Modified PSO algorithm for real-time energy management in grid-connected microgrids

被引:203
作者
Hossain, Md Alamgir [1 ,2 ]
Pota, Hemanshu Roy [1 ]
Squartini, Stefano [3 ]
Abdou, Ahmed Fathi [1 ]
机构
[1] Univ New South Wales, Sch Engn & Informat Technol, Canberra, ACT 2610, Australia
[2] Dhaka Univ Engn & Technol, Dept Elect & Elect Engn, Gazipur, Bangladesh
[3] Univ Politecn Marche, Dept Informat Engn, Ancona, Italy
关键词
Converter-based microgrids; Renewable energy sources; Optimum battery control; Real-time energy management; particle swarm optimisation; OPTIMIZATION; STORAGE; SYSTEM; STABILITY;
D O I
10.1016/j.renene.2019.01.005
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In real-time energy management of a converter-based microgrid, it is difficult to determine optimal operating points of a storage system in order to save costs and minimise energy waste. The complexity arises due to time-varying electricity prices, stochastic energy sources and power demand. Many countries have imposed real-time electricity pricing to efficiently control demand side management. This paper presents a particle swarm optimisation (PSO) for the application of real-time energy management to find optimal battery controls of a community microgrid. The modification of the PSO consists in altering the cost function to better model the battery charging/discharging operations. As optimal control is performed by formulating a cost function, it is suitably analysed and then a dynamic penalty function is proposed in order to obtain the best cost function. Several case studies with different scenarios are conducted to determine the effectiveness of the proposed cost function. The proposed cost function can reduce operational cost by 12% as compared to the original cost function over a time horizon of 96 h. Simulation results reveal the suitability of applying the regularised PSO algorithm with the proposed cost function, which can be adjusted according to the need of the community, for real-time energy management. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页码:746 / 757
页数:12
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