Title :
A new battery energy storage system control method based on SOC and variable filter time constant
Author :
Guo, Li ; Zhang, Ye ; Wang, Cheng Shan
Author_Institution :
Key Lab. of Smart Grid of Minist. of Educ., Tianjin Univ., Tianjin, China
Abstract :
Because of large fluctuations and strong randomness of active power generated by renewable energy resources, taking into account the constraints such as battery life cycle, a new battery energy storage system control method based on real-time state-of-charge and variable filter time constant is presented. This method could compensate the fluctuation composition of a particular frequency band of power. At the same time, filter time constant is adjusted in order to stabilize the value of SOC in a certain range, and over-charging and over-discharging of the battery is avoided. A photovoltaic (PV) and battery hybrid system modeled by PSCAD is tested to verify the validity of this method.
Keywords :
battery chargers; battery storage plants; photovoltaic power systems; power filters; renewable energy sources; PSCAD; active power generation; battery energy storage system control; battery hybrid system; battery life cycle; fluctuation composition; over-charging; over-discharging; photovoltaic system; real-time state-of-charge; renewable energy resources; variable filter time constant; Batteries; Fluctuations; Inverters; Low pass filters; Smoothing methods; System-on-a-chip; Battery energy storage system; SOC; filter time constant;
Conference_Titel :
Innovative Smart Grid Technologies (ISGT), 2012 IEEE PES
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4577-2158-8
DOI :
10.1109/ISGT.2012.6175627
