A Compression Method for Power Quality Data

Power Quality Data Compression

application of upfc based on svpwm for power quality improvement

در سالهای اخیر،اختلالات کیفیت توان مهمترین موضوع می باشد که محققان زیادی را برای پیدا کردن راه حلی برای حل آن علاقه مند ساخته است.امروزه کیفیت توان در سیستم قدرت برای مراکز صنعتی،تجاری وکاربردهای بیمارستانی مسئله مهمی می باشد.مشکل ولتاژمثل شرایط افت ولتاژواضافه جریان ناشی از اتصال کوتاه مدار یا وقوع خطا در سیستم بیشتر مورد توجه می باشد. برای مطالعه افت ولتاژ واضافه جریان،محققان زیادی کار کرده ...

Compression of power quality event data using 2D representation

This paper introduces the energy compaction efficiency of a novel two-dimensional (2D) representation for compression of recorded power uality event data. The 2D representation enables to exploit redundancy across vertical samples that correspond to samples which are far from ach other in time. In one-dimension (1D), compression algorithms are unable to depict the correlation between such far a...

Power Quality Data Compression Using Principal Component Analysis

With the increasing of non-linear, burst or un-balanced load, power quality issues in the grid is becoming important. With more power quality monitors installed with higher sampling rates, an expanded size of power quality data brings difficulty to storage, transmission and analysis. In this paper, principal component analysis (PCA), which is a popular feature extraction algorithm in pattern re...

Power Quality Disturbance Data Compression Using Wavelets Transform

Abstract---In this paper we present a wavelet compression technique for power quality disturbance data. Power quality transient data are compressed and stored for analysis and classification purposes. Original data can be reconstructed and then analyzed using wavelet transform. Different power quality disturbances including voltage sag, swell, sag with harmonic and swell with harmonics are used...