An advanced method for eliminating impacts from frequency deviations in power system signal processing

Jiang, H. L., Tang, X. J., Dong, Z. Y. and Saha, T. K. (2003) An advanced method for eliminating impacts from frequency deviations in power system signal processing. Electric Power Systems Research, 67 3: 177-184.


Author Jiang, H. L.
Tang, X. J.
Dong, Z. Y.
Saha, T. K.
Title An advanced method for eliminating impacts from frequency deviations in power system signal processing
Journal name Electric Power Systems Research   Check publisher's open access policy
ISSN 0378-7796
Publication date 2003
Sub-type Article (original research)
DOI 10.1016/S0378-7796(03)00111-1
Volume 67
Issue 3
Start page 177
End page 184
Total pages 8
Editor B. Russell
Place of publication Switzerland
Publisher Elsevier Press
Collection year 2003
Language eng
Subject C1
290901 Electrical Engineering
660301 Electricity transmission
660304 Energy systems analysis
Abstract Frequency deviation is a common problem for power system signal processing. Many power system measurements are carried out in a fixed sampling rate assuming the system operates in its nominal frequency (50 or 60 Hz). However, the actual frequency may deviate from the normal value from time to time due to various reasons such as disturbances and subsequent system transients. Measurement of signals based on a fixed sampling rate may introduce errors under such situations. In order to achieve high precision signal measurement appropriate algorithms need to be employed to reduce the impact from frequency deviation in the power system data acquisition process. This paper proposes an advanced algorithm to enhance Fourier transform for power system signal processing. The algorithm is able to effectively correct frequency deviation under fixed sampling rate. Accurate measurement of power system signals is essential for the secure and reliable operation of power systems. The algorithm is readily applicable to such occasions where signal processing is affected by frequency deviation. Both mathematical proof and numerical simulation are given in this paper to illustrate robustness and effectiveness of the proposed algorithm. Crown Copyright (C) 2003 Published by Elsevier Science B.V. All rights reserved.
Keyword Engineering, Electrical & Electronic
Power System
Signal Processing
Frequency Deviation
Fourier Algorithm
Q-Index Code C1

 
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