A Dynamic Filter for Removal DC - Offset In Current and Voltage Waveforms
In power systems, protective relays must filter their
inputs to remove undesirable quantities and retain signal quantities of
interest. This job must be performed accurate and fast. A new
method for filtering the undesirable components such as DC and
harmonic components associated with the fundamental system
signals. The method is s based on a dynamic filtering algorithm. The
filtering algorithm has many advantages over some other classical
methods. It can be used as dynamic on-line filter without the need of
parameters readjusting as in the case of classic filters. The proposed
filter is tested using different signals. Effects of number of samples
and sampling window size are discussed. Results obtained are
presented and discussed to show the algorithm capabilities.
[1] M.S. Sachdev and M.A. Baribeau, A new algorithm for digital
impedance relays, IEEE Trans. Power App. & Syst. Vol. Pas-98, pp.253-
260, Dec.
[2] G. Benmouyal, Removal Of Dc- Offset In Current Waveforms Using
Digital Mimic Filtering, Ieee Trans. On Power Delivery, Vol. 10, No. 2,
April 1995.
[3] A.A.Girgis, R.G.Brown, Application Of Kalman Filtering In Computer
Relaying, Ieee.Trans. Pas-101, No.9, Sept.1981, Pp.3387-3397.
[4] H.J. Altuve F, I Diaz V., Ernesto Vazquez M, Fourier And Walsh
Digital Filtering Algorithms For Distance Protection, Ieee Trans. On
Power Systems, Vol. 11, No. 1, Feb. 1996.
[5] Jyh- Cheng Gu, Removal Of Dc Offset In Current And Voltage Signals
Using A Novel Fourier Filter Algorithm, Ieee Trans. On Power Delivery,
Vol. 15, No. 1, Jan. 2000.
[6] ] A. M. Gaouda, M.M.A.Salama, M.R.Sultan And A.Y.Chikhani,
Application Of Multiresolution Signal Decomposition For Monitoring
Short- Duration VariatioIn Distribution Systems, Ieee Trans. On Power
Delivery, Vol. 15,No. 2, April 2000.
[7] P. Suresh Babu and S. V. Jayaram Kumar, "A Novel Algorithm To
Extract Exact Fundamental Frequency Components During Faults For
Digital Protection Of Power System", ARPN Journal Of Engineering
And Applied Sciences, vol. 4, no. 10, December 2009, pp. 78-82.
[8] Eisa, A.A.A.; Ramar, K., Removal of decaying DC offset in current
signals for power system phasor estimation, Proc. of 43rd International
Universities Power Engineering Conference, Padova, UPEC 2008 ,
pp.1-4
[9] Stoon- Ryul Nam, Sang- Hee Kang, And Jong- Keun Park, An Analytic
Method For Measuring Accurate Fundamental Frequency Components,
IEEE Trans. On Power Delivery, Vol. 17, No. 2, April 2002.
[10] Wael M.Al-Hasawi, Khaled M.El-Naggar, "A Genetic Based Filter
Algorithm for Removal of DC Offset In Current And Voltage Signals
Using ", The 4th IASTED International Conference On Power And
Energy Systems (Europes 2004), Rhodes, Greece, June 2004.
[11] G.S. Christensen And S.A. Soliman, "Optimal Filtering Of Linear
Discrete Dynamic Systems Based On Least Absolute Value
Approximations", Automatica, 1990, Vol. 26, No. 2.
[1] M.S. Sachdev and M.A. Baribeau, A new algorithm for digital
impedance relays, IEEE Trans. Power App. & Syst. Vol. Pas-98, pp.253-
260, Dec.
[2] G. Benmouyal, Removal Of Dc- Offset In Current Waveforms Using
Digital Mimic Filtering, Ieee Trans. On Power Delivery, Vol. 10, No. 2,
April 1995.
[3] A.A.Girgis, R.G.Brown, Application Of Kalman Filtering In Computer
Relaying, Ieee.Trans. Pas-101, No.9, Sept.1981, Pp.3387-3397.
[4] H.J. Altuve F, I Diaz V., Ernesto Vazquez M, Fourier And Walsh
Digital Filtering Algorithms For Distance Protection, Ieee Trans. On
Power Systems, Vol. 11, No. 1, Feb. 1996.
[5] Jyh- Cheng Gu, Removal Of Dc Offset In Current And Voltage Signals
Using A Novel Fourier Filter Algorithm, Ieee Trans. On Power Delivery,
Vol. 15, No. 1, Jan. 2000.
[6] ] A. M. Gaouda, M.M.A.Salama, M.R.Sultan And A.Y.Chikhani,
Application Of Multiresolution Signal Decomposition For Monitoring
Short- Duration VariatioIn Distribution Systems, Ieee Trans. On Power
Delivery, Vol. 15,No. 2, April 2000.
[7] P. Suresh Babu and S. V. Jayaram Kumar, "A Novel Algorithm To
Extract Exact Fundamental Frequency Components During Faults For
Digital Protection Of Power System", ARPN Journal Of Engineering
And Applied Sciences, vol. 4, no. 10, December 2009, pp. 78-82.
[8] Eisa, A.A.A.; Ramar, K., Removal of decaying DC offset in current
signals for power system phasor estimation, Proc. of 43rd International
Universities Power Engineering Conference, Padova, UPEC 2008 ,
pp.1-4
[9] Stoon- Ryul Nam, Sang- Hee Kang, And Jong- Keun Park, An Analytic
Method For Measuring Accurate Fundamental Frequency Components,
IEEE Trans. On Power Delivery, Vol. 17, No. 2, April 2002.
[10] Wael M.Al-Hasawi, Khaled M.El-Naggar, "A Genetic Based Filter
Algorithm for Removal of DC Offset In Current And Voltage Signals
Using ", The 4th IASTED International Conference On Power And
Energy Systems (Europes 2004), Rhodes, Greece, June 2004.
[11] G.S. Christensen And S.A. Soliman, "Optimal Filtering Of Linear
Discrete Dynamic Systems Based On Least Absolute Value
Approximations", Automatica, 1990, Vol. 26, No. 2.
@article{"International Journal of Electrical, Electronic and Communication Sciences:58259", author = "Khaled M.EL-Naggar", title = "A Dynamic Filter for Removal DC - Offset In Current and Voltage Waveforms", abstract = "In power systems, protective relays must filter their
inputs to remove undesirable quantities and retain signal quantities of
interest. This job must be performed accurate and fast. A new
method for filtering the undesirable components such as DC and
harmonic components associated with the fundamental system
signals. The method is s based on a dynamic filtering algorithm. The
filtering algorithm has many advantages over some other classical
methods. It can be used as dynamic on-line filter without the need of
parameters readjusting as in the case of classic filters. The proposed
filter is tested using different signals. Effects of number of samples
and sampling window size are discussed. Results obtained are
presented and discussed to show the algorithm capabilities.", keywords = "Protection, DC-offset, Dynamic Filter, Estimation.", volume = "5", number = "2", pages = "195-5", }