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Energies 2017, 10(3), 291; doi:10.3390/en10030291

Decentralized Framework for Optimal Price-Based Power System Operation Using Feedback Control Mechanism

1
Department of Electrical Engineering, Jeju National University, 102 Jejudaehakno, Jeju-si, Jeju-do 63243, Korea
2
Department of Electrical and Computer Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
3
Department of Industrial Engineering Institute of Engineering Research, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Mark Deinert
Received: 28 December 2016 / Revised: 11 January 2017 / Accepted: 20 February 2017 / Published: 1 March 2017
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Abstract

Future power systems are expected to have distributed energy resources (DERs). A price-based operation (PBO), where dynamic prices are used as the control signal, can be an alternative scheme to address challenging operational issues in the future power systems. In this paper, a decentralized framework for optimal PBO using a feedback control mechanism is proposed to determine the nodal prices for power balance and congestion management. The substructures and feedback controllers of the proposed framework are derived based on the optimal power flow (OPF) method. Thus, the framework guarantees optimality for all situations in real-time and enables the use of various types of controllers. The effectiveness of the proposed framework is verified with the IEEE 39 bus network under some scenarios, such as the failure of a generator and a transmission line. The results clearly demonstrate that the proposed framework successfully resolves the balance and congestion problems by generating appropriate nodal prices in the PBO and provides a solution similar to the optimal solution determined by the conventional OPF method. View Full-Text
Keywords: congestion management; decentralized system; nodal prices; optimal power flow; power system operation congestion management; decentralized system; nodal prices; optimal power flow; power system operation
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Jin, Y.G.; Kim, S.W.; Lee, S.Y.; Yoon, Y.T. Decentralized Framework for Optimal Price-Based Power System Operation Using Feedback Control Mechanism. Energies 2017, 10, 291.

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