Discrete-Event Systems Supervisory Control for a Dynamic Flow Controller

This paper presents supervisory control of a dynamic flow controller (DFC) based on the discrete-event systems (DES) theory. A DFC can be considered as a flexible AC transmission system controller and includes a mechanically-switched phase-shifting transformer, a multimodule thyristor-switched capac...

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Bibliographic Details
Published in:IEEE transactions on power delivery 2009-01, Vol.24 (1), p.219-230
Main Authors: Afzalian, A.A., Nabavi Niaki, S.A., Iravani, M.R., Wonham, W.M.
Format: Article
Language:English
Subjects:
Applied sciences
Automata
Automatic control
Capacitors
Control systems
Digital-to-frequency converters
Discrete event systems
Discrete-event systems (DES)
Disturbances. Regulation. Protection
dynamic flow controller (DFC)
Dynamical systems
Dynamics
Electrical engineering. Electrical power engineering
Electrical machines
Electrical power engineering
Electronics
Exact sciences and technology
Flexible AC transmission systems
Inductors
Logic
Logic design
Modular
Other multijunction devices. Power transistors. Thyristors
power flow
Power networks and lines
Regulation and control
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Supervisors
Supervisory control
Transformers and inductors
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Summary:This paper presents supervisory control of a dynamic flow controller (DFC) based on the discrete-event systems (DES) theory. A DFC can be considered as a flexible AC transmission system controller and includes a mechanically-switched phase-shifting transformer, a multimodule thyristor-switched capacitor, a multimodule thyristor-switched reactor, and a mechanically switched capacitor. Owing to the inherent discrete switching nature of a DFC, its components are modeled as finite automata; then, a DES supervisory control is designed to implement the control logic of the DFC system in different modes of operation (i.e., ldquoautomaticrdquo and ldquoauto/manualrdquo). It is shown that the specifications are controllable and the synthesized supervisors are nonblocking in both modes and the modular supervisors nonconflict in auto/manual mode.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2008.921114