Effective economic dispatch model and algorithm

被引:44
作者
Han, X. S.
Gooi, H. B. [1 ]
机构
[1] Nanyang Technol Univ, Power Market Res Grp, Singapore, Singapore
[2] Shandong Univ, Dept Elect Engn, Jinan, Peoples R China
基金
中国国家自然科学基金;
关键词
economic dispatch; optimization; network constraints; spinning reserve; ramp constraints; linear programming;
D O I
10.1016/j.ijepes.2006.05.007
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
Under the electric power market environment, economic dispatch (ED) as part of the on-line Automatic Generation Control (AGC) problem considers unit, network and system constraints. For the ED problem, it is important to establish an effective model and algorithm. This paper examines the decoupled conditions that affect the solution optimality to this problem. It proposes an effective model and solution method. Based on the look-ahead technique, it finds the number of time intervals to guarantee the solution optimality. Next, an efficient technique for finding the optimal solution via the Interior-Point Method (IPM) based linear programming is described. Test cases, which include dispatching fourteen units over 10 time intervals on the test system with line flows, spinning reserve and ramp constraints are presented. Results indicate that as problem size increases the computational effort as measured by execution time increases dramatically if the optimal look-ahead time interval is not used. (C) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:113 / 120
页数:8
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