A Lagrangian multiplier based sensitive index to determine the unit commitment of thermal units

被引:22
作者
Silva, Ivo C., Jr. [2 ]
Carneiro, Sandoval, Jr. [2 ]
de Oliveira, Edimar J. [1 ]
Pereira, J. L. R. [1 ]
Garcia, Paulo A. N. [1 ]
Marcato, Andre L. M. [1 ]
机构
[1] Fed Univ Juiz Fora UFJF, Dept Elect Engn, Juiz De Fora, MC, Brazil
[2] Univ Fed Rio de Janeiro, Dept Elect Engn, Rio De Janeiro, RJ, Brazil
关键词
Lagrangian coefficients; Sigmoid function; Interior-point; Priority list; Unit commitment;
D O I
10.1016/j.ijepes.2008.04.004
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper proposes the utilization of a new sensitivity index to organize a priority list for the solution of the unit commitment problem. The discrete nature of the operational decisions is mitigated through a continuous function. The new index is derived from Lagrangian multipliers and the nonlinear optimization problem is solved using optimum power flow (OPF) formulation based on the primal-dual interior point method. The priority list is obtained as a by-product of the Lagrangian multipliers associated with the ON-OFF decision. The efficiency of the proposed methodology is demonstrated through several tests. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:504 / 510
页数:7
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