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Energies 2017, 10(3), 300; doi:10.3390/en10030300

A Dynamic Economic Dispatch Model for Uncertain Power Demands in an Interconnected Microgrid

1
Technology Strategy Team, Korea Electric Power Corporation, 55, Jeollyeok-ro, Naju-si 58217, Jeollanam-do, Korea
2
Department of Energy System Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 156-756, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Chunhua Liu
Received: 9 November 2016 / Revised: 21 February 2017 / Accepted: 22 February 2017 / Published: 3 March 2017
(This article belongs to the Collection Smart Grid)
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Abstract

In this paper, we propose a dynamic economic dispatch (DED) model with sharing of responsibility for supply–demand balance under uncertain demands in a microgrid (MG). For developing the proposed model, an energy band operation scheme, including a tie-line flow (TLF) contraction between the main grid and the microgrid (MG), is constructed for preventing considerable changes in the TLFs caused by DED optimization. The proposed scheme generalizes the relationship between TLF contractions and MG operational costs. Moreover, a chance-constrained approach is applied to prevent short- and over-supply risks caused by unpredictable demands in the MG. Based on this approach, it is possible to determine the reasonable ramping capability versus operational cost under uncertain power demands in the MG. View Full-Text
Keywords: chance-constrained approach; dynamic economic dispatch (DED); model predictive control (MPC); energy band operation scheme; tie-line flow (TLF) chance-constrained approach; dynamic economic dispatch (DED); model predictive control (MPC); energy band operation scheme; tie-line flow (TLF)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Jang, Y.-S.; Kim, M.-K. A Dynamic Economic Dispatch Model for Uncertain Power Demands in an Interconnected Microgrid. Energies 2017, 10, 300.

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