Computationally Efficient Impedance Scanning Approach for Inverter-based Resources
50th Annual Conference of the IEEE Industrial Electronics Society, IECON 2024, Illinois, United States Of America, 3 - 06 November 2024, (Full Text)
- Publication Type: Conference Paper / Full Text
- Doi Number: 10.1109/iecon55916.2024.10905133
- City: Illinois
- Country: United States Of America
- Keywords: electromagnetic transient simulation, frequency scanning schemes, impedance-based stability analysis, SSCI, wind park
- Middle East Technical University Affiliated: No
Abstract
Impedance-based stability assessment (IBSA) is an effective method to study sub-synchronous control interaction (SSCI) with inverter-based resources (IBRs) in modern power systems. An IBR's required frequency-dependent impedance model can be obtained via the positive sequence scanning method. In this paper, single-sinusoidal signal and multi-sinusoidal signal-based methods for frequency scanning are investigated and evaluated. To benefit from the advantages of both schemes, hybrid scanning is proposed including perturbation signal, amplitude, and frequency segmentation settings. Additionally, a modified quadratic phase shift scheme is proposed for reducing the high magnitudes of multi-sinusoidal signals. All methods are validated and compared using the average value model of a doubly fed induction generator. The guidelines and recommendations are provided for the proper usage of the proposed hybrid scanning in the sub-synchronous frequency range.