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Small-Signal Stability Oriented Real-Time Operation of Power Systems with a High Penetration of Inverter-Based Resources

Francesca Rossi, Juan Carlos Olives-Camps

2025enpower systemsstabilitycontroloptimizationrenewable energy

Abstract

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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-following and grid-forming control modes. The results demonstrate the effectiveness of the method and are discussed in detail.

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Cite This Work

@article{3e91571a-cafd-43dc-86bd-377511efd854,
  title={Small-Signal Stability Oriented Real-Time Operation of Power Systems with a High Penetration of Inverter-Based Resources},
  author={Francesca Rossi and Juan Carlos Olives-Camps},
  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  - Juan Carlos Olives-Camps
PY  - 2025
LA  - en
ER  -

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