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On the Empirical Estimation of Utility Distribution Damping Parameters using Power Quality Waveform Data

Kyeon Hur ; Surya Santoso ; Irene Y.H. Gu (Institutionen för signaler och system, Signalbehandling)
EURASIP Journal on Advances in Signal Processing (1687-6172). p. 12 pages (Article ID 95328). (2007)
[Artikel, refereegranskad vetenskaplig]

Efficient yet accurate methodology for estimating the system damping is described in this paper. The proposed technique is based on the linear dynamic system theory and the Hilbert damping analysis. The proposed technique requires capacitor switching waveforms only. The detected envelope of the intrinsic transient portion of the voltage waveform after capacitor bank energizing and its decay rate along with the damped resonant frequency can quantify effective X/R ratio of the system. Thus, the proposed method provides complete knowledge of system impedance characteristics. The estimated system damping can also be used to evaluate the system vulnerability to various PQ disturbances, particularly, resonance phenomena, so that the utility may take preventive measures and improve PQ the system.

Nyckelord: System damping, X/R ratio, capacitor switching transient, Hilbert transform, curve fitting, damped resonant frequency, power quality

Denna post skapades 2007-01-19. Senast ändrad 2014-01-29.
CPL Pubid: 25865


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Institutioner (Chalmers)

Institutionen för signaler och system, Signalbehandling (1900-2017)



Chalmers infrastruktur