RoCoF Threshold-Based Gain Scheduling for FFR Implementation in High Renewable Power Systems
Part Of
13th International Conference on Renewable Energy Research and Applications, ICRERA 2024
Start Page
644
End Page
649
ISBN
979-835037558-9
Date Issued
2024-11-09
Author(s)
Meng-Yun Lee
DOI
10.1109/ICRERA62673.2024.10815359
Abstract
The increasing integration of Inverter-Based Resources (IBRs) in power systems reduces system inertia, leading to rapid Rates of Change of Frequency (RoCof) and posing challenges for frequency regulation. This study introduces a gain scheduling strategy for Fast Frequency Response (FFR) that leverages RoCoF thresholds to maintain frequency above predefined levels with minimal control gains. The method employs a RoCoF controller to regulate FFR, effectively reducing RoCoF in the power system. By adopting an analytical approach, this strategy calculates the frequency nadir directly from real-time measurements of frequency and RoCoF, eliminating the traditional need for power loss measurements and precise event timing. The critical control gain, determined based on triggering conditions, remains constant throughout the disturbance, ensuring a consistent response. Extensively validated across diverse system conditions, our methodology effectively estimates frequency dynamics and adjusts control gains accordingly, thus enhancing operational efficiency and ensuring robust frequency regulation in scenarios with varying system inertia and contingencies.
Event(s)
13th International Conference on Renewable Energy Research and Applications, ICRERA 2024
SDGs
Publisher
Institute of Electrical and Electronics Engineers Inc.
Type
conference paper