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一种绿色蜂窝网络的混合能量共享框架

A Hybrid Energy Sharing Framework for Green Cellular Networks

Muhammad Junaid Farooq, Hakim Ghazzai, Abdullah Kadri, Hesham ElSawy, Mohamed-Slim Alouini

摘要:

移动运营商越来越多地转向可再生能源(RE)作为使用传统电力的替代方案,以减少运营支出和碳足迹。由于每个基站(BS)处的RE生成和移动业务的随机性,能量的过剩或不足可能在任何给定时间发生。为了增加能量的自依赖性并最小化网络的能量成本,运营商需要有效地利用跨所有BS生成的RE。在本文中,提出了一种混合的蜂窝网络的能量共享框架,其中使用的物理电力线和能量交易与其他BS使用智能电网的组合。基于平均和完全统计的净RE可用的BS之间的物理电力线部署的算法,开发。之后,制定了一个能源管理框架,以最佳地确定要采购的电力和可再生能源的数量和交换BS之间,分别,同时考虑电池容量和实时能源定价。三种情况下,RE生成是未知的,完全已知的,部分提前知道。结果调查时变能源管理的BS和表现出相当大的减少平均能源成本由于混合能源共享计划。

英文摘要:

Cellular operators are increasingly turning towards renewable energy (RE) as an alternative to using traditional electricity in order to reduce operational expenditure and carbon footprint. Due to the randomness in both RE generation and mobile traffic at each base station (BS), a surplus or shortfall of energy may occur at any given time. To increase energy self-reliance and minimize the network's energy cost, the operator needs to efficiently exploit the RE generated across all BSs. In this paper, a hybrid energy sharing framework for cellular network is proposed, where a combination of physical power lines and energy trading with other BSs using smart grid is used. Algorithms for physical power lines deployment between BSs, based on average and complete statistics of the net RE available, are developed. Afterwards, an energy management framework is formulated to optimally determine the quantities of electricity and RE to be procured and exchanged among BSs, respectively, while considering battery capacities and real-time energy pricing. Three cases are investigated where RE generation is unknown, perfectly known, and partially known ahead of time. Results investigate the time varying energy management of BSs and demonstrate considerable reduction in average energy cost thanks to the hybrid energy sharing scheme.

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