective of VVO problem for a planning application. The load uncertainty is modeled by an ARMA model which can create any arbitrary number of forecasted load scenarios to be used by VVO engine (implemented in a commercial solver GAMS, 'General Algebraic Modeling System'). The implemented models have been tested on a real distribution network in southern Sweden and the results are presented.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2015.
Keyword [en]
Distribution systems, Mixed Integer Linear Programming (MILP), Volt/VAR Optimization (VVO), Capacitors, Control equipment, Electric load flow, Engines, Reactive power, Real time systems, Uncertainty analysis, Voltage control, Voltage regulators, Distribution management systems, Mixed integer linear programming model, Mixed-integer linear programming, MV distribution networks, Planning applications, Transformer on-load tap changers, Volt/var optimizations, Integer programming
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-181170DOI: 10.1109/PTC.2015.7232790ScopusID: 2-s2.0-84951320452ISBN: 9781479976935OAI: diva2:902784
IEEE Eindhoven PowerTech, PowerTech 2015, 29 June 2015 through 2 July 2015

QC 20160212

Available from: 2016-02-12 Created: 2016-01-29 Last updated: 2016-02-12Bibliographically approved

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Hesamzadeh, Mohammad RezaTohidi, Yaser
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