Zoning Evaluation for Improved Coordinated Automatic Voltage Control

Hierarchically structured automatic voltage control (AVC) architecture has attracted increased interest as networks operate closer to their capacity limits. Hierarchical AVC enables wide-area coordinated voltage regulation (CVR). Due to the inherent complexity of the task, it is based on reduced con...

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Bibliographic Details
Published in:IEEE transactions on power systems 2015-09, Vol.30 (5), p.2736-2746
Main Authors: Alimisis, Varvara, Taylor, Philip C.
Format: Article
Language:English
Subjects:
Adaptive control model reduction (adaptive-RCM)
Automatic voltage control
automatic voltage control (AVC)
coordinated voltage regulation (CVR)
erroneous data
Generators
graph theory
pilot nodes
Reactive power
Reduced order systems
Robustness
Sensitivity
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Summary:Hierarchically structured automatic voltage control (AVC) architecture has attracted increased interest as networks operate closer to their capacity limits. Hierarchical AVC enables wide-area coordinated voltage regulation (CVR). Due to the inherent complexity of the task, it is based on reduced control models, i.e., simplified models of the system suitable for voltage control. It is a fact however that a single reduced control model (static RCM) cannot be optimal for all network configurations and operating conditions. In pursuit of an improved CVR, this paper investigates the applicability of zoning methodologies in adaptively determined RCM. It further argues that the selection of a zoning methodology affects not only the CVR operation, but also its robustness to erroneous data and proposes a comprehensive generic framework for evaluating its performance. Lastly, it extends and evaluates several zoning-based control model reduction methodologies: namely, hierarchical clustering employing two different proximity metrics, spectral k-way and fuzzy C-means, on both static and adaptive schemes.
ISSN:0885-8950
1558-0679
DOI:10.1109/TPWRS.2014.2369428