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A new battery energy storage system control method based on SOC and variable filter time constant

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3 Author(s)
Li Guo ; Key Laboratory of Smart grid of Ministry of Education, Tianjin University, 300072, China ; Ye Zhang ; Cheng Shan Wang

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.

Published in:

2012 IEEE PES Innovative Smart Grid Technologies (ISGT)

Date of Conference:

16-20 Jan. 2012