Identification and tracking of harmonic sources in a power system using a Kalman filter

Ma, H.; Girgis, A.A.

doi:10.1109/61.517531

Cited by 141 publications

(12 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The state vectors at the th k and   th 1 k  sampling instant, state transition matrix   D and measurement matrix   H of the LKF are given by (15), (16), (17) and (18), respectively, where T denotes the transpose operation. The transition matrix given in (17) is obtained from the expressions (15) and (16).…”

Section: Rejection Of DC Offset and Harmonicsmentioning

confidence: 99%

See 1 more Smart Citation

Grid voltage offset and harmonics rejection using second order generalized integrator and kalman filter technique

Reza

Ciobotaru

Agelidis

2012

Proceedings of the 7th International Power Electronics and Motion Control Conference

View full text Add to dashboard Cite

This paper proposes the application of second order generalized integrator (SOGI) and Kalman filter (KF) technique for the rejection of DC offset and harmonics from the distorted grid voltage waveform. The SOGI is used to estimate the orthogonal waveforms of grid voltage fundamental frequency component. On the other hand, the linear Kalman filter (LKF) is used to reject the DC offset and harmonics present in the distorted grid voltage waveform. The resonance and harmonic frequencies of the SOGI and LKF, respectively, are provided by the frequency locked loop (FLL). The proposed technique provides better results to reject the DC offset and harmonics as compared to the multiple SOGI (MSOGI) technique. The improved performance of the proposed technique is due to the use of LKF which not only rejects the DC offset and harmonics but also non-sensitive to the change of SOGI's gain. Synthetically generated grid voltage waveforms are used in MATLAB/Simulink to depict the superior performance of the proposed SOGI-LKF technique as compared to the MSOGI with/without offset rejection technique. Keywords-DC Offset; frequency locked loop (FLL); linear Kalman filter (LKF); second order generalized integrator (SOGI)

show abstract

Section: Rejection Of DC Offset and Harmonicsmentioning

confidence: 99%

“…The orthogonal waveforms of grid fundamental frequency component are extracted using the SOGI. On the other hand, the DC offset and harmonics are rejected using the LKF [15][16][17] . The results of the proposed technique are compared with the MSOGI technique.…”

Section: Introductionmentioning

confidence: 99%

Grid voltage offset and harmonics rejection using second order generalized integrator and kalman filter technique

Reza

Ciobotaru

Agelidis

2012

Proceedings of the 7th International Power Electronics and Motion Control Conference

View full text Add to dashboard Cite

show abstract

“…The time-frequency techniques merge the advantages of the time-domain and frequency-domain techniques, but they are mathematically complicated as shown by Barros and Diego (2008). State-estimation or state-space techniques have been developed to attain the merits of both time-domain and frequency-domain techniques as explained by Dash et al (1997), Haili and Girgis (1996), Soliman and El-hawary (2000), Karimi et al (2003), and Banas (1975). Nevertheless, the state-estimation techniques are superior to the traditional ones, they have some shortcomings.…”

Section: Introductionmentioning

confidence: 96%

“…Nevertheless, the state-estimation techniques are superior to the traditional ones, they have some shortcomings. For instance, the Kalman filter has mathematical burden as shown by Haili and Girgis (1996). The least-absolute value shares the Kalman filter the same shortcoming as illustrated by Soliman and El-hawary (2000).…”

Section: Introductionmentioning

confidence: 96%

An efficient current regulator for a power conditioner operated by an innovative strategy

Elnady¹,

Liu

2012

IJPELEC

View full text Add to dashboard Cite

This paper presents an innovative implementation of the recursive Gauss-Newton (GN) algorithm for extraction of the common current quality problems such as the current harmonics and current fluctuation. This paper introduces also the utilisation of the adaptive notch filters to efficiently track the unknown frequencies of the current disturbances. The paper exhibits the mitigation results for these current disturbances using a shunt power conditioner. Furthermore, the adopted shunt power conditioner is operated by the ramp-comparison current regulator. Also, the paper proves that the utilisation of the ramp-comparison current controller, (the linear current controller), is more meritorious than the commonly used current controller, which is the hysteresis current controller, (HCC). The effectiveness of the developed extraction technique with the employed current controller is verified by the simulation and experimental results.

show abstract

“…In [5], HSE is performed by using the least-square based state estimation to compute the frequency spectra at various buses that are suspected as harmonic sources. The authors in [6] have identified and tracked the harmonic sources present in the power system using the conventional Kalman filter technique. In [7], wavelet transform is described as more suitable for small frequency varying signals; however, this method suffers from a high computational burden.…”

Section: Introductionmentioning

confidence: 99%

Reverse harmonic load flow analysis using an evolutionary technique

Vedik

Shiva

Harish*³

2020

SN Appl. Sci.

View full text Add to dashboard Cite

In the present paper, a new approach to estimate the harmonic distortions is proposed by considering the existence of harmonic sources in the power system. The algorithm employs a differential evolution technique by formulating the reverse harmonic load flow problem for each harmonic order and by considering a limited number of phasor measurement units (PMUs) deployed across the power system. The technique utilizes the measured voltage and current harmonics obtained using synchronized PMUs with known transmission network as input data. The proposed technique estimates the harmonic voltage phasors at the unmonitored buses of the power system with reasonable accuracy. The effectiveness and efficiency of the proposed method is validated by applying it to five bus and IEEE 14-bus test systems by considering uncertainty in measurement noise. It is shown that the proposed approach yields optimum solution and provides reliable and accurate harmonic state estimates.

show abstract

Identification and tracking of harmonic sources in a power system using a Kalman filter

Cited by 141 publications

References 10 publications

Grid voltage offset and harmonics rejection using second order generalized integrator and kalman filter technique

Grid voltage offset and harmonics rejection using second order generalized integrator and kalman filter technique

An efficient current regulator for a power conditioner operated by an innovative strategy

Reverse harmonic load flow analysis using an evolutionary technique

Contact Info

Product

Resources

About