Parameter Identification of Unsymmetrical Transmission Lines Using Fault Records Obtained From Protective Relays

Schulze, Roberto; Schegner, Peter; Živanović, Rastko

doi:10.1109/tpwrd.2010.2102370

Cited by 47 publications

(56 citation statements)

References 5 publications

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“…O primeiroé desenvolvido no domínio do tempo por meio de registros oscilográficos de corrente e tensão nos dois terminais da linha. Por exemplo, alguns métodos fazem uso dos registros de faltas coletados por reles digitais nos terminais (Schulze et al, 2011), (Costa and Kurokawa, 2015). O segundo métodoé baseado em medições fasoriais nos terminais da linha no domínio da frequência, convencionalmente esses registros de corrente e tensão são coletados por meio de Phasor Measurements Units -PMUs (Li et al, 2017), (Janeček et al, 2011).…”

Section: Introductionunclassified

Estimação dos Parâmetros de Linhas de Transmissão por meio de Medições Fasoriais e Método dos Mínimos Quadrados

Albuquerque

Costa

Liboni

et al. 2020

Anais Do Congresso Brasileiro De Automática 2020

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Esta pesquisa propõe um método de estimação dos parâmetros elétricos de linhas de transmissão aéreas. O procedimento é desenvolvido a partir de simulações de medições fasoriais a partir de PMUs nos dois terminais da linha, bem como eventuais ruídos durante a aquisição dos sinais e registro dos dados. O método de estimação é baseado no método dos mínimos quadrados e mostra-se preciso na determinação dos parâmetros elétricos de linhas curtas e médias.

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Section: Introductionunclassified

Estimação dos Parâmetros de Linhas de Transmissão por meio de Medições Fasoriais e Método dos Mínimos Quadrados

Albuquerque

Costa

Liboni

et al. 2020

Anais Do Congresso Brasileiro De Automática 2020

View full text Add to dashboard Cite

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Section: Introductionmentioning

confidence: 99%

“…Studies on the parameter estimation in the time domain have been reported in some papers in the literature [4]- [6]. In [4], a Prony-method based approach to identify parameters of unsymmetrical transmission lines by analyzing fault records is proposed. Ren et al [5] present a Kalman filter-based approach for tracking untransposed overhead transmission line parameters and states estimation simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Mutually Coupled Transmission Line Parameter Estimation and Voltage Profile Calculation Using One Terminal Data Sampling and Virtual Black-Box

2019

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In this paper, an accurate parameter identification algorithm is proposed for transient voltage profile calculation of the unknown transmission lines. This method is based on the virtual black-box method and uses single-ended data sampling, where the input data include voltage and current samples obtained by measuring at one end of the line in transient mode. A mathematical formulation is proposed to separate the sampled data and form a virtual black-box system with virtual inputs and outputs. The virtual black-box is designed, such that the system coefficients relating the virtual outputs and inputs are the known functions of transmission line parameters in the real world. The coefficient values are then calculated by employing the recursive least squares estimation method, which minimizes the sum of squared errors of observations. Using this method, transmission line parameters and transient voltage profile are calculated from only one terminal data with no need of measuring devices, data synchronization, and communication devices at both sides. The efficiency of the proposed method is tested and proved through the EMTP simulations. INDEX TERMS One terminal sampling, power system transients, recursive estimation, time domain analysis, transmission lines.

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“…This will greatly increase the cost of hardware. In addition, if a microcomputerbased protection device is used for fault recording, the massive waveform data will also affect the communication upload time [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

A new method of power system fault recording based on compressed sensing

Jiang

Zhang

2017

IEEJ Transactions Elec Engng

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Wavelet transform is usually used to deal with the numerous data in fault recording of power systems, but it still needs to sample the signal with a high frequency first and then compress the data obtained. In order to solve the problem, this paper proposes a new fault recording method based on compressed sensing theory. The method can break the limit of Nyquist sampling theorem and acquire the fault signal with a much lower sampling frequency. It presents the theoretical framework of compressed sensing, analyzes the characteristics of the faulty waveform, and proposes a new sparsity adaptive and compressive sampling matching pursuit algorithm to reconstruct the fault signal. Finally, simulation results in MATLAB show that the proposed method performs well at different compression ratios in terms of the norm mean-square error, signal-to-noise ratio, and waveform similarity.

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Parameter Identification of Unsymmetrical Transmission Lines Using Fault Records Obtained From Protective Relays

Cited by 47 publications

References 5 publications

Estimação dos Parâmetros de Linhas de Transmissão por meio de Medições Fasoriais e Método dos Mínimos Quadrados

Estimação dos Parâmetros de Linhas de Transmissão por meio de Medições Fasoriais e Método dos Mínimos Quadrados

Mutually Coupled Transmission Line Parameter Estimation and Voltage Profile Calculation Using One Terminal Data Sampling and Virtual Black-Box

A new method of power system fault recording based on compressed sensing

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