On the empirical estimation of utility distribution damping parameters using power quality waveform data

Kyeon Hur, Surya Santoso, Irene Y.H. Gu

Research output: Contribution to journalArticle

4 Citations (Scopus)


This paper describes an efficient yet accurate methodology for estimating system damping. The proposed technique is based on 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 are used to quantify effective X/R ratio of a 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 a utility may take preventive measures and improve PQ of the system.

Original languageEnglish
Article number95328
JournalEurasip Journal on Advances in Signal Processing
Publication statusPublished - 2007 Apr 26


All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Information Systems
  • Hardware and Architecture
  • Electrical and Electronic Engineering

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