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Mathematical Problems in Engineering
Volume 2014, Article ID 871540, 8 pages
Research Article

Improved Multiobjective Harmony Search Algorithm with Application to Placement and Sizing of Distributed Generation

1Power Distribution Department, Electric Power Research Institute of China, No. 15, Xiaoying East Road, Qinghe, Haidian District, Beijing 100192, China
2School of Automation Science and Electrical Engineering, Beihang University, No. 37, Xuanyuan Road, Haidian District, Beijing 100191, China

Received 27 January 2014; Accepted 22 March 2014; Published 10 April 2014

Academic Editor: Her-Terng Yau

Copyright © 2014 Wanxing Sheng et al. 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.


To solve the comprehensive multiobjective optimization problem, this study proposes an improved metaheuristic searching algorithm with combination of harmony search and the fast nondominated sorting approach. This is a kind of the novel intelligent optimization algorithm for multiobjective harmony search (MOHS). The detailed description and the algorithm formulating are discussed. Taking the optimal placement and sizing issue of distributed generation (DG) in distributed power system as one example, the solving procedure of the proposed method is given. Simulation result on modified IEEE 33-bus test system and comparison with NSGA-II algorithm has proved that the proposed MOHS can get promising results for engineering application.