Dynamic Phasor and Frequency Estimators Considering Decaying DC Components

Kun, Rui; Fu, Ling; Zhang, Dong; Wong, Kit Po; Bo, Z.Q.; Xu, Hai Bo

doi:10.1109/tpwrs.2011.2167162

Cited by 46 publications

(10 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In general, the accuracy of the measurement is highly affected by the noise in the power system [24], [25]. Hence, in order to verify the adaptability of the proposed method in a noisy environment, the Gaussian white noise (GWN) is added to the signal expressed in (25).…”

Section: Noise Analysismentioning

confidence: 99%

See 1 more Smart Citation

Multi-Interharmonic Spectrum Separation and Measurement Under Asynchronous Sampling Condition

Sun

Zang

et al. 2016

IEEE Trans. Instrum. Meas.

View full text Add to dashboard Cite

Steady signals of a power system sampled asynchronously will generate frequency spectrum leakage and fence effect. Meanwhile, in the case of the existence of interharmonics that are close to harmonics as well as other interharmonics, the actual frequency components cannot be accurately identified and measured on account of the limited frequency resolution. In order to solve the immeasurability of multiple adjacent interharmonics under asynchronous sampling condition due to spectrum interference, a multiple interharmonics spectrum separation and parameter measurement method is proposed. First, an interharmonic simplification model is established, and then, each main frequency component can be separated with the known spectral information using the spectrum separation algorithm. The performance of the proposed method is validated on the synthetic signal. The simulation results show that the proposed method can not only accurately identify the frequency components, but also obtain the parameters with high precision.

show abstract

Section: Noise Analysismentioning

confidence: 99%

“…Hence, in order to verify the adaptability of the proposed method in a noisy environment, the Gaussian white noise (GWN) is added to the signal expressed in (25). The noise level is indicated by the signal-to-noise ratio (SNR).…”

Section: Noise Analysismentioning

confidence: 99%

Multi-Interharmonic Spectrum Separation and Measurement Under Asynchronous Sampling Condition

Sun

Zang

et al. 2016

IEEE Trans. Instrum. Meas.

View full text Add to dashboard Cite

show abstract

“…An iterative methods based on second-order Taylor's series expansion have been proposed in [22,23]. The main purpose of these methods was estimating fundamental current phasors in the presence of decaying DC offset and also in the presence of harmonic oscillations.…”

Section: Introductionmentioning

confidence: 99%

An analytical approach for removal of decaying DC component considering frequency deviation

Tajdinian

Jahromi

Mohseni

et al. 2016

Electric Power Systems Research

View full text Add to dashboard Cite

“…However, the algorithm introduces extensive errors in the estimation of fundamental phasors with DC offset. To dampen the DC and sub-synchronous frequency components in the signal, dynamic phasor estimator algorithms were developed [12]. Though the technique showed enhanced performance compared to the traditional DFT, inherent errors exist in the phasor estimation by DFT based methods.…”

mentioning

confidence: 99%

A Fast and Scalable Protection Scheme for Distribution Networks With Distributed Generation

Kumar

Srinivasan

Reindl³

2016

IEEE Trans. Power Delivery

View full text Add to dashboard Cite

Abstract-The increasing penetration of distributed generators (DGs) in modern day power grids result in varying fault current levels and network scenarios which may affect the conventional over-current protection relays. This necessitates a protection scheme with efficient fault signal estimations and smart decision making capabilities in case of unexpected events. In this paper, a novel, fast and adaptive relay mechanism has been proposed for complete protection of radial distribution systems with DG penetration. A Fast Recursive Discrete Fourier Transform (FRDFT) algorithm is used here for efficient fundamental tracking of varying power system signals. The numerical relay design using FRDFT algorithm is embedded with Fuzzy Logic Decision Making (FLDM) module for obtaining optimal protection settings in case of changing system conditions. The proposed adaptive scheme is tested on a standard IEEE 34-bus distribution system equipped with DGs by simulating various case studies. Simulation results verify that the adaptive relay is able to capture the changing system scenarios and select the protection settings accordingly.Index Terms-Adaptive relay mechanism, distributed generators, fault signal estimation, fuzzy logic decision making, optimal protection settings, over-current protection relays.

show abstract

Dynamic Phasor and Frequency Estimators Considering Decaying DC Components

Cited by 46 publications

References 18 publications

Multi-Interharmonic Spectrum Separation and Measurement Under Asynchronous Sampling Condition

Multi-Interharmonic Spectrum Separation and Measurement Under Asynchronous Sampling Condition

An analytical approach for removal of decaying DC component considering frequency deviation

A Fast and Scalable Protection Scheme for Distribution Networks With Distributed Generation

Contact Info

Product

Resources

About