SOC-aware Primary Frequency Control of Low-inertia Power Systems with Battery Energy Storage
Document Type
Conference Proceeding
Publication Date
1-1-2023
Abstract
The state of charge (SOC) of battery energy storage system (BESS) is modeled and integrated into the primary frequency control of a low-inertia power system. This is achieved by developing a new state-space model of the system, which includes the SOC dynamics, and using it to design a piece-wise linear SOC controller that prohibits the BESS depletion beyond the minimum allowable range. The controller design and its effect on the system stability are studied based on Popov/circle criterion, which is commonly used for piece-wise linear systems. The developed system model is validated by MATLAB simulations, and the real-time implementation feasibility of the proposed SOC-aware primary frequency control is verified through real-time simulations of a low-inertia power system with varying load conditions.
Publication Source (Journal or Book title)
2023 IEEE Texas Power and Energy Conference, TPEC 2023
Recommended Citation
Afshar, Z., Rahmanei, H., Bhogaraju, I., & Farasat, M. (2023). SOC-aware Primary Frequency Control of Low-inertia Power Systems with Battery Energy Storage. 2023 IEEE Texas Power and Energy Conference, TPEC 2023 https://doi.org/10.1109/TPEC56611.2023.10078647
