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Enhancing Small-Signal Stability of Multi-Machine Power Systems Using PMU Data | ||
| International Journal of Industrial Electronics Control and Optimization | ||
| مقاله 6، دوره 9، شماره 1، خرداد 2026، صفحه 65-76 اصل مقاله (1.09 M) | ||
| نوع مقاله: Research Articles | ||
| شناسه دیجیتال (DOI): 10.22111/ieco.2025.52876.1713 | ||
| نویسندگان | ||
| Mahdi HassanniaKheibari* ؛ Zivar Rigi | ||
| Department of Electrical Engineering, ZAH.C., Islamic Azad University, Zahedan, Iran. | ||
| چکیده | ||
| As power systems rapidly expand and the demand for uninterrupted power supply to network loads increases, ensuring the safe and stable operation of these systems has become crucially important. However, conducting dynamic stability assessments with detailed dynamic models is nearly impossible in today’s complex power networks. The introduction of Phasor Measurement Units (PMUs) has paved the way for new stability evaluation techniques that rely on real-time measurement data. A common limitation of most measurement-based techniques is their vulnerability to noise in the data. While some newer methods offer improved noise resistance, they are often hindered by high computational demands and slow processing times, limiting their practical use. This paper developed a measurement-based method that uses power spectral density (PSD) and cross-spectral density (CSD) to achieve a more precise estimation of low-frequency oscillations in power systems. Simulation results on the IEEE 14-bus and 39-bus test systems, tested under both noisy and noise-free conditions, show that the proposed method yields more accurate frequency and oscillation shape estimates, even when measurement noise is present. Additionally, the Prony algorithm, a well-known measurement-based method, is also implemented, and its high sensitivity to noisy data is demonstrated. | ||
| کلیدواژهها | ||
| PMU data؛ PSD and CSD methods؛ small signal؛ stability analysis؛ 14-bus IEEE system | ||
| مراجع | ||
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