Open AccessBattery energy storage for increasing stability and reliability of an isolated Wind Diesel power system
Author(s) -
Sebastián Rafael
Publication year - 2017
Publication title -
iet renewable power generation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.005
H-Index - 76
ISSN - 1752-1424
DOI - 10.1049/iet-rpg.2016.0220
Subject(s) - wind power , battery (electricity) , automotive engineering , steam turbine , electric power system , reliability (semiconductor) , voltage , control theory (sociology) , power (physics) , ac power , engineering , turbine , energy storage , state of charge , electrical engineering , computer science , control (management) , physics , aerospace engineering , mechanical engineering , quantum mechanics , artificial intelligence
Wind–diesel power systems (WDPS) are isolated microgrids which combine diesel generators (DGs) with wind turbine generators (WTGs). The WDPS modelled in this study consists of one 275 kW‐WTG, one 300 kVA‐DG, a 240 V/390.625 Ah Ni–MH battery energy storage system (BESS) and consumer load. The WDPS working modes considered are: Wind Diesel (WD) mode where both the DG and WTG supply power and wind‐only (WO) mode where only the WTG produces active power. First, the dynamic models of the enumerated WDPS components are described. Then, WDPS control requirements in WD and WO modes are studied and a control system to govern the consumed/supplied BESS active power is presented. Finally, the WDPS is simulated and graphs of the system frequency and voltage, active power in each component and the battery current/voltage/state of charge are shown. The simulations cover: the WD mode, where it is shown that the BESS filters the load and WTG power variations and avoids a DG reverse power situation, the WD to WO mode transition where the BESS makes possible a bumpless transition and the WO mode where the BESS regulates the system frequency. Simulations demonstrate that the BESS increases the WDPS stability, reliability and security.