PLC implementation of decentralized supervisory control for Dynamic Flow Controller

Afzalian, Ali A.; Noorbakhsh, Mahvash; Nabavi, Seyedbehzad

doi:10.1109/cca.2008.4629673

Cited by 6 publications

(11 citation statements)

References 9 publications

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“…In this section, the needs of control are discussed, and then, for two different states, a modified strategy is proposed and compared with the previous strategies in details. In , it has discussed that HFC should be able to fast respond to a power flow command, adjust the steady state operating point of the HFC within the “ ABCD ” area of Figure such that the HFC is ready to increase or decrease rapidly the power flow symmetrically to the subsequent power flow commands without reaching its limits of operation. This constraint is best met if the steady state operating point of HFC unit is located on the solid line within the area of Figure (i.e., zero TSSC step).…”

Section: A Modified Switching Strategy For Hfcmentioning

confidence: 99%

“…The applied strategy in is such that to provide a zero step, each step of TSSC is replaced with only one tap of PST. This method is not the best solution because in different operating points, power steps resulting from changing the PST tap and TSSC step are not equal.…”

Section: A Modified Switching Strategy For Hfcmentioning

confidence: 99%

“…On one hand, owing to the discrete switching nature of the HFC, many of the conventional controllers such as PI are not applicable. On the other hand, a supervisory controller based on discrete event system for the HFC has been designed in and implemented on a programmable logic controller in . Another strategy for the HFC has been introduced in and also implemented with an FLC, but it faces with several mistakes in many situations because all the possible states have not been considered.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, some influencing factors of the controller still have not been determined. Besides, the controllers designed in are complicated but not applicable in all the possible states. Therefore, there is a need to design a simple controller for switching in all the states.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Classical and fuzzy controllers for a hybrid flow controller

Soreshjani

Kargar

Niaki

et al. 2013

Int. Trans. Electr. Energ. Syst.

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SUMMARY This paper proposes a modified switching strategy for hybrid flow controller (HFC) as a power flow controller. The current strategies for HFC are suitable only for specific situations and generally are not applicable. The modified strategy is implemented by using the logical operators as a classical controller. Simulation results on two situations, representing all the possible states of the HFC, verify its performance. The fluctuations of the transferred active power caused by switching the HFC might have an adverse effect on the decision of the controller as well as the stability of the system. To mitigate the fluctuations, a fuzzy logic controller is designed, and also a comparison with the classical controller is provided. Copyright © 2013 John Wiley & Sons, Ltd.

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Section: A Modified Switching Strategy For Hfcmentioning

confidence: 99%

Section: A Modified Switching Strategy For Hfcmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Classical and fuzzy controllers for a hybrid flow controller

Soreshjani

Kargar

Niaki

et al. 2013

Int. Trans. Electr. Energ. Syst.

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“…ULTC-HIGH2 = Sync(G-HIGH2,Susceptance-Meter) (2,11) The specifications shown in Fig. 9 are used to implement the mentioned control logic for timer adjustment in the high level.…”

Section: B High-level Ultc Supervisor-1 (Emergency Control Against Vmentioning

confidence: 99%

Decentralized DES Supervisory Control for Coordination of ULTC and SVC

Noorbakhsh¹,

Afzalian²

2011

Asian Journal of Control

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This paper discusses the issues involved in modeling and synthesizing a discrete-event supervisory control system in a decentralized structure to coordinate the behavior of an under-load tap-changing transformer (ULTC) and a static VAR compensator (SVC) in electrical power systems. The control specifications are modeled as some automata, and it is shown that they are controllable. The designed closed-loop control system is non-blocking. The consistency of the high-level model in a two-level hierarchical control system is investigated. The proposed supervisory control is tested by inspecting its behavior in a simulated situation.

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Modeling and synthesis of DES supervisory control for coordinating ULTC and SVC

Noorbakhsh¹,

Afzalian²

2009

2009 American Control Conference

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PLC implementation of decentralized supervisory control for Dynamic Flow Controller

Cited by 6 publications

References 9 publications

Classical and fuzzy controllers for a hybrid flow controller

Classical and fuzzy controllers for a hybrid flow controller

Decentralized DES Supervisory Control for Coordination of ULTC and SVC

Modeling and synthesis of DES supervisory control for coordinating ULTC and SVC

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