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Appl. Sci. 2016, 6(12), 416;

Optimized Planning of Power Source Capacity in Microgrid, Considering Combinations of Energy Storage Devices

School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China
Guohua Energy Investment Co., Ltd., Beijing 100007, China
Author to whom correspondence should be addressed.
Academic Editors: Frede Blaabjerg and Yongheng Yang
Received: 11 October 2016 / Revised: 23 November 2016 / Accepted: 2 December 2016 / Published: 9 December 2016
(This article belongs to the Special Issue Advancing Grid-Connected Renewable Generation Systems)
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Since renewable energy resource is universally accepted as a promising method to solve the global energy problem, optimal planning and utilization of various distributed generators (DG) and energy storage (ES) devices deserve special concern. ES devices possess various characteristics in power density, energy density, response speed (switching speed) and lifetime. Besides, as different load types have various requirements on power supply reliability according to their importance, coordinated planning with consideration of reasonable matching between power source and load can efficiently improve power supply reliability and economic efficiency via a customized power supply and compensation strategy. This paper focuses on optimization of power source capacity in microgrid and a coordinated planning strategy is proposed with integrated consideration of characteristics of DG, ES and load. An index named additional compensation ratio (ACR) for balancing economic efficiency and reliability is proposed and considered in the strategy. The objective function which aims to minimize life cycle cost (LCC) is established considering economic efficiency, reliability and environmental conservation. The proposed planning strategy and optimizing model is calculated and verified through case study of an autonomy microgrid. View Full-Text
Keywords: microgrid; distributed generation; super capacitor; battery energy storage system (BESS) microgrid; distributed generation; super capacitor; battery energy storage system (BESS)

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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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Liu, Z.; Chen, Y.; Luo, Y.; Zhao, G.; Jin, X. Optimized Planning of Power Source Capacity in Microgrid, Considering Combinations of Energy Storage Devices. Appl. Sci. 2016, 6, 416.

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