Using a proportional function for the control coefficient in Battery Energy Storage Systems (BESS) provides several benefits, particularly in the context of frequency regulation:
Benefits of a Proportional Control Coefficient
- Adaptive Frequency Support:
- A control coefficient that is proportional to both the instantaneous state of charge of the BESS and the system frequency excursions allows for adaptive frequency support. This means the BESS can adjust its power output based on the current state of charge and the immediate frequency needs of the grid, preventing over-discharging and enhancing system stability.
- Improved Frequency Regulation Capability:
- The proportional control strategy can enhance the BESS’s ability to stabilize grid frequency by rapidly responding to frequency deviations, thus reducing the maximum frequency excursion and rate of change of frequency (ROCOF).
- Efficient Use of Stored Energy:
- By directly linking the control coefficient to the state of charge and grid frequency conditions, the system ensures that stored energy is used efficiently only when needed, minimizing unnecessary discharge and maintaining optimal battery health.
- Flexibility and Robustness:
- The proportional nature allows for greater flexibility in responding to varying grid conditions, providing robustness against a wide range of system disturbances and ensuring reliable grid stability services.
- Optimized System Performance:
- It helps in optimizing system performance metrics such as settling frequency and maximum frequency deviation, thereby contributing to enhanced overall grid stability and reliability under different operating conditions.
In summary, using a proportional function for the control coefficient in BESS allows for dynamic, efficient, and robust frequency regulation, which is crucial for maintaining grid stability in systems with significant renewable energy integration.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/what-are-the-benefits-of-using-a-proportional-function-for-the-control-coefficient-in-bess/
