Francesca Rossi, Oriol Gomis-Bellmunt
This study proposes a control strategy to ensure the safe operation of modern power systems with high penetration of inverter-based resources (IBRs) within an optimal operation framework. The objective is to obtain operating points that satisfy the optimality conditions of a predefined problem while guaranteeing small-signal stability. The methodology consists of two stages. First, an offline analysis of a set of operating points is performed to derive a data-driven regression-based expression that captures a damping-based stability index as a function of the operating conditions. Second, an Online Feedback Optimization (OFO) controller is employed to drive the system toward an optimal operating point while maintaining a secure distance from the instability region. The proposed strategy is evaluated on an academic test case based on a modified version of the IEEE 9-bus system, in which synchronous generators are replaced by IBRs operating under both grid-forming and grid-firming control modes. The results are discussed in detail.
@article{16ccde25-5116-4183-ad4e-dd7f615d7b61,
title={Small-Signal Stability Oriented Real-Time Operation of Power Systems with a High Penetration of Inverter-Based Resources},
author={Francesca Rossi and Oriol Gomis-Bellmunt},
year={2025},
language={en}
}TY - JOUR TI - Small-Signal Stability Oriented Real-Time Operation of Power Systems with a High Penetration of Inverter-Based Resources AU - Francesca Rossi AU - Oriol Gomis-Bellmunt PY - 2025 LA - en ER -
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