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Analysis of power supply possibilities through lithium batteries connected to the AC grid
2018/04/20 |
Abstract
In this paper we present a techno-economical
analysis of grid-connected lithium batteries. A time-of-use (TOU) electricity
tariff will be considered so that batteries can be charged during hours
of low electricity price and discharged during hours of high electricity
price. Four cases will be studied, depending if it is allowed or not to
inject electricity to the AC grid during the discharge of the batteries
and also depending if there is photovoltaic generator. Case 1: batteries
discharge just to meet the load (no electricity injection to the grid);
Case 2: Batteries discharge meet the load and also inject to the grid;
Case 3: Photovoltaic generator + case 1; Case 4: Photovoltaic generator
+ case 2. In all the cases, the Net Present Cost (NPC) is calculated.
All the cases are compared to the base case of supplying electricity without
batteries. The Li-ion battery cost must be reduced at least 70% to be
profitable in this applications.
In that case, if selling electricity to the AC grid is allowed and the
selling price is 70% of the price of the electricity, the battery system
can be a good option, with or without PV generator.
| Published in: Renewable Energy & Power Quality Journal (RE&PQJ, Nº. 16) | |
| Pages: 751-755 | Date of Publication: 2018/04/20 |
| ISSN: 2172-038X | Date of Current Version:2018/03/23 |
| REF: 456-18 | Issue Date: April 2018 |
| DOI:10.24084/repqj16.456 | Publisher: EA4EPQ |
Authors and affiliations
R. Dufo López1, S. Sanz Ortega1, J.S. Artal
Sevil1, M. Astaneh2, J. Lujano Rojas1, J.A. Domínguez Navarro1
and J.L. Bernal Agustín1
1. Department of Electrical Engineering. Escuela de Ingeniería
y Arquitectura. Universidad de Zaragoza (Spain)
2. Department of Energy Engineering. Sharif University of Technology.
Tehran, Iran
Key words
Grid-connected li-ion battery, net present cost, time-of-use electricity tariff, photovoltaic generator
References
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Techno-economic analysis of grid-connected battery storage. Energy Conversion
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[4] iHOGA software: https://ihoga-software.com/en/
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