TY - GEN
T1 - A wavelet based power quality monitoring system - Considering noise effects
AU - Yang, Hong Tzer
AU - Liao, Chiung Chou
AU - Yang, Pai Chuan
AU - Huang, Kun Yuan
PY - 1999/1/1
Y1 - 1999/1/1
N2 - Based on the discrete wavelet transform (DWT), the power quality (PQ) monitoring system could easily and correctly detect and localize the disturbances in the power systems. However, once the signal under investigation is corrupted by noises, the performance of the DWT on detecting the disturbance would greatly degrade, due to the difficulty giving appropriate thresholds to eliminate the noises. To enhance the capability of the wavelet-based PQ monitoring system, this paper proposes a de-noising approach for detection of transient disturbance events in noisy environment. In the proposed denoising approach, the thresholds to eliminate the noises are adaptively determined according to the background noises, The abilities of the DWT in detecting and localizing the disturbances can hence be restored.
AB - Based on the discrete wavelet transform (DWT), the power quality (PQ) monitoring system could easily and correctly detect and localize the disturbances in the power systems. However, once the signal under investigation is corrupted by noises, the performance of the DWT on detecting the disturbance would greatly degrade, due to the difficulty giving appropriate thresholds to eliminate the noises. To enhance the capability of the wavelet-based PQ monitoring system, this paper proposes a de-noising approach for detection of transient disturbance events in noisy environment. In the proposed denoising approach, the thresholds to eliminate the noises are adaptively determined according to the background noises, The abilities of the DWT in detecting and localizing the disturbances can hence be restored.
UR - http://www.scopus.com/inward/record.url?scp=74949143605&partnerID=8YFLogxK
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U2 - 10.1109/PTC.1999.826656
DO - 10.1109/PTC.1999.826656
M3 - Conference contribution
AN - SCOPUS:74949143605
T3 - International Conference on Electric Power Engineering, PowerTech Budapest 1999
BT - International Conference on Electric Power Engineering, PowerTech Budapest 1999
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 1999 International Conference on Electric Power Engineering, PowerTech Budapest 1999
Y2 - 29 August 1999 through 2 September 1999
ER -
