Open AccessHybrid battery‐ultracapacitor storage system sizing for renewable energy network integration
Author(s) -
GonzalezGonzalez Jose M.,
Martin Sebastian,
Lopez Pablo,
Aguado Jose A.
Publication year - 2020
Publication title -
iet renewable power generation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.005
H-Index - 76
eISSN - 1752-1424
pISSN - 1752-1416
DOI - 10.1049/iet-rpg.2019.1310
Subject(s) - sizing , photovoltaic system , renewable energy , wind power , energy storage , automotive engineering , battery (electricity) , supercapacitor , stand alone power system , electric power system , computer science , engineering , electrical engineering , power (physics) , distributed generation , chemistry , physics , electrode , quantum mechanics , art , electrochemistry , visual arts
Wind and Solar photovoltaic power plants outputs are usually highly variable due to gusts of wind and sharp sun irradiance level variations caused by cloud shading effects. These effects negatively impact system security, especially in weak power networks. On the other hand, due to the recent technological progress and cost reductions, electrical energy storage systems are an attractive alternative that can be easily integrated into non‐despatchable power plants to compensate for those power output fluctuations. This study proposes a methodology for optimal sizing of a hybrid (lithium‐ion battery and ultracapacitor) energy storage system for renewable energy network integration. Special attention is paid to the battery cycling degradation process. It is shown that battery aging due to cycling is a major driver for optimal sizing. The resulting sizing problem is posed as a non‐linear programming problem. Finally, real and illustrative case studies are presented for both, wind and photovoltaic power plants integrating a hybrid energy storage system. Results are reported by comparing different energy storage system configurations.