LIFTING BASED COMPRESSION ALGORITHM FOR POWER SYSTEM SIGNALS
Journal Title: Metrology and Measurement Systems - Year 2008, Vol 15, Issue 1
Abstract
The paper concerns the problem of power system signals compression with possible application in system monitoring and control. The proposed compression algorithm for power system signals ensures efficient use of available storage memory or communication channel bandwidth. It is shown that while preserving good quality, compression ratios from 20 in case of highly distorted waveforms to 340 for slightly distorted sinusoidal waves can be achieved. The presented results were evaluated with a specially prepared representative database of field-recorded electric signals. For signal decorrelation lifting implementation of wavelet transform in the compression algorithm was used. The influence of sampling frequency, length of data frame, type of wavelet function, number of wavelet decomposition stages and quantization level on the compression ratio and compression quality was investigated.
Authors and Affiliations
KRZYSZTOF DUDA
Keywords
Related Articles
- EP ID EP123830
- DOI -
- Views 59
- Downloads 0
SELF-CONFIGURING MEASUREMENT NETWORKS
This discussion paper presents issues in the design of self-configuring networked measurement systems. Key requisites are summarized at first. Then, architectural features will be analyzed in order to let a designer be a...
REVISING THE SI: THE JOULE TO REPLACE THE KELVIN AS A BASE UNIT
The joule is proposed to replace the kelvin in the set of SI base units. Arguments in favour of such replacement are presented, including improved standard accuracy and unit system coherence. The joule is also proposed t...
EXPLORING NEW FRONTIERS OF INSTRUMENTATION AND METHODS<br /> FOR ELECTRICAL AND ELECTRONIC MEASUREMENTS IN LIGHT OF THE IMEKO TC4 SYMPOSIUM IN FLORENCE, ITALY, SEPTEMBER 2008
From 21st to 24th September 2008, at the University of Florence, Morgagni Conference Center, significant scientific events took place , held under the auspices of the International Measurement Confederation. These events...
SIMULATION OF VORTEX STREET DEVELOPMENT USING MODEL WITH MODIFICATIONS<br />
Two modifications of the analytical model of the vortex street development described in [1] have been proposed and simulated. The first one takes into consideration the movement of the stagnation region accordingly to vo...
DYNAMIC MODELS OF ION-SELECTIVE ELECTRODES WITH THEIR ELECTRONIC INTERFACE
Dynamic models of an ion-selective electrode are analysed in this article taking into account the independence of values of its dynamic parameters from the value and direction of activity change. Unfortunately, a complic...